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) {
1122 if (Lex.getKind() != lltok::MetadataVar)
1123 return TokError("expected metadata after comma");
1125 std::string Name = Lex.getStrVal();
1130 SMLoc Loc = Lex.getLoc();
1131 if (ParseToken(lltok::exclaim, "expected '!' here") ||
1132 ParseMDNodeID(Node, NodeID))
1135 unsigned MDK = M->getMDKindID(Name.c_str());
1137 // If we got the node, add it to the instruction.
1138 Inst->setMetadata(MDK, Node);
1140 MDRef R = { Loc, MDK, NodeID };
1141 // Otherwise, remember that this should be resolved later.
1142 ForwardRefInstMetadata[Inst].push_back(R);
1145 // If this is the end of the list, we're done.
1146 } while (EatIfPresent(lltok::comma));
1150 /// ParseOptionalAlignment
1153 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1155 if (!EatIfPresent(lltok::kw_align))
1157 LocTy AlignLoc = Lex.getLoc();
1158 if (ParseUInt32(Alignment)) return true;
1159 if (!isPowerOf2_32(Alignment))
1160 return Error(AlignLoc, "alignment is not a power of two");
1161 if (Alignment > Value::MaximumAlignment)
1162 return Error(AlignLoc, "huge alignments are not supported yet");
1166 /// ParseOptionalCommaAlign
1170 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1172 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1173 bool &AteExtraComma) {
1174 AteExtraComma = false;
1175 while (EatIfPresent(lltok::comma)) {
1176 // Metadata at the end is an early exit.
1177 if (Lex.getKind() == lltok::MetadataVar) {
1178 AteExtraComma = true;
1182 if (Lex.getKind() != lltok::kw_align)
1183 return Error(Lex.getLoc(), "expected metadata or 'align'");
1185 LocTy AlignLoc = Lex.getLoc();
1186 if (ParseOptionalAlignment(Alignment)) return true;
1192 /// ParseOptionalStackAlignment
1194 /// ::= 'alignstack' '(' 4 ')'
1195 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1197 if (!EatIfPresent(lltok::kw_alignstack))
1199 LocTy ParenLoc = Lex.getLoc();
1200 if (!EatIfPresent(lltok::lparen))
1201 return Error(ParenLoc, "expected '('");
1202 LocTy AlignLoc = Lex.getLoc();
1203 if (ParseUInt32(Alignment)) return true;
1204 ParenLoc = Lex.getLoc();
1205 if (!EatIfPresent(lltok::rparen))
1206 return Error(ParenLoc, "expected ')'");
1207 if (!isPowerOf2_32(Alignment))
1208 return Error(AlignLoc, "stack alignment is not a power of two");
1212 /// ParseIndexList - This parses the index list for an insert/extractvalue
1213 /// instruction. This sets AteExtraComma in the case where we eat an extra
1214 /// comma at the end of the line and find that it is followed by metadata.
1215 /// Clients that don't allow metadata can call the version of this function that
1216 /// only takes one argument.
1219 /// ::= (',' uint32)+
1221 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1222 bool &AteExtraComma) {
1223 AteExtraComma = false;
1225 if (Lex.getKind() != lltok::comma)
1226 return TokError("expected ',' as start of index list");
1228 while (EatIfPresent(lltok::comma)) {
1229 if (Lex.getKind() == lltok::MetadataVar) {
1230 AteExtraComma = true;
1234 if (ParseUInt32(Idx)) return true;
1235 Indices.push_back(Idx);
1241 //===----------------------------------------------------------------------===//
1243 //===----------------------------------------------------------------------===//
1245 /// ParseType - Parse and resolve a full type.
1246 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1247 LocTy TypeLoc = Lex.getLoc();
1248 if (ParseTypeRec(Result)) return true;
1250 // Verify no unresolved uprefs.
1251 if (!UpRefs.empty())
1252 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1254 if (!AllowVoid && Result.get()->isVoidTy())
1255 return Error(TypeLoc, "void type only allowed for function results");
1260 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1261 /// called. It loops through the UpRefs vector, which is a list of the
1262 /// currently active types. For each type, if the up-reference is contained in
1263 /// the newly completed type, we decrement the level count. When the level
1264 /// count reaches zero, the up-referenced type is the type that is passed in:
1265 /// thus we can complete the cycle.
1267 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1268 // If Ty isn't abstract, or if there are no up-references in it, then there is
1269 // nothing to resolve here.
1270 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1272 PATypeHolder Ty(ty);
1274 dbgs() << "Type '" << Ty->getDescription()
1275 << "' newly formed. Resolving upreferences.\n"
1276 << UpRefs.size() << " upreferences active!\n";
1279 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1280 // to zero), we resolve them all together before we resolve them to Ty. At
1281 // the end of the loop, if there is anything to resolve to Ty, it will be in
1283 OpaqueType *TypeToResolve = 0;
1285 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1286 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1288 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1289 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1292 dbgs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1293 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1294 << (ContainsType ? "true" : "false")
1295 << " level=" << UpRefs[i].NestingLevel << "\n";
1300 // Decrement level of upreference
1301 unsigned Level = --UpRefs[i].NestingLevel;
1302 UpRefs[i].LastContainedTy = Ty;
1304 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1309 dbgs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1312 TypeToResolve = UpRefs[i].UpRefTy;
1314 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1315 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1316 --i; // Do not skip the next element.
1320 TypeToResolve->refineAbstractTypeTo(Ty);
1326 /// ParseTypeRec - The recursive function used to process the internal
1327 /// implementation details of types.
1328 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1329 switch (Lex.getKind()) {
1331 return TokError("expected type");
1333 // TypeRec ::= 'float' | 'void' (etc)
1334 Result = Lex.getTyVal();
1337 case lltok::kw_opaque:
1338 // TypeRec ::= 'opaque'
1339 Result = OpaqueType::get(Context);
1343 // TypeRec ::= '{' ... '}'
1344 if (ParseStructType(Result, false))
1347 case lltok::kw_union:
1348 // TypeRec ::= 'union' '{' ... '}'
1349 if (ParseUnionType(Result))
1352 case lltok::lsquare:
1353 // TypeRec ::= '[' ... ']'
1354 Lex.Lex(); // eat the lsquare.
1355 if (ParseArrayVectorType(Result, false))
1358 case lltok::less: // Either vector or packed struct.
1359 // TypeRec ::= '<' ... '>'
1361 if (Lex.getKind() == lltok::lbrace) {
1362 if (ParseStructType(Result, true) ||
1363 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1365 } else if (ParseArrayVectorType(Result, true))
1368 case lltok::LocalVar:
1369 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1371 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1374 Result = OpaqueType::get(Context);
1375 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1376 std::make_pair(Result,
1378 M->addTypeName(Lex.getStrVal(), Result.get());
1383 case lltok::LocalVarID:
1385 if (Lex.getUIntVal() < NumberedTypes.size())
1386 Result = NumberedTypes[Lex.getUIntVal()];
1388 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1389 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1390 if (I != ForwardRefTypeIDs.end())
1391 Result = I->second.first;
1393 Result = OpaqueType::get(Context);
1394 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1395 std::make_pair(Result,
1401 case lltok::backslash: {
1402 // TypeRec ::= '\' 4
1405 if (ParseUInt32(Val)) return true;
1406 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1407 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1413 // Parse the type suffixes.
1415 switch (Lex.getKind()) {
1417 default: return false;
1419 // TypeRec ::= TypeRec '*'
1421 if (Result.get()->isLabelTy())
1422 return TokError("basic block pointers are invalid");
1423 if (Result.get()->isVoidTy())
1424 return TokError("pointers to void are invalid; use i8* instead");
1425 if (!PointerType::isValidElementType(Result.get()))
1426 return TokError("pointer to this type is invalid");
1427 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1431 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1432 case lltok::kw_addrspace: {
1433 if (Result.get()->isLabelTy())
1434 return TokError("basic block pointers are invalid");
1435 if (Result.get()->isVoidTy())
1436 return TokError("pointers to void are invalid; use i8* instead");
1437 if (!PointerType::isValidElementType(Result.get()))
1438 return TokError("pointer to this type is invalid");
1440 if (ParseOptionalAddrSpace(AddrSpace) ||
1441 ParseToken(lltok::star, "expected '*' in address space"))
1444 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1448 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1450 if (ParseFunctionType(Result))
1457 /// ParseParameterList
1459 /// ::= '(' Arg (',' Arg)* ')'
1461 /// ::= Type OptionalAttributes Value OptionalAttributes
1462 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1463 PerFunctionState &PFS) {
1464 if (ParseToken(lltok::lparen, "expected '(' in call"))
1467 while (Lex.getKind() != lltok::rparen) {
1468 // If this isn't the first argument, we need a comma.
1469 if (!ArgList.empty() &&
1470 ParseToken(lltok::comma, "expected ',' in argument list"))
1473 // Parse the argument.
1475 PATypeHolder ArgTy(Type::getVoidTy(Context));
1476 unsigned ArgAttrs1 = Attribute::None;
1477 unsigned ArgAttrs2 = Attribute::None;
1479 if (ParseType(ArgTy, ArgLoc))
1482 // Otherwise, handle normal operands.
1483 if (ParseOptionalAttrs(ArgAttrs1, 0) ||
1484 ParseValue(ArgTy, V, PFS) ||
1485 // FIXME: Should not allow attributes after the argument, remove this
1487 ParseOptionalAttrs(ArgAttrs2, 3))
1489 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1492 Lex.Lex(); // Lex the ')'.
1498 /// ParseArgumentList - Parse the argument list for a function type or function
1499 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1500 /// ::= '(' ArgTypeListI ')'
1504 /// ::= ArgTypeList ',' '...'
1505 /// ::= ArgType (',' ArgType)*
1507 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1508 bool &isVarArg, bool inType) {
1510 assert(Lex.getKind() == lltok::lparen);
1511 Lex.Lex(); // eat the (.
1513 if (Lex.getKind() == lltok::rparen) {
1515 } else if (Lex.getKind() == lltok::dotdotdot) {
1519 LocTy TypeLoc = Lex.getLoc();
1520 PATypeHolder ArgTy(Type::getVoidTy(Context));
1524 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1525 // types (such as a function returning a pointer to itself). If parsing a
1526 // function prototype, we require fully resolved types.
1527 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1528 ParseOptionalAttrs(Attrs, 0)) return true;
1530 if (ArgTy->isVoidTy())
1531 return Error(TypeLoc, "argument can not have void type");
1533 if (Lex.getKind() == lltok::LocalVar ||
1534 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1535 Name = Lex.getStrVal();
1539 if (!FunctionType::isValidArgumentType(ArgTy))
1540 return Error(TypeLoc, "invalid type for function argument");
1542 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1544 while (EatIfPresent(lltok::comma)) {
1545 // Handle ... at end of arg list.
1546 if (EatIfPresent(lltok::dotdotdot)) {
1551 // Otherwise must be an argument type.
1552 TypeLoc = Lex.getLoc();
1553 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1554 ParseOptionalAttrs(Attrs, 0)) return true;
1556 if (ArgTy->isVoidTy())
1557 return Error(TypeLoc, "argument can not have void type");
1559 if (Lex.getKind() == lltok::LocalVar ||
1560 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1561 Name = Lex.getStrVal();
1567 if (!ArgTy->isFirstClassType() && !ArgTy->isOpaqueTy())
1568 return Error(TypeLoc, "invalid type for function argument");
1570 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1574 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1577 /// ParseFunctionType
1578 /// ::= Type ArgumentList OptionalAttrs
1579 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1580 assert(Lex.getKind() == lltok::lparen);
1582 if (!FunctionType::isValidReturnType(Result))
1583 return TokError("invalid function return type");
1585 std::vector<ArgInfo> ArgList;
1588 if (ParseArgumentList(ArgList, isVarArg, true) ||
1589 // FIXME: Allow, but ignore attributes on function types!
1590 // FIXME: Remove in LLVM 3.0
1591 ParseOptionalAttrs(Attrs, 2))
1594 // Reject names on the arguments lists.
1595 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1596 if (!ArgList[i].Name.empty())
1597 return Error(ArgList[i].Loc, "argument name invalid in function type");
1598 if (!ArgList[i].Attrs != 0) {
1599 // Allow but ignore attributes on function types; this permits
1601 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1605 std::vector<const Type*> ArgListTy;
1606 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1607 ArgListTy.push_back(ArgList[i].Type);
1609 Result = HandleUpRefs(FunctionType::get(Result.get(),
1610 ArgListTy, isVarArg));
1614 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1617 /// ::= '{' TypeRec (',' TypeRec)* '}'
1618 /// ::= '<' '{' '}' '>'
1619 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1620 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1621 assert(Lex.getKind() == lltok::lbrace);
1622 Lex.Lex(); // Consume the '{'
1624 if (EatIfPresent(lltok::rbrace)) {
1625 Result = StructType::get(Context, Packed);
1629 std::vector<PATypeHolder> ParamsList;
1630 LocTy EltTyLoc = Lex.getLoc();
1631 if (ParseTypeRec(Result)) return true;
1632 ParamsList.push_back(Result);
1634 if (Result->isVoidTy())
1635 return Error(EltTyLoc, "struct element can not have void type");
1636 if (!StructType::isValidElementType(Result))
1637 return Error(EltTyLoc, "invalid element type for struct");
1639 while (EatIfPresent(lltok::comma)) {
1640 EltTyLoc = Lex.getLoc();
1641 if (ParseTypeRec(Result)) return true;
1643 if (Result->isVoidTy())
1644 return Error(EltTyLoc, "struct element can not have void type");
1645 if (!StructType::isValidElementType(Result))
1646 return Error(EltTyLoc, "invalid element type for struct");
1648 ParamsList.push_back(Result);
1651 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1654 std::vector<const Type*> ParamsListTy;
1655 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1656 ParamsListTy.push_back(ParamsList[i].get());
1657 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1663 /// ::= 'union' '{' TypeRec (',' TypeRec)* '}'
1664 bool LLParser::ParseUnionType(PATypeHolder &Result) {
1665 assert(Lex.getKind() == lltok::kw_union);
1666 Lex.Lex(); // Consume the 'union'
1668 if (ParseToken(lltok::lbrace, "'{' expected after 'union'")) return true;
1670 SmallVector<PATypeHolder, 8> ParamsList;
1672 LocTy EltTyLoc = Lex.getLoc();
1673 if (ParseTypeRec(Result)) return true;
1674 ParamsList.push_back(Result);
1676 if (Result->isVoidTy())
1677 return Error(EltTyLoc, "union element can not have void type");
1678 if (!UnionType::isValidElementType(Result))
1679 return Error(EltTyLoc, "invalid element type for union");
1681 } while (EatIfPresent(lltok::comma)) ;
1683 if (ParseToken(lltok::rbrace, "expected '}' at end of union"))
1686 SmallVector<const Type*, 8> ParamsListTy;
1687 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1688 ParamsListTy.push_back(ParamsList[i].get());
1689 Result = HandleUpRefs(UnionType::get(&ParamsListTy[0], ParamsListTy.size()));
1693 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1694 /// token has already been consumed.
1696 /// ::= '[' APSINTVAL 'x' Types ']'
1697 /// ::= '<' APSINTVAL 'x' Types '>'
1698 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1699 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1700 Lex.getAPSIntVal().getBitWidth() > 64)
1701 return TokError("expected number in address space");
1703 LocTy SizeLoc = Lex.getLoc();
1704 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1707 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1710 LocTy TypeLoc = Lex.getLoc();
1711 PATypeHolder EltTy(Type::getVoidTy(Context));
1712 if (ParseTypeRec(EltTy)) return true;
1714 if (EltTy->isVoidTy())
1715 return Error(TypeLoc, "array and vector element type cannot be void");
1717 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1718 "expected end of sequential type"))
1723 return Error(SizeLoc, "zero element vector is illegal");
1724 if ((unsigned)Size != Size)
1725 return Error(SizeLoc, "size too large for vector");
1726 if (!VectorType::isValidElementType(EltTy))
1727 return Error(TypeLoc, "vector element type must be fp or integer");
1728 Result = VectorType::get(EltTy, unsigned(Size));
1730 if (!ArrayType::isValidElementType(EltTy))
1731 return Error(TypeLoc, "invalid array element type");
1732 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1737 //===----------------------------------------------------------------------===//
1738 // Function Semantic Analysis.
1739 //===----------------------------------------------------------------------===//
1741 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1743 : P(p), F(f), FunctionNumber(functionNumber) {
1745 // Insert unnamed arguments into the NumberedVals list.
1746 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1749 NumberedVals.push_back(AI);
1752 LLParser::PerFunctionState::~PerFunctionState() {
1753 // If there were any forward referenced non-basicblock values, delete them.
1754 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1755 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1756 if (!isa<BasicBlock>(I->second.first)) {
1757 I->second.first->replaceAllUsesWith(
1758 UndefValue::get(I->second.first->getType()));
1759 delete I->second.first;
1760 I->second.first = 0;
1763 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1764 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1765 if (!isa<BasicBlock>(I->second.first)) {
1766 I->second.first->replaceAllUsesWith(
1767 UndefValue::get(I->second.first->getType()));
1768 delete I->second.first;
1769 I->second.first = 0;
1773 bool LLParser::PerFunctionState::FinishFunction() {
1774 // Check to see if someone took the address of labels in this block.
1775 if (!P.ForwardRefBlockAddresses.empty()) {
1777 if (!F.getName().empty()) {
1778 FunctionID.Kind = ValID::t_GlobalName;
1779 FunctionID.StrVal = F.getName();
1781 FunctionID.Kind = ValID::t_GlobalID;
1782 FunctionID.UIntVal = FunctionNumber;
1785 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1786 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1787 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1788 // Resolve all these references.
1789 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1792 P.ForwardRefBlockAddresses.erase(FRBAI);
1796 if (!ForwardRefVals.empty())
1797 return P.Error(ForwardRefVals.begin()->second.second,
1798 "use of undefined value '%" + ForwardRefVals.begin()->first +
1800 if (!ForwardRefValIDs.empty())
1801 return P.Error(ForwardRefValIDs.begin()->second.second,
1802 "use of undefined value '%" +
1803 utostr(ForwardRefValIDs.begin()->first) + "'");
1808 /// GetVal - Get a value with the specified name or ID, creating a
1809 /// forward reference record if needed. This can return null if the value
1810 /// exists but does not have the right type.
1811 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1812 const Type *Ty, LocTy Loc) {
1813 // Look this name up in the normal function symbol table.
1814 Value *Val = F.getValueSymbolTable().lookup(Name);
1816 // If this is a forward reference for the value, see if we already created a
1817 // forward ref record.
1819 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1820 I = ForwardRefVals.find(Name);
1821 if (I != ForwardRefVals.end())
1822 Val = I->second.first;
1825 // If we have the value in the symbol table or fwd-ref table, return it.
1827 if (Val->getType() == Ty) return Val;
1828 if (Ty->isLabelTy())
1829 P.Error(Loc, "'%" + Name + "' is not a basic block");
1831 P.Error(Loc, "'%" + Name + "' defined with type '" +
1832 Val->getType()->getDescription() + "'");
1836 // Don't make placeholders with invalid type.
1837 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1838 P.Error(Loc, "invalid use of a non-first-class type");
1842 // Otherwise, create a new forward reference for this value and remember it.
1844 if (Ty->isLabelTy())
1845 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1847 FwdVal = new Argument(Ty, Name);
1849 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1853 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1855 // Look this name up in the normal function symbol table.
1856 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1858 // If this is a forward reference for the value, see if we already created a
1859 // forward ref record.
1861 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1862 I = ForwardRefValIDs.find(ID);
1863 if (I != ForwardRefValIDs.end())
1864 Val = I->second.first;
1867 // If we have the value in the symbol table or fwd-ref table, return it.
1869 if (Val->getType() == Ty) return Val;
1870 if (Ty->isLabelTy())
1871 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1873 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1874 Val->getType()->getDescription() + "'");
1878 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1879 P.Error(Loc, "invalid use of a non-first-class type");
1883 // Otherwise, create a new forward reference for this value and remember it.
1885 if (Ty->isLabelTy())
1886 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1888 FwdVal = new Argument(Ty);
1890 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1894 /// SetInstName - After an instruction is parsed and inserted into its
1895 /// basic block, this installs its name.
1896 bool LLParser::PerFunctionState::SetInstName(int NameID,
1897 const std::string &NameStr,
1898 LocTy NameLoc, Instruction *Inst) {
1899 // If this instruction has void type, it cannot have a name or ID specified.
1900 if (Inst->getType()->isVoidTy()) {
1901 if (NameID != -1 || !NameStr.empty())
1902 return P.Error(NameLoc, "instructions returning void cannot have a name");
1906 // If this was a numbered instruction, verify that the instruction is the
1907 // expected value and resolve any forward references.
1908 if (NameStr.empty()) {
1909 // If neither a name nor an ID was specified, just use the next ID.
1911 NameID = NumberedVals.size();
1913 if (unsigned(NameID) != NumberedVals.size())
1914 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1915 utostr(NumberedVals.size()) + "'");
1917 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1918 ForwardRefValIDs.find(NameID);
1919 if (FI != ForwardRefValIDs.end()) {
1920 if (FI->second.first->getType() != Inst->getType())
1921 return P.Error(NameLoc, "instruction forward referenced with type '" +
1922 FI->second.first->getType()->getDescription() + "'");
1923 FI->second.first->replaceAllUsesWith(Inst);
1924 delete FI->second.first;
1925 ForwardRefValIDs.erase(FI);
1928 NumberedVals.push_back(Inst);
1932 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1933 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1934 FI = ForwardRefVals.find(NameStr);
1935 if (FI != ForwardRefVals.end()) {
1936 if (FI->second.first->getType() != Inst->getType())
1937 return P.Error(NameLoc, "instruction forward referenced with type '" +
1938 FI->second.first->getType()->getDescription() + "'");
1939 FI->second.first->replaceAllUsesWith(Inst);
1940 delete FI->second.first;
1941 ForwardRefVals.erase(FI);
1944 // Set the name on the instruction.
1945 Inst->setName(NameStr);
1947 if (Inst->getNameStr() != NameStr)
1948 return P.Error(NameLoc, "multiple definition of local value named '" +
1953 /// GetBB - Get a basic block with the specified name or ID, creating a
1954 /// forward reference record if needed.
1955 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1957 return cast_or_null<BasicBlock>(GetVal(Name,
1958 Type::getLabelTy(F.getContext()), Loc));
1961 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1962 return cast_or_null<BasicBlock>(GetVal(ID,
1963 Type::getLabelTy(F.getContext()), Loc));
1966 /// DefineBB - Define the specified basic block, which is either named or
1967 /// unnamed. If there is an error, this returns null otherwise it returns
1968 /// the block being defined.
1969 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1973 BB = GetBB(NumberedVals.size(), Loc);
1975 BB = GetBB(Name, Loc);
1976 if (BB == 0) return 0; // Already diagnosed error.
1978 // Move the block to the end of the function. Forward ref'd blocks are
1979 // inserted wherever they happen to be referenced.
1980 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1982 // Remove the block from forward ref sets.
1984 ForwardRefValIDs.erase(NumberedVals.size());
1985 NumberedVals.push_back(BB);
1987 // BB forward references are already in the function symbol table.
1988 ForwardRefVals.erase(Name);
1994 //===----------------------------------------------------------------------===//
1996 //===----------------------------------------------------------------------===//
1998 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1999 /// type implied. For example, if we parse "4" we don't know what integer type
2000 /// it has. The value will later be combined with its type and checked for
2001 /// sanity. PFS is used to convert function-local operands of metadata (since
2002 /// metadata operands are not just parsed here but also converted to values).
2003 /// PFS can be null when we are not parsing metadata values inside a function.
2004 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2005 ID.Loc = Lex.getLoc();
2006 switch (Lex.getKind()) {
2007 default: return TokError("expected value token");
2008 case lltok::GlobalID: // @42
2009 ID.UIntVal = Lex.getUIntVal();
2010 ID.Kind = ValID::t_GlobalID;
2012 case lltok::GlobalVar: // @foo
2013 ID.StrVal = Lex.getStrVal();
2014 ID.Kind = ValID::t_GlobalName;
2016 case lltok::LocalVarID: // %42
2017 ID.UIntVal = Lex.getUIntVal();
2018 ID.Kind = ValID::t_LocalID;
2020 case lltok::LocalVar: // %foo
2021 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
2022 ID.StrVal = Lex.getStrVal();
2023 ID.Kind = ValID::t_LocalName;
2025 case lltok::exclaim: // !42, !{...}, or !"foo"
2026 return ParseMetadataValue(ID, PFS);
2028 ID.APSIntVal = Lex.getAPSIntVal();
2029 ID.Kind = ValID::t_APSInt;
2031 case lltok::APFloat:
2032 ID.APFloatVal = Lex.getAPFloatVal();
2033 ID.Kind = ValID::t_APFloat;
2035 case lltok::kw_true:
2036 ID.ConstantVal = ConstantInt::getTrue(Context);
2037 ID.Kind = ValID::t_Constant;
2039 case lltok::kw_false:
2040 ID.ConstantVal = ConstantInt::getFalse(Context);
2041 ID.Kind = ValID::t_Constant;
2043 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2044 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2045 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2047 case lltok::lbrace: {
2048 // ValID ::= '{' ConstVector '}'
2050 SmallVector<Constant*, 16> Elts;
2051 if (ParseGlobalValueVector(Elts) ||
2052 ParseToken(lltok::rbrace, "expected end of struct constant"))
2055 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
2056 Elts.size(), false);
2057 ID.Kind = ValID::t_Constant;
2061 // ValID ::= '<' ConstVector '>' --> Vector.
2062 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2064 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2066 SmallVector<Constant*, 16> Elts;
2067 LocTy FirstEltLoc = Lex.getLoc();
2068 if (ParseGlobalValueVector(Elts) ||
2070 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2071 ParseToken(lltok::greater, "expected end of constant"))
2074 if (isPackedStruct) {
2076 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
2077 ID.Kind = ValID::t_Constant;
2082 return Error(ID.Loc, "constant vector must not be empty");
2084 if (!Elts[0]->getType()->isIntegerTy() &&
2085 !Elts[0]->getType()->isFloatingPointTy())
2086 return Error(FirstEltLoc,
2087 "vector elements must have integer or floating point type");
2089 // Verify that all the vector elements have the same type.
2090 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2091 if (Elts[i]->getType() != Elts[0]->getType())
2092 return Error(FirstEltLoc,
2093 "vector element #" + utostr(i) +
2094 " is not of type '" + Elts[0]->getType()->getDescription());
2096 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
2097 ID.Kind = ValID::t_Constant;
2100 case lltok::lsquare: { // Array Constant
2102 SmallVector<Constant*, 16> Elts;
2103 LocTy FirstEltLoc = Lex.getLoc();
2104 if (ParseGlobalValueVector(Elts) ||
2105 ParseToken(lltok::rsquare, "expected end of array constant"))
2108 // Handle empty element.
2110 // Use undef instead of an array because it's inconvenient to determine
2111 // the element type at this point, there being no elements to examine.
2112 ID.Kind = ValID::t_EmptyArray;
2116 if (!Elts[0]->getType()->isFirstClassType())
2117 return Error(FirstEltLoc, "invalid array element type: " +
2118 Elts[0]->getType()->getDescription());
2120 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2122 // Verify all elements are correct type!
2123 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2124 if (Elts[i]->getType() != Elts[0]->getType())
2125 return Error(FirstEltLoc,
2126 "array element #" + utostr(i) +
2127 " is not of type '" +Elts[0]->getType()->getDescription());
2130 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
2131 ID.Kind = ValID::t_Constant;
2134 case lltok::kw_c: // c "foo"
2136 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
2137 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2138 ID.Kind = ValID::t_Constant;
2141 case lltok::kw_asm: {
2142 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2143 bool HasSideEffect, AlignStack;
2145 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2146 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2147 ParseStringConstant(ID.StrVal) ||
2148 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2149 ParseToken(lltok::StringConstant, "expected constraint string"))
2151 ID.StrVal2 = Lex.getStrVal();
2152 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2153 ID.Kind = ValID::t_InlineAsm;
2157 case lltok::kw_blockaddress: {
2158 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2162 LocTy FnLoc, LabelLoc;
2164 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2166 ParseToken(lltok::comma, "expected comma in block address expression")||
2167 ParseValID(Label) ||
2168 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2171 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2172 return Error(Fn.Loc, "expected function name in blockaddress");
2173 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2174 return Error(Label.Loc, "expected basic block name in blockaddress");
2176 // Make a global variable as a placeholder for this reference.
2177 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2178 false, GlobalValue::InternalLinkage,
2180 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2181 ID.ConstantVal = FwdRef;
2182 ID.Kind = ValID::t_Constant;
2186 case lltok::kw_trunc:
2187 case lltok::kw_zext:
2188 case lltok::kw_sext:
2189 case lltok::kw_fptrunc:
2190 case lltok::kw_fpext:
2191 case lltok::kw_bitcast:
2192 case lltok::kw_uitofp:
2193 case lltok::kw_sitofp:
2194 case lltok::kw_fptoui:
2195 case lltok::kw_fptosi:
2196 case lltok::kw_inttoptr:
2197 case lltok::kw_ptrtoint: {
2198 unsigned Opc = Lex.getUIntVal();
2199 PATypeHolder DestTy(Type::getVoidTy(Context));
2202 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2203 ParseGlobalTypeAndValue(SrcVal) ||
2204 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2205 ParseType(DestTy) ||
2206 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2208 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2209 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2210 SrcVal->getType()->getDescription() + "' to '" +
2211 DestTy->getDescription() + "'");
2212 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2214 ID.Kind = ValID::t_Constant;
2217 case lltok::kw_extractvalue: {
2220 SmallVector<unsigned, 4> Indices;
2221 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2222 ParseGlobalTypeAndValue(Val) ||
2223 ParseIndexList(Indices) ||
2224 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2227 if (!Val->getType()->isAggregateType())
2228 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2229 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
2231 return Error(ID.Loc, "invalid indices for extractvalue");
2233 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
2234 ID.Kind = ValID::t_Constant;
2237 case lltok::kw_insertvalue: {
2239 Constant *Val0, *Val1;
2240 SmallVector<unsigned, 4> Indices;
2241 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2242 ParseGlobalTypeAndValue(Val0) ||
2243 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2244 ParseGlobalTypeAndValue(Val1) ||
2245 ParseIndexList(Indices) ||
2246 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2248 if (!Val0->getType()->isAggregateType())
2249 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2250 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
2252 return Error(ID.Loc, "invalid indices for insertvalue");
2253 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
2254 Indices.data(), Indices.size());
2255 ID.Kind = ValID::t_Constant;
2258 case lltok::kw_icmp:
2259 case lltok::kw_fcmp: {
2260 unsigned PredVal, Opc = Lex.getUIntVal();
2261 Constant *Val0, *Val1;
2263 if (ParseCmpPredicate(PredVal, Opc) ||
2264 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2265 ParseGlobalTypeAndValue(Val0) ||
2266 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2267 ParseGlobalTypeAndValue(Val1) ||
2268 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2271 if (Val0->getType() != Val1->getType())
2272 return Error(ID.Loc, "compare operands must have the same type");
2274 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2276 if (Opc == Instruction::FCmp) {
2277 if (!Val0->getType()->isFPOrFPVectorTy())
2278 return Error(ID.Loc, "fcmp requires floating point operands");
2279 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2281 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2282 if (!Val0->getType()->isIntOrIntVectorTy() &&
2283 !Val0->getType()->isPointerTy())
2284 return Error(ID.Loc, "icmp requires pointer or integer operands");
2285 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2287 ID.Kind = ValID::t_Constant;
2291 // Binary Operators.
2293 case lltok::kw_fadd:
2295 case lltok::kw_fsub:
2297 case lltok::kw_fmul:
2298 case lltok::kw_udiv:
2299 case lltok::kw_sdiv:
2300 case lltok::kw_fdiv:
2301 case lltok::kw_urem:
2302 case lltok::kw_srem:
2303 case lltok::kw_frem: {
2307 unsigned Opc = Lex.getUIntVal();
2308 Constant *Val0, *Val1;
2310 LocTy ModifierLoc = Lex.getLoc();
2311 if (Opc == Instruction::Add ||
2312 Opc == Instruction::Sub ||
2313 Opc == Instruction::Mul) {
2314 if (EatIfPresent(lltok::kw_nuw))
2316 if (EatIfPresent(lltok::kw_nsw)) {
2318 if (EatIfPresent(lltok::kw_nuw))
2321 } else if (Opc == Instruction::SDiv) {
2322 if (EatIfPresent(lltok::kw_exact))
2325 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2326 ParseGlobalTypeAndValue(Val0) ||
2327 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2328 ParseGlobalTypeAndValue(Val1) ||
2329 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2331 if (Val0->getType() != Val1->getType())
2332 return Error(ID.Loc, "operands of constexpr must have same type");
2333 if (!Val0->getType()->isIntOrIntVectorTy()) {
2335 return Error(ModifierLoc, "nuw only applies to integer operations");
2337 return Error(ModifierLoc, "nsw only applies to integer operations");
2339 // Check that the type is valid for the operator.
2341 case Instruction::Add:
2342 case Instruction::Sub:
2343 case Instruction::Mul:
2344 case Instruction::UDiv:
2345 case Instruction::SDiv:
2346 case Instruction::URem:
2347 case Instruction::SRem:
2348 if (!Val0->getType()->isIntOrIntVectorTy())
2349 return Error(ID.Loc, "constexpr requires integer operands");
2351 case Instruction::FAdd:
2352 case Instruction::FSub:
2353 case Instruction::FMul:
2354 case Instruction::FDiv:
2355 case Instruction::FRem:
2356 if (!Val0->getType()->isFPOrFPVectorTy())
2357 return Error(ID.Loc, "constexpr requires fp operands");
2359 default: llvm_unreachable("Unknown binary operator!");
2362 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2363 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2364 if (Exact) Flags |= SDivOperator::IsExact;
2365 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2367 ID.Kind = ValID::t_Constant;
2371 // Logical Operations
2373 case lltok::kw_lshr:
2374 case lltok::kw_ashr:
2377 case lltok::kw_xor: {
2378 unsigned Opc = Lex.getUIntVal();
2379 Constant *Val0, *Val1;
2381 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2382 ParseGlobalTypeAndValue(Val0) ||
2383 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2384 ParseGlobalTypeAndValue(Val1) ||
2385 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2387 if (Val0->getType() != Val1->getType())
2388 return Error(ID.Loc, "operands of constexpr must have same type");
2389 if (!Val0->getType()->isIntOrIntVectorTy())
2390 return Error(ID.Loc,
2391 "constexpr requires integer or integer vector operands");
2392 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2393 ID.Kind = ValID::t_Constant;
2397 case lltok::kw_getelementptr:
2398 case lltok::kw_shufflevector:
2399 case lltok::kw_insertelement:
2400 case lltok::kw_extractelement:
2401 case lltok::kw_select: {
2402 unsigned Opc = Lex.getUIntVal();
2403 SmallVector<Constant*, 16> Elts;
2404 bool InBounds = false;
2406 if (Opc == Instruction::GetElementPtr)
2407 InBounds = EatIfPresent(lltok::kw_inbounds);
2408 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2409 ParseGlobalValueVector(Elts) ||
2410 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2413 if (Opc == Instruction::GetElementPtr) {
2414 if (Elts.size() == 0 || !Elts[0]->getType()->isPointerTy())
2415 return Error(ID.Loc, "getelementptr requires pointer operand");
2417 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2418 (Value**)(Elts.data() + 1),
2420 return Error(ID.Loc, "invalid indices for getelementptr");
2421 ID.ConstantVal = InBounds ?
2422 ConstantExpr::getInBoundsGetElementPtr(Elts[0],
2425 ConstantExpr::getGetElementPtr(Elts[0],
2426 Elts.data() + 1, Elts.size() - 1);
2427 } else if (Opc == Instruction::Select) {
2428 if (Elts.size() != 3)
2429 return Error(ID.Loc, "expected three operands to select");
2430 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2432 return Error(ID.Loc, Reason);
2433 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2434 } else if (Opc == Instruction::ShuffleVector) {
2435 if (Elts.size() != 3)
2436 return Error(ID.Loc, "expected three operands to shufflevector");
2437 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2438 return Error(ID.Loc, "invalid operands to shufflevector");
2440 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2441 } else if (Opc == Instruction::ExtractElement) {
2442 if (Elts.size() != 2)
2443 return Error(ID.Loc, "expected two operands to extractelement");
2444 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2445 return Error(ID.Loc, "invalid extractelement operands");
2446 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2448 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2449 if (Elts.size() != 3)
2450 return Error(ID.Loc, "expected three operands to insertelement");
2451 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2452 return Error(ID.Loc, "invalid insertelement operands");
2454 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2457 ID.Kind = ValID::t_Constant;
2466 /// ParseGlobalValue - Parse a global value with the specified type.
2467 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&C) {
2471 bool Parsed = ParseValID(ID) ||
2472 ConvertValIDToValue(Ty, ID, V, NULL);
2473 if (V && !(C = dyn_cast<Constant>(V)))
2474 return Error(ID.Loc, "global values must be constants");
2478 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2479 PATypeHolder Type(Type::getVoidTy(Context));
2480 return ParseType(Type) ||
2481 ParseGlobalValue(Type, V);
2484 /// ParseGlobalValueVector
2486 /// ::= TypeAndValue (',' TypeAndValue)*
2487 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2489 if (Lex.getKind() == lltok::rbrace ||
2490 Lex.getKind() == lltok::rsquare ||
2491 Lex.getKind() == lltok::greater ||
2492 Lex.getKind() == lltok::rparen)
2496 if (ParseGlobalTypeAndValue(C)) return true;
2499 while (EatIfPresent(lltok::comma)) {
2500 if (ParseGlobalTypeAndValue(C)) return true;
2507 /// ParseMetadataValue
2511 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2512 assert(Lex.getKind() == lltok::exclaim);
2517 if (EatIfPresent(lltok::lbrace)) {
2518 SmallVector<Value*, 16> Elts;
2519 if (ParseMDNodeVector(Elts, PFS) ||
2520 ParseToken(lltok::rbrace, "expected end of metadata node"))
2523 ID.MDNodeVal = MDNode::get(Context, Elts.data(), Elts.size());
2524 ID.Kind = ValID::t_MDNode;
2528 // Standalone metadata reference
2530 if (Lex.getKind() == lltok::APSInt) {
2531 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2532 ID.Kind = ValID::t_MDNode;
2537 // ::= '!' STRINGCONSTANT
2538 if (ParseMDString(ID.MDStringVal)) return true;
2539 ID.Kind = ValID::t_MDString;
2544 //===----------------------------------------------------------------------===//
2545 // Function Parsing.
2546 //===----------------------------------------------------------------------===//
2548 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2549 PerFunctionState *PFS) {
2550 if (Ty->isFunctionTy())
2551 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2554 default: llvm_unreachable("Unknown ValID!");
2555 case ValID::t_LocalID:
2556 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2557 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2559 case ValID::t_LocalName:
2560 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2561 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2563 case ValID::t_InlineAsm: {
2564 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2565 const FunctionType *FTy =
2566 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2567 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2568 return Error(ID.Loc, "invalid type for inline asm constraint string");
2569 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2572 case ValID::t_MDNode:
2573 if (!Ty->isMetadataTy())
2574 return Error(ID.Loc, "metadata value must have metadata type");
2577 case ValID::t_MDString:
2578 if (!Ty->isMetadataTy())
2579 return Error(ID.Loc, "metadata value must have metadata type");
2582 case ValID::t_GlobalName:
2583 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2585 case ValID::t_GlobalID:
2586 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2588 case ValID::t_APSInt:
2589 if (!Ty->isIntegerTy())
2590 return Error(ID.Loc, "integer constant must have integer type");
2591 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2592 V = ConstantInt::get(Context, ID.APSIntVal);
2594 case ValID::t_APFloat:
2595 if (!Ty->isFloatingPointTy() ||
2596 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2597 return Error(ID.Loc, "floating point constant invalid for type");
2599 // The lexer has no type info, so builds all float and double FP constants
2600 // as double. Fix this here. Long double does not need this.
2601 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2604 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2607 V = ConstantFP::get(Context, ID.APFloatVal);
2609 if (V->getType() != Ty)
2610 return Error(ID.Loc, "floating point constant does not have type '" +
2611 Ty->getDescription() + "'");
2615 if (!Ty->isPointerTy())
2616 return Error(ID.Loc, "null must be a pointer type");
2617 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2619 case ValID::t_Undef:
2620 // FIXME: LabelTy should not be a first-class type.
2621 if ((!Ty->isFirstClassType() || Ty->isLabelTy()) &&
2623 return Error(ID.Loc, "invalid type for undef constant");
2624 V = UndefValue::get(Ty);
2626 case ValID::t_EmptyArray:
2627 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2628 return Error(ID.Loc, "invalid empty array initializer");
2629 V = UndefValue::get(Ty);
2632 // FIXME: LabelTy should not be a first-class type.
2633 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2634 return Error(ID.Loc, "invalid type for null constant");
2635 V = Constant::getNullValue(Ty);
2637 case ValID::t_Constant:
2638 if (ID.ConstantVal->getType() != Ty) {
2639 // Allow a constant struct with a single member to be converted
2640 // to a union, if the union has a member which is the same type
2641 // as the struct member.
2642 if (const UnionType* utype = dyn_cast<UnionType>(Ty)) {
2643 return ParseUnionValue(utype, ID, V);
2646 return Error(ID.Loc, "constant expression type mismatch");
2654 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2657 return ParseValID(ID, &PFS) ||
2658 ConvertValIDToValue(Ty, ID, V, &PFS);
2661 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2662 PATypeHolder T(Type::getVoidTy(Context));
2663 return ParseType(T) ||
2664 ParseValue(T, V, PFS);
2667 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2668 PerFunctionState &PFS) {
2671 if (ParseTypeAndValue(V, PFS)) return true;
2672 if (!isa<BasicBlock>(V))
2673 return Error(Loc, "expected a basic block");
2674 BB = cast<BasicBlock>(V);
2678 bool LLParser::ParseUnionValue(const UnionType* utype, ValID &ID, Value *&V) {
2679 if (const StructType* stype = dyn_cast<StructType>(ID.ConstantVal->getType())) {
2680 if (stype->getNumContainedTypes() != 1)
2681 return Error(ID.Loc, "constant expression type mismatch");
2682 int index = utype->getElementTypeIndex(stype->getContainedType(0));
2684 return Error(ID.Loc, "initializer type is not a member of the union");
2686 V = ConstantUnion::get(
2687 utype, cast<Constant>(ID.ConstantVal->getOperand(0)));
2691 return Error(ID.Loc, "constant expression type mismatch");
2696 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2697 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2698 /// OptionalAlign OptGC
2699 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2700 // Parse the linkage.
2701 LocTy LinkageLoc = Lex.getLoc();
2704 unsigned Visibility, RetAttrs;
2706 PATypeHolder RetType(Type::getVoidTy(Context));
2707 LocTy RetTypeLoc = Lex.getLoc();
2708 if (ParseOptionalLinkage(Linkage) ||
2709 ParseOptionalVisibility(Visibility) ||
2710 ParseOptionalCallingConv(CC) ||
2711 ParseOptionalAttrs(RetAttrs, 1) ||
2712 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2715 // Verify that the linkage is ok.
2716 switch ((GlobalValue::LinkageTypes)Linkage) {
2717 case GlobalValue::ExternalLinkage:
2718 break; // always ok.
2719 case GlobalValue::DLLImportLinkage:
2720 case GlobalValue::ExternalWeakLinkage:
2722 return Error(LinkageLoc, "invalid linkage for function definition");
2724 case GlobalValue::PrivateLinkage:
2725 case GlobalValue::LinkerPrivateLinkage:
2726 case GlobalValue::LinkerPrivateWeakLinkage:
2727 case GlobalValue::LinkerPrivateWeakDefAutoLinkage:
2728 case GlobalValue::InternalLinkage:
2729 case GlobalValue::AvailableExternallyLinkage:
2730 case GlobalValue::LinkOnceAnyLinkage:
2731 case GlobalValue::LinkOnceODRLinkage:
2732 case GlobalValue::WeakAnyLinkage:
2733 case GlobalValue::WeakODRLinkage:
2734 case GlobalValue::DLLExportLinkage:
2736 return Error(LinkageLoc, "invalid linkage for function declaration");
2738 case GlobalValue::AppendingLinkage:
2739 case GlobalValue::CommonLinkage:
2740 return Error(LinkageLoc, "invalid function linkage type");
2743 if (!FunctionType::isValidReturnType(RetType) ||
2744 RetType->isOpaqueTy())
2745 return Error(RetTypeLoc, "invalid function return type");
2747 LocTy NameLoc = Lex.getLoc();
2749 std::string FunctionName;
2750 if (Lex.getKind() == lltok::GlobalVar) {
2751 FunctionName = Lex.getStrVal();
2752 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2753 unsigned NameID = Lex.getUIntVal();
2755 if (NameID != NumberedVals.size())
2756 return TokError("function expected to be numbered '%" +
2757 utostr(NumberedVals.size()) + "'");
2759 return TokError("expected function name");
2764 if (Lex.getKind() != lltok::lparen)
2765 return TokError("expected '(' in function argument list");
2767 std::vector<ArgInfo> ArgList;
2770 std::string Section;
2774 if (ParseArgumentList(ArgList, isVarArg, false) ||
2775 ParseOptionalAttrs(FuncAttrs, 2) ||
2776 (EatIfPresent(lltok::kw_section) &&
2777 ParseStringConstant(Section)) ||
2778 ParseOptionalAlignment(Alignment) ||
2779 (EatIfPresent(lltok::kw_gc) &&
2780 ParseStringConstant(GC)))
2783 // If the alignment was parsed as an attribute, move to the alignment field.
2784 if (FuncAttrs & Attribute::Alignment) {
2785 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2786 FuncAttrs &= ~Attribute::Alignment;
2789 // Okay, if we got here, the function is syntactically valid. Convert types
2790 // and do semantic checks.
2791 std::vector<const Type*> ParamTypeList;
2792 SmallVector<AttributeWithIndex, 8> Attrs;
2793 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2795 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2796 if (FuncAttrs & ObsoleteFuncAttrs) {
2797 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2798 FuncAttrs &= ~ObsoleteFuncAttrs;
2801 if (RetAttrs != Attribute::None)
2802 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2804 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2805 ParamTypeList.push_back(ArgList[i].Type);
2806 if (ArgList[i].Attrs != Attribute::None)
2807 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2810 if (FuncAttrs != Attribute::None)
2811 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2813 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2815 if (PAL.paramHasAttr(1, Attribute::StructRet) && !RetType->isVoidTy())
2816 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2818 const FunctionType *FT =
2819 FunctionType::get(RetType, ParamTypeList, isVarArg);
2820 const PointerType *PFT = PointerType::getUnqual(FT);
2823 if (!FunctionName.empty()) {
2824 // If this was a definition of a forward reference, remove the definition
2825 // from the forward reference table and fill in the forward ref.
2826 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2827 ForwardRefVals.find(FunctionName);
2828 if (FRVI != ForwardRefVals.end()) {
2829 Fn = M->getFunction(FunctionName);
2830 if (Fn->getType() != PFT)
2831 return Error(FRVI->second.second, "invalid forward reference to "
2832 "function '" + FunctionName + "' with wrong type!");
2834 ForwardRefVals.erase(FRVI);
2835 } else if ((Fn = M->getFunction(FunctionName))) {
2836 // If this function already exists in the symbol table, then it is
2837 // multiply defined. We accept a few cases for old backwards compat.
2838 // FIXME: Remove this stuff for LLVM 3.0.
2839 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2840 (!Fn->isDeclaration() && isDefine)) {
2841 // If the redefinition has different type or different attributes,
2842 // reject it. If both have bodies, reject it.
2843 return Error(NameLoc, "invalid redefinition of function '" +
2844 FunctionName + "'");
2845 } else if (Fn->isDeclaration()) {
2846 // Make sure to strip off any argument names so we can't get conflicts.
2847 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2851 } else if (M->getNamedValue(FunctionName)) {
2852 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2856 // If this is a definition of a forward referenced function, make sure the
2858 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2859 = ForwardRefValIDs.find(NumberedVals.size());
2860 if (I != ForwardRefValIDs.end()) {
2861 Fn = cast<Function>(I->second.first);
2862 if (Fn->getType() != PFT)
2863 return Error(NameLoc, "type of definition and forward reference of '@" +
2864 utostr(NumberedVals.size()) +"' disagree");
2865 ForwardRefValIDs.erase(I);
2870 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2871 else // Move the forward-reference to the correct spot in the module.
2872 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2874 if (FunctionName.empty())
2875 NumberedVals.push_back(Fn);
2877 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2878 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2879 Fn->setCallingConv(CC);
2880 Fn->setAttributes(PAL);
2881 Fn->setAlignment(Alignment);
2882 Fn->setSection(Section);
2883 if (!GC.empty()) Fn->setGC(GC.c_str());
2885 // Add all of the arguments we parsed to the function.
2886 Function::arg_iterator ArgIt = Fn->arg_begin();
2887 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2888 // If we run out of arguments in the Function prototype, exit early.
2889 // FIXME: REMOVE THIS IN LLVM 3.0, this is just for the mismatch case above.
2890 if (ArgIt == Fn->arg_end()) break;
2892 // If the argument has a name, insert it into the argument symbol table.
2893 if (ArgList[i].Name.empty()) continue;
2895 // Set the name, if it conflicted, it will be auto-renamed.
2896 ArgIt->setName(ArgList[i].Name);
2898 if (ArgIt->getNameStr() != ArgList[i].Name)
2899 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2900 ArgList[i].Name + "'");
2907 /// ParseFunctionBody
2908 /// ::= '{' BasicBlock+ '}'
2909 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2911 bool LLParser::ParseFunctionBody(Function &Fn) {
2912 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2913 return TokError("expected '{' in function body");
2914 Lex.Lex(); // eat the {.
2916 int FunctionNumber = -1;
2917 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2919 PerFunctionState PFS(*this, Fn, FunctionNumber);
2921 // We need at least one basic block.
2922 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_end)
2923 return TokError("function body requires at least one basic block");
2925 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2926 if (ParseBasicBlock(PFS)) return true;
2931 // Verify function is ok.
2932 return PFS.FinishFunction();
2936 /// ::= LabelStr? Instruction*
2937 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2938 // If this basic block starts out with a name, remember it.
2940 LocTy NameLoc = Lex.getLoc();
2941 if (Lex.getKind() == lltok::LabelStr) {
2942 Name = Lex.getStrVal();
2946 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2947 if (BB == 0) return true;
2949 std::string NameStr;
2951 // Parse the instructions in this block until we get a terminator.
2953 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2955 // This instruction may have three possibilities for a name: a) none
2956 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2957 LocTy NameLoc = Lex.getLoc();
2961 if (Lex.getKind() == lltok::LocalVarID) {
2962 NameID = Lex.getUIntVal();
2964 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2966 } else if (Lex.getKind() == lltok::LocalVar ||
2967 // FIXME: REMOVE IN LLVM 3.0
2968 Lex.getKind() == lltok::StringConstant) {
2969 NameStr = Lex.getStrVal();
2971 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2975 switch (ParseInstruction(Inst, BB, PFS)) {
2976 default: assert(0 && "Unknown ParseInstruction result!");
2977 case InstError: return true;
2979 BB->getInstList().push_back(Inst);
2981 // With a normal result, we check to see if the instruction is followed by
2982 // a comma and metadata.
2983 if (EatIfPresent(lltok::comma))
2984 if (ParseInstructionMetadata(Inst))
2987 case InstExtraComma:
2988 BB->getInstList().push_back(Inst);
2990 // If the instruction parser ate an extra comma at the end of it, it
2991 // *must* be followed by metadata.
2992 if (ParseInstructionMetadata(Inst))
2997 // Set the name on the instruction.
2998 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2999 } while (!isa<TerminatorInst>(Inst));
3004 //===----------------------------------------------------------------------===//
3005 // Instruction Parsing.
3006 //===----------------------------------------------------------------------===//
3008 /// ParseInstruction - Parse one of the many different instructions.
3010 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3011 PerFunctionState &PFS) {
3012 lltok::Kind Token = Lex.getKind();
3013 if (Token == lltok::Eof)
3014 return TokError("found end of file when expecting more instructions");
3015 LocTy Loc = Lex.getLoc();
3016 unsigned KeywordVal = Lex.getUIntVal();
3017 Lex.Lex(); // Eat the keyword.
3020 default: return Error(Loc, "expected instruction opcode");
3021 // Terminator Instructions.
3022 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
3023 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3024 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3025 case lltok::kw_br: return ParseBr(Inst, PFS);
3026 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3027 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3028 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3029 // Binary Operators.
3032 case lltok::kw_mul: {
3035 LocTy ModifierLoc = Lex.getLoc();
3036 if (EatIfPresent(lltok::kw_nuw))
3038 if (EatIfPresent(lltok::kw_nsw)) {
3040 if (EatIfPresent(lltok::kw_nuw))
3043 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3045 if (!Inst->getType()->isIntOrIntVectorTy()) {
3047 return Error(ModifierLoc, "nuw only applies to integer operations");
3049 return Error(ModifierLoc, "nsw only applies to integer operations");
3052 cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3054 cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3058 case lltok::kw_fadd:
3059 case lltok::kw_fsub:
3060 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3062 case lltok::kw_sdiv: {
3064 if (EatIfPresent(lltok::kw_exact))
3066 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3069 cast<BinaryOperator>(Inst)->setIsExact(true);
3073 case lltok::kw_udiv:
3074 case lltok::kw_urem:
3075 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3076 case lltok::kw_fdiv:
3077 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3079 case lltok::kw_lshr:
3080 case lltok::kw_ashr:
3083 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3084 case lltok::kw_icmp:
3085 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3087 case lltok::kw_trunc:
3088 case lltok::kw_zext:
3089 case lltok::kw_sext:
3090 case lltok::kw_fptrunc:
3091 case lltok::kw_fpext:
3092 case lltok::kw_bitcast:
3093 case lltok::kw_uitofp:
3094 case lltok::kw_sitofp:
3095 case lltok::kw_fptoui:
3096 case lltok::kw_fptosi:
3097 case lltok::kw_inttoptr:
3098 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3100 case lltok::kw_select: return ParseSelect(Inst, PFS);
3101 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3102 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3103 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3104 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3105 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3106 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3107 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3109 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3110 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, BB, false);
3111 case lltok::kw_free: return ParseFree(Inst, PFS, BB);
3112 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
3113 case lltok::kw_store: return ParseStore(Inst, PFS, false);
3114 case lltok::kw_volatile:
3115 if (EatIfPresent(lltok::kw_load))
3116 return ParseLoad(Inst, PFS, true);
3117 else if (EatIfPresent(lltok::kw_store))
3118 return ParseStore(Inst, PFS, true);
3120 return TokError("expected 'load' or 'store'");
3121 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
3122 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3123 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3124 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3128 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3129 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3130 if (Opc == Instruction::FCmp) {
3131 switch (Lex.getKind()) {
3132 default: TokError("expected fcmp predicate (e.g. 'oeq')");
3133 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3134 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3135 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3136 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3137 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3138 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3139 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3140 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3141 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3142 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3143 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3144 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3145 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3146 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3147 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3148 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3151 switch (Lex.getKind()) {
3152 default: TokError("expected icmp predicate (e.g. 'eq')");
3153 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3154 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3155 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3156 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3157 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3158 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3159 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3160 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3161 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3162 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3169 //===----------------------------------------------------------------------===//
3170 // Terminator Instructions.
3171 //===----------------------------------------------------------------------===//
3173 /// ParseRet - Parse a return instruction.
3174 /// ::= 'ret' void (',' !dbg, !1)*
3175 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3176 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ (',' !dbg, !1)*
3177 /// [[obsolete: LLVM 3.0]]
3178 int LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3179 PerFunctionState &PFS) {
3180 PATypeHolder Ty(Type::getVoidTy(Context));
3181 if (ParseType(Ty, true /*void allowed*/)) return true;
3183 if (Ty->isVoidTy()) {
3184 Inst = ReturnInst::Create(Context);
3189 if (ParseValue(Ty, RV, PFS)) return true;
3191 bool ExtraComma = false;
3192 if (EatIfPresent(lltok::comma)) {
3193 // Parse optional custom metadata, e.g. !dbg
3194 if (Lex.getKind() == lltok::MetadataVar) {
3197 // The normal case is one return value.
3198 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring
3199 // use of 'ret {i32,i32} {i32 1, i32 2}'
3200 SmallVector<Value*, 8> RVs;
3204 // If optional custom metadata, e.g. !dbg is seen then this is the
3206 if (Lex.getKind() == lltok::MetadataVar)
3208 if (ParseTypeAndValue(RV, PFS)) return true;
3210 } while (EatIfPresent(lltok::comma));
3212 RV = UndefValue::get(PFS.getFunction().getReturnType());
3213 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
3214 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
3215 BB->getInstList().push_back(I);
3221 Inst = ReturnInst::Create(Context, RV);
3222 return ExtraComma ? InstExtraComma : InstNormal;
3227 /// ::= 'br' TypeAndValue
3228 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3229 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3232 BasicBlock *Op1, *Op2;
3233 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3235 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3236 Inst = BranchInst::Create(BB);
3240 if (Op0->getType() != Type::getInt1Ty(Context))
3241 return Error(Loc, "branch condition must have 'i1' type");
3243 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3244 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3245 ParseToken(lltok::comma, "expected ',' after true destination") ||
3246 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3249 Inst = BranchInst::Create(Op1, Op2, Op0);
3255 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3257 /// ::= (TypeAndValue ',' TypeAndValue)*
3258 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3259 LocTy CondLoc, BBLoc;
3261 BasicBlock *DefaultBB;
3262 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3263 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3264 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3265 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3268 if (!Cond->getType()->isIntegerTy())
3269 return Error(CondLoc, "switch condition must have integer type");
3271 // Parse the jump table pairs.
3272 SmallPtrSet<Value*, 32> SeenCases;
3273 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3274 while (Lex.getKind() != lltok::rsquare) {
3278 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3279 ParseToken(lltok::comma, "expected ',' after case value") ||
3280 ParseTypeAndBasicBlock(DestBB, PFS))
3283 if (!SeenCases.insert(Constant))
3284 return Error(CondLoc, "duplicate case value in switch");
3285 if (!isa<ConstantInt>(Constant))
3286 return Error(CondLoc, "case value is not a constant integer");
3288 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3291 Lex.Lex(); // Eat the ']'.
3293 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3294 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3295 SI->addCase(Table[i].first, Table[i].second);
3302 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3303 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3306 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3307 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3308 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3311 if (!Address->getType()->isPointerTy())
3312 return Error(AddrLoc, "indirectbr address must have pointer type");
3314 // Parse the destination list.
3315 SmallVector<BasicBlock*, 16> DestList;
3317 if (Lex.getKind() != lltok::rsquare) {
3319 if (ParseTypeAndBasicBlock(DestBB, PFS))
3321 DestList.push_back(DestBB);
3323 while (EatIfPresent(lltok::comma)) {
3324 if (ParseTypeAndBasicBlock(DestBB, PFS))
3326 DestList.push_back(DestBB);
3330 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3333 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3334 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3335 IBI->addDestination(DestList[i]);
3342 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3343 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3344 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3345 LocTy CallLoc = Lex.getLoc();
3346 unsigned RetAttrs, FnAttrs;
3348 PATypeHolder RetType(Type::getVoidTy(Context));
3351 SmallVector<ParamInfo, 16> ArgList;
3353 BasicBlock *NormalBB, *UnwindBB;
3354 if (ParseOptionalCallingConv(CC) ||
3355 ParseOptionalAttrs(RetAttrs, 1) ||
3356 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3357 ParseValID(CalleeID) ||
3358 ParseParameterList(ArgList, PFS) ||
3359 ParseOptionalAttrs(FnAttrs, 2) ||
3360 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3361 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3362 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3363 ParseTypeAndBasicBlock(UnwindBB, PFS))
3366 // If RetType is a non-function pointer type, then this is the short syntax
3367 // for the call, which means that RetType is just the return type. Infer the
3368 // rest of the function argument types from the arguments that are present.
3369 const PointerType *PFTy = 0;
3370 const FunctionType *Ty = 0;
3371 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3372 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3373 // Pull out the types of all of the arguments...
3374 std::vector<const Type*> ParamTypes;
3375 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3376 ParamTypes.push_back(ArgList[i].V->getType());
3378 if (!FunctionType::isValidReturnType(RetType))
3379 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3381 Ty = FunctionType::get(RetType, ParamTypes, false);
3382 PFTy = PointerType::getUnqual(Ty);
3385 // Look up the callee.
3387 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3389 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3390 // function attributes.
3391 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3392 if (FnAttrs & ObsoleteFuncAttrs) {
3393 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3394 FnAttrs &= ~ObsoleteFuncAttrs;
3397 // Set up the Attributes for the function.
3398 SmallVector<AttributeWithIndex, 8> Attrs;
3399 if (RetAttrs != Attribute::None)
3400 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3402 SmallVector<Value*, 8> Args;
3404 // Loop through FunctionType's arguments and ensure they are specified
3405 // correctly. Also, gather any parameter attributes.
3406 FunctionType::param_iterator I = Ty->param_begin();
3407 FunctionType::param_iterator E = Ty->param_end();
3408 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3409 const Type *ExpectedTy = 0;
3412 } else if (!Ty->isVarArg()) {
3413 return Error(ArgList[i].Loc, "too many arguments specified");
3416 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3417 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3418 ExpectedTy->getDescription() + "'");
3419 Args.push_back(ArgList[i].V);
3420 if (ArgList[i].Attrs != Attribute::None)
3421 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3425 return Error(CallLoc, "not enough parameters specified for call");
3427 if (FnAttrs != Attribute::None)
3428 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3430 // Finish off the Attributes and check them
3431 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3433 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB,
3434 Args.begin(), Args.end());
3435 II->setCallingConv(CC);
3436 II->setAttributes(PAL);
3443 //===----------------------------------------------------------------------===//
3444 // Binary Operators.
3445 //===----------------------------------------------------------------------===//
3448 /// ::= ArithmeticOps TypeAndValue ',' Value
3450 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3451 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3452 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3453 unsigned Opc, unsigned OperandType) {
3454 LocTy Loc; Value *LHS, *RHS;
3455 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3456 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3457 ParseValue(LHS->getType(), RHS, PFS))
3461 switch (OperandType) {
3462 default: llvm_unreachable("Unknown operand type!");
3463 case 0: // int or FP.
3464 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3465 LHS->getType()->isFPOrFPVectorTy();
3467 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3468 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3472 return Error(Loc, "invalid operand type for instruction");
3474 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3479 /// ::= ArithmeticOps TypeAndValue ',' Value {
3480 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3482 LocTy Loc; Value *LHS, *RHS;
3483 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3484 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3485 ParseValue(LHS->getType(), RHS, PFS))
3488 if (!LHS->getType()->isIntOrIntVectorTy())
3489 return Error(Loc,"instruction requires integer or integer vector operands");
3491 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3497 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3498 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3499 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3501 // Parse the integer/fp comparison predicate.
3505 if (ParseCmpPredicate(Pred, Opc) ||
3506 ParseTypeAndValue(LHS, Loc, PFS) ||
3507 ParseToken(lltok::comma, "expected ',' after compare value") ||
3508 ParseValue(LHS->getType(), RHS, PFS))
3511 if (Opc == Instruction::FCmp) {
3512 if (!LHS->getType()->isFPOrFPVectorTy())
3513 return Error(Loc, "fcmp requires floating point operands");
3514 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3516 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3517 if (!LHS->getType()->isIntOrIntVectorTy() &&
3518 !LHS->getType()->isPointerTy())
3519 return Error(Loc, "icmp requires integer operands");
3520 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3525 //===----------------------------------------------------------------------===//
3526 // Other Instructions.
3527 //===----------------------------------------------------------------------===//
3531 /// ::= CastOpc TypeAndValue 'to' Type
3532 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3534 LocTy Loc; Value *Op;
3535 PATypeHolder DestTy(Type::getVoidTy(Context));
3536 if (ParseTypeAndValue(Op, Loc, PFS) ||
3537 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3541 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3542 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3543 return Error(Loc, "invalid cast opcode for cast from '" +
3544 Op->getType()->getDescription() + "' to '" +
3545 DestTy->getDescription() + "'");
3547 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3552 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3553 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3555 Value *Op0, *Op1, *Op2;
3556 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3557 ParseToken(lltok::comma, "expected ',' after select condition") ||
3558 ParseTypeAndValue(Op1, PFS) ||
3559 ParseToken(lltok::comma, "expected ',' after select value") ||
3560 ParseTypeAndValue(Op2, PFS))
3563 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3564 return Error(Loc, Reason);
3566 Inst = SelectInst::Create(Op0, Op1, Op2);
3571 /// ::= 'va_arg' TypeAndValue ',' Type
3572 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3574 PATypeHolder EltTy(Type::getVoidTy(Context));
3576 if (ParseTypeAndValue(Op, PFS) ||
3577 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3578 ParseType(EltTy, TypeLoc))
3581 if (!EltTy->isFirstClassType())
3582 return Error(TypeLoc, "va_arg requires operand with first class type");
3584 Inst = new VAArgInst(Op, EltTy);
3588 /// ParseExtractElement
3589 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3590 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3593 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3594 ParseToken(lltok::comma, "expected ',' after extract value") ||
3595 ParseTypeAndValue(Op1, PFS))
3598 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3599 return Error(Loc, "invalid extractelement operands");
3601 Inst = ExtractElementInst::Create(Op0, Op1);
3605 /// ParseInsertElement
3606 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3607 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3609 Value *Op0, *Op1, *Op2;
3610 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3611 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3612 ParseTypeAndValue(Op1, PFS) ||
3613 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3614 ParseTypeAndValue(Op2, PFS))
3617 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3618 return Error(Loc, "invalid insertelement operands");
3620 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3624 /// ParseShuffleVector
3625 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3626 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3628 Value *Op0, *Op1, *Op2;
3629 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3630 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3631 ParseTypeAndValue(Op1, PFS) ||
3632 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3633 ParseTypeAndValue(Op2, PFS))
3636 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3637 return Error(Loc, "invalid extractelement operands");
3639 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3644 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3645 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3646 PATypeHolder Ty(Type::getVoidTy(Context));
3648 LocTy TypeLoc = Lex.getLoc();
3650 if (ParseType(Ty) ||
3651 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3652 ParseValue(Ty, Op0, PFS) ||
3653 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3654 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3655 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3658 bool AteExtraComma = false;
3659 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3661 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3663 if (!EatIfPresent(lltok::comma))
3666 if (Lex.getKind() == lltok::MetadataVar) {
3667 AteExtraComma = true;
3671 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3672 ParseValue(Ty, Op0, PFS) ||
3673 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3674 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3675 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3679 if (!Ty->isFirstClassType())
3680 return Error(TypeLoc, "phi node must have first class type");
3682 PHINode *PN = PHINode::Create(Ty);
3683 PN->reserveOperandSpace(PHIVals.size());
3684 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3685 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3687 return AteExtraComma ? InstExtraComma : InstNormal;
3691 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3692 /// ParameterList OptionalAttrs
3693 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3695 unsigned RetAttrs, FnAttrs;
3697 PATypeHolder RetType(Type::getVoidTy(Context));
3700 SmallVector<ParamInfo, 16> ArgList;
3701 LocTy CallLoc = Lex.getLoc();
3703 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3704 ParseOptionalCallingConv(CC) ||
3705 ParseOptionalAttrs(RetAttrs, 1) ||
3706 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3707 ParseValID(CalleeID) ||
3708 ParseParameterList(ArgList, PFS) ||
3709 ParseOptionalAttrs(FnAttrs, 2))
3712 // If RetType is a non-function pointer type, then this is the short syntax
3713 // for the call, which means that RetType is just the return type. Infer the
3714 // rest of the function argument types from the arguments that are present.
3715 const PointerType *PFTy = 0;
3716 const FunctionType *Ty = 0;
3717 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3718 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3719 // Pull out the types of all of the arguments...
3720 std::vector<const Type*> ParamTypes;
3721 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3722 ParamTypes.push_back(ArgList[i].V->getType());
3724 if (!FunctionType::isValidReturnType(RetType))
3725 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3727 Ty = FunctionType::get(RetType, ParamTypes, false);
3728 PFTy = PointerType::getUnqual(Ty);
3731 // Look up the callee.
3733 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3735 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3736 // function attributes.
3737 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3738 if (FnAttrs & ObsoleteFuncAttrs) {
3739 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3740 FnAttrs &= ~ObsoleteFuncAttrs;
3743 // Set up the Attributes for the function.
3744 SmallVector<AttributeWithIndex, 8> Attrs;
3745 if (RetAttrs != Attribute::None)
3746 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3748 SmallVector<Value*, 8> Args;
3750 // Loop through FunctionType's arguments and ensure they are specified
3751 // correctly. Also, gather any parameter attributes.
3752 FunctionType::param_iterator I = Ty->param_begin();
3753 FunctionType::param_iterator E = Ty->param_end();
3754 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3755 const Type *ExpectedTy = 0;
3758 } else if (!Ty->isVarArg()) {
3759 return Error(ArgList[i].Loc, "too many arguments specified");
3762 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3763 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3764 ExpectedTy->getDescription() + "'");
3765 Args.push_back(ArgList[i].V);
3766 if (ArgList[i].Attrs != Attribute::None)
3767 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3771 return Error(CallLoc, "not enough parameters specified for call");
3773 if (FnAttrs != Attribute::None)
3774 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3776 // Finish off the Attributes and check them
3777 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3779 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3780 CI->setTailCall(isTail);
3781 CI->setCallingConv(CC);
3782 CI->setAttributes(PAL);
3787 //===----------------------------------------------------------------------===//
3788 // Memory Instructions.
3789 //===----------------------------------------------------------------------===//
3792 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalInfo)?
3793 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3794 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3795 BasicBlock* BB, bool isAlloca) {
3796 PATypeHolder Ty(Type::getVoidTy(Context));
3799 unsigned Alignment = 0;
3800 if (ParseType(Ty)) return true;
3802 bool AteExtraComma = false;
3803 if (EatIfPresent(lltok::comma)) {
3804 if (Lex.getKind() == lltok::kw_align) {
3805 if (ParseOptionalAlignment(Alignment)) return true;
3806 } else if (Lex.getKind() == lltok::MetadataVar) {
3807 AteExtraComma = true;
3809 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3810 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3815 if (Size && !Size->getType()->isIntegerTy())
3816 return Error(SizeLoc, "element count must have integer type");
3819 Inst = new AllocaInst(Ty, Size, Alignment);
3820 return AteExtraComma ? InstExtraComma : InstNormal;
3823 // Autoupgrade old malloc instruction to malloc call.
3824 // FIXME: Remove in LLVM 3.0.
3825 if (Size && !Size->getType()->isIntegerTy(32))
3826 return Error(SizeLoc, "element count must be i32");
3827 const Type *IntPtrTy = Type::getInt32Ty(Context);
3828 Constant *AllocSize = ConstantExpr::getSizeOf(Ty);
3829 AllocSize = ConstantExpr::getTruncOrBitCast(AllocSize, IntPtrTy);
3831 // Prototype malloc as "void *(int32)".
3832 // This function is renamed as "malloc" in ValidateEndOfModule().
3833 MallocF = cast<Function>(
3834 M->getOrInsertFunction("", Type::getInt8PtrTy(Context), IntPtrTy, NULL));
3835 Inst = CallInst::CreateMalloc(BB, IntPtrTy, Ty, AllocSize, Size, MallocF);
3836 return AteExtraComma ? InstExtraComma : InstNormal;
3840 /// ::= 'free' TypeAndValue
3841 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS,
3843 Value *Val; LocTy Loc;
3844 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3845 if (!Val->getType()->isPointerTy())
3846 return Error(Loc, "operand to free must be a pointer");
3847 Inst = CallInst::CreateFree(Val, BB);
3852 /// ::= 'volatile'? 'load' TypeAndValue (',' OptionalInfo)?
3853 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3855 Value *Val; LocTy Loc;
3856 unsigned Alignment = 0;
3857 bool AteExtraComma = false;
3858 if (ParseTypeAndValue(Val, Loc, PFS) ||
3859 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3862 if (!Val->getType()->isPointerTy() ||
3863 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3864 return Error(Loc, "load operand must be a pointer to a first class type");
3866 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3867 return AteExtraComma ? InstExtraComma : InstNormal;
3871 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3872 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3874 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3875 unsigned Alignment = 0;
3876 bool AteExtraComma = false;
3877 if (ParseTypeAndValue(Val, Loc, PFS) ||
3878 ParseToken(lltok::comma, "expected ',' after store operand") ||
3879 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3880 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3883 if (!Ptr->getType()->isPointerTy())
3884 return Error(PtrLoc, "store operand must be a pointer");
3885 if (!Val->getType()->isFirstClassType())
3886 return Error(Loc, "store operand must be a first class value");
3887 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3888 return Error(Loc, "stored value and pointer type do not match");
3890 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3891 return AteExtraComma ? InstExtraComma : InstNormal;
3895 /// ::= 'getresult' TypeAndValue ',' i32
3896 /// FIXME: Remove support for getresult in LLVM 3.0
3897 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3898 Value *Val; LocTy ValLoc, EltLoc;
3900 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3901 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3902 ParseUInt32(Element, EltLoc))
3905 if (!Val->getType()->isStructTy() && !Val->getType()->isArrayTy())
3906 return Error(ValLoc, "getresult inst requires an aggregate operand");
3907 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3908 return Error(EltLoc, "invalid getresult index for value");
3909 Inst = ExtractValueInst::Create(Val, Element);
3913 /// ParseGetElementPtr
3914 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3915 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3916 Value *Ptr, *Val; LocTy Loc, EltLoc;
3918 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3920 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3922 if (!Ptr->getType()->isPointerTy())
3923 return Error(Loc, "base of getelementptr must be a pointer");
3925 SmallVector<Value*, 16> Indices;
3926 bool AteExtraComma = false;
3927 while (EatIfPresent(lltok::comma)) {
3928 if (Lex.getKind() == lltok::MetadataVar) {
3929 AteExtraComma = true;
3932 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3933 if (!Val->getType()->isIntegerTy())
3934 return Error(EltLoc, "getelementptr index must be an integer");
3935 Indices.push_back(Val);
3938 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3939 Indices.begin(), Indices.end()))
3940 return Error(Loc, "invalid getelementptr indices");
3941 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3943 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3944 return AteExtraComma ? InstExtraComma : InstNormal;
3947 /// ParseExtractValue
3948 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3949 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3950 Value *Val; LocTy Loc;
3951 SmallVector<unsigned, 4> Indices;
3953 if (ParseTypeAndValue(Val, Loc, PFS) ||
3954 ParseIndexList(Indices, AteExtraComma))
3957 if (!Val->getType()->isAggregateType())
3958 return Error(Loc, "extractvalue operand must be aggregate type");
3960 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3962 return Error(Loc, "invalid indices for extractvalue");
3963 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3964 return AteExtraComma ? InstExtraComma : InstNormal;
3967 /// ParseInsertValue
3968 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3969 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3970 Value *Val0, *Val1; LocTy Loc0, Loc1;
3971 SmallVector<unsigned, 4> Indices;
3973 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3974 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3975 ParseTypeAndValue(Val1, Loc1, PFS) ||
3976 ParseIndexList(Indices, AteExtraComma))
3979 if (!Val0->getType()->isAggregateType())
3980 return Error(Loc0, "insertvalue operand must be aggregate type");
3982 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3984 return Error(Loc0, "invalid indices for insertvalue");
3985 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3986 return AteExtraComma ? InstExtraComma : InstNormal;
3989 //===----------------------------------------------------------------------===//
3990 // Embedded metadata.
3991 //===----------------------------------------------------------------------===//
3993 /// ParseMDNodeVector
3994 /// ::= Element (',' Element)*
3996 /// ::= 'null' | TypeAndValue
3997 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
3998 PerFunctionState *PFS) {
3999 // Check for an empty list.
4000 if (Lex.getKind() == lltok::rbrace)
4004 // Null is a special case since it is typeless.
4005 if (EatIfPresent(lltok::kw_null)) {
4011 PATypeHolder Ty(Type::getVoidTy(Context));
4013 if (ParseType(Ty) || ParseValID(ID, PFS) ||
4014 ConvertValIDToValue(Ty, ID, V, PFS))
4018 } while (EatIfPresent(lltok::comma));