1 //===-- LLParser.cpp - Parser Class ---------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the parser class for .ll files.
12 //===----------------------------------------------------------------------===//
15 #include "llvm/AutoUpgrade.h"
16 #include "llvm/CallingConv.h"
17 #include "llvm/Constants.h"
18 #include "llvm/DerivedTypes.h"
19 #include "llvm/InlineAsm.h"
20 #include "llvm/Instructions.h"
21 #include "llvm/Module.h"
22 #include "llvm/Operator.h"
23 #include "llvm/ValueSymbolTable.h"
24 #include "llvm/ADT/SmallPtrSet.h"
25 #include "llvm/ADT/StringExtras.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/Support/raw_ostream.h"
30 /// Run: module ::= toplevelentity*
31 bool LLParser::Run() {
35 return ParseTopLevelEntities() ||
36 ValidateEndOfModule();
39 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
41 bool LLParser::ValidateEndOfModule() {
42 // Handle any instruction metadata forward references.
43 if (!ForwardRefInstMetadata.empty()) {
44 for (DenseMap<Instruction*, std::vector<MDRef> >::iterator
45 I = ForwardRefInstMetadata.begin(), E = ForwardRefInstMetadata.end();
47 Instruction *Inst = I->first;
48 const std::vector<MDRef> &MDList = I->second;
50 for (unsigned i = 0, e = MDList.size(); i != e; ++i) {
51 unsigned SlotNo = MDList[i].MDSlot;
53 if (SlotNo >= NumberedMetadata.size() || NumberedMetadata[SlotNo] == 0)
54 return Error(MDList[i].Loc, "use of undefined metadata '!" +
55 utostr(SlotNo) + "'");
56 Inst->setMetadata(MDList[i].MDKind, NumberedMetadata[SlotNo]);
59 ForwardRefInstMetadata.clear();
63 // Update auto-upgraded malloc calls to "malloc".
64 // FIXME: Remove in LLVM 3.0.
66 MallocF->setName("malloc");
67 // If setName() does not set the name to "malloc", then there is already a
68 // declaration of "malloc". In that case, iterate over all calls to MallocF
69 // and get them to call the declared "malloc" instead.
70 if (MallocF->getName() != "malloc") {
71 Constant *RealMallocF = M->getFunction("malloc");
72 if (RealMallocF->getType() != MallocF->getType())
73 RealMallocF = ConstantExpr::getBitCast(RealMallocF, MallocF->getType());
74 MallocF->replaceAllUsesWith(RealMallocF);
75 MallocF->eraseFromParent();
81 // If there are entries in ForwardRefBlockAddresses at this point, they are
82 // references after the function was defined. Resolve those now.
83 while (!ForwardRefBlockAddresses.empty()) {
84 // Okay, we are referencing an already-parsed function, resolve them now.
86 const ValID &Fn = ForwardRefBlockAddresses.begin()->first;
87 if (Fn.Kind == ValID::t_GlobalName)
88 TheFn = M->getFunction(Fn.StrVal);
89 else if (Fn.UIntVal < NumberedVals.size())
90 TheFn = dyn_cast<Function>(NumberedVals[Fn.UIntVal]);
93 return Error(Fn.Loc, "unknown function referenced by blockaddress");
95 // Resolve all these references.
96 if (ResolveForwardRefBlockAddresses(TheFn,
97 ForwardRefBlockAddresses.begin()->second,
101 ForwardRefBlockAddresses.erase(ForwardRefBlockAddresses.begin());
105 if (!ForwardRefTypes.empty())
106 return Error(ForwardRefTypes.begin()->second.second,
107 "use of undefined type named '" +
108 ForwardRefTypes.begin()->first + "'");
109 if (!ForwardRefTypeIDs.empty())
110 return Error(ForwardRefTypeIDs.begin()->second.second,
111 "use of undefined type '%" +
112 utostr(ForwardRefTypeIDs.begin()->first) + "'");
114 if (!ForwardRefVals.empty())
115 return Error(ForwardRefVals.begin()->second.second,
116 "use of undefined value '@" + ForwardRefVals.begin()->first +
119 if (!ForwardRefValIDs.empty())
120 return Error(ForwardRefValIDs.begin()->second.second,
121 "use of undefined value '@" +
122 utostr(ForwardRefValIDs.begin()->first) + "'");
124 if (!ForwardRefMDNodes.empty())
125 return Error(ForwardRefMDNodes.begin()->second.second,
126 "use of undefined metadata '!" +
127 utostr(ForwardRefMDNodes.begin()->first) + "'");
130 // Look for intrinsic functions and CallInst that need to be upgraded
131 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
132 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
134 // Check debug info intrinsics.
135 CheckDebugInfoIntrinsics(M);
139 bool LLParser::ResolveForwardRefBlockAddresses(Function *TheFn,
140 std::vector<std::pair<ValID, GlobalValue*> > &Refs,
141 PerFunctionState *PFS) {
142 // Loop over all the references, resolving them.
143 for (unsigned i = 0, e = Refs.size(); i != e; ++i) {
146 if (Refs[i].first.Kind == ValID::t_LocalName)
147 Res = PFS->GetBB(Refs[i].first.StrVal, Refs[i].first.Loc);
149 Res = PFS->GetBB(Refs[i].first.UIntVal, Refs[i].first.Loc);
150 } else if (Refs[i].first.Kind == ValID::t_LocalID) {
151 return Error(Refs[i].first.Loc,
152 "cannot take address of numeric label after the function is defined");
154 Res = dyn_cast_or_null<BasicBlock>(
155 TheFn->getValueSymbolTable().lookup(Refs[i].first.StrVal));
159 return Error(Refs[i].first.Loc,
160 "referenced value is not a basic block");
162 // Get the BlockAddress for this and update references to use it.
163 BlockAddress *BA = BlockAddress::get(TheFn, Res);
164 Refs[i].second->replaceAllUsesWith(BA);
165 Refs[i].second->eraseFromParent();
171 //===----------------------------------------------------------------------===//
172 // Top-Level Entities
173 //===----------------------------------------------------------------------===//
175 bool LLParser::ParseTopLevelEntities() {
177 switch (Lex.getKind()) {
178 default: return TokError("expected top-level entity");
179 case lltok::Eof: return false;
180 //case lltok::kw_define:
181 case lltok::kw_declare: if (ParseDeclare()) return true; break;
182 case lltok::kw_define: if (ParseDefine()) return true; break;
183 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
184 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
185 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
186 case lltok::kw_type: if (ParseUnnamedType()) return true; break;
187 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
188 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
189 case lltok::LocalVar: if (ParseNamedType()) return true; break;
190 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
191 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
192 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
193 case lltok::MetadataVar: if (ParseNamedMetadata()) return true; break;
195 // The Global variable production with no name can have many different
196 // optional leading prefixes, the production is:
197 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
198 // OptionalAddrSpace ('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 utostr(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 '%" +
447 utostr(VarID) + "'");
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->getNameStr() == Name && "Should not be a name conflict!");
685 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
686 /// OptionalAddrSpace GlobalType Type Const
687 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
688 /// OptionalAddrSpace 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;
699 PATypeHolder Ty(Type::getVoidTy(Context));
700 if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
701 ParseOptionalAddrSpace(AddrSpace) ||
702 ParseGlobalType(IsConstant) ||
703 ParseType(Ty, TyLoc))
706 // If the linkage is specified and is external, then no initializer is
709 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
710 Linkage != GlobalValue::ExternalWeakLinkage &&
711 Linkage != GlobalValue::ExternalLinkage)) {
712 if (ParseGlobalValue(Ty, Init))
716 if (Ty->isFunctionTy() || Ty->isLabelTy())
717 return Error(TyLoc, "invalid type for global variable");
719 GlobalVariable *GV = 0;
721 // See if the global was forward referenced, if so, use the global.
723 if (GlobalValue *GVal = M->getNamedValue(Name)) {
724 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
725 return Error(NameLoc, "redefinition of global '@" + Name + "'");
726 GV = cast<GlobalVariable>(GVal);
729 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
730 I = ForwardRefValIDs.find(NumberedVals.size());
731 if (I != ForwardRefValIDs.end()) {
732 GV = cast<GlobalVariable>(I->second.first);
733 ForwardRefValIDs.erase(I);
738 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
739 Name, 0, false, AddrSpace);
741 if (GV->getType()->getElementType() != Ty)
743 "forward reference and definition of global have different types");
745 // Move the forward-reference to the correct spot in the module.
746 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
750 NumberedVals.push_back(GV);
752 // Set the parsed properties on the global.
754 GV->setInitializer(Init);
755 GV->setConstant(IsConstant);
756 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
757 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
758 GV->setThreadLocal(ThreadLocal);
760 // Parse attributes on the global.
761 while (Lex.getKind() == lltok::comma) {
764 if (Lex.getKind() == lltok::kw_section) {
766 GV->setSection(Lex.getStrVal());
767 if (ParseToken(lltok::StringConstant, "expected global section string"))
769 } else if (Lex.getKind() == lltok::kw_align) {
771 if (ParseOptionalAlignment(Alignment)) return true;
772 GV->setAlignment(Alignment);
774 TokError("unknown global variable property!");
782 //===----------------------------------------------------------------------===//
783 // GlobalValue Reference/Resolution Routines.
784 //===----------------------------------------------------------------------===//
786 /// GetGlobalVal - Get a value with the specified name or ID, creating a
787 /// forward reference record if needed. This can return null if the value
788 /// exists but does not have the right type.
789 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, const Type *Ty,
791 const PointerType *PTy = dyn_cast<PointerType>(Ty);
793 Error(Loc, "global variable reference must have pointer type");
797 // Look this name up in the normal function symbol table.
799 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
801 // If this is a forward reference for the value, see if we already created a
802 // forward ref record.
804 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
805 I = ForwardRefVals.find(Name);
806 if (I != ForwardRefVals.end())
807 Val = I->second.first;
810 // If we have the value in the symbol table or fwd-ref table, return it.
812 if (Val->getType() == Ty) return Val;
813 Error(Loc, "'@" + Name + "' defined with type '" +
814 Val->getType()->getDescription() + "'");
818 // Otherwise, create a new forward reference for this value and remember it.
820 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
821 // Function types can return opaque but functions can't.
822 if (FT->getReturnType()->isOpaqueTy()) {
823 Error(Loc, "function may not return opaque type");
827 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
829 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
830 GlobalValue::ExternalWeakLinkage, 0, Name);
833 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
837 GlobalValue *LLParser::GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc) {
838 const PointerType *PTy = dyn_cast<PointerType>(Ty);
840 Error(Loc, "global variable reference must have pointer type");
844 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
846 // If this is a forward reference for the value, see if we already created a
847 // forward ref record.
849 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
850 I = ForwardRefValIDs.find(ID);
851 if (I != ForwardRefValIDs.end())
852 Val = I->second.first;
855 // If we have the value in the symbol table or fwd-ref table, return it.
857 if (Val->getType() == Ty) return Val;
858 Error(Loc, "'@" + utostr(ID) + "' defined with type '" +
859 Val->getType()->getDescription() + "'");
863 // Otherwise, create a new forward reference for this value and remember it.
865 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
866 // Function types can return opaque but functions can't.
867 if (FT->getReturnType()->isOpaqueTy()) {
868 Error(Loc, "function may not return opaque type");
871 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
873 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
874 GlobalValue::ExternalWeakLinkage, 0, "");
877 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
882 //===----------------------------------------------------------------------===//
884 //===----------------------------------------------------------------------===//
886 /// ParseToken - If the current token has the specified kind, eat it and return
887 /// success. Otherwise, emit the specified error and return failure.
888 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
889 if (Lex.getKind() != T)
890 return TokError(ErrMsg);
895 /// ParseStringConstant
896 /// ::= StringConstant
897 bool LLParser::ParseStringConstant(std::string &Result) {
898 if (Lex.getKind() != lltok::StringConstant)
899 return TokError("expected string constant");
900 Result = Lex.getStrVal();
907 bool LLParser::ParseUInt32(unsigned &Val) {
908 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
909 return TokError("expected integer");
910 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
911 if (Val64 != unsigned(Val64))
912 return TokError("expected 32-bit integer (too large)");
919 /// ParseOptionalAddrSpace
921 /// := 'addrspace' '(' uint32 ')'
922 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
924 if (!EatIfPresent(lltok::kw_addrspace))
926 return ParseToken(lltok::lparen, "expected '(' in address space") ||
927 ParseUInt32(AddrSpace) ||
928 ParseToken(lltok::rparen, "expected ')' in address space");
931 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
932 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
933 /// 2: function attr.
934 /// 3: function arg after value: FIXME: REMOVE IN LLVM 3.0
935 bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
936 Attrs = Attribute::None;
937 LocTy AttrLoc = Lex.getLoc();
940 switch (Lex.getKind()) {
943 // Treat these as signext/zeroext if they occur in the argument list after
944 // the value, as in "call i8 @foo(i8 10 sext)". If they occur before the
945 // value, as in "call i8 @foo(i8 sext (" then it is part of a constant
947 // FIXME: REMOVE THIS IN LLVM 3.0
949 if (Lex.getKind() == lltok::kw_sext)
950 Attrs |= Attribute::SExt;
952 Attrs |= Attribute::ZExt;
956 default: // End of attributes.
957 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
958 return Error(AttrLoc, "invalid use of function-only attribute");
960 if (AttrKind != 0 && AttrKind != 3 && (Attrs & Attribute::ParameterOnly))
961 return Error(AttrLoc, "invalid use of parameter-only attribute");
964 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
965 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
966 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
967 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
968 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
969 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
970 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
971 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
973 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
974 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
975 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
976 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
977 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
978 case lltok::kw_inlinehint: Attrs |= Attribute::InlineHint; break;
979 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
980 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
981 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
982 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
983 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
984 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
985 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
987 case lltok::kw_alignstack: {
989 if (ParseOptionalStackAlignment(Alignment))
991 Attrs |= Attribute::constructStackAlignmentFromInt(Alignment);
995 case lltok::kw_align: {
997 if (ParseOptionalAlignment(Alignment))
999 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
1008 /// ParseOptionalLinkage
1011 /// ::= 'linker_private'
1012 /// ::= 'linker_private_weak'
1013 /// ::= 'linker_private_weak_def_auto'
1018 /// ::= 'linkonce_odr'
1019 /// ::= 'available_externally'
1024 /// ::= 'extern_weak'
1026 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1028 switch (Lex.getKind()) {
1029 default: Res=GlobalValue::ExternalLinkage; return false;
1030 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1031 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1032 case lltok::kw_linker_private_weak:
1033 Res = GlobalValue::LinkerPrivateWeakLinkage;
1035 case lltok::kw_linker_private_weak_def_auto:
1036 Res = GlobalValue::LinkerPrivateWeakDefAutoLinkage;
1038 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1039 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1040 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1041 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1042 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1043 case lltok::kw_available_externally:
1044 Res = GlobalValue::AvailableExternallyLinkage;
1046 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1047 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1048 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1049 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1050 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1051 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1058 /// ParseOptionalVisibility
1064 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1065 switch (Lex.getKind()) {
1066 default: Res = GlobalValue::DefaultVisibility; return false;
1067 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1068 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1069 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1075 /// ParseOptionalCallingConv
1080 /// ::= 'x86_stdcallcc'
1081 /// ::= 'x86_fastcallcc'
1082 /// ::= 'x86_thiscallcc'
1083 /// ::= 'arm_apcscc'
1084 /// ::= 'arm_aapcscc'
1085 /// ::= 'arm_aapcs_vfpcc'
1086 /// ::= 'msp430_intrcc'
1089 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1090 switch (Lex.getKind()) {
1091 default: CC = CallingConv::C; return false;
1092 case lltok::kw_ccc: CC = CallingConv::C; break;
1093 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1094 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1095 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1096 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1097 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1098 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1099 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1100 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1101 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1102 case lltok::kw_cc: {
1103 unsigned ArbitraryCC;
1105 if (ParseUInt32(ArbitraryCC)) {
1108 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1118 /// ParseInstructionMetadata
1119 /// ::= !dbg !42 (',' !dbg !57)*
1120 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1121 PerFunctionState *PFS) {
1123 if (Lex.getKind() != lltok::MetadataVar)
1124 return TokError("expected metadata after comma");
1126 std::string Name = Lex.getStrVal();
1127 unsigned MDK = M->getMDKindID(Name.c_str());
1132 SMLoc Loc = Lex.getLoc();
1134 if (ParseToken(lltok::exclaim, "expected '!' here"))
1137 // This code is similar to that of ParseMetadataValue, however it needs to
1138 // have special-case code for a forward reference; see the comments on
1139 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1140 // at the top level here.
1141 if (Lex.getKind() == lltok::lbrace) {
1143 if (ParseMetadataListValue(ID, PFS))
1145 assert(ID.Kind == ValID::t_MDNode);
1146 Inst->setMetadata(MDK, ID.MDNodeVal);
1148 if (ParseMDNodeID(Node, NodeID))
1151 // If we got the node, add it to the instruction.
1152 Inst->setMetadata(MDK, Node);
1154 MDRef R = { Loc, MDK, NodeID };
1155 // Otherwise, remember that this should be resolved later.
1156 ForwardRefInstMetadata[Inst].push_back(R);
1160 // If this is the end of the list, we're done.
1161 } while (EatIfPresent(lltok::comma));
1165 /// ParseOptionalAlignment
1168 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1170 if (!EatIfPresent(lltok::kw_align))
1172 LocTy AlignLoc = Lex.getLoc();
1173 if (ParseUInt32(Alignment)) return true;
1174 if (!isPowerOf2_32(Alignment))
1175 return Error(AlignLoc, "alignment is not a power of two");
1176 if (Alignment > Value::MaximumAlignment)
1177 return Error(AlignLoc, "huge alignments are not supported yet");
1181 /// ParseOptionalCommaAlign
1185 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1187 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1188 bool &AteExtraComma) {
1189 AteExtraComma = false;
1190 while (EatIfPresent(lltok::comma)) {
1191 // Metadata at the end is an early exit.
1192 if (Lex.getKind() == lltok::MetadataVar) {
1193 AteExtraComma = true;
1197 if (Lex.getKind() != lltok::kw_align)
1198 return Error(Lex.getLoc(), "expected metadata or 'align'");
1200 LocTy AlignLoc = Lex.getLoc();
1201 if (ParseOptionalAlignment(Alignment)) return true;
1207 /// ParseOptionalStackAlignment
1209 /// ::= 'alignstack' '(' 4 ')'
1210 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1212 if (!EatIfPresent(lltok::kw_alignstack))
1214 LocTy ParenLoc = Lex.getLoc();
1215 if (!EatIfPresent(lltok::lparen))
1216 return Error(ParenLoc, "expected '('");
1217 LocTy AlignLoc = Lex.getLoc();
1218 if (ParseUInt32(Alignment)) return true;
1219 ParenLoc = Lex.getLoc();
1220 if (!EatIfPresent(lltok::rparen))
1221 return Error(ParenLoc, "expected ')'");
1222 if (!isPowerOf2_32(Alignment))
1223 return Error(AlignLoc, "stack alignment is not a power of two");
1227 /// ParseIndexList - This parses the index list for an insert/extractvalue
1228 /// instruction. This sets AteExtraComma in the case where we eat an extra
1229 /// comma at the end of the line and find that it is followed by metadata.
1230 /// Clients that don't allow metadata can call the version of this function that
1231 /// only takes one argument.
1234 /// ::= (',' uint32)+
1236 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1237 bool &AteExtraComma) {
1238 AteExtraComma = false;
1240 if (Lex.getKind() != lltok::comma)
1241 return TokError("expected ',' as start of index list");
1243 while (EatIfPresent(lltok::comma)) {
1244 if (Lex.getKind() == lltok::MetadataVar) {
1245 AteExtraComma = true;
1249 if (ParseUInt32(Idx)) return true;
1250 Indices.push_back(Idx);
1256 //===----------------------------------------------------------------------===//
1258 //===----------------------------------------------------------------------===//
1260 /// ParseType - Parse and resolve a full type.
1261 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1262 LocTy TypeLoc = Lex.getLoc();
1263 if (ParseTypeRec(Result)) return true;
1265 // Verify no unresolved uprefs.
1266 if (!UpRefs.empty())
1267 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1269 if (!AllowVoid && Result.get()->isVoidTy())
1270 return Error(TypeLoc, "void type only allowed for function results");
1275 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1276 /// called. It loops through the UpRefs vector, which is a list of the
1277 /// currently active types. For each type, if the up-reference is contained in
1278 /// the newly completed type, we decrement the level count. When the level
1279 /// count reaches zero, the up-referenced type is the type that is passed in:
1280 /// thus we can complete the cycle.
1282 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1283 // If Ty isn't abstract, or if there are no up-references in it, then there is
1284 // nothing to resolve here.
1285 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1287 PATypeHolder Ty(ty);
1289 dbgs() << "Type '" << Ty->getDescription()
1290 << "' newly formed. Resolving upreferences.\n"
1291 << UpRefs.size() << " upreferences active!\n";
1294 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1295 // to zero), we resolve them all together before we resolve them to Ty. At
1296 // the end of the loop, if there is anything to resolve to Ty, it will be in
1298 OpaqueType *TypeToResolve = 0;
1300 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1301 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1303 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1304 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1307 dbgs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1308 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1309 << (ContainsType ? "true" : "false")
1310 << " level=" << UpRefs[i].NestingLevel << "\n";
1315 // Decrement level of upreference
1316 unsigned Level = --UpRefs[i].NestingLevel;
1317 UpRefs[i].LastContainedTy = Ty;
1319 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1324 dbgs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1327 TypeToResolve = UpRefs[i].UpRefTy;
1329 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1330 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1331 --i; // Do not skip the next element.
1335 TypeToResolve->refineAbstractTypeTo(Ty);
1341 /// ParseTypeRec - The recursive function used to process the internal
1342 /// implementation details of types.
1343 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1344 switch (Lex.getKind()) {
1346 return TokError("expected type");
1348 // TypeRec ::= 'float' | 'void' (etc)
1349 Result = Lex.getTyVal();
1352 case lltok::kw_opaque:
1353 // TypeRec ::= 'opaque'
1354 Result = OpaqueType::get(Context);
1358 // TypeRec ::= '{' ... '}'
1359 if (ParseStructType(Result, false))
1362 case lltok::kw_union:
1363 // TypeRec ::= 'union' '{' ... '}'
1364 if (ParseUnionType(Result))
1367 case lltok::lsquare:
1368 // TypeRec ::= '[' ... ']'
1369 Lex.Lex(); // eat the lsquare.
1370 if (ParseArrayVectorType(Result, false))
1373 case lltok::less: // Either vector or packed struct.
1374 // TypeRec ::= '<' ... '>'
1376 if (Lex.getKind() == lltok::lbrace) {
1377 if (ParseStructType(Result, true) ||
1378 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1380 } else if (ParseArrayVectorType(Result, true))
1383 case lltok::LocalVar:
1384 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1386 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1389 Result = OpaqueType::get(Context);
1390 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1391 std::make_pair(Result,
1393 M->addTypeName(Lex.getStrVal(), Result.get());
1398 case lltok::LocalVarID:
1400 if (Lex.getUIntVal() < NumberedTypes.size())
1401 Result = NumberedTypes[Lex.getUIntVal()];
1403 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1404 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1405 if (I != ForwardRefTypeIDs.end())
1406 Result = I->second.first;
1408 Result = OpaqueType::get(Context);
1409 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1410 std::make_pair(Result,
1416 case lltok::backslash: {
1417 // TypeRec ::= '\' 4
1420 if (ParseUInt32(Val)) return true;
1421 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1422 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1428 // Parse the type suffixes.
1430 switch (Lex.getKind()) {
1432 default: return false;
1434 // TypeRec ::= TypeRec '*'
1436 if (Result.get()->isLabelTy())
1437 return TokError("basic block pointers are invalid");
1438 if (Result.get()->isVoidTy())
1439 return TokError("pointers to void are invalid; use i8* instead");
1440 if (!PointerType::isValidElementType(Result.get()))
1441 return TokError("pointer to this type is invalid");
1442 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1446 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1447 case lltok::kw_addrspace: {
1448 if (Result.get()->isLabelTy())
1449 return TokError("basic block pointers are invalid");
1450 if (Result.get()->isVoidTy())
1451 return TokError("pointers to void are invalid; use i8* instead");
1452 if (!PointerType::isValidElementType(Result.get()))
1453 return TokError("pointer to this type is invalid");
1455 if (ParseOptionalAddrSpace(AddrSpace) ||
1456 ParseToken(lltok::star, "expected '*' in address space"))
1459 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1463 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1465 if (ParseFunctionType(Result))
1472 /// ParseParameterList
1474 /// ::= '(' Arg (',' Arg)* ')'
1476 /// ::= Type OptionalAttributes Value OptionalAttributes
1477 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1478 PerFunctionState &PFS) {
1479 if (ParseToken(lltok::lparen, "expected '(' in call"))
1482 while (Lex.getKind() != lltok::rparen) {
1483 // If this isn't the first argument, we need a comma.
1484 if (!ArgList.empty() &&
1485 ParseToken(lltok::comma, "expected ',' in argument list"))
1488 // Parse the argument.
1490 PATypeHolder ArgTy(Type::getVoidTy(Context));
1491 unsigned ArgAttrs1 = Attribute::None;
1492 unsigned ArgAttrs2 = Attribute::None;
1494 if (ParseType(ArgTy, ArgLoc))
1497 // Otherwise, handle normal operands.
1498 if (ParseOptionalAttrs(ArgAttrs1, 0) ||
1499 ParseValue(ArgTy, V, PFS) ||
1500 // FIXME: Should not allow attributes after the argument, remove this
1502 ParseOptionalAttrs(ArgAttrs2, 3))
1504 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1507 Lex.Lex(); // Lex the ')'.
1513 /// ParseArgumentList - Parse the argument list for a function type or function
1514 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1515 /// ::= '(' ArgTypeListI ')'
1519 /// ::= ArgTypeList ',' '...'
1520 /// ::= ArgType (',' ArgType)*
1522 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1523 bool &isVarArg, bool inType) {
1525 assert(Lex.getKind() == lltok::lparen);
1526 Lex.Lex(); // eat the (.
1528 if (Lex.getKind() == lltok::rparen) {
1530 } else if (Lex.getKind() == lltok::dotdotdot) {
1534 LocTy TypeLoc = Lex.getLoc();
1535 PATypeHolder ArgTy(Type::getVoidTy(Context));
1539 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1540 // types (such as a function returning a pointer to itself). If parsing a
1541 // function prototype, we require fully resolved types.
1542 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1543 ParseOptionalAttrs(Attrs, 0)) return true;
1545 if (ArgTy->isVoidTy())
1546 return Error(TypeLoc, "argument can not have void type");
1548 if (Lex.getKind() == lltok::LocalVar ||
1549 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1550 Name = Lex.getStrVal();
1554 if (!FunctionType::isValidArgumentType(ArgTy))
1555 return Error(TypeLoc, "invalid type for function argument");
1557 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1559 while (EatIfPresent(lltok::comma)) {
1560 // Handle ... at end of arg list.
1561 if (EatIfPresent(lltok::dotdotdot)) {
1566 // Otherwise must be an argument type.
1567 TypeLoc = Lex.getLoc();
1568 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1569 ParseOptionalAttrs(Attrs, 0)) return true;
1571 if (ArgTy->isVoidTy())
1572 return Error(TypeLoc, "argument can not have void type");
1574 if (Lex.getKind() == lltok::LocalVar ||
1575 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1576 Name = Lex.getStrVal();
1582 if (!ArgTy->isFirstClassType() && !ArgTy->isOpaqueTy())
1583 return Error(TypeLoc, "invalid type for function argument");
1585 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1589 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1592 /// ParseFunctionType
1593 /// ::= Type ArgumentList OptionalAttrs
1594 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1595 assert(Lex.getKind() == lltok::lparen);
1597 if (!FunctionType::isValidReturnType(Result))
1598 return TokError("invalid function return type");
1600 std::vector<ArgInfo> ArgList;
1603 if (ParseArgumentList(ArgList, isVarArg, true) ||
1604 // FIXME: Allow, but ignore attributes on function types!
1605 // FIXME: Remove in LLVM 3.0
1606 ParseOptionalAttrs(Attrs, 2))
1609 // Reject names on the arguments lists.
1610 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1611 if (!ArgList[i].Name.empty())
1612 return Error(ArgList[i].Loc, "argument name invalid in function type");
1613 if (!ArgList[i].Attrs != 0) {
1614 // Allow but ignore attributes on function types; this permits
1616 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1620 std::vector<const Type*> ArgListTy;
1621 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1622 ArgListTy.push_back(ArgList[i].Type);
1624 Result = HandleUpRefs(FunctionType::get(Result.get(),
1625 ArgListTy, isVarArg));
1629 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1632 /// ::= '{' TypeRec (',' TypeRec)* '}'
1633 /// ::= '<' '{' '}' '>'
1634 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1635 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1636 assert(Lex.getKind() == lltok::lbrace);
1637 Lex.Lex(); // Consume the '{'
1639 if (EatIfPresent(lltok::rbrace)) {
1640 Result = StructType::get(Context, Packed);
1644 std::vector<PATypeHolder> ParamsList;
1645 LocTy EltTyLoc = Lex.getLoc();
1646 if (ParseTypeRec(Result)) return true;
1647 ParamsList.push_back(Result);
1649 if (Result->isVoidTy())
1650 return Error(EltTyLoc, "struct element can not have void type");
1651 if (!StructType::isValidElementType(Result))
1652 return Error(EltTyLoc, "invalid element type for struct");
1654 while (EatIfPresent(lltok::comma)) {
1655 EltTyLoc = Lex.getLoc();
1656 if (ParseTypeRec(Result)) return true;
1658 if (Result->isVoidTy())
1659 return Error(EltTyLoc, "struct element can not have void type");
1660 if (!StructType::isValidElementType(Result))
1661 return Error(EltTyLoc, "invalid element type for struct");
1663 ParamsList.push_back(Result);
1666 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1669 std::vector<const Type*> ParamsListTy;
1670 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1671 ParamsListTy.push_back(ParamsList[i].get());
1672 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1678 /// ::= 'union' '{' TypeRec (',' TypeRec)* '}'
1679 bool LLParser::ParseUnionType(PATypeHolder &Result) {
1680 assert(Lex.getKind() == lltok::kw_union);
1681 Lex.Lex(); // Consume the 'union'
1683 if (ParseToken(lltok::lbrace, "'{' expected after 'union'")) return true;
1685 SmallVector<PATypeHolder, 8> ParamsList;
1687 LocTy EltTyLoc = Lex.getLoc();
1688 if (ParseTypeRec(Result)) return true;
1689 ParamsList.push_back(Result);
1691 if (Result->isVoidTy())
1692 return Error(EltTyLoc, "union element can not have void type");
1693 if (!UnionType::isValidElementType(Result))
1694 return Error(EltTyLoc, "invalid element type for union");
1696 } while (EatIfPresent(lltok::comma)) ;
1698 if (ParseToken(lltok::rbrace, "expected '}' at end of union"))
1701 SmallVector<const Type*, 8> ParamsListTy;
1702 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1703 ParamsListTy.push_back(ParamsList[i].get());
1704 Result = HandleUpRefs(UnionType::get(&ParamsListTy[0], ParamsListTy.size()));
1708 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1709 /// token has already been consumed.
1711 /// ::= '[' APSINTVAL 'x' Types ']'
1712 /// ::= '<' APSINTVAL 'x' Types '>'
1713 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1714 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1715 Lex.getAPSIntVal().getBitWidth() > 64)
1716 return TokError("expected number in address space");
1718 LocTy SizeLoc = Lex.getLoc();
1719 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1722 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1725 LocTy TypeLoc = Lex.getLoc();
1726 PATypeHolder EltTy(Type::getVoidTy(Context));
1727 if (ParseTypeRec(EltTy)) return true;
1729 if (EltTy->isVoidTy())
1730 return Error(TypeLoc, "array and vector element type cannot be void");
1732 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1733 "expected end of sequential type"))
1738 return Error(SizeLoc, "zero element vector is illegal");
1739 if ((unsigned)Size != Size)
1740 return Error(SizeLoc, "size too large for vector");
1741 if (!VectorType::isValidElementType(EltTy))
1742 return Error(TypeLoc, "vector element type must be fp or integer");
1743 Result = VectorType::get(EltTy, unsigned(Size));
1745 if (!ArrayType::isValidElementType(EltTy))
1746 return Error(TypeLoc, "invalid array element type");
1747 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1752 //===----------------------------------------------------------------------===//
1753 // Function Semantic Analysis.
1754 //===----------------------------------------------------------------------===//
1756 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1758 : P(p), F(f), FunctionNumber(functionNumber) {
1760 // Insert unnamed arguments into the NumberedVals list.
1761 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1764 NumberedVals.push_back(AI);
1767 LLParser::PerFunctionState::~PerFunctionState() {
1768 // If there were any forward referenced non-basicblock values, delete them.
1769 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1770 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1771 if (!isa<BasicBlock>(I->second.first)) {
1772 I->second.first->replaceAllUsesWith(
1773 UndefValue::get(I->second.first->getType()));
1774 delete I->second.first;
1775 I->second.first = 0;
1778 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1779 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1780 if (!isa<BasicBlock>(I->second.first)) {
1781 I->second.first->replaceAllUsesWith(
1782 UndefValue::get(I->second.first->getType()));
1783 delete I->second.first;
1784 I->second.first = 0;
1788 bool LLParser::PerFunctionState::FinishFunction() {
1789 // Check to see if someone took the address of labels in this block.
1790 if (!P.ForwardRefBlockAddresses.empty()) {
1792 if (!F.getName().empty()) {
1793 FunctionID.Kind = ValID::t_GlobalName;
1794 FunctionID.StrVal = F.getName();
1796 FunctionID.Kind = ValID::t_GlobalID;
1797 FunctionID.UIntVal = FunctionNumber;
1800 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1801 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1802 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1803 // Resolve all these references.
1804 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1807 P.ForwardRefBlockAddresses.erase(FRBAI);
1811 if (!ForwardRefVals.empty())
1812 return P.Error(ForwardRefVals.begin()->second.second,
1813 "use of undefined value '%" + ForwardRefVals.begin()->first +
1815 if (!ForwardRefValIDs.empty())
1816 return P.Error(ForwardRefValIDs.begin()->second.second,
1817 "use of undefined value '%" +
1818 utostr(ForwardRefValIDs.begin()->first) + "'");
1823 /// GetVal - Get a value with the specified name or ID, creating a
1824 /// forward reference record if needed. This can return null if the value
1825 /// exists but does not have the right type.
1826 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1827 const Type *Ty, LocTy Loc) {
1828 // Look this name up in the normal function symbol table.
1829 Value *Val = F.getValueSymbolTable().lookup(Name);
1831 // If this is a forward reference for the value, see if we already created a
1832 // forward ref record.
1834 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1835 I = ForwardRefVals.find(Name);
1836 if (I != ForwardRefVals.end())
1837 Val = I->second.first;
1840 // If we have the value in the symbol table or fwd-ref table, return it.
1842 if (Val->getType() == Ty) return Val;
1843 if (Ty->isLabelTy())
1844 P.Error(Loc, "'%" + Name + "' is not a basic block");
1846 P.Error(Loc, "'%" + Name + "' defined with type '" +
1847 Val->getType()->getDescription() + "'");
1851 // Don't make placeholders with invalid type.
1852 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1853 P.Error(Loc, "invalid use of a non-first-class type");
1857 // Otherwise, create a new forward reference for this value and remember it.
1859 if (Ty->isLabelTy())
1860 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1862 FwdVal = new Argument(Ty, Name);
1864 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1868 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1870 // Look this name up in the normal function symbol table.
1871 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1873 // If this is a forward reference for the value, see if we already created a
1874 // forward ref record.
1876 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1877 I = ForwardRefValIDs.find(ID);
1878 if (I != ForwardRefValIDs.end())
1879 Val = I->second.first;
1882 // If we have the value in the symbol table or fwd-ref table, return it.
1884 if (Val->getType() == Ty) return Val;
1885 if (Ty->isLabelTy())
1886 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1888 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1889 Val->getType()->getDescription() + "'");
1893 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1894 P.Error(Loc, "invalid use of a non-first-class type");
1898 // Otherwise, create a new forward reference for this value and remember it.
1900 if (Ty->isLabelTy())
1901 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1903 FwdVal = new Argument(Ty);
1905 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1909 /// SetInstName - After an instruction is parsed and inserted into its
1910 /// basic block, this installs its name.
1911 bool LLParser::PerFunctionState::SetInstName(int NameID,
1912 const std::string &NameStr,
1913 LocTy NameLoc, Instruction *Inst) {
1914 // If this instruction has void type, it cannot have a name or ID specified.
1915 if (Inst->getType()->isVoidTy()) {
1916 if (NameID != -1 || !NameStr.empty())
1917 return P.Error(NameLoc, "instructions returning void cannot have a name");
1921 // If this was a numbered instruction, verify that the instruction is the
1922 // expected value and resolve any forward references.
1923 if (NameStr.empty()) {
1924 // If neither a name nor an ID was specified, just use the next ID.
1926 NameID = NumberedVals.size();
1928 if (unsigned(NameID) != NumberedVals.size())
1929 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1930 utostr(NumberedVals.size()) + "'");
1932 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1933 ForwardRefValIDs.find(NameID);
1934 if (FI != ForwardRefValIDs.end()) {
1935 if (FI->second.first->getType() != Inst->getType())
1936 return P.Error(NameLoc, "instruction forward referenced with type '" +
1937 FI->second.first->getType()->getDescription() + "'");
1938 FI->second.first->replaceAllUsesWith(Inst);
1939 delete FI->second.first;
1940 ForwardRefValIDs.erase(FI);
1943 NumberedVals.push_back(Inst);
1947 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1948 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1949 FI = ForwardRefVals.find(NameStr);
1950 if (FI != ForwardRefVals.end()) {
1951 if (FI->second.first->getType() != Inst->getType())
1952 return P.Error(NameLoc, "instruction forward referenced with type '" +
1953 FI->second.first->getType()->getDescription() + "'");
1954 FI->second.first->replaceAllUsesWith(Inst);
1955 delete FI->second.first;
1956 ForwardRefVals.erase(FI);
1959 // Set the name on the instruction.
1960 Inst->setName(NameStr);
1962 if (Inst->getNameStr() != NameStr)
1963 return P.Error(NameLoc, "multiple definition of local value named '" +
1968 /// GetBB - Get a basic block with the specified name or ID, creating a
1969 /// forward reference record if needed.
1970 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1972 return cast_or_null<BasicBlock>(GetVal(Name,
1973 Type::getLabelTy(F.getContext()), Loc));
1976 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1977 return cast_or_null<BasicBlock>(GetVal(ID,
1978 Type::getLabelTy(F.getContext()), Loc));
1981 /// DefineBB - Define the specified basic block, which is either named or
1982 /// unnamed. If there is an error, this returns null otherwise it returns
1983 /// the block being defined.
1984 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1988 BB = GetBB(NumberedVals.size(), Loc);
1990 BB = GetBB(Name, Loc);
1991 if (BB == 0) return 0; // Already diagnosed error.
1993 // Move the block to the end of the function. Forward ref'd blocks are
1994 // inserted wherever they happen to be referenced.
1995 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1997 // Remove the block from forward ref sets.
1999 ForwardRefValIDs.erase(NumberedVals.size());
2000 NumberedVals.push_back(BB);
2002 // BB forward references are already in the function symbol table.
2003 ForwardRefVals.erase(Name);
2009 //===----------------------------------------------------------------------===//
2011 //===----------------------------------------------------------------------===//
2013 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2014 /// type implied. For example, if we parse "4" we don't know what integer type
2015 /// it has. The value will later be combined with its type and checked for
2016 /// sanity. PFS is used to convert function-local operands of metadata (since
2017 /// metadata operands are not just parsed here but also converted to values).
2018 /// PFS can be null when we are not parsing metadata values inside a function.
2019 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2020 ID.Loc = Lex.getLoc();
2021 switch (Lex.getKind()) {
2022 default: return TokError("expected value token");
2023 case lltok::GlobalID: // @42
2024 ID.UIntVal = Lex.getUIntVal();
2025 ID.Kind = ValID::t_GlobalID;
2027 case lltok::GlobalVar: // @foo
2028 ID.StrVal = Lex.getStrVal();
2029 ID.Kind = ValID::t_GlobalName;
2031 case lltok::LocalVarID: // %42
2032 ID.UIntVal = Lex.getUIntVal();
2033 ID.Kind = ValID::t_LocalID;
2035 case lltok::LocalVar: // %foo
2036 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
2037 ID.StrVal = Lex.getStrVal();
2038 ID.Kind = ValID::t_LocalName;
2040 case lltok::exclaim: // !42, !{...}, or !"foo"
2041 return ParseMetadataValue(ID, PFS);
2043 ID.APSIntVal = Lex.getAPSIntVal();
2044 ID.Kind = ValID::t_APSInt;
2046 case lltok::APFloat:
2047 ID.APFloatVal = Lex.getAPFloatVal();
2048 ID.Kind = ValID::t_APFloat;
2050 case lltok::kw_true:
2051 ID.ConstantVal = ConstantInt::getTrue(Context);
2052 ID.Kind = ValID::t_Constant;
2054 case lltok::kw_false:
2055 ID.ConstantVal = ConstantInt::getFalse(Context);
2056 ID.Kind = ValID::t_Constant;
2058 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2059 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2060 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2062 case lltok::lbrace: {
2063 // ValID ::= '{' ConstVector '}'
2065 SmallVector<Constant*, 16> Elts;
2066 if (ParseGlobalValueVector(Elts) ||
2067 ParseToken(lltok::rbrace, "expected end of struct constant"))
2070 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
2071 Elts.size(), false);
2072 ID.Kind = ValID::t_Constant;
2076 // ValID ::= '<' ConstVector '>' --> Vector.
2077 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2079 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2081 SmallVector<Constant*, 16> Elts;
2082 LocTy FirstEltLoc = Lex.getLoc();
2083 if (ParseGlobalValueVector(Elts) ||
2085 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2086 ParseToken(lltok::greater, "expected end of constant"))
2089 if (isPackedStruct) {
2091 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
2092 ID.Kind = ValID::t_Constant;
2097 return Error(ID.Loc, "constant vector must not be empty");
2099 if (!Elts[0]->getType()->isIntegerTy() &&
2100 !Elts[0]->getType()->isFloatingPointTy())
2101 return Error(FirstEltLoc,
2102 "vector elements must have integer or floating point type");
2104 // Verify that all the vector elements have the same type.
2105 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2106 if (Elts[i]->getType() != Elts[0]->getType())
2107 return Error(FirstEltLoc,
2108 "vector element #" + utostr(i) +
2109 " is not of type '" + Elts[0]->getType()->getDescription());
2111 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
2112 ID.Kind = ValID::t_Constant;
2115 case lltok::lsquare: { // Array Constant
2117 SmallVector<Constant*, 16> Elts;
2118 LocTy FirstEltLoc = Lex.getLoc();
2119 if (ParseGlobalValueVector(Elts) ||
2120 ParseToken(lltok::rsquare, "expected end of array constant"))
2123 // Handle empty element.
2125 // Use undef instead of an array because it's inconvenient to determine
2126 // the element type at this point, there being no elements to examine.
2127 ID.Kind = ValID::t_EmptyArray;
2131 if (!Elts[0]->getType()->isFirstClassType())
2132 return Error(FirstEltLoc, "invalid array element type: " +
2133 Elts[0]->getType()->getDescription());
2135 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2137 // Verify all elements are correct type!
2138 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2139 if (Elts[i]->getType() != Elts[0]->getType())
2140 return Error(FirstEltLoc,
2141 "array element #" + utostr(i) +
2142 " is not of type '" +Elts[0]->getType()->getDescription());
2145 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
2146 ID.Kind = ValID::t_Constant;
2149 case lltok::kw_c: // c "foo"
2151 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
2152 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2153 ID.Kind = ValID::t_Constant;
2156 case lltok::kw_asm: {
2157 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2158 bool HasSideEffect, AlignStack;
2160 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2161 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2162 ParseStringConstant(ID.StrVal) ||
2163 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2164 ParseToken(lltok::StringConstant, "expected constraint string"))
2166 ID.StrVal2 = Lex.getStrVal();
2167 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2168 ID.Kind = ValID::t_InlineAsm;
2172 case lltok::kw_blockaddress: {
2173 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2177 LocTy FnLoc, LabelLoc;
2179 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2181 ParseToken(lltok::comma, "expected comma in block address expression")||
2182 ParseValID(Label) ||
2183 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2186 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2187 return Error(Fn.Loc, "expected function name in blockaddress");
2188 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2189 return Error(Label.Loc, "expected basic block name in blockaddress");
2191 // Make a global variable as a placeholder for this reference.
2192 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2193 false, GlobalValue::InternalLinkage,
2195 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2196 ID.ConstantVal = FwdRef;
2197 ID.Kind = ValID::t_Constant;
2201 case lltok::kw_trunc:
2202 case lltok::kw_zext:
2203 case lltok::kw_sext:
2204 case lltok::kw_fptrunc:
2205 case lltok::kw_fpext:
2206 case lltok::kw_bitcast:
2207 case lltok::kw_uitofp:
2208 case lltok::kw_sitofp:
2209 case lltok::kw_fptoui:
2210 case lltok::kw_fptosi:
2211 case lltok::kw_inttoptr:
2212 case lltok::kw_ptrtoint: {
2213 unsigned Opc = Lex.getUIntVal();
2214 PATypeHolder DestTy(Type::getVoidTy(Context));
2217 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2218 ParseGlobalTypeAndValue(SrcVal) ||
2219 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2220 ParseType(DestTy) ||
2221 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2223 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2224 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2225 SrcVal->getType()->getDescription() + "' to '" +
2226 DestTy->getDescription() + "'");
2227 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2229 ID.Kind = ValID::t_Constant;
2232 case lltok::kw_extractvalue: {
2235 SmallVector<unsigned, 4> Indices;
2236 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2237 ParseGlobalTypeAndValue(Val) ||
2238 ParseIndexList(Indices) ||
2239 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2242 if (!Val->getType()->isAggregateType())
2243 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2244 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
2246 return Error(ID.Loc, "invalid indices for extractvalue");
2248 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
2249 ID.Kind = ValID::t_Constant;
2252 case lltok::kw_insertvalue: {
2254 Constant *Val0, *Val1;
2255 SmallVector<unsigned, 4> Indices;
2256 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2257 ParseGlobalTypeAndValue(Val0) ||
2258 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2259 ParseGlobalTypeAndValue(Val1) ||
2260 ParseIndexList(Indices) ||
2261 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2263 if (!Val0->getType()->isAggregateType())
2264 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2265 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
2267 return Error(ID.Loc, "invalid indices for insertvalue");
2268 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
2269 Indices.data(), Indices.size());
2270 ID.Kind = ValID::t_Constant;
2273 case lltok::kw_icmp:
2274 case lltok::kw_fcmp: {
2275 unsigned PredVal, Opc = Lex.getUIntVal();
2276 Constant *Val0, *Val1;
2278 if (ParseCmpPredicate(PredVal, Opc) ||
2279 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2280 ParseGlobalTypeAndValue(Val0) ||
2281 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2282 ParseGlobalTypeAndValue(Val1) ||
2283 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2286 if (Val0->getType() != Val1->getType())
2287 return Error(ID.Loc, "compare operands must have the same type");
2289 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2291 if (Opc == Instruction::FCmp) {
2292 if (!Val0->getType()->isFPOrFPVectorTy())
2293 return Error(ID.Loc, "fcmp requires floating point operands");
2294 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2296 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2297 if (!Val0->getType()->isIntOrIntVectorTy() &&
2298 !Val0->getType()->isPointerTy())
2299 return Error(ID.Loc, "icmp requires pointer or integer operands");
2300 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2302 ID.Kind = ValID::t_Constant;
2306 // Binary Operators.
2308 case lltok::kw_fadd:
2310 case lltok::kw_fsub:
2312 case lltok::kw_fmul:
2313 case lltok::kw_udiv:
2314 case lltok::kw_sdiv:
2315 case lltok::kw_fdiv:
2316 case lltok::kw_urem:
2317 case lltok::kw_srem:
2318 case lltok::kw_frem: {
2322 unsigned Opc = Lex.getUIntVal();
2323 Constant *Val0, *Val1;
2325 LocTy ModifierLoc = Lex.getLoc();
2326 if (Opc == Instruction::Add ||
2327 Opc == Instruction::Sub ||
2328 Opc == Instruction::Mul) {
2329 if (EatIfPresent(lltok::kw_nuw))
2331 if (EatIfPresent(lltok::kw_nsw)) {
2333 if (EatIfPresent(lltok::kw_nuw))
2336 } else if (Opc == Instruction::SDiv) {
2337 if (EatIfPresent(lltok::kw_exact))
2340 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2341 ParseGlobalTypeAndValue(Val0) ||
2342 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2343 ParseGlobalTypeAndValue(Val1) ||
2344 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2346 if (Val0->getType() != Val1->getType())
2347 return Error(ID.Loc, "operands of constexpr must have same type");
2348 if (!Val0->getType()->isIntOrIntVectorTy()) {
2350 return Error(ModifierLoc, "nuw only applies to integer operations");
2352 return Error(ModifierLoc, "nsw only applies to integer operations");
2354 // Check that the type is valid for the operator.
2356 case Instruction::Add:
2357 case Instruction::Sub:
2358 case Instruction::Mul:
2359 case Instruction::UDiv:
2360 case Instruction::SDiv:
2361 case Instruction::URem:
2362 case Instruction::SRem:
2363 if (!Val0->getType()->isIntOrIntVectorTy())
2364 return Error(ID.Loc, "constexpr requires integer operands");
2366 case Instruction::FAdd:
2367 case Instruction::FSub:
2368 case Instruction::FMul:
2369 case Instruction::FDiv:
2370 case Instruction::FRem:
2371 if (!Val0->getType()->isFPOrFPVectorTy())
2372 return Error(ID.Loc, "constexpr requires fp operands");
2374 default: llvm_unreachable("Unknown binary operator!");
2377 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2378 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2379 if (Exact) Flags |= SDivOperator::IsExact;
2380 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2382 ID.Kind = ValID::t_Constant;
2386 // Logical Operations
2388 case lltok::kw_lshr:
2389 case lltok::kw_ashr:
2392 case lltok::kw_xor: {
2393 unsigned Opc = Lex.getUIntVal();
2394 Constant *Val0, *Val1;
2396 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2397 ParseGlobalTypeAndValue(Val0) ||
2398 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2399 ParseGlobalTypeAndValue(Val1) ||
2400 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2402 if (Val0->getType() != Val1->getType())
2403 return Error(ID.Loc, "operands of constexpr must have same type");
2404 if (!Val0->getType()->isIntOrIntVectorTy())
2405 return Error(ID.Loc,
2406 "constexpr requires integer or integer vector operands");
2407 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2408 ID.Kind = ValID::t_Constant;
2412 case lltok::kw_getelementptr:
2413 case lltok::kw_shufflevector:
2414 case lltok::kw_insertelement:
2415 case lltok::kw_extractelement:
2416 case lltok::kw_select: {
2417 unsigned Opc = Lex.getUIntVal();
2418 SmallVector<Constant*, 16> Elts;
2419 bool InBounds = false;
2421 if (Opc == Instruction::GetElementPtr)
2422 InBounds = EatIfPresent(lltok::kw_inbounds);
2423 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2424 ParseGlobalValueVector(Elts) ||
2425 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2428 if (Opc == Instruction::GetElementPtr) {
2429 if (Elts.size() == 0 || !Elts[0]->getType()->isPointerTy())
2430 return Error(ID.Loc, "getelementptr requires pointer operand");
2432 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2433 (Value**)(Elts.data() + 1),
2435 return Error(ID.Loc, "invalid indices for getelementptr");
2436 ID.ConstantVal = InBounds ?
2437 ConstantExpr::getInBoundsGetElementPtr(Elts[0],
2440 ConstantExpr::getGetElementPtr(Elts[0],
2441 Elts.data() + 1, Elts.size() - 1);
2442 } else if (Opc == Instruction::Select) {
2443 if (Elts.size() != 3)
2444 return Error(ID.Loc, "expected three operands to select");
2445 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2447 return Error(ID.Loc, Reason);
2448 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2449 } else if (Opc == Instruction::ShuffleVector) {
2450 if (Elts.size() != 3)
2451 return Error(ID.Loc, "expected three operands to shufflevector");
2452 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2453 return Error(ID.Loc, "invalid operands to shufflevector");
2455 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2456 } else if (Opc == Instruction::ExtractElement) {
2457 if (Elts.size() != 2)
2458 return Error(ID.Loc, "expected two operands to extractelement");
2459 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2460 return Error(ID.Loc, "invalid extractelement operands");
2461 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2463 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2464 if (Elts.size() != 3)
2465 return Error(ID.Loc, "expected three operands to insertelement");
2466 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2467 return Error(ID.Loc, "invalid insertelement operands");
2469 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2472 ID.Kind = ValID::t_Constant;
2481 /// ParseGlobalValue - Parse a global value with the specified type.
2482 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&C) {
2486 bool Parsed = ParseValID(ID) ||
2487 ConvertValIDToValue(Ty, ID, V, NULL);
2488 if (V && !(C = dyn_cast<Constant>(V)))
2489 return Error(ID.Loc, "global values must be constants");
2493 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2494 PATypeHolder Type(Type::getVoidTy(Context));
2495 return ParseType(Type) ||
2496 ParseGlobalValue(Type, V);
2499 /// ParseGlobalValueVector
2501 /// ::= TypeAndValue (',' TypeAndValue)*
2502 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2504 if (Lex.getKind() == lltok::rbrace ||
2505 Lex.getKind() == lltok::rsquare ||
2506 Lex.getKind() == lltok::greater ||
2507 Lex.getKind() == lltok::rparen)
2511 if (ParseGlobalTypeAndValue(C)) return true;
2514 while (EatIfPresent(lltok::comma)) {
2515 if (ParseGlobalTypeAndValue(C)) return true;
2522 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2523 assert(Lex.getKind() == lltok::lbrace);
2526 SmallVector<Value*, 16> Elts;
2527 if (ParseMDNodeVector(Elts, PFS) ||
2528 ParseToken(lltok::rbrace, "expected end of metadata node"))
2531 ID.MDNodeVal = MDNode::get(Context, Elts.data(), Elts.size());
2532 ID.Kind = ValID::t_MDNode;
2536 /// ParseMetadataValue
2540 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2541 assert(Lex.getKind() == lltok::exclaim);
2546 if (Lex.getKind() == lltok::lbrace)
2547 return ParseMetadataListValue(ID, PFS);
2549 // Standalone metadata reference
2551 if (Lex.getKind() == lltok::APSInt) {
2552 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2553 ID.Kind = ValID::t_MDNode;
2558 // ::= '!' STRINGCONSTANT
2559 if (ParseMDString(ID.MDStringVal)) return true;
2560 ID.Kind = ValID::t_MDString;
2565 //===----------------------------------------------------------------------===//
2566 // Function Parsing.
2567 //===----------------------------------------------------------------------===//
2569 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2570 PerFunctionState *PFS) {
2571 if (Ty->isFunctionTy())
2572 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2575 default: llvm_unreachable("Unknown ValID!");
2576 case ValID::t_LocalID:
2577 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2578 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2580 case ValID::t_LocalName:
2581 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2582 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2584 case ValID::t_InlineAsm: {
2585 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2586 const FunctionType *FTy =
2587 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2588 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2589 return Error(ID.Loc, "invalid type for inline asm constraint string");
2590 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2593 case ValID::t_MDNode:
2594 if (!Ty->isMetadataTy())
2595 return Error(ID.Loc, "metadata value must have metadata type");
2598 case ValID::t_MDString:
2599 if (!Ty->isMetadataTy())
2600 return Error(ID.Loc, "metadata value must have metadata type");
2603 case ValID::t_GlobalName:
2604 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2606 case ValID::t_GlobalID:
2607 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2609 case ValID::t_APSInt:
2610 if (!Ty->isIntegerTy())
2611 return Error(ID.Loc, "integer constant must have integer type");
2612 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2613 V = ConstantInt::get(Context, ID.APSIntVal);
2615 case ValID::t_APFloat:
2616 if (!Ty->isFloatingPointTy() ||
2617 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2618 return Error(ID.Loc, "floating point constant invalid for type");
2620 // The lexer has no type info, so builds all float and double FP constants
2621 // as double. Fix this here. Long double does not need this.
2622 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2625 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2628 V = ConstantFP::get(Context, ID.APFloatVal);
2630 if (V->getType() != Ty)
2631 return Error(ID.Loc, "floating point constant does not have type '" +
2632 Ty->getDescription() + "'");
2636 if (!Ty->isPointerTy())
2637 return Error(ID.Loc, "null must be a pointer type");
2638 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2640 case ValID::t_Undef:
2641 // FIXME: LabelTy should not be a first-class type.
2642 if ((!Ty->isFirstClassType() || Ty->isLabelTy()) &&
2644 return Error(ID.Loc, "invalid type for undef constant");
2645 V = UndefValue::get(Ty);
2647 case ValID::t_EmptyArray:
2648 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2649 return Error(ID.Loc, "invalid empty array initializer");
2650 V = UndefValue::get(Ty);
2653 // FIXME: LabelTy should not be a first-class type.
2654 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2655 return Error(ID.Loc, "invalid type for null constant");
2656 V = Constant::getNullValue(Ty);
2658 case ValID::t_Constant:
2659 if (ID.ConstantVal->getType() != Ty) {
2660 // Allow a constant struct with a single member to be converted
2661 // to a union, if the union has a member which is the same type
2662 // as the struct member.
2663 if (const UnionType* utype = dyn_cast<UnionType>(Ty)) {
2664 return ParseUnionValue(utype, ID, V);
2667 return Error(ID.Loc, "constant expression type mismatch");
2675 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2678 return ParseValID(ID, &PFS) ||
2679 ConvertValIDToValue(Ty, ID, V, &PFS);
2682 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2683 PATypeHolder T(Type::getVoidTy(Context));
2684 return ParseType(T) ||
2685 ParseValue(T, V, PFS);
2688 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2689 PerFunctionState &PFS) {
2692 if (ParseTypeAndValue(V, PFS)) return true;
2693 if (!isa<BasicBlock>(V))
2694 return Error(Loc, "expected a basic block");
2695 BB = cast<BasicBlock>(V);
2699 bool LLParser::ParseUnionValue(const UnionType* utype, ValID &ID, Value *&V) {
2700 if (const StructType* stype = dyn_cast<StructType>(ID.ConstantVal->getType())) {
2701 if (stype->getNumContainedTypes() != 1)
2702 return Error(ID.Loc, "constant expression type mismatch");
2703 int index = utype->getElementTypeIndex(stype->getContainedType(0));
2705 return Error(ID.Loc, "initializer type is not a member of the union");
2707 V = ConstantUnion::get(
2708 utype, cast<Constant>(ID.ConstantVal->getOperand(0)));
2712 return Error(ID.Loc, "constant expression type mismatch");
2717 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2718 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2719 /// OptionalAlign OptGC
2720 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2721 // Parse the linkage.
2722 LocTy LinkageLoc = Lex.getLoc();
2725 unsigned Visibility, RetAttrs;
2727 PATypeHolder RetType(Type::getVoidTy(Context));
2728 LocTy RetTypeLoc = Lex.getLoc();
2729 if (ParseOptionalLinkage(Linkage) ||
2730 ParseOptionalVisibility(Visibility) ||
2731 ParseOptionalCallingConv(CC) ||
2732 ParseOptionalAttrs(RetAttrs, 1) ||
2733 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2736 // Verify that the linkage is ok.
2737 switch ((GlobalValue::LinkageTypes)Linkage) {
2738 case GlobalValue::ExternalLinkage:
2739 break; // always ok.
2740 case GlobalValue::DLLImportLinkage:
2741 case GlobalValue::ExternalWeakLinkage:
2743 return Error(LinkageLoc, "invalid linkage for function definition");
2745 case GlobalValue::PrivateLinkage:
2746 case GlobalValue::LinkerPrivateLinkage:
2747 case GlobalValue::LinkerPrivateWeakLinkage:
2748 case GlobalValue::LinkerPrivateWeakDefAutoLinkage:
2749 case GlobalValue::InternalLinkage:
2750 case GlobalValue::AvailableExternallyLinkage:
2751 case GlobalValue::LinkOnceAnyLinkage:
2752 case GlobalValue::LinkOnceODRLinkage:
2753 case GlobalValue::WeakAnyLinkage:
2754 case GlobalValue::WeakODRLinkage:
2755 case GlobalValue::DLLExportLinkage:
2757 return Error(LinkageLoc, "invalid linkage for function declaration");
2759 case GlobalValue::AppendingLinkage:
2760 case GlobalValue::CommonLinkage:
2761 return Error(LinkageLoc, "invalid function linkage type");
2764 if (!FunctionType::isValidReturnType(RetType) ||
2765 RetType->isOpaqueTy())
2766 return Error(RetTypeLoc, "invalid function return type");
2768 LocTy NameLoc = Lex.getLoc();
2770 std::string FunctionName;
2771 if (Lex.getKind() == lltok::GlobalVar) {
2772 FunctionName = Lex.getStrVal();
2773 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2774 unsigned NameID = Lex.getUIntVal();
2776 if (NameID != NumberedVals.size())
2777 return TokError("function expected to be numbered '%" +
2778 utostr(NumberedVals.size()) + "'");
2780 return TokError("expected function name");
2785 if (Lex.getKind() != lltok::lparen)
2786 return TokError("expected '(' in function argument list");
2788 std::vector<ArgInfo> ArgList;
2791 std::string Section;
2795 if (ParseArgumentList(ArgList, isVarArg, false) ||
2796 ParseOptionalAttrs(FuncAttrs, 2) ||
2797 (EatIfPresent(lltok::kw_section) &&
2798 ParseStringConstant(Section)) ||
2799 ParseOptionalAlignment(Alignment) ||
2800 (EatIfPresent(lltok::kw_gc) &&
2801 ParseStringConstant(GC)))
2804 // If the alignment was parsed as an attribute, move to the alignment field.
2805 if (FuncAttrs & Attribute::Alignment) {
2806 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2807 FuncAttrs &= ~Attribute::Alignment;
2810 // Okay, if we got here, the function is syntactically valid. Convert types
2811 // and do semantic checks.
2812 std::vector<const Type*> ParamTypeList;
2813 SmallVector<AttributeWithIndex, 8> Attrs;
2814 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2816 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2817 if (FuncAttrs & ObsoleteFuncAttrs) {
2818 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2819 FuncAttrs &= ~ObsoleteFuncAttrs;
2822 if (RetAttrs != Attribute::None)
2823 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2825 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2826 ParamTypeList.push_back(ArgList[i].Type);
2827 if (ArgList[i].Attrs != Attribute::None)
2828 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2831 if (FuncAttrs != Attribute::None)
2832 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2834 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2836 if (PAL.paramHasAttr(1, Attribute::StructRet) && !RetType->isVoidTy())
2837 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2839 const FunctionType *FT =
2840 FunctionType::get(RetType, ParamTypeList, isVarArg);
2841 const PointerType *PFT = PointerType::getUnqual(FT);
2844 if (!FunctionName.empty()) {
2845 // If this was a definition of a forward reference, remove the definition
2846 // from the forward reference table and fill in the forward ref.
2847 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2848 ForwardRefVals.find(FunctionName);
2849 if (FRVI != ForwardRefVals.end()) {
2850 Fn = M->getFunction(FunctionName);
2851 if (Fn->getType() != PFT)
2852 return Error(FRVI->second.second, "invalid forward reference to "
2853 "function '" + FunctionName + "' with wrong type!");
2855 ForwardRefVals.erase(FRVI);
2856 } else if ((Fn = M->getFunction(FunctionName))) {
2857 // If this function already exists in the symbol table, then it is
2858 // multiply defined. We accept a few cases for old backwards compat.
2859 // FIXME: Remove this stuff for LLVM 3.0.
2860 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2861 (!Fn->isDeclaration() && isDefine)) {
2862 // If the redefinition has different type or different attributes,
2863 // reject it. If both have bodies, reject it.
2864 return Error(NameLoc, "invalid redefinition of function '" +
2865 FunctionName + "'");
2866 } else if (Fn->isDeclaration()) {
2867 // Make sure to strip off any argument names so we can't get conflicts.
2868 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2872 } else if (M->getNamedValue(FunctionName)) {
2873 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2877 // If this is a definition of a forward referenced function, make sure the
2879 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2880 = ForwardRefValIDs.find(NumberedVals.size());
2881 if (I != ForwardRefValIDs.end()) {
2882 Fn = cast<Function>(I->second.first);
2883 if (Fn->getType() != PFT)
2884 return Error(NameLoc, "type of definition and forward reference of '@" +
2885 utostr(NumberedVals.size()) +"' disagree");
2886 ForwardRefValIDs.erase(I);
2891 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2892 else // Move the forward-reference to the correct spot in the module.
2893 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2895 if (FunctionName.empty())
2896 NumberedVals.push_back(Fn);
2898 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2899 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2900 Fn->setCallingConv(CC);
2901 Fn->setAttributes(PAL);
2902 Fn->setAlignment(Alignment);
2903 Fn->setSection(Section);
2904 if (!GC.empty()) Fn->setGC(GC.c_str());
2906 // Add all of the arguments we parsed to the function.
2907 Function::arg_iterator ArgIt = Fn->arg_begin();
2908 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2909 // If we run out of arguments in the Function prototype, exit early.
2910 // FIXME: REMOVE THIS IN LLVM 3.0, this is just for the mismatch case above.
2911 if (ArgIt == Fn->arg_end()) break;
2913 // If the argument has a name, insert it into the argument symbol table.
2914 if (ArgList[i].Name.empty()) continue;
2916 // Set the name, if it conflicted, it will be auto-renamed.
2917 ArgIt->setName(ArgList[i].Name);
2919 if (ArgIt->getNameStr() != ArgList[i].Name)
2920 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2921 ArgList[i].Name + "'");
2928 /// ParseFunctionBody
2929 /// ::= '{' BasicBlock+ '}'
2930 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2932 bool LLParser::ParseFunctionBody(Function &Fn) {
2933 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2934 return TokError("expected '{' in function body");
2935 Lex.Lex(); // eat the {.
2937 int FunctionNumber = -1;
2938 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2940 PerFunctionState PFS(*this, Fn, FunctionNumber);
2942 // We need at least one basic block.
2943 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_end)
2944 return TokError("function body requires at least one basic block");
2946 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2947 if (ParseBasicBlock(PFS)) return true;
2952 // Verify function is ok.
2953 return PFS.FinishFunction();
2957 /// ::= LabelStr? Instruction*
2958 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2959 // If this basic block starts out with a name, remember it.
2961 LocTy NameLoc = Lex.getLoc();
2962 if (Lex.getKind() == lltok::LabelStr) {
2963 Name = Lex.getStrVal();
2967 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2968 if (BB == 0) return true;
2970 std::string NameStr;
2972 // Parse the instructions in this block until we get a terminator.
2974 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2976 // This instruction may have three possibilities for a name: a) none
2977 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2978 LocTy NameLoc = Lex.getLoc();
2982 if (Lex.getKind() == lltok::LocalVarID) {
2983 NameID = Lex.getUIntVal();
2985 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2987 } else if (Lex.getKind() == lltok::LocalVar ||
2988 // FIXME: REMOVE IN LLVM 3.0
2989 Lex.getKind() == lltok::StringConstant) {
2990 NameStr = Lex.getStrVal();
2992 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2996 switch (ParseInstruction(Inst, BB, PFS)) {
2997 default: assert(0 && "Unknown ParseInstruction result!");
2998 case InstError: return true;
3000 BB->getInstList().push_back(Inst);
3002 // With a normal result, we check to see if the instruction is followed by
3003 // a comma and metadata.
3004 if (EatIfPresent(lltok::comma))
3005 if (ParseInstructionMetadata(Inst, &PFS))
3008 case InstExtraComma:
3009 BB->getInstList().push_back(Inst);
3011 // If the instruction parser ate an extra comma at the end of it, it
3012 // *must* be followed by metadata.
3013 if (ParseInstructionMetadata(Inst, &PFS))
3018 // Set the name on the instruction.
3019 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3020 } while (!isa<TerminatorInst>(Inst));
3025 //===----------------------------------------------------------------------===//
3026 // Instruction Parsing.
3027 //===----------------------------------------------------------------------===//
3029 /// ParseInstruction - Parse one of the many different instructions.
3031 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3032 PerFunctionState &PFS) {
3033 lltok::Kind Token = Lex.getKind();
3034 if (Token == lltok::Eof)
3035 return TokError("found end of file when expecting more instructions");
3036 LocTy Loc = Lex.getLoc();
3037 unsigned KeywordVal = Lex.getUIntVal();
3038 Lex.Lex(); // Eat the keyword.
3041 default: return Error(Loc, "expected instruction opcode");
3042 // Terminator Instructions.
3043 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
3044 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3045 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3046 case lltok::kw_br: return ParseBr(Inst, PFS);
3047 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3048 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3049 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3050 // Binary Operators.
3053 case lltok::kw_mul: {
3056 LocTy ModifierLoc = Lex.getLoc();
3057 if (EatIfPresent(lltok::kw_nuw))
3059 if (EatIfPresent(lltok::kw_nsw)) {
3061 if (EatIfPresent(lltok::kw_nuw))
3064 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3066 if (!Inst->getType()->isIntOrIntVectorTy()) {
3068 return Error(ModifierLoc, "nuw only applies to integer operations");
3070 return Error(ModifierLoc, "nsw only applies to integer operations");
3073 cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3075 cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3079 case lltok::kw_fadd:
3080 case lltok::kw_fsub:
3081 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3083 case lltok::kw_sdiv: {
3085 if (EatIfPresent(lltok::kw_exact))
3087 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3090 cast<BinaryOperator>(Inst)->setIsExact(true);
3094 case lltok::kw_udiv:
3095 case lltok::kw_urem:
3096 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3097 case lltok::kw_fdiv:
3098 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3100 case lltok::kw_lshr:
3101 case lltok::kw_ashr:
3104 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3105 case lltok::kw_icmp:
3106 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3108 case lltok::kw_trunc:
3109 case lltok::kw_zext:
3110 case lltok::kw_sext:
3111 case lltok::kw_fptrunc:
3112 case lltok::kw_fpext:
3113 case lltok::kw_bitcast:
3114 case lltok::kw_uitofp:
3115 case lltok::kw_sitofp:
3116 case lltok::kw_fptoui:
3117 case lltok::kw_fptosi:
3118 case lltok::kw_inttoptr:
3119 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3121 case lltok::kw_select: return ParseSelect(Inst, PFS);
3122 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3123 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3124 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3125 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3126 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3127 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3128 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3130 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3131 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, BB, false);
3132 case lltok::kw_free: return ParseFree(Inst, PFS, BB);
3133 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
3134 case lltok::kw_store: return ParseStore(Inst, PFS, false);
3135 case lltok::kw_volatile:
3136 if (EatIfPresent(lltok::kw_load))
3137 return ParseLoad(Inst, PFS, true);
3138 else if (EatIfPresent(lltok::kw_store))
3139 return ParseStore(Inst, PFS, true);
3141 return TokError("expected 'load' or 'store'");
3142 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
3143 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3144 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3145 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3149 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3150 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3151 if (Opc == Instruction::FCmp) {
3152 switch (Lex.getKind()) {
3153 default: TokError("expected fcmp predicate (e.g. 'oeq')");
3154 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3155 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3156 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3157 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3158 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3159 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3160 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3161 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3162 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3163 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3164 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3165 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3166 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3167 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3168 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3169 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3172 switch (Lex.getKind()) {
3173 default: TokError("expected icmp predicate (e.g. 'eq')");
3174 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3175 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3176 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3177 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3178 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3179 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3180 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3181 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3182 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3183 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3190 //===----------------------------------------------------------------------===//
3191 // Terminator Instructions.
3192 //===----------------------------------------------------------------------===//
3194 /// ParseRet - Parse a return instruction.
3195 /// ::= 'ret' void (',' !dbg, !1)*
3196 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3197 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ (',' !dbg, !1)*
3198 /// [[obsolete: LLVM 3.0]]
3199 int LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3200 PerFunctionState &PFS) {
3201 PATypeHolder Ty(Type::getVoidTy(Context));
3202 if (ParseType(Ty, true /*void allowed*/)) return true;
3204 if (Ty->isVoidTy()) {
3205 Inst = ReturnInst::Create(Context);
3210 if (ParseValue(Ty, RV, PFS)) return true;
3212 bool ExtraComma = false;
3213 if (EatIfPresent(lltok::comma)) {
3214 // Parse optional custom metadata, e.g. !dbg
3215 if (Lex.getKind() == lltok::MetadataVar) {
3218 // The normal case is one return value.
3219 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring
3220 // use of 'ret {i32,i32} {i32 1, i32 2}'
3221 SmallVector<Value*, 8> RVs;
3225 // If optional custom metadata, e.g. !dbg is seen then this is the
3227 if (Lex.getKind() == lltok::MetadataVar)
3229 if (ParseTypeAndValue(RV, PFS)) return true;
3231 } while (EatIfPresent(lltok::comma));
3233 RV = UndefValue::get(PFS.getFunction().getReturnType());
3234 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
3235 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
3236 BB->getInstList().push_back(I);
3242 Inst = ReturnInst::Create(Context, RV);
3243 return ExtraComma ? InstExtraComma : InstNormal;
3248 /// ::= 'br' TypeAndValue
3249 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3250 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3253 BasicBlock *Op1, *Op2;
3254 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3256 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3257 Inst = BranchInst::Create(BB);
3261 if (Op0->getType() != Type::getInt1Ty(Context))
3262 return Error(Loc, "branch condition must have 'i1' type");
3264 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3265 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3266 ParseToken(lltok::comma, "expected ',' after true destination") ||
3267 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3270 Inst = BranchInst::Create(Op1, Op2, Op0);
3276 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3278 /// ::= (TypeAndValue ',' TypeAndValue)*
3279 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3280 LocTy CondLoc, BBLoc;
3282 BasicBlock *DefaultBB;
3283 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3284 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3285 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3286 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3289 if (!Cond->getType()->isIntegerTy())
3290 return Error(CondLoc, "switch condition must have integer type");
3292 // Parse the jump table pairs.
3293 SmallPtrSet<Value*, 32> SeenCases;
3294 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3295 while (Lex.getKind() != lltok::rsquare) {
3299 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3300 ParseToken(lltok::comma, "expected ',' after case value") ||
3301 ParseTypeAndBasicBlock(DestBB, PFS))
3304 if (!SeenCases.insert(Constant))
3305 return Error(CondLoc, "duplicate case value in switch");
3306 if (!isa<ConstantInt>(Constant))
3307 return Error(CondLoc, "case value is not a constant integer");
3309 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3312 Lex.Lex(); // Eat the ']'.
3314 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3315 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3316 SI->addCase(Table[i].first, Table[i].second);
3323 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3324 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3327 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3328 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3329 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3332 if (!Address->getType()->isPointerTy())
3333 return Error(AddrLoc, "indirectbr address must have pointer type");
3335 // Parse the destination list.
3336 SmallVector<BasicBlock*, 16> DestList;
3338 if (Lex.getKind() != lltok::rsquare) {
3340 if (ParseTypeAndBasicBlock(DestBB, PFS))
3342 DestList.push_back(DestBB);
3344 while (EatIfPresent(lltok::comma)) {
3345 if (ParseTypeAndBasicBlock(DestBB, PFS))
3347 DestList.push_back(DestBB);
3351 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3354 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3355 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3356 IBI->addDestination(DestList[i]);
3363 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3364 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3365 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3366 LocTy CallLoc = Lex.getLoc();
3367 unsigned RetAttrs, FnAttrs;
3369 PATypeHolder RetType(Type::getVoidTy(Context));
3372 SmallVector<ParamInfo, 16> ArgList;
3374 BasicBlock *NormalBB, *UnwindBB;
3375 if (ParseOptionalCallingConv(CC) ||
3376 ParseOptionalAttrs(RetAttrs, 1) ||
3377 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3378 ParseValID(CalleeID) ||
3379 ParseParameterList(ArgList, PFS) ||
3380 ParseOptionalAttrs(FnAttrs, 2) ||
3381 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3382 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3383 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3384 ParseTypeAndBasicBlock(UnwindBB, PFS))
3387 // If RetType is a non-function pointer type, then this is the short syntax
3388 // for the call, which means that RetType is just the return type. Infer the
3389 // rest of the function argument types from the arguments that are present.
3390 const PointerType *PFTy = 0;
3391 const FunctionType *Ty = 0;
3392 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3393 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3394 // Pull out the types of all of the arguments...
3395 std::vector<const Type*> ParamTypes;
3396 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3397 ParamTypes.push_back(ArgList[i].V->getType());
3399 if (!FunctionType::isValidReturnType(RetType))
3400 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3402 Ty = FunctionType::get(RetType, ParamTypes, false);
3403 PFTy = PointerType::getUnqual(Ty);
3406 // Look up the callee.
3408 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3410 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3411 // function attributes.
3412 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3413 if (FnAttrs & ObsoleteFuncAttrs) {
3414 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3415 FnAttrs &= ~ObsoleteFuncAttrs;
3418 // Set up the Attributes for the function.
3419 SmallVector<AttributeWithIndex, 8> Attrs;
3420 if (RetAttrs != Attribute::None)
3421 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3423 SmallVector<Value*, 8> Args;
3425 // Loop through FunctionType's arguments and ensure they are specified
3426 // correctly. Also, gather any parameter attributes.
3427 FunctionType::param_iterator I = Ty->param_begin();
3428 FunctionType::param_iterator E = Ty->param_end();
3429 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3430 const Type *ExpectedTy = 0;
3433 } else if (!Ty->isVarArg()) {
3434 return Error(ArgList[i].Loc, "too many arguments specified");
3437 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3438 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3439 ExpectedTy->getDescription() + "'");
3440 Args.push_back(ArgList[i].V);
3441 if (ArgList[i].Attrs != Attribute::None)
3442 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3446 return Error(CallLoc, "not enough parameters specified for call");
3448 if (FnAttrs != Attribute::None)
3449 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3451 // Finish off the Attributes and check them
3452 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3454 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB,
3455 Args.begin(), Args.end());
3456 II->setCallingConv(CC);
3457 II->setAttributes(PAL);
3464 //===----------------------------------------------------------------------===//
3465 // Binary Operators.
3466 //===----------------------------------------------------------------------===//
3469 /// ::= ArithmeticOps TypeAndValue ',' Value
3471 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3472 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3473 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3474 unsigned Opc, unsigned OperandType) {
3475 LocTy Loc; Value *LHS, *RHS;
3476 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3477 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3478 ParseValue(LHS->getType(), RHS, PFS))
3482 switch (OperandType) {
3483 default: llvm_unreachable("Unknown operand type!");
3484 case 0: // int or FP.
3485 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3486 LHS->getType()->isFPOrFPVectorTy();
3488 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3489 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3493 return Error(Loc, "invalid operand type for instruction");
3495 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3500 /// ::= ArithmeticOps TypeAndValue ',' Value {
3501 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3503 LocTy Loc; Value *LHS, *RHS;
3504 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3505 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3506 ParseValue(LHS->getType(), RHS, PFS))
3509 if (!LHS->getType()->isIntOrIntVectorTy())
3510 return Error(Loc,"instruction requires integer or integer vector operands");
3512 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3518 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3519 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3520 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3522 // Parse the integer/fp comparison predicate.
3526 if (ParseCmpPredicate(Pred, Opc) ||
3527 ParseTypeAndValue(LHS, Loc, PFS) ||
3528 ParseToken(lltok::comma, "expected ',' after compare value") ||
3529 ParseValue(LHS->getType(), RHS, PFS))
3532 if (Opc == Instruction::FCmp) {
3533 if (!LHS->getType()->isFPOrFPVectorTy())
3534 return Error(Loc, "fcmp requires floating point operands");
3535 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3537 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3538 if (!LHS->getType()->isIntOrIntVectorTy() &&
3539 !LHS->getType()->isPointerTy())
3540 return Error(Loc, "icmp requires integer operands");
3541 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3546 //===----------------------------------------------------------------------===//
3547 // Other Instructions.
3548 //===----------------------------------------------------------------------===//
3552 /// ::= CastOpc TypeAndValue 'to' Type
3553 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3555 LocTy Loc; Value *Op;
3556 PATypeHolder DestTy(Type::getVoidTy(Context));
3557 if (ParseTypeAndValue(Op, Loc, PFS) ||
3558 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3562 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3563 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3564 return Error(Loc, "invalid cast opcode for cast from '" +
3565 Op->getType()->getDescription() + "' to '" +
3566 DestTy->getDescription() + "'");
3568 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3573 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3574 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3576 Value *Op0, *Op1, *Op2;
3577 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3578 ParseToken(lltok::comma, "expected ',' after select condition") ||
3579 ParseTypeAndValue(Op1, PFS) ||
3580 ParseToken(lltok::comma, "expected ',' after select value") ||
3581 ParseTypeAndValue(Op2, PFS))
3584 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3585 return Error(Loc, Reason);
3587 Inst = SelectInst::Create(Op0, Op1, Op2);
3592 /// ::= 'va_arg' TypeAndValue ',' Type
3593 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3595 PATypeHolder EltTy(Type::getVoidTy(Context));
3597 if (ParseTypeAndValue(Op, PFS) ||
3598 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3599 ParseType(EltTy, TypeLoc))
3602 if (!EltTy->isFirstClassType())
3603 return Error(TypeLoc, "va_arg requires operand with first class type");
3605 Inst = new VAArgInst(Op, EltTy);
3609 /// ParseExtractElement
3610 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3611 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3614 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3615 ParseToken(lltok::comma, "expected ',' after extract value") ||
3616 ParseTypeAndValue(Op1, PFS))
3619 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3620 return Error(Loc, "invalid extractelement operands");
3622 Inst = ExtractElementInst::Create(Op0, Op1);
3626 /// ParseInsertElement
3627 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3628 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3630 Value *Op0, *Op1, *Op2;
3631 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3632 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3633 ParseTypeAndValue(Op1, PFS) ||
3634 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3635 ParseTypeAndValue(Op2, PFS))
3638 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3639 return Error(Loc, "invalid insertelement operands");
3641 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3645 /// ParseShuffleVector
3646 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3647 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3649 Value *Op0, *Op1, *Op2;
3650 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3651 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3652 ParseTypeAndValue(Op1, PFS) ||
3653 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3654 ParseTypeAndValue(Op2, PFS))
3657 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3658 return Error(Loc, "invalid extractelement operands");
3660 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3665 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3666 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3667 PATypeHolder Ty(Type::getVoidTy(Context));
3669 LocTy TypeLoc = Lex.getLoc();
3671 if (ParseType(Ty) ||
3672 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3673 ParseValue(Ty, Op0, PFS) ||
3674 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3675 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3676 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3679 bool AteExtraComma = false;
3680 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3682 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3684 if (!EatIfPresent(lltok::comma))
3687 if (Lex.getKind() == lltok::MetadataVar) {
3688 AteExtraComma = true;
3692 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3693 ParseValue(Ty, Op0, PFS) ||
3694 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3695 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3696 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3700 if (!Ty->isFirstClassType())
3701 return Error(TypeLoc, "phi node must have first class type");
3703 PHINode *PN = PHINode::Create(Ty);
3704 PN->reserveOperandSpace(PHIVals.size());
3705 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3706 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3708 return AteExtraComma ? InstExtraComma : InstNormal;
3712 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3713 /// ParameterList OptionalAttrs
3714 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3716 unsigned RetAttrs, FnAttrs;
3718 PATypeHolder RetType(Type::getVoidTy(Context));
3721 SmallVector<ParamInfo, 16> ArgList;
3722 LocTy CallLoc = Lex.getLoc();
3724 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3725 ParseOptionalCallingConv(CC) ||
3726 ParseOptionalAttrs(RetAttrs, 1) ||
3727 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3728 ParseValID(CalleeID) ||
3729 ParseParameterList(ArgList, PFS) ||
3730 ParseOptionalAttrs(FnAttrs, 2))
3733 // If RetType is a non-function pointer type, then this is the short syntax
3734 // for the call, which means that RetType is just the return type. Infer the
3735 // rest of the function argument types from the arguments that are present.
3736 const PointerType *PFTy = 0;
3737 const FunctionType *Ty = 0;
3738 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3739 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3740 // Pull out the types of all of the arguments...
3741 std::vector<const Type*> ParamTypes;
3742 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3743 ParamTypes.push_back(ArgList[i].V->getType());
3745 if (!FunctionType::isValidReturnType(RetType))
3746 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3748 Ty = FunctionType::get(RetType, ParamTypes, false);
3749 PFTy = PointerType::getUnqual(Ty);
3752 // Look up the callee.
3754 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3756 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3757 // function attributes.
3758 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3759 if (FnAttrs & ObsoleteFuncAttrs) {
3760 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3761 FnAttrs &= ~ObsoleteFuncAttrs;
3764 // Set up the Attributes for the function.
3765 SmallVector<AttributeWithIndex, 8> Attrs;
3766 if (RetAttrs != Attribute::None)
3767 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3769 SmallVector<Value*, 8> Args;
3771 // Loop through FunctionType's arguments and ensure they are specified
3772 // correctly. Also, gather any parameter attributes.
3773 FunctionType::param_iterator I = Ty->param_begin();
3774 FunctionType::param_iterator E = Ty->param_end();
3775 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3776 const Type *ExpectedTy = 0;
3779 } else if (!Ty->isVarArg()) {
3780 return Error(ArgList[i].Loc, "too many arguments specified");
3783 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3784 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3785 ExpectedTy->getDescription() + "'");
3786 Args.push_back(ArgList[i].V);
3787 if (ArgList[i].Attrs != Attribute::None)
3788 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3792 return Error(CallLoc, "not enough parameters specified for call");
3794 if (FnAttrs != Attribute::None)
3795 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3797 // Finish off the Attributes and check them
3798 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3800 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3801 CI->setTailCall(isTail);
3802 CI->setCallingConv(CC);
3803 CI->setAttributes(PAL);
3808 //===----------------------------------------------------------------------===//
3809 // Memory Instructions.
3810 //===----------------------------------------------------------------------===//
3813 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalInfo)?
3814 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3815 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3816 BasicBlock* BB, bool isAlloca) {
3817 PATypeHolder Ty(Type::getVoidTy(Context));
3820 unsigned Alignment = 0;
3821 if (ParseType(Ty)) return true;
3823 bool AteExtraComma = false;
3824 if (EatIfPresent(lltok::comma)) {
3825 if (Lex.getKind() == lltok::kw_align) {
3826 if (ParseOptionalAlignment(Alignment)) return true;
3827 } else if (Lex.getKind() == lltok::MetadataVar) {
3828 AteExtraComma = true;
3830 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3831 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3836 if (Size && !Size->getType()->isIntegerTy())
3837 return Error(SizeLoc, "element count must have integer type");
3840 Inst = new AllocaInst(Ty, Size, Alignment);
3841 return AteExtraComma ? InstExtraComma : InstNormal;
3844 // Autoupgrade old malloc instruction to malloc call.
3845 // FIXME: Remove in LLVM 3.0.
3846 if (Size && !Size->getType()->isIntegerTy(32))
3847 return Error(SizeLoc, "element count must be i32");
3848 const Type *IntPtrTy = Type::getInt32Ty(Context);
3849 Constant *AllocSize = ConstantExpr::getSizeOf(Ty);
3850 AllocSize = ConstantExpr::getTruncOrBitCast(AllocSize, IntPtrTy);
3852 // Prototype malloc as "void *(int32)".
3853 // This function is renamed as "malloc" in ValidateEndOfModule().
3854 MallocF = cast<Function>(
3855 M->getOrInsertFunction("", Type::getInt8PtrTy(Context), IntPtrTy, NULL));
3856 Inst = CallInst::CreateMalloc(BB, IntPtrTy, Ty, AllocSize, Size, MallocF);
3857 return AteExtraComma ? InstExtraComma : InstNormal;
3861 /// ::= 'free' TypeAndValue
3862 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS,
3864 Value *Val; LocTy Loc;
3865 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3866 if (!Val->getType()->isPointerTy())
3867 return Error(Loc, "operand to free must be a pointer");
3868 Inst = CallInst::CreateFree(Val, BB);
3873 /// ::= 'volatile'? 'load' TypeAndValue (',' OptionalInfo)?
3874 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3876 Value *Val; LocTy Loc;
3877 unsigned Alignment = 0;
3878 bool AteExtraComma = false;
3879 if (ParseTypeAndValue(Val, Loc, PFS) ||
3880 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3883 if (!Val->getType()->isPointerTy() ||
3884 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3885 return Error(Loc, "load operand must be a pointer to a first class type");
3887 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3888 return AteExtraComma ? InstExtraComma : InstNormal;
3892 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3893 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3895 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3896 unsigned Alignment = 0;
3897 bool AteExtraComma = false;
3898 if (ParseTypeAndValue(Val, Loc, PFS) ||
3899 ParseToken(lltok::comma, "expected ',' after store operand") ||
3900 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3901 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3904 if (!Ptr->getType()->isPointerTy())
3905 return Error(PtrLoc, "store operand must be a pointer");
3906 if (!Val->getType()->isFirstClassType())
3907 return Error(Loc, "store operand must be a first class value");
3908 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3909 return Error(Loc, "stored value and pointer type do not match");
3911 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3912 return AteExtraComma ? InstExtraComma : InstNormal;
3916 /// ::= 'getresult' TypeAndValue ',' i32
3917 /// FIXME: Remove support for getresult in LLVM 3.0
3918 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3919 Value *Val; LocTy ValLoc, EltLoc;
3921 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3922 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3923 ParseUInt32(Element, EltLoc))
3926 if (!Val->getType()->isStructTy() && !Val->getType()->isArrayTy())
3927 return Error(ValLoc, "getresult inst requires an aggregate operand");
3928 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3929 return Error(EltLoc, "invalid getresult index for value");
3930 Inst = ExtractValueInst::Create(Val, Element);
3934 /// ParseGetElementPtr
3935 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3936 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3937 Value *Ptr, *Val; LocTy Loc, EltLoc;
3939 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3941 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3943 if (!Ptr->getType()->isPointerTy())
3944 return Error(Loc, "base of getelementptr must be a pointer");
3946 SmallVector<Value*, 16> Indices;
3947 bool AteExtraComma = false;
3948 while (EatIfPresent(lltok::comma)) {
3949 if (Lex.getKind() == lltok::MetadataVar) {
3950 AteExtraComma = true;
3953 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3954 if (!Val->getType()->isIntegerTy())
3955 return Error(EltLoc, "getelementptr index must be an integer");
3956 Indices.push_back(Val);
3959 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3960 Indices.begin(), Indices.end()))
3961 return Error(Loc, "invalid getelementptr indices");
3962 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3964 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3965 return AteExtraComma ? InstExtraComma : InstNormal;
3968 /// ParseExtractValue
3969 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3970 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3971 Value *Val; LocTy Loc;
3972 SmallVector<unsigned, 4> Indices;
3974 if (ParseTypeAndValue(Val, Loc, PFS) ||
3975 ParseIndexList(Indices, AteExtraComma))
3978 if (!Val->getType()->isAggregateType())
3979 return Error(Loc, "extractvalue operand must be aggregate type");
3981 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3983 return Error(Loc, "invalid indices for extractvalue");
3984 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3985 return AteExtraComma ? InstExtraComma : InstNormal;
3988 /// ParseInsertValue
3989 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3990 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3991 Value *Val0, *Val1; LocTy Loc0, Loc1;
3992 SmallVector<unsigned, 4> Indices;
3994 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3995 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3996 ParseTypeAndValue(Val1, Loc1, PFS) ||
3997 ParseIndexList(Indices, AteExtraComma))
4000 if (!Val0->getType()->isAggregateType())
4001 return Error(Loc0, "insertvalue operand must be aggregate type");
4003 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
4005 return Error(Loc0, "invalid indices for insertvalue");
4006 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
4007 return AteExtraComma ? InstExtraComma : InstNormal;
4010 //===----------------------------------------------------------------------===//
4011 // Embedded metadata.
4012 //===----------------------------------------------------------------------===//
4014 /// ParseMDNodeVector
4015 /// ::= Element (',' Element)*
4017 /// ::= 'null' | TypeAndValue
4018 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4019 PerFunctionState *PFS) {
4020 // Check for an empty list.
4021 if (Lex.getKind() == lltok::rbrace)
4025 // Null is a special case since it is typeless.
4026 if (EatIfPresent(lltok::kw_null)) {
4032 PATypeHolder Ty(Type::getVoidTy(Context));
4034 if (ParseType(Ty) || ParseValID(ID, PFS) ||
4035 ConvertValIDToValue(Ty, ID, V, PFS))
4039 } while (EatIfPresent(lltok::comma));