1 //===-- LLParser.cpp - Parser Class ---------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the parser class for .ll files.
12 //===----------------------------------------------------------------------===//
15 #include "llvm/AutoUpgrade.h"
16 #include "llvm/CallingConv.h"
17 #include "llvm/Constants.h"
18 #include "llvm/DerivedTypes.h"
19 #include "llvm/InlineAsm.h"
20 #include "llvm/Instructions.h"
21 #include "llvm/Module.h"
22 #include "llvm/Operator.h"
23 #include "llvm/ValueSymbolTable.h"
24 #include "llvm/ADT/SmallPtrSet.h"
25 #include "llvm/ADT/StringExtras.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/Support/raw_ostream.h"
30 /// Run: module ::= toplevelentity*
31 bool LLParser::Run() {
35 return ParseTopLevelEntities() ||
36 ValidateEndOfModule();
39 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
41 bool LLParser::ValidateEndOfModule() {
42 // Handle any instruction metadata forward references.
43 if (!ForwardRefInstMetadata.empty()) {
44 for (DenseMap<Instruction*, std::vector<MDRef> >::iterator
45 I = ForwardRefInstMetadata.begin(), E = ForwardRefInstMetadata.end();
47 Instruction *Inst = I->first;
48 const std::vector<MDRef> &MDList = I->second;
50 for (unsigned i = 0, e = MDList.size(); i != e; ++i) {
51 unsigned SlotNo = MDList[i].MDSlot;
53 if (SlotNo >= NumberedMetadata.size() || NumberedMetadata[SlotNo] == 0)
54 return Error(MDList[i].Loc, "use of undefined metadata '!" +
55 utostr(SlotNo) + "'");
56 Inst->setMetadata(MDList[i].MDKind, NumberedMetadata[SlotNo]);
59 ForwardRefInstMetadata.clear();
63 // Update auto-upgraded malloc calls to "malloc".
64 // FIXME: Remove in LLVM 3.0.
66 MallocF->setName("malloc");
67 // If setName() does not set the name to "malloc", then there is already a
68 // declaration of "malloc". In that case, iterate over all calls to MallocF
69 // and get them to call the declared "malloc" instead.
70 if (MallocF->getName() != "malloc") {
71 Constant *RealMallocF = M->getFunction("malloc");
72 if (RealMallocF->getType() != MallocF->getType())
73 RealMallocF = ConstantExpr::getBitCast(RealMallocF, MallocF->getType());
74 MallocF->replaceAllUsesWith(RealMallocF);
75 MallocF->eraseFromParent();
81 // If there are entries in ForwardRefBlockAddresses at this point, they are
82 // references after the function was defined. Resolve those now.
83 while (!ForwardRefBlockAddresses.empty()) {
84 // Okay, we are referencing an already-parsed function, resolve them now.
86 const ValID &Fn = ForwardRefBlockAddresses.begin()->first;
87 if (Fn.Kind == ValID::t_GlobalName)
88 TheFn = M->getFunction(Fn.StrVal);
89 else if (Fn.UIntVal < NumberedVals.size())
90 TheFn = dyn_cast<Function>(NumberedVals[Fn.UIntVal]);
93 return Error(Fn.Loc, "unknown function referenced by blockaddress");
95 // Resolve all these references.
96 if (ResolveForwardRefBlockAddresses(TheFn,
97 ForwardRefBlockAddresses.begin()->second,
101 ForwardRefBlockAddresses.erase(ForwardRefBlockAddresses.begin());
105 if (!ForwardRefTypes.empty())
106 return Error(ForwardRefTypes.begin()->second.second,
107 "use of undefined type named '" +
108 ForwardRefTypes.begin()->first + "'");
109 if (!ForwardRefTypeIDs.empty())
110 return Error(ForwardRefTypeIDs.begin()->second.second,
111 "use of undefined type '%" +
112 utostr(ForwardRefTypeIDs.begin()->first) + "'");
114 if (!ForwardRefVals.empty())
115 return Error(ForwardRefVals.begin()->second.second,
116 "use of undefined value '@" + ForwardRefVals.begin()->first +
119 if (!ForwardRefValIDs.empty())
120 return Error(ForwardRefValIDs.begin()->second.second,
121 "use of undefined value '@" +
122 utostr(ForwardRefValIDs.begin()->first) + "'");
124 if (!ForwardRefMDNodes.empty())
125 return Error(ForwardRefMDNodes.begin()->second.second,
126 "use of undefined metadata '!" +
127 utostr(ForwardRefMDNodes.begin()->first) + "'");
130 // Look for intrinsic functions and CallInst that need to be upgraded
131 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
132 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
134 // Check debug info intrinsics.
135 CheckDebugInfoIntrinsics(M);
139 bool LLParser::ResolveForwardRefBlockAddresses(Function *TheFn,
140 std::vector<std::pair<ValID, GlobalValue*> > &Refs,
141 PerFunctionState *PFS) {
142 // Loop over all the references, resolving them.
143 for (unsigned i = 0, e = Refs.size(); i != e; ++i) {
146 if (Refs[i].first.Kind == ValID::t_LocalName)
147 Res = PFS->GetBB(Refs[i].first.StrVal, Refs[i].first.Loc);
149 Res = PFS->GetBB(Refs[i].first.UIntVal, Refs[i].first.Loc);
150 } else if (Refs[i].first.Kind == ValID::t_LocalID) {
151 return Error(Refs[i].first.Loc,
152 "cannot take address of numeric label after the function is defined");
154 Res = dyn_cast_or_null<BasicBlock>(
155 TheFn->getValueSymbolTable().lookup(Refs[i].first.StrVal));
159 return Error(Refs[i].first.Loc,
160 "referenced value is not a basic block");
162 // Get the BlockAddress for this and update references to use it.
163 BlockAddress *BA = BlockAddress::get(TheFn, Res);
164 Refs[i].second->replaceAllUsesWith(BA);
165 Refs[i].second->eraseFromParent();
171 //===----------------------------------------------------------------------===//
172 // Top-Level Entities
173 //===----------------------------------------------------------------------===//
175 bool LLParser::ParseTopLevelEntities() {
177 switch (Lex.getKind()) {
178 default: return TokError("expected top-level entity");
179 case lltok::Eof: return false;
180 //case lltok::kw_define:
181 case lltok::kw_declare: if (ParseDeclare()) return true; break;
182 case lltok::kw_define: if (ParseDefine()) return true; break;
183 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
184 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
185 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
186 case lltok::kw_type: if (ParseUnnamedType()) return true; break;
187 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
188 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
189 case lltok::LocalVar: if (ParseNamedType()) return true; break;
190 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
191 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
192 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
193 case lltok::MetadataVar: if (ParseNamedMetadata()) return true; break;
195 // The Global variable production with no name can have many different
196 // optional leading prefixes, the production is:
197 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
198 // OptionalAddrSpace ('constant'|'global') ...
199 case lltok::kw_private: // OptionalLinkage
200 case lltok::kw_linker_private: // OptionalLinkage
201 case lltok::kw_linker_private_weak: // OptionalLinkage
202 case lltok::kw_linker_private_weak_def_auto: // OptionalLinkage
203 case lltok::kw_internal: // OptionalLinkage
204 case lltok::kw_weak: // OptionalLinkage
205 case lltok::kw_weak_odr: // OptionalLinkage
206 case lltok::kw_linkonce: // OptionalLinkage
207 case lltok::kw_linkonce_odr: // OptionalLinkage
208 case lltok::kw_appending: // OptionalLinkage
209 case lltok::kw_dllexport: // OptionalLinkage
210 case lltok::kw_common: // OptionalLinkage
211 case lltok::kw_dllimport: // OptionalLinkage
212 case lltok::kw_extern_weak: // OptionalLinkage
213 case lltok::kw_external: { // OptionalLinkage
214 unsigned Linkage, Visibility;
215 if (ParseOptionalLinkage(Linkage) ||
216 ParseOptionalVisibility(Visibility) ||
217 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
221 case lltok::kw_default: // OptionalVisibility
222 case lltok::kw_hidden: // OptionalVisibility
223 case lltok::kw_protected: { // OptionalVisibility
225 if (ParseOptionalVisibility(Visibility) ||
226 ParseGlobal("", SMLoc(), 0, false, Visibility))
231 case lltok::kw_thread_local: // OptionalThreadLocal
232 case lltok::kw_addrspace: // OptionalAddrSpace
233 case lltok::kw_constant: // GlobalType
234 case lltok::kw_global: // GlobalType
235 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
243 /// ::= 'module' 'asm' STRINGCONSTANT
244 bool LLParser::ParseModuleAsm() {
245 assert(Lex.getKind() == lltok::kw_module);
249 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
250 ParseStringConstant(AsmStr)) return true;
252 const std::string &AsmSoFar = M->getModuleInlineAsm();
253 if (AsmSoFar.empty())
254 M->setModuleInlineAsm(AsmStr);
256 M->setModuleInlineAsm(AsmSoFar+"\n"+AsmStr);
261 /// ::= 'target' 'triple' '=' STRINGCONSTANT
262 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
263 bool LLParser::ParseTargetDefinition() {
264 assert(Lex.getKind() == lltok::kw_target);
267 default: return TokError("unknown target property");
268 case lltok::kw_triple:
270 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
271 ParseStringConstant(Str))
273 M->setTargetTriple(Str);
275 case lltok::kw_datalayout:
277 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
278 ParseStringConstant(Str))
280 M->setDataLayout(Str);
286 /// ::= 'deplibs' '=' '[' ']'
287 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
288 bool LLParser::ParseDepLibs() {
289 assert(Lex.getKind() == lltok::kw_deplibs);
291 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
292 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
295 if (EatIfPresent(lltok::rsquare))
299 if (ParseStringConstant(Str)) return true;
302 while (EatIfPresent(lltok::comma)) {
303 if (ParseStringConstant(Str)) return true;
307 return ParseToken(lltok::rsquare, "expected ']' at end of list");
310 /// ParseUnnamedType:
312 /// ::= LocalVarID '=' 'type' type
313 bool LLParser::ParseUnnamedType() {
314 unsigned TypeID = NumberedTypes.size();
316 // Handle the LocalVarID form.
317 if (Lex.getKind() == lltok::LocalVarID) {
318 if (Lex.getUIntVal() != TypeID)
319 return Error(Lex.getLoc(), "type expected to be numbered '%" +
320 utostr(TypeID) + "'");
321 Lex.Lex(); // eat LocalVarID;
323 if (ParseToken(lltok::equal, "expected '=' after name"))
327 LocTy TypeLoc = Lex.getLoc();
328 if (ParseToken(lltok::kw_type, "expected 'type' after '='")) return true;
330 PATypeHolder Ty(Type::getVoidTy(Context));
331 if (ParseType(Ty)) return true;
333 // See if this type was previously referenced.
334 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
335 FI = ForwardRefTypeIDs.find(TypeID);
336 if (FI != ForwardRefTypeIDs.end()) {
337 if (FI->second.first.get() == Ty)
338 return Error(TypeLoc, "self referential type is invalid");
340 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
341 Ty = FI->second.first.get();
342 ForwardRefTypeIDs.erase(FI);
345 NumberedTypes.push_back(Ty);
351 /// ::= LocalVar '=' 'type' type
352 bool LLParser::ParseNamedType() {
353 std::string Name = Lex.getStrVal();
354 LocTy NameLoc = Lex.getLoc();
355 Lex.Lex(); // eat LocalVar.
357 PATypeHolder Ty(Type::getVoidTy(Context));
359 if (ParseToken(lltok::equal, "expected '=' after name") ||
360 ParseToken(lltok::kw_type, "expected 'type' after name") ||
364 // Set the type name, checking for conflicts as we do so.
365 bool AlreadyExists = M->addTypeName(Name, Ty);
366 if (!AlreadyExists) return false;
368 // See if this type is a forward reference. We need to eagerly resolve
369 // types to allow recursive type redefinitions below.
370 std::map<std::string, std::pair<PATypeHolder, LocTy> >::iterator
371 FI = ForwardRefTypes.find(Name);
372 if (FI != ForwardRefTypes.end()) {
373 if (FI->second.first.get() == Ty)
374 return Error(NameLoc, "self referential type is invalid");
376 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
377 Ty = FI->second.first.get();
378 ForwardRefTypes.erase(FI);
381 // Inserting a name that is already defined, get the existing name.
382 const Type *Existing = M->getTypeByName(Name);
383 assert(Existing && "Conflict but no matching type?!");
385 // Otherwise, this is an attempt to redefine a type. That's okay if
386 // the redefinition is identical to the original.
387 // FIXME: REMOVE REDEFINITIONS IN LLVM 3.0
388 if (Existing == Ty) return false;
390 // Any other kind of (non-equivalent) redefinition is an error.
391 return Error(NameLoc, "redefinition of type named '" + Name + "' of type '" +
392 Ty->getDescription() + "'");
397 /// ::= 'declare' FunctionHeader
398 bool LLParser::ParseDeclare() {
399 assert(Lex.getKind() == lltok::kw_declare);
403 return ParseFunctionHeader(F, false);
407 /// ::= 'define' FunctionHeader '{' ...
408 bool LLParser::ParseDefine() {
409 assert(Lex.getKind() == lltok::kw_define);
413 return ParseFunctionHeader(F, true) ||
414 ParseFunctionBody(*F);
420 bool LLParser::ParseGlobalType(bool &IsConstant) {
421 if (Lex.getKind() == lltok::kw_constant)
423 else if (Lex.getKind() == lltok::kw_global)
427 return TokError("expected 'global' or 'constant'");
433 /// ParseUnnamedGlobal:
434 /// OptionalVisibility ALIAS ...
435 /// OptionalLinkage OptionalVisibility ... -> global variable
436 /// GlobalID '=' OptionalVisibility ALIAS ...
437 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
438 bool LLParser::ParseUnnamedGlobal() {
439 unsigned VarID = NumberedVals.size();
441 LocTy NameLoc = Lex.getLoc();
443 // Handle the GlobalID form.
444 if (Lex.getKind() == lltok::GlobalID) {
445 if (Lex.getUIntVal() != VarID)
446 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
447 utostr(VarID) + "'");
448 Lex.Lex(); // eat GlobalID;
450 if (ParseToken(lltok::equal, "expected '=' after name"))
455 unsigned Linkage, Visibility;
456 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
457 ParseOptionalVisibility(Visibility))
460 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
461 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
462 return ParseAlias(Name, NameLoc, Visibility);
465 /// ParseNamedGlobal:
466 /// GlobalVar '=' OptionalVisibility ALIAS ...
467 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
468 bool LLParser::ParseNamedGlobal() {
469 assert(Lex.getKind() == lltok::GlobalVar);
470 LocTy NameLoc = Lex.getLoc();
471 std::string Name = Lex.getStrVal();
475 unsigned Linkage, Visibility;
476 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
477 ParseOptionalLinkage(Linkage, HasLinkage) ||
478 ParseOptionalVisibility(Visibility))
481 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
482 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
483 return ParseAlias(Name, NameLoc, Visibility);
487 // ::= '!' STRINGCONSTANT
488 bool LLParser::ParseMDString(MDString *&Result) {
490 if (ParseStringConstant(Str)) return true;
491 Result = MDString::get(Context, Str);
496 // ::= '!' MDNodeNumber
498 /// This version of ParseMDNodeID returns the slot number and null in the case
499 /// of a forward reference.
500 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
501 // !{ ..., !42, ... }
502 if (ParseUInt32(SlotNo)) return true;
504 // Check existing MDNode.
505 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != 0)
506 Result = NumberedMetadata[SlotNo];
512 bool LLParser::ParseMDNodeID(MDNode *&Result) {
513 // !{ ..., !42, ... }
515 if (ParseMDNodeID(Result, MID)) return true;
517 // If not a forward reference, just return it now.
518 if (Result) return false;
520 // Otherwise, create MDNode forward reference.
521 MDNode *FwdNode = MDNode::getTemporary(Context, 0, 0);
522 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
524 if (NumberedMetadata.size() <= MID)
525 NumberedMetadata.resize(MID+1);
526 NumberedMetadata[MID] = FwdNode;
531 /// ParseNamedMetadata:
532 /// !foo = !{ !1, !2 }
533 bool LLParser::ParseNamedMetadata() {
534 assert(Lex.getKind() == lltok::MetadataVar);
535 std::string Name = Lex.getStrVal();
538 if (ParseToken(lltok::equal, "expected '=' here") ||
539 ParseToken(lltok::exclaim, "Expected '!' here") ||
540 ParseToken(lltok::lbrace, "Expected '{' here"))
543 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
544 if (Lex.getKind() != lltok::rbrace)
546 if (ParseToken(lltok::exclaim, "Expected '!' here"))
550 if (ParseMDNodeID(N)) return true;
552 } while (EatIfPresent(lltok::comma));
554 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
560 /// ParseStandaloneMetadata:
562 bool LLParser::ParseStandaloneMetadata() {
563 assert(Lex.getKind() == lltok::exclaim);
565 unsigned MetadataID = 0;
568 PATypeHolder Ty(Type::getVoidTy(Context));
569 SmallVector<Value *, 16> Elts;
570 if (ParseUInt32(MetadataID) ||
571 ParseToken(lltok::equal, "expected '=' here") ||
572 ParseType(Ty, TyLoc) ||
573 ParseToken(lltok::exclaim, "Expected '!' here") ||
574 ParseToken(lltok::lbrace, "Expected '{' here") ||
575 ParseMDNodeVector(Elts, NULL) ||
576 ParseToken(lltok::rbrace, "expected end of metadata node"))
579 MDNode *Init = MDNode::get(Context, Elts.data(), Elts.size());
581 // See if this was forward referenced, if so, handle it.
582 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
583 FI = ForwardRefMDNodes.find(MetadataID);
584 if (FI != ForwardRefMDNodes.end()) {
585 MDNode *Temp = FI->second.first;
586 Temp->replaceAllUsesWith(Init);
587 MDNode::deleteTemporary(Temp);
588 ForwardRefMDNodes.erase(FI);
590 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
592 if (MetadataID >= NumberedMetadata.size())
593 NumberedMetadata.resize(MetadataID+1);
595 if (NumberedMetadata[MetadataID] != 0)
596 return TokError("Metadata id is already used");
597 NumberedMetadata[MetadataID] = Init;
604 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
607 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
608 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
610 /// Everything through visibility has already been parsed.
612 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
613 unsigned Visibility) {
614 assert(Lex.getKind() == lltok::kw_alias);
617 LocTy LinkageLoc = Lex.getLoc();
618 if (ParseOptionalLinkage(Linkage))
621 if (Linkage != GlobalValue::ExternalLinkage &&
622 Linkage != GlobalValue::WeakAnyLinkage &&
623 Linkage != GlobalValue::WeakODRLinkage &&
624 Linkage != GlobalValue::InternalLinkage &&
625 Linkage != GlobalValue::PrivateLinkage &&
626 Linkage != GlobalValue::LinkerPrivateLinkage &&
627 Linkage != GlobalValue::LinkerPrivateWeakLinkage &&
628 Linkage != GlobalValue::LinkerPrivateWeakDefAutoLinkage)
629 return Error(LinkageLoc, "invalid linkage type for alias");
632 LocTy AliaseeLoc = Lex.getLoc();
633 if (Lex.getKind() != lltok::kw_bitcast &&
634 Lex.getKind() != lltok::kw_getelementptr) {
635 if (ParseGlobalTypeAndValue(Aliasee)) return true;
637 // The bitcast dest type is not present, it is implied by the dest type.
639 if (ParseValID(ID)) return true;
640 if (ID.Kind != ValID::t_Constant)
641 return Error(AliaseeLoc, "invalid aliasee");
642 Aliasee = ID.ConstantVal;
645 if (!Aliasee->getType()->isPointerTy())
646 return Error(AliaseeLoc, "alias must have pointer type");
648 // Okay, create the alias but do not insert it into the module yet.
649 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
650 (GlobalValue::LinkageTypes)Linkage, Name,
652 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
654 // See if this value already exists in the symbol table. If so, it is either
655 // a redefinition or a definition of a forward reference.
656 if (GlobalValue *Val = M->getNamedValue(Name)) {
657 // See if this was a redefinition. If so, there is no entry in
659 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
660 I = ForwardRefVals.find(Name);
661 if (I == ForwardRefVals.end())
662 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
664 // Otherwise, this was a definition of forward ref. Verify that types
666 if (Val->getType() != GA->getType())
667 return Error(NameLoc,
668 "forward reference and definition of alias have different types");
670 // If they agree, just RAUW the old value with the alias and remove the
672 Val->replaceAllUsesWith(GA);
673 Val->eraseFromParent();
674 ForwardRefVals.erase(I);
677 // Insert into the module, we know its name won't collide now.
678 M->getAliasList().push_back(GA);
679 assert(GA->getNameStr() == Name && "Should not be a name conflict!");
685 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
686 /// OptionalAddrSpace GlobalType Type Const
687 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
688 /// OptionalAddrSpace GlobalType Type Const
690 /// Everything through visibility has been parsed already.
692 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
693 unsigned Linkage, bool HasLinkage,
694 unsigned Visibility) {
696 bool ThreadLocal, IsConstant;
699 PATypeHolder Ty(Type::getVoidTy(Context));
700 if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
701 ParseOptionalAddrSpace(AddrSpace) ||
702 ParseGlobalType(IsConstant) ||
703 ParseType(Ty, TyLoc))
706 // If the linkage is specified and is external, then no initializer is
709 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
710 Linkage != GlobalValue::ExternalWeakLinkage &&
711 Linkage != GlobalValue::ExternalLinkage)) {
712 if (ParseGlobalValue(Ty, Init))
716 if (Ty->isFunctionTy() || Ty->isLabelTy())
717 return Error(TyLoc, "invalid type for global variable");
719 GlobalVariable *GV = 0;
721 // See if the global was forward referenced, if so, use the global.
723 if (GlobalValue *GVal = M->getNamedValue(Name)) {
724 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
725 return Error(NameLoc, "redefinition of global '@" + Name + "'");
726 GV = cast<GlobalVariable>(GVal);
729 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
730 I = ForwardRefValIDs.find(NumberedVals.size());
731 if (I != ForwardRefValIDs.end()) {
732 GV = cast<GlobalVariable>(I->second.first);
733 ForwardRefValIDs.erase(I);
738 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
739 Name, 0, false, AddrSpace);
741 if (GV->getType()->getElementType() != Ty)
743 "forward reference and definition of global have different types");
745 // Move the forward-reference to the correct spot in the module.
746 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
750 NumberedVals.push_back(GV);
752 // Set the parsed properties on the global.
754 GV->setInitializer(Init);
755 GV->setConstant(IsConstant);
756 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
757 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
758 GV->setThreadLocal(ThreadLocal);
760 // Parse attributes on the global.
761 while (Lex.getKind() == lltok::comma) {
764 if (Lex.getKind() == lltok::kw_section) {
766 GV->setSection(Lex.getStrVal());
767 if (ParseToken(lltok::StringConstant, "expected global section string"))
769 } else if (Lex.getKind() == lltok::kw_align) {
771 if (ParseOptionalAlignment(Alignment)) return true;
772 GV->setAlignment(Alignment);
774 TokError("unknown global variable property!");
782 //===----------------------------------------------------------------------===//
783 // GlobalValue Reference/Resolution Routines.
784 //===----------------------------------------------------------------------===//
786 /// GetGlobalVal - Get a value with the specified name or ID, creating a
787 /// forward reference record if needed. This can return null if the value
788 /// exists but does not have the right type.
789 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, const Type *Ty,
791 const PointerType *PTy = dyn_cast<PointerType>(Ty);
793 Error(Loc, "global variable reference must have pointer type");
797 // Look this name up in the normal function symbol table.
799 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
801 // If this is a forward reference for the value, see if we already created a
802 // forward ref record.
804 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
805 I = ForwardRefVals.find(Name);
806 if (I != ForwardRefVals.end())
807 Val = I->second.first;
810 // If we have the value in the symbol table or fwd-ref table, return it.
812 if (Val->getType() == Ty) return Val;
813 Error(Loc, "'@" + Name + "' defined with type '" +
814 Val->getType()->getDescription() + "'");
818 // Otherwise, create a new forward reference for this value and remember it.
820 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
821 // Function types can return opaque but functions can't.
822 if (FT->getReturnType()->isOpaqueTy()) {
823 Error(Loc, "function may not return opaque type");
827 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
829 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
830 GlobalValue::ExternalWeakLinkage, 0, Name);
833 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
837 GlobalValue *LLParser::GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc) {
838 const PointerType *PTy = dyn_cast<PointerType>(Ty);
840 Error(Loc, "global variable reference must have pointer type");
844 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
846 // If this is a forward reference for the value, see if we already created a
847 // forward ref record.
849 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
850 I = ForwardRefValIDs.find(ID);
851 if (I != ForwardRefValIDs.end())
852 Val = I->second.first;
855 // If we have the value in the symbol table or fwd-ref table, return it.
857 if (Val->getType() == Ty) return Val;
858 Error(Loc, "'@" + utostr(ID) + "' defined with type '" +
859 Val->getType()->getDescription() + "'");
863 // Otherwise, create a new forward reference for this value and remember it.
865 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
866 // Function types can return opaque but functions can't.
867 if (FT->getReturnType()->isOpaqueTy()) {
868 Error(Loc, "function may not return opaque type");
871 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
873 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
874 GlobalValue::ExternalWeakLinkage, 0, "");
877 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
882 //===----------------------------------------------------------------------===//
884 //===----------------------------------------------------------------------===//
886 /// ParseToken - If the current token has the specified kind, eat it and return
887 /// success. Otherwise, emit the specified error and return failure.
888 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
889 if (Lex.getKind() != T)
890 return TokError(ErrMsg);
895 /// ParseStringConstant
896 /// ::= StringConstant
897 bool LLParser::ParseStringConstant(std::string &Result) {
898 if (Lex.getKind() != lltok::StringConstant)
899 return TokError("expected string constant");
900 Result = Lex.getStrVal();
907 bool LLParser::ParseUInt32(unsigned &Val) {
908 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
909 return TokError("expected integer");
910 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
911 if (Val64 != unsigned(Val64))
912 return TokError("expected 32-bit integer (too large)");
919 /// ParseOptionalAddrSpace
921 /// := 'addrspace' '(' uint32 ')'
922 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
924 if (!EatIfPresent(lltok::kw_addrspace))
926 return ParseToken(lltok::lparen, "expected '(' in address space") ||
927 ParseUInt32(AddrSpace) ||
928 ParseToken(lltok::rparen, "expected ')' in address space");
931 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
932 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
933 /// 2: function attr.
934 /// 3: function arg after value: FIXME: REMOVE IN LLVM 3.0
935 bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
936 Attrs = Attribute::None;
937 LocTy AttrLoc = Lex.getLoc();
940 switch (Lex.getKind()) {
943 // Treat these as signext/zeroext if they occur in the argument list after
944 // the value, as in "call i8 @foo(i8 10 sext)". If they occur before the
945 // value, as in "call i8 @foo(i8 sext (" then it is part of a constant
947 // FIXME: REMOVE THIS IN LLVM 3.0
949 if (Lex.getKind() == lltok::kw_sext)
950 Attrs |= Attribute::SExt;
952 Attrs |= Attribute::ZExt;
956 default: // End of attributes.
957 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
958 return Error(AttrLoc, "invalid use of function-only attribute");
960 if (AttrKind != 0 && AttrKind != 3 && (Attrs & Attribute::ParameterOnly))
961 return Error(AttrLoc, "invalid use of parameter-only attribute");
964 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
965 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
966 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
967 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
968 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
969 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
970 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
971 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
973 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
974 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
975 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
976 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
977 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
978 case lltok::kw_inlinehint: Attrs |= Attribute::InlineHint; break;
979 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
980 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
981 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
982 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
983 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
984 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
985 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
987 case lltok::kw_alignstack: {
989 if (ParseOptionalStackAlignment(Alignment))
991 Attrs |= Attribute::constructStackAlignmentFromInt(Alignment);
995 case lltok::kw_align: {
997 if (ParseOptionalAlignment(Alignment))
999 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
1008 /// ParseOptionalLinkage
1011 /// ::= 'linker_private'
1012 /// ::= 'linker_private_weak'
1013 /// ::= 'linker_private_weak_def_auto'
1018 /// ::= 'linkonce_odr'
1019 /// ::= 'available_externally'
1024 /// ::= 'extern_weak'
1026 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1028 switch (Lex.getKind()) {
1029 default: Res=GlobalValue::ExternalLinkage; return false;
1030 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1031 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1032 case lltok::kw_linker_private_weak:
1033 Res = GlobalValue::LinkerPrivateWeakLinkage;
1035 case lltok::kw_linker_private_weak_def_auto:
1036 Res = GlobalValue::LinkerPrivateWeakDefAutoLinkage;
1038 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1039 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1040 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1041 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1042 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1043 case lltok::kw_available_externally:
1044 Res = GlobalValue::AvailableExternallyLinkage;
1046 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1047 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1048 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1049 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1050 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1051 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1058 /// ParseOptionalVisibility
1064 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1065 switch (Lex.getKind()) {
1066 default: Res = GlobalValue::DefaultVisibility; return false;
1067 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1068 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1069 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1075 /// ParseOptionalCallingConv
1080 /// ::= 'x86_stdcallcc'
1081 /// ::= 'x86_fastcallcc'
1082 /// ::= 'x86_thiscallcc'
1083 /// ::= 'arm_apcscc'
1084 /// ::= 'arm_aapcscc'
1085 /// ::= 'arm_aapcs_vfpcc'
1086 /// ::= 'msp430_intrcc'
1089 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1090 switch (Lex.getKind()) {
1091 default: CC = CallingConv::C; return false;
1092 case lltok::kw_ccc: CC = CallingConv::C; break;
1093 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1094 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1095 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1096 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1097 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1098 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1099 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1100 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1101 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1102 case lltok::kw_cc: {
1103 unsigned ArbitraryCC;
1105 if (ParseUInt32(ArbitraryCC)) {
1108 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1118 /// ParseInstructionMetadata
1119 /// ::= !dbg !42 (',' !dbg !57)*
1120 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1121 PerFunctionState *PFS) {
1123 if (Lex.getKind() != lltok::MetadataVar)
1124 return TokError("expected metadata after comma");
1126 std::string Name = Lex.getStrVal();
1131 SMLoc Loc = Lex.getLoc();
1132 if (ParseToken(lltok::exclaim, "expected '!' here") ||
1133 ParseMDNodeID(Node, NodeID))
1136 unsigned MDK = M->getMDKindID(Name.c_str());
1138 // If we got the node, add it to the instruction.
1139 Inst->setMetadata(MDK, Node);
1141 MDRef R = { Loc, MDK, NodeID };
1142 // Otherwise, remember that this should be resolved later.
1143 ForwardRefInstMetadata[Inst].push_back(R);
1146 // If this is the end of the list, we're done.
1147 } while (EatIfPresent(lltok::comma));
1151 /// ParseOptionalAlignment
1154 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1156 if (!EatIfPresent(lltok::kw_align))
1158 LocTy AlignLoc = Lex.getLoc();
1159 if (ParseUInt32(Alignment)) return true;
1160 if (!isPowerOf2_32(Alignment))
1161 return Error(AlignLoc, "alignment is not a power of two");
1162 if (Alignment > Value::MaximumAlignment)
1163 return Error(AlignLoc, "huge alignments are not supported yet");
1167 /// ParseOptionalCommaAlign
1171 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1173 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1174 bool &AteExtraComma) {
1175 AteExtraComma = false;
1176 while (EatIfPresent(lltok::comma)) {
1177 // Metadata at the end is an early exit.
1178 if (Lex.getKind() == lltok::MetadataVar) {
1179 AteExtraComma = true;
1183 if (Lex.getKind() != lltok::kw_align)
1184 return Error(Lex.getLoc(), "expected metadata or 'align'");
1186 LocTy AlignLoc = Lex.getLoc();
1187 if (ParseOptionalAlignment(Alignment)) return true;
1193 /// ParseOptionalStackAlignment
1195 /// ::= 'alignstack' '(' 4 ')'
1196 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1198 if (!EatIfPresent(lltok::kw_alignstack))
1200 LocTy ParenLoc = Lex.getLoc();
1201 if (!EatIfPresent(lltok::lparen))
1202 return Error(ParenLoc, "expected '('");
1203 LocTy AlignLoc = Lex.getLoc();
1204 if (ParseUInt32(Alignment)) return true;
1205 ParenLoc = Lex.getLoc();
1206 if (!EatIfPresent(lltok::rparen))
1207 return Error(ParenLoc, "expected ')'");
1208 if (!isPowerOf2_32(Alignment))
1209 return Error(AlignLoc, "stack alignment is not a power of two");
1213 /// ParseIndexList - This parses the index list for an insert/extractvalue
1214 /// instruction. This sets AteExtraComma in the case where we eat an extra
1215 /// comma at the end of the line and find that it is followed by metadata.
1216 /// Clients that don't allow metadata can call the version of this function that
1217 /// only takes one argument.
1220 /// ::= (',' uint32)+
1222 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1223 bool &AteExtraComma) {
1224 AteExtraComma = false;
1226 if (Lex.getKind() != lltok::comma)
1227 return TokError("expected ',' as start of index list");
1229 while (EatIfPresent(lltok::comma)) {
1230 if (Lex.getKind() == lltok::MetadataVar) {
1231 AteExtraComma = true;
1235 if (ParseUInt32(Idx)) return true;
1236 Indices.push_back(Idx);
1242 //===----------------------------------------------------------------------===//
1244 //===----------------------------------------------------------------------===//
1246 /// ParseType - Parse and resolve a full type.
1247 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1248 LocTy TypeLoc = Lex.getLoc();
1249 if (ParseTypeRec(Result)) return true;
1251 // Verify no unresolved uprefs.
1252 if (!UpRefs.empty())
1253 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1255 if (!AllowVoid && Result.get()->isVoidTy())
1256 return Error(TypeLoc, "void type only allowed for function results");
1261 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1262 /// called. It loops through the UpRefs vector, which is a list of the
1263 /// currently active types. For each type, if the up-reference is contained in
1264 /// the newly completed type, we decrement the level count. When the level
1265 /// count reaches zero, the up-referenced type is the type that is passed in:
1266 /// thus we can complete the cycle.
1268 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1269 // If Ty isn't abstract, or if there are no up-references in it, then there is
1270 // nothing to resolve here.
1271 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1273 PATypeHolder Ty(ty);
1275 dbgs() << "Type '" << Ty->getDescription()
1276 << "' newly formed. Resolving upreferences.\n"
1277 << UpRefs.size() << " upreferences active!\n";
1280 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1281 // to zero), we resolve them all together before we resolve them to Ty. At
1282 // the end of the loop, if there is anything to resolve to Ty, it will be in
1284 OpaqueType *TypeToResolve = 0;
1286 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1287 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1289 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1290 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1293 dbgs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1294 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1295 << (ContainsType ? "true" : "false")
1296 << " level=" << UpRefs[i].NestingLevel << "\n";
1301 // Decrement level of upreference
1302 unsigned Level = --UpRefs[i].NestingLevel;
1303 UpRefs[i].LastContainedTy = Ty;
1305 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1310 dbgs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1313 TypeToResolve = UpRefs[i].UpRefTy;
1315 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1316 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1317 --i; // Do not skip the next element.
1321 TypeToResolve->refineAbstractTypeTo(Ty);
1327 /// ParseTypeRec - The recursive function used to process the internal
1328 /// implementation details of types.
1329 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1330 switch (Lex.getKind()) {
1332 return TokError("expected type");
1334 // TypeRec ::= 'float' | 'void' (etc)
1335 Result = Lex.getTyVal();
1338 case lltok::kw_opaque:
1339 // TypeRec ::= 'opaque'
1340 Result = OpaqueType::get(Context);
1344 // TypeRec ::= '{' ... '}'
1345 if (ParseStructType(Result, false))
1348 case lltok::kw_union:
1349 // TypeRec ::= 'union' '{' ... '}'
1350 if (ParseUnionType(Result))
1353 case lltok::lsquare:
1354 // TypeRec ::= '[' ... ']'
1355 Lex.Lex(); // eat the lsquare.
1356 if (ParseArrayVectorType(Result, false))
1359 case lltok::less: // Either vector or packed struct.
1360 // TypeRec ::= '<' ... '>'
1362 if (Lex.getKind() == lltok::lbrace) {
1363 if (ParseStructType(Result, true) ||
1364 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1366 } else if (ParseArrayVectorType(Result, true))
1369 case lltok::LocalVar:
1370 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1372 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1375 Result = OpaqueType::get(Context);
1376 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1377 std::make_pair(Result,
1379 M->addTypeName(Lex.getStrVal(), Result.get());
1384 case lltok::LocalVarID:
1386 if (Lex.getUIntVal() < NumberedTypes.size())
1387 Result = NumberedTypes[Lex.getUIntVal()];
1389 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1390 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1391 if (I != ForwardRefTypeIDs.end())
1392 Result = I->second.first;
1394 Result = OpaqueType::get(Context);
1395 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1396 std::make_pair(Result,
1402 case lltok::backslash: {
1403 // TypeRec ::= '\' 4
1406 if (ParseUInt32(Val)) return true;
1407 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1408 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1414 // Parse the type suffixes.
1416 switch (Lex.getKind()) {
1418 default: return false;
1420 // TypeRec ::= TypeRec '*'
1422 if (Result.get()->isLabelTy())
1423 return TokError("basic block pointers are invalid");
1424 if (Result.get()->isVoidTy())
1425 return TokError("pointers to void are invalid; use i8* instead");
1426 if (!PointerType::isValidElementType(Result.get()))
1427 return TokError("pointer to this type is invalid");
1428 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1432 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1433 case lltok::kw_addrspace: {
1434 if (Result.get()->isLabelTy())
1435 return TokError("basic block pointers are invalid");
1436 if (Result.get()->isVoidTy())
1437 return TokError("pointers to void are invalid; use i8* instead");
1438 if (!PointerType::isValidElementType(Result.get()))
1439 return TokError("pointer to this type is invalid");
1441 if (ParseOptionalAddrSpace(AddrSpace) ||
1442 ParseToken(lltok::star, "expected '*' in address space"))
1445 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1449 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1451 if (ParseFunctionType(Result))
1458 /// ParseParameterList
1460 /// ::= '(' Arg (',' Arg)* ')'
1462 /// ::= Type OptionalAttributes Value OptionalAttributes
1463 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1464 PerFunctionState &PFS) {
1465 if (ParseToken(lltok::lparen, "expected '(' in call"))
1468 while (Lex.getKind() != lltok::rparen) {
1469 // If this isn't the first argument, we need a comma.
1470 if (!ArgList.empty() &&
1471 ParseToken(lltok::comma, "expected ',' in argument list"))
1474 // Parse the argument.
1476 PATypeHolder ArgTy(Type::getVoidTy(Context));
1477 unsigned ArgAttrs1 = Attribute::None;
1478 unsigned ArgAttrs2 = Attribute::None;
1480 if (ParseType(ArgTy, ArgLoc))
1483 // Otherwise, handle normal operands.
1484 if (ParseOptionalAttrs(ArgAttrs1, 0) ||
1485 ParseValue(ArgTy, V, PFS) ||
1486 // FIXME: Should not allow attributes after the argument, remove this
1488 ParseOptionalAttrs(ArgAttrs2, 3))
1490 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1493 Lex.Lex(); // Lex the ')'.
1499 /// ParseArgumentList - Parse the argument list for a function type or function
1500 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1501 /// ::= '(' ArgTypeListI ')'
1505 /// ::= ArgTypeList ',' '...'
1506 /// ::= ArgType (',' ArgType)*
1508 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1509 bool &isVarArg, bool inType) {
1511 assert(Lex.getKind() == lltok::lparen);
1512 Lex.Lex(); // eat the (.
1514 if (Lex.getKind() == lltok::rparen) {
1516 } else if (Lex.getKind() == lltok::dotdotdot) {
1520 LocTy TypeLoc = Lex.getLoc();
1521 PATypeHolder ArgTy(Type::getVoidTy(Context));
1525 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1526 // types (such as a function returning a pointer to itself). If parsing a
1527 // function prototype, we require fully resolved types.
1528 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1529 ParseOptionalAttrs(Attrs, 0)) return true;
1531 if (ArgTy->isVoidTy())
1532 return Error(TypeLoc, "argument can not have void type");
1534 if (Lex.getKind() == lltok::LocalVar ||
1535 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1536 Name = Lex.getStrVal();
1540 if (!FunctionType::isValidArgumentType(ArgTy))
1541 return Error(TypeLoc, "invalid type for function argument");
1543 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1545 while (EatIfPresent(lltok::comma)) {
1546 // Handle ... at end of arg list.
1547 if (EatIfPresent(lltok::dotdotdot)) {
1552 // Otherwise must be an argument type.
1553 TypeLoc = Lex.getLoc();
1554 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1555 ParseOptionalAttrs(Attrs, 0)) return true;
1557 if (ArgTy->isVoidTy())
1558 return Error(TypeLoc, "argument can not have void type");
1560 if (Lex.getKind() == lltok::LocalVar ||
1561 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1562 Name = Lex.getStrVal();
1568 if (!ArgTy->isFirstClassType() && !ArgTy->isOpaqueTy())
1569 return Error(TypeLoc, "invalid type for function argument");
1571 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1575 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1578 /// ParseFunctionType
1579 /// ::= Type ArgumentList OptionalAttrs
1580 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1581 assert(Lex.getKind() == lltok::lparen);
1583 if (!FunctionType::isValidReturnType(Result))
1584 return TokError("invalid function return type");
1586 std::vector<ArgInfo> ArgList;
1589 if (ParseArgumentList(ArgList, isVarArg, true) ||
1590 // FIXME: Allow, but ignore attributes on function types!
1591 // FIXME: Remove in LLVM 3.0
1592 ParseOptionalAttrs(Attrs, 2))
1595 // Reject names on the arguments lists.
1596 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1597 if (!ArgList[i].Name.empty())
1598 return Error(ArgList[i].Loc, "argument name invalid in function type");
1599 if (!ArgList[i].Attrs != 0) {
1600 // Allow but ignore attributes on function types; this permits
1602 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1606 std::vector<const Type*> ArgListTy;
1607 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1608 ArgListTy.push_back(ArgList[i].Type);
1610 Result = HandleUpRefs(FunctionType::get(Result.get(),
1611 ArgListTy, isVarArg));
1615 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1618 /// ::= '{' TypeRec (',' TypeRec)* '}'
1619 /// ::= '<' '{' '}' '>'
1620 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1621 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1622 assert(Lex.getKind() == lltok::lbrace);
1623 Lex.Lex(); // Consume the '{'
1625 if (EatIfPresent(lltok::rbrace)) {
1626 Result = StructType::get(Context, Packed);
1630 std::vector<PATypeHolder> ParamsList;
1631 LocTy EltTyLoc = Lex.getLoc();
1632 if (ParseTypeRec(Result)) return true;
1633 ParamsList.push_back(Result);
1635 if (Result->isVoidTy())
1636 return Error(EltTyLoc, "struct element can not have void type");
1637 if (!StructType::isValidElementType(Result))
1638 return Error(EltTyLoc, "invalid element type for struct");
1640 while (EatIfPresent(lltok::comma)) {
1641 EltTyLoc = Lex.getLoc();
1642 if (ParseTypeRec(Result)) return true;
1644 if (Result->isVoidTy())
1645 return Error(EltTyLoc, "struct element can not have void type");
1646 if (!StructType::isValidElementType(Result))
1647 return Error(EltTyLoc, "invalid element type for struct");
1649 ParamsList.push_back(Result);
1652 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1655 std::vector<const Type*> ParamsListTy;
1656 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1657 ParamsListTy.push_back(ParamsList[i].get());
1658 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1664 /// ::= 'union' '{' TypeRec (',' TypeRec)* '}'
1665 bool LLParser::ParseUnionType(PATypeHolder &Result) {
1666 assert(Lex.getKind() == lltok::kw_union);
1667 Lex.Lex(); // Consume the 'union'
1669 if (ParseToken(lltok::lbrace, "'{' expected after 'union'")) return true;
1671 SmallVector<PATypeHolder, 8> ParamsList;
1673 LocTy EltTyLoc = Lex.getLoc();
1674 if (ParseTypeRec(Result)) return true;
1675 ParamsList.push_back(Result);
1677 if (Result->isVoidTy())
1678 return Error(EltTyLoc, "union element can not have void type");
1679 if (!UnionType::isValidElementType(Result))
1680 return Error(EltTyLoc, "invalid element type for union");
1682 } while (EatIfPresent(lltok::comma)) ;
1684 if (ParseToken(lltok::rbrace, "expected '}' at end of union"))
1687 SmallVector<const Type*, 8> ParamsListTy;
1688 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1689 ParamsListTy.push_back(ParamsList[i].get());
1690 Result = HandleUpRefs(UnionType::get(&ParamsListTy[0], ParamsListTy.size()));
1694 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1695 /// token has already been consumed.
1697 /// ::= '[' APSINTVAL 'x' Types ']'
1698 /// ::= '<' APSINTVAL 'x' Types '>'
1699 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1700 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1701 Lex.getAPSIntVal().getBitWidth() > 64)
1702 return TokError("expected number in address space");
1704 LocTy SizeLoc = Lex.getLoc();
1705 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1708 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1711 LocTy TypeLoc = Lex.getLoc();
1712 PATypeHolder EltTy(Type::getVoidTy(Context));
1713 if (ParseTypeRec(EltTy)) return true;
1715 if (EltTy->isVoidTy())
1716 return Error(TypeLoc, "array and vector element type cannot be void");
1718 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1719 "expected end of sequential type"))
1724 return Error(SizeLoc, "zero element vector is illegal");
1725 if ((unsigned)Size != Size)
1726 return Error(SizeLoc, "size too large for vector");
1727 if (!VectorType::isValidElementType(EltTy))
1728 return Error(TypeLoc, "vector element type must be fp or integer");
1729 Result = VectorType::get(EltTy, unsigned(Size));
1731 if (!ArrayType::isValidElementType(EltTy))
1732 return Error(TypeLoc, "invalid array element type");
1733 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1738 //===----------------------------------------------------------------------===//
1739 // Function Semantic Analysis.
1740 //===----------------------------------------------------------------------===//
1742 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1744 : P(p), F(f), FunctionNumber(functionNumber) {
1746 // Insert unnamed arguments into the NumberedVals list.
1747 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1750 NumberedVals.push_back(AI);
1753 LLParser::PerFunctionState::~PerFunctionState() {
1754 // If there were any forward referenced non-basicblock values, delete them.
1755 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1756 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1757 if (!isa<BasicBlock>(I->second.first)) {
1758 I->second.first->replaceAllUsesWith(
1759 UndefValue::get(I->second.first->getType()));
1760 delete I->second.first;
1761 I->second.first = 0;
1764 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1765 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1766 if (!isa<BasicBlock>(I->second.first)) {
1767 I->second.first->replaceAllUsesWith(
1768 UndefValue::get(I->second.first->getType()));
1769 delete I->second.first;
1770 I->second.first = 0;
1774 bool LLParser::PerFunctionState::FinishFunction() {
1775 // Check to see if someone took the address of labels in this block.
1776 if (!P.ForwardRefBlockAddresses.empty()) {
1778 if (!F.getName().empty()) {
1779 FunctionID.Kind = ValID::t_GlobalName;
1780 FunctionID.StrVal = F.getName();
1782 FunctionID.Kind = ValID::t_GlobalID;
1783 FunctionID.UIntVal = FunctionNumber;
1786 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1787 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1788 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1789 // Resolve all these references.
1790 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1793 P.ForwardRefBlockAddresses.erase(FRBAI);
1797 if (!ForwardRefVals.empty())
1798 return P.Error(ForwardRefVals.begin()->second.second,
1799 "use of undefined value '%" + ForwardRefVals.begin()->first +
1801 if (!ForwardRefValIDs.empty())
1802 return P.Error(ForwardRefValIDs.begin()->second.second,
1803 "use of undefined value '%" +
1804 utostr(ForwardRefValIDs.begin()->first) + "'");
1809 /// GetVal - Get a value with the specified name or ID, creating a
1810 /// forward reference record if needed. This can return null if the value
1811 /// exists but does not have the right type.
1812 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1813 const Type *Ty, LocTy Loc) {
1814 // Look this name up in the normal function symbol table.
1815 Value *Val = F.getValueSymbolTable().lookup(Name);
1817 // If this is a forward reference for the value, see if we already created a
1818 // forward ref record.
1820 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1821 I = ForwardRefVals.find(Name);
1822 if (I != ForwardRefVals.end())
1823 Val = I->second.first;
1826 // If we have the value in the symbol table or fwd-ref table, return it.
1828 if (Val->getType() == Ty) return Val;
1829 if (Ty->isLabelTy())
1830 P.Error(Loc, "'%" + Name + "' is not a basic block");
1832 P.Error(Loc, "'%" + Name + "' defined with type '" +
1833 Val->getType()->getDescription() + "'");
1837 // Don't make placeholders with invalid type.
1838 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1839 P.Error(Loc, "invalid use of a non-first-class type");
1843 // Otherwise, create a new forward reference for this value and remember it.
1845 if (Ty->isLabelTy())
1846 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1848 FwdVal = new Argument(Ty, Name);
1850 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1854 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1856 // Look this name up in the normal function symbol table.
1857 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1859 // If this is a forward reference for the value, see if we already created a
1860 // forward ref record.
1862 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1863 I = ForwardRefValIDs.find(ID);
1864 if (I != ForwardRefValIDs.end())
1865 Val = I->second.first;
1868 // If we have the value in the symbol table or fwd-ref table, return it.
1870 if (Val->getType() == Ty) return Val;
1871 if (Ty->isLabelTy())
1872 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1874 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1875 Val->getType()->getDescription() + "'");
1879 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1880 P.Error(Loc, "invalid use of a non-first-class type");
1884 // Otherwise, create a new forward reference for this value and remember it.
1886 if (Ty->isLabelTy())
1887 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1889 FwdVal = new Argument(Ty);
1891 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1895 /// SetInstName - After an instruction is parsed and inserted into its
1896 /// basic block, this installs its name.
1897 bool LLParser::PerFunctionState::SetInstName(int NameID,
1898 const std::string &NameStr,
1899 LocTy NameLoc, Instruction *Inst) {
1900 // If this instruction has void type, it cannot have a name or ID specified.
1901 if (Inst->getType()->isVoidTy()) {
1902 if (NameID != -1 || !NameStr.empty())
1903 return P.Error(NameLoc, "instructions returning void cannot have a name");
1907 // If this was a numbered instruction, verify that the instruction is the
1908 // expected value and resolve any forward references.
1909 if (NameStr.empty()) {
1910 // If neither a name nor an ID was specified, just use the next ID.
1912 NameID = NumberedVals.size();
1914 if (unsigned(NameID) != NumberedVals.size())
1915 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1916 utostr(NumberedVals.size()) + "'");
1918 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1919 ForwardRefValIDs.find(NameID);
1920 if (FI != ForwardRefValIDs.end()) {
1921 if (FI->second.first->getType() != Inst->getType())
1922 return P.Error(NameLoc, "instruction forward referenced with type '" +
1923 FI->second.first->getType()->getDescription() + "'");
1924 FI->second.first->replaceAllUsesWith(Inst);
1925 delete FI->second.first;
1926 ForwardRefValIDs.erase(FI);
1929 NumberedVals.push_back(Inst);
1933 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1934 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1935 FI = ForwardRefVals.find(NameStr);
1936 if (FI != ForwardRefVals.end()) {
1937 if (FI->second.first->getType() != Inst->getType())
1938 return P.Error(NameLoc, "instruction forward referenced with type '" +
1939 FI->second.first->getType()->getDescription() + "'");
1940 FI->second.first->replaceAllUsesWith(Inst);
1941 delete FI->second.first;
1942 ForwardRefVals.erase(FI);
1945 // Set the name on the instruction.
1946 Inst->setName(NameStr);
1948 if (Inst->getNameStr() != NameStr)
1949 return P.Error(NameLoc, "multiple definition of local value named '" +
1954 /// GetBB - Get a basic block with the specified name or ID, creating a
1955 /// forward reference record if needed.
1956 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1958 return cast_or_null<BasicBlock>(GetVal(Name,
1959 Type::getLabelTy(F.getContext()), Loc));
1962 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1963 return cast_or_null<BasicBlock>(GetVal(ID,
1964 Type::getLabelTy(F.getContext()), Loc));
1967 /// DefineBB - Define the specified basic block, which is either named or
1968 /// unnamed. If there is an error, this returns null otherwise it returns
1969 /// the block being defined.
1970 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1974 BB = GetBB(NumberedVals.size(), Loc);
1976 BB = GetBB(Name, Loc);
1977 if (BB == 0) return 0; // Already diagnosed error.
1979 // Move the block to the end of the function. Forward ref'd blocks are
1980 // inserted wherever they happen to be referenced.
1981 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1983 // Remove the block from forward ref sets.
1985 ForwardRefValIDs.erase(NumberedVals.size());
1986 NumberedVals.push_back(BB);
1988 // BB forward references are already in the function symbol table.
1989 ForwardRefVals.erase(Name);
1995 //===----------------------------------------------------------------------===//
1997 //===----------------------------------------------------------------------===//
1999 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2000 /// type implied. For example, if we parse "4" we don't know what integer type
2001 /// it has. The value will later be combined with its type and checked for
2002 /// sanity. PFS is used to convert function-local operands of metadata (since
2003 /// metadata operands are not just parsed here but also converted to values).
2004 /// PFS can be null when we are not parsing metadata values inside a function.
2005 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2006 ID.Loc = Lex.getLoc();
2007 switch (Lex.getKind()) {
2008 default: return TokError("expected value token");
2009 case lltok::GlobalID: // @42
2010 ID.UIntVal = Lex.getUIntVal();
2011 ID.Kind = ValID::t_GlobalID;
2013 case lltok::GlobalVar: // @foo
2014 ID.StrVal = Lex.getStrVal();
2015 ID.Kind = ValID::t_GlobalName;
2017 case lltok::LocalVarID: // %42
2018 ID.UIntVal = Lex.getUIntVal();
2019 ID.Kind = ValID::t_LocalID;
2021 case lltok::LocalVar: // %foo
2022 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
2023 ID.StrVal = Lex.getStrVal();
2024 ID.Kind = ValID::t_LocalName;
2026 case lltok::exclaim: // !42, !{...}, or !"foo"
2027 return ParseMetadataValue(ID, PFS);
2029 ID.APSIntVal = Lex.getAPSIntVal();
2030 ID.Kind = ValID::t_APSInt;
2032 case lltok::APFloat:
2033 ID.APFloatVal = Lex.getAPFloatVal();
2034 ID.Kind = ValID::t_APFloat;
2036 case lltok::kw_true:
2037 ID.ConstantVal = ConstantInt::getTrue(Context);
2038 ID.Kind = ValID::t_Constant;
2040 case lltok::kw_false:
2041 ID.ConstantVal = ConstantInt::getFalse(Context);
2042 ID.Kind = ValID::t_Constant;
2044 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2045 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2046 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2048 case lltok::lbrace: {
2049 // ValID ::= '{' ConstVector '}'
2051 SmallVector<Constant*, 16> Elts;
2052 if (ParseGlobalValueVector(Elts) ||
2053 ParseToken(lltok::rbrace, "expected end of struct constant"))
2056 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
2057 Elts.size(), false);
2058 ID.Kind = ValID::t_Constant;
2062 // ValID ::= '<' ConstVector '>' --> Vector.
2063 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2065 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2067 SmallVector<Constant*, 16> Elts;
2068 LocTy FirstEltLoc = Lex.getLoc();
2069 if (ParseGlobalValueVector(Elts) ||
2071 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2072 ParseToken(lltok::greater, "expected end of constant"))
2075 if (isPackedStruct) {
2077 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
2078 ID.Kind = ValID::t_Constant;
2083 return Error(ID.Loc, "constant vector must not be empty");
2085 if (!Elts[0]->getType()->isIntegerTy() &&
2086 !Elts[0]->getType()->isFloatingPointTy())
2087 return Error(FirstEltLoc,
2088 "vector elements must have integer or floating point type");
2090 // Verify that all the vector elements have the same type.
2091 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2092 if (Elts[i]->getType() != Elts[0]->getType())
2093 return Error(FirstEltLoc,
2094 "vector element #" + utostr(i) +
2095 " is not of type '" + Elts[0]->getType()->getDescription());
2097 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
2098 ID.Kind = ValID::t_Constant;
2101 case lltok::lsquare: { // Array Constant
2103 SmallVector<Constant*, 16> Elts;
2104 LocTy FirstEltLoc = Lex.getLoc();
2105 if (ParseGlobalValueVector(Elts) ||
2106 ParseToken(lltok::rsquare, "expected end of array constant"))
2109 // Handle empty element.
2111 // Use undef instead of an array because it's inconvenient to determine
2112 // the element type at this point, there being no elements to examine.
2113 ID.Kind = ValID::t_EmptyArray;
2117 if (!Elts[0]->getType()->isFirstClassType())
2118 return Error(FirstEltLoc, "invalid array element type: " +
2119 Elts[0]->getType()->getDescription());
2121 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2123 // Verify all elements are correct type!
2124 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2125 if (Elts[i]->getType() != Elts[0]->getType())
2126 return Error(FirstEltLoc,
2127 "array element #" + utostr(i) +
2128 " is not of type '" +Elts[0]->getType()->getDescription());
2131 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
2132 ID.Kind = ValID::t_Constant;
2135 case lltok::kw_c: // c "foo"
2137 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
2138 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2139 ID.Kind = ValID::t_Constant;
2142 case lltok::kw_asm: {
2143 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2144 bool HasSideEffect, AlignStack;
2146 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2147 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2148 ParseStringConstant(ID.StrVal) ||
2149 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2150 ParseToken(lltok::StringConstant, "expected constraint string"))
2152 ID.StrVal2 = Lex.getStrVal();
2153 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2154 ID.Kind = ValID::t_InlineAsm;
2158 case lltok::kw_blockaddress: {
2159 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2163 LocTy FnLoc, LabelLoc;
2165 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2167 ParseToken(lltok::comma, "expected comma in block address expression")||
2168 ParseValID(Label) ||
2169 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2172 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2173 return Error(Fn.Loc, "expected function name in blockaddress");
2174 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2175 return Error(Label.Loc, "expected basic block name in blockaddress");
2177 // Make a global variable as a placeholder for this reference.
2178 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2179 false, GlobalValue::InternalLinkage,
2181 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2182 ID.ConstantVal = FwdRef;
2183 ID.Kind = ValID::t_Constant;
2187 case lltok::kw_trunc:
2188 case lltok::kw_zext:
2189 case lltok::kw_sext:
2190 case lltok::kw_fptrunc:
2191 case lltok::kw_fpext:
2192 case lltok::kw_bitcast:
2193 case lltok::kw_uitofp:
2194 case lltok::kw_sitofp:
2195 case lltok::kw_fptoui:
2196 case lltok::kw_fptosi:
2197 case lltok::kw_inttoptr:
2198 case lltok::kw_ptrtoint: {
2199 unsigned Opc = Lex.getUIntVal();
2200 PATypeHolder DestTy(Type::getVoidTy(Context));
2203 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2204 ParseGlobalTypeAndValue(SrcVal) ||
2205 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2206 ParseType(DestTy) ||
2207 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2209 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2210 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2211 SrcVal->getType()->getDescription() + "' to '" +
2212 DestTy->getDescription() + "'");
2213 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2215 ID.Kind = ValID::t_Constant;
2218 case lltok::kw_extractvalue: {
2221 SmallVector<unsigned, 4> Indices;
2222 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2223 ParseGlobalTypeAndValue(Val) ||
2224 ParseIndexList(Indices) ||
2225 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2228 if (!Val->getType()->isAggregateType())
2229 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2230 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
2232 return Error(ID.Loc, "invalid indices for extractvalue");
2234 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
2235 ID.Kind = ValID::t_Constant;
2238 case lltok::kw_insertvalue: {
2240 Constant *Val0, *Val1;
2241 SmallVector<unsigned, 4> Indices;
2242 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2243 ParseGlobalTypeAndValue(Val0) ||
2244 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2245 ParseGlobalTypeAndValue(Val1) ||
2246 ParseIndexList(Indices) ||
2247 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2249 if (!Val0->getType()->isAggregateType())
2250 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2251 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
2253 return Error(ID.Loc, "invalid indices for insertvalue");
2254 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
2255 Indices.data(), Indices.size());
2256 ID.Kind = ValID::t_Constant;
2259 case lltok::kw_icmp:
2260 case lltok::kw_fcmp: {
2261 unsigned PredVal, Opc = Lex.getUIntVal();
2262 Constant *Val0, *Val1;
2264 if (ParseCmpPredicate(PredVal, Opc) ||
2265 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2266 ParseGlobalTypeAndValue(Val0) ||
2267 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2268 ParseGlobalTypeAndValue(Val1) ||
2269 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2272 if (Val0->getType() != Val1->getType())
2273 return Error(ID.Loc, "compare operands must have the same type");
2275 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2277 if (Opc == Instruction::FCmp) {
2278 if (!Val0->getType()->isFPOrFPVectorTy())
2279 return Error(ID.Loc, "fcmp requires floating point operands");
2280 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2282 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2283 if (!Val0->getType()->isIntOrIntVectorTy() &&
2284 !Val0->getType()->isPointerTy())
2285 return Error(ID.Loc, "icmp requires pointer or integer operands");
2286 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2288 ID.Kind = ValID::t_Constant;
2292 // Binary Operators.
2294 case lltok::kw_fadd:
2296 case lltok::kw_fsub:
2298 case lltok::kw_fmul:
2299 case lltok::kw_udiv:
2300 case lltok::kw_sdiv:
2301 case lltok::kw_fdiv:
2302 case lltok::kw_urem:
2303 case lltok::kw_srem:
2304 case lltok::kw_frem: {
2308 unsigned Opc = Lex.getUIntVal();
2309 Constant *Val0, *Val1;
2311 LocTy ModifierLoc = Lex.getLoc();
2312 if (Opc == Instruction::Add ||
2313 Opc == Instruction::Sub ||
2314 Opc == Instruction::Mul) {
2315 if (EatIfPresent(lltok::kw_nuw))
2317 if (EatIfPresent(lltok::kw_nsw)) {
2319 if (EatIfPresent(lltok::kw_nuw))
2322 } else if (Opc == Instruction::SDiv) {
2323 if (EatIfPresent(lltok::kw_exact))
2326 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2327 ParseGlobalTypeAndValue(Val0) ||
2328 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2329 ParseGlobalTypeAndValue(Val1) ||
2330 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2332 if (Val0->getType() != Val1->getType())
2333 return Error(ID.Loc, "operands of constexpr must have same type");
2334 if (!Val0->getType()->isIntOrIntVectorTy()) {
2336 return Error(ModifierLoc, "nuw only applies to integer operations");
2338 return Error(ModifierLoc, "nsw only applies to integer operations");
2340 // Check that the type is valid for the operator.
2342 case Instruction::Add:
2343 case Instruction::Sub:
2344 case Instruction::Mul:
2345 case Instruction::UDiv:
2346 case Instruction::SDiv:
2347 case Instruction::URem:
2348 case Instruction::SRem:
2349 if (!Val0->getType()->isIntOrIntVectorTy())
2350 return Error(ID.Loc, "constexpr requires integer operands");
2352 case Instruction::FAdd:
2353 case Instruction::FSub:
2354 case Instruction::FMul:
2355 case Instruction::FDiv:
2356 case Instruction::FRem:
2357 if (!Val0->getType()->isFPOrFPVectorTy())
2358 return Error(ID.Loc, "constexpr requires fp operands");
2360 default: llvm_unreachable("Unknown binary operator!");
2363 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2364 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2365 if (Exact) Flags |= SDivOperator::IsExact;
2366 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2368 ID.Kind = ValID::t_Constant;
2372 // Logical Operations
2374 case lltok::kw_lshr:
2375 case lltok::kw_ashr:
2378 case lltok::kw_xor: {
2379 unsigned Opc = Lex.getUIntVal();
2380 Constant *Val0, *Val1;
2382 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2383 ParseGlobalTypeAndValue(Val0) ||
2384 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2385 ParseGlobalTypeAndValue(Val1) ||
2386 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2388 if (Val0->getType() != Val1->getType())
2389 return Error(ID.Loc, "operands of constexpr must have same type");
2390 if (!Val0->getType()->isIntOrIntVectorTy())
2391 return Error(ID.Loc,
2392 "constexpr requires integer or integer vector operands");
2393 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2394 ID.Kind = ValID::t_Constant;
2398 case lltok::kw_getelementptr:
2399 case lltok::kw_shufflevector:
2400 case lltok::kw_insertelement:
2401 case lltok::kw_extractelement:
2402 case lltok::kw_select: {
2403 unsigned Opc = Lex.getUIntVal();
2404 SmallVector<Constant*, 16> Elts;
2405 bool InBounds = false;
2407 if (Opc == Instruction::GetElementPtr)
2408 InBounds = EatIfPresent(lltok::kw_inbounds);
2409 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2410 ParseGlobalValueVector(Elts) ||
2411 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2414 if (Opc == Instruction::GetElementPtr) {
2415 if (Elts.size() == 0 || !Elts[0]->getType()->isPointerTy())
2416 return Error(ID.Loc, "getelementptr requires pointer operand");
2418 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2419 (Value**)(Elts.data() + 1),
2421 return Error(ID.Loc, "invalid indices for getelementptr");
2422 ID.ConstantVal = InBounds ?
2423 ConstantExpr::getInBoundsGetElementPtr(Elts[0],
2426 ConstantExpr::getGetElementPtr(Elts[0],
2427 Elts.data() + 1, Elts.size() - 1);
2428 } else if (Opc == Instruction::Select) {
2429 if (Elts.size() != 3)
2430 return Error(ID.Loc, "expected three operands to select");
2431 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2433 return Error(ID.Loc, Reason);
2434 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2435 } else if (Opc == Instruction::ShuffleVector) {
2436 if (Elts.size() != 3)
2437 return Error(ID.Loc, "expected three operands to shufflevector");
2438 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2439 return Error(ID.Loc, "invalid operands to shufflevector");
2441 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2442 } else if (Opc == Instruction::ExtractElement) {
2443 if (Elts.size() != 2)
2444 return Error(ID.Loc, "expected two operands to extractelement");
2445 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2446 return Error(ID.Loc, "invalid extractelement operands");
2447 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2449 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2450 if (Elts.size() != 3)
2451 return Error(ID.Loc, "expected three operands to insertelement");
2452 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2453 return Error(ID.Loc, "invalid insertelement operands");
2455 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2458 ID.Kind = ValID::t_Constant;
2467 /// ParseGlobalValue - Parse a global value with the specified type.
2468 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&C) {
2472 bool Parsed = ParseValID(ID) ||
2473 ConvertValIDToValue(Ty, ID, V, NULL);
2474 if (V && !(C = dyn_cast<Constant>(V)))
2475 return Error(ID.Loc, "global values must be constants");
2479 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2480 PATypeHolder Type(Type::getVoidTy(Context));
2481 return ParseType(Type) ||
2482 ParseGlobalValue(Type, V);
2485 /// ParseGlobalValueVector
2487 /// ::= TypeAndValue (',' TypeAndValue)*
2488 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2490 if (Lex.getKind() == lltok::rbrace ||
2491 Lex.getKind() == lltok::rsquare ||
2492 Lex.getKind() == lltok::greater ||
2493 Lex.getKind() == lltok::rparen)
2497 if (ParseGlobalTypeAndValue(C)) return true;
2500 while (EatIfPresent(lltok::comma)) {
2501 if (ParseGlobalTypeAndValue(C)) return true;
2508 /// ParseMetadataValue
2512 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2513 assert(Lex.getKind() == lltok::exclaim);
2518 if (EatIfPresent(lltok::lbrace)) {
2519 SmallVector<Value*, 16> Elts;
2520 if (ParseMDNodeVector(Elts, PFS) ||
2521 ParseToken(lltok::rbrace, "expected end of metadata node"))
2524 ID.MDNodeVal = MDNode::get(Context, Elts.data(), Elts.size());
2525 ID.Kind = ValID::t_MDNode;
2529 // Standalone metadata reference
2531 if (Lex.getKind() == lltok::APSInt) {
2532 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2533 ID.Kind = ValID::t_MDNode;
2538 // ::= '!' STRINGCONSTANT
2539 if (ParseMDString(ID.MDStringVal)) return true;
2540 ID.Kind = ValID::t_MDString;
2545 //===----------------------------------------------------------------------===//
2546 // Function Parsing.
2547 //===----------------------------------------------------------------------===//
2549 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2550 PerFunctionState *PFS) {
2551 if (Ty->isFunctionTy())
2552 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2555 default: llvm_unreachable("Unknown ValID!");
2556 case ValID::t_LocalID:
2557 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2558 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2560 case ValID::t_LocalName:
2561 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2562 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2564 case ValID::t_InlineAsm: {
2565 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2566 const FunctionType *FTy =
2567 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2568 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2569 return Error(ID.Loc, "invalid type for inline asm constraint string");
2570 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2573 case ValID::t_MDNode:
2574 if (!Ty->isMetadataTy())
2575 return Error(ID.Loc, "metadata value must have metadata type");
2578 case ValID::t_MDString:
2579 if (!Ty->isMetadataTy())
2580 return Error(ID.Loc, "metadata value must have metadata type");
2583 case ValID::t_GlobalName:
2584 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2586 case ValID::t_GlobalID:
2587 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2589 case ValID::t_APSInt:
2590 if (!Ty->isIntegerTy())
2591 return Error(ID.Loc, "integer constant must have integer type");
2592 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2593 V = ConstantInt::get(Context, ID.APSIntVal);
2595 case ValID::t_APFloat:
2596 if (!Ty->isFloatingPointTy() ||
2597 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2598 return Error(ID.Loc, "floating point constant invalid for type");
2600 // The lexer has no type info, so builds all float and double FP constants
2601 // as double. Fix this here. Long double does not need this.
2602 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2605 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2608 V = ConstantFP::get(Context, ID.APFloatVal);
2610 if (V->getType() != Ty)
2611 return Error(ID.Loc, "floating point constant does not have type '" +
2612 Ty->getDescription() + "'");
2616 if (!Ty->isPointerTy())
2617 return Error(ID.Loc, "null must be a pointer type");
2618 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2620 case ValID::t_Undef:
2621 // FIXME: LabelTy should not be a first-class type.
2622 if ((!Ty->isFirstClassType() || Ty->isLabelTy()) &&
2624 return Error(ID.Loc, "invalid type for undef constant");
2625 V = UndefValue::get(Ty);
2627 case ValID::t_EmptyArray:
2628 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2629 return Error(ID.Loc, "invalid empty array initializer");
2630 V = UndefValue::get(Ty);
2633 // FIXME: LabelTy should not be a first-class type.
2634 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2635 return Error(ID.Loc, "invalid type for null constant");
2636 V = Constant::getNullValue(Ty);
2638 case ValID::t_Constant:
2639 if (ID.ConstantVal->getType() != Ty) {
2640 // Allow a constant struct with a single member to be converted
2641 // to a union, if the union has a member which is the same type
2642 // as the struct member.
2643 if (const UnionType* utype = dyn_cast<UnionType>(Ty)) {
2644 return ParseUnionValue(utype, ID, V);
2647 return Error(ID.Loc, "constant expression type mismatch");
2655 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2658 return ParseValID(ID, &PFS) ||
2659 ConvertValIDToValue(Ty, ID, V, &PFS);
2662 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2663 PATypeHolder T(Type::getVoidTy(Context));
2664 return ParseType(T) ||
2665 ParseValue(T, V, PFS);
2668 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2669 PerFunctionState &PFS) {
2672 if (ParseTypeAndValue(V, PFS)) return true;
2673 if (!isa<BasicBlock>(V))
2674 return Error(Loc, "expected a basic block");
2675 BB = cast<BasicBlock>(V);
2679 bool LLParser::ParseUnionValue(const UnionType* utype, ValID &ID, Value *&V) {
2680 if (const StructType* stype = dyn_cast<StructType>(ID.ConstantVal->getType())) {
2681 if (stype->getNumContainedTypes() != 1)
2682 return Error(ID.Loc, "constant expression type mismatch");
2683 int index = utype->getElementTypeIndex(stype->getContainedType(0));
2685 return Error(ID.Loc, "initializer type is not a member of the union");
2687 V = ConstantUnion::get(
2688 utype, cast<Constant>(ID.ConstantVal->getOperand(0)));
2692 return Error(ID.Loc, "constant expression type mismatch");
2697 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2698 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2699 /// OptionalAlign OptGC
2700 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2701 // Parse the linkage.
2702 LocTy LinkageLoc = Lex.getLoc();
2705 unsigned Visibility, RetAttrs;
2707 PATypeHolder RetType(Type::getVoidTy(Context));
2708 LocTy RetTypeLoc = Lex.getLoc();
2709 if (ParseOptionalLinkage(Linkage) ||
2710 ParseOptionalVisibility(Visibility) ||
2711 ParseOptionalCallingConv(CC) ||
2712 ParseOptionalAttrs(RetAttrs, 1) ||
2713 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2716 // Verify that the linkage is ok.
2717 switch ((GlobalValue::LinkageTypes)Linkage) {
2718 case GlobalValue::ExternalLinkage:
2719 break; // always ok.
2720 case GlobalValue::DLLImportLinkage:
2721 case GlobalValue::ExternalWeakLinkage:
2723 return Error(LinkageLoc, "invalid linkage for function definition");
2725 case GlobalValue::PrivateLinkage:
2726 case GlobalValue::LinkerPrivateLinkage:
2727 case GlobalValue::LinkerPrivateWeakLinkage:
2728 case GlobalValue::LinkerPrivateWeakDefAutoLinkage:
2729 case GlobalValue::InternalLinkage:
2730 case GlobalValue::AvailableExternallyLinkage:
2731 case GlobalValue::LinkOnceAnyLinkage:
2732 case GlobalValue::LinkOnceODRLinkage:
2733 case GlobalValue::WeakAnyLinkage:
2734 case GlobalValue::WeakODRLinkage:
2735 case GlobalValue::DLLExportLinkage:
2737 return Error(LinkageLoc, "invalid linkage for function declaration");
2739 case GlobalValue::AppendingLinkage:
2740 case GlobalValue::CommonLinkage:
2741 return Error(LinkageLoc, "invalid function linkage type");
2744 if (!FunctionType::isValidReturnType(RetType) ||
2745 RetType->isOpaqueTy())
2746 return Error(RetTypeLoc, "invalid function return type");
2748 LocTy NameLoc = Lex.getLoc();
2750 std::string FunctionName;
2751 if (Lex.getKind() == lltok::GlobalVar) {
2752 FunctionName = Lex.getStrVal();
2753 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2754 unsigned NameID = Lex.getUIntVal();
2756 if (NameID != NumberedVals.size())
2757 return TokError("function expected to be numbered '%" +
2758 utostr(NumberedVals.size()) + "'");
2760 return TokError("expected function name");
2765 if (Lex.getKind() != lltok::lparen)
2766 return TokError("expected '(' in function argument list");
2768 std::vector<ArgInfo> ArgList;
2771 std::string Section;
2775 if (ParseArgumentList(ArgList, isVarArg, false) ||
2776 ParseOptionalAttrs(FuncAttrs, 2) ||
2777 (EatIfPresent(lltok::kw_section) &&
2778 ParseStringConstant(Section)) ||
2779 ParseOptionalAlignment(Alignment) ||
2780 (EatIfPresent(lltok::kw_gc) &&
2781 ParseStringConstant(GC)))
2784 // If the alignment was parsed as an attribute, move to the alignment field.
2785 if (FuncAttrs & Attribute::Alignment) {
2786 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2787 FuncAttrs &= ~Attribute::Alignment;
2790 // Okay, if we got here, the function is syntactically valid. Convert types
2791 // and do semantic checks.
2792 std::vector<const Type*> ParamTypeList;
2793 SmallVector<AttributeWithIndex, 8> Attrs;
2794 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2796 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2797 if (FuncAttrs & ObsoleteFuncAttrs) {
2798 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2799 FuncAttrs &= ~ObsoleteFuncAttrs;
2802 if (RetAttrs != Attribute::None)
2803 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2805 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2806 ParamTypeList.push_back(ArgList[i].Type);
2807 if (ArgList[i].Attrs != Attribute::None)
2808 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2811 if (FuncAttrs != Attribute::None)
2812 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2814 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2816 if (PAL.paramHasAttr(1, Attribute::StructRet) && !RetType->isVoidTy())
2817 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2819 const FunctionType *FT =
2820 FunctionType::get(RetType, ParamTypeList, isVarArg);
2821 const PointerType *PFT = PointerType::getUnqual(FT);
2824 if (!FunctionName.empty()) {
2825 // If this was a definition of a forward reference, remove the definition
2826 // from the forward reference table and fill in the forward ref.
2827 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2828 ForwardRefVals.find(FunctionName);
2829 if (FRVI != ForwardRefVals.end()) {
2830 Fn = M->getFunction(FunctionName);
2831 if (Fn->getType() != PFT)
2832 return Error(FRVI->second.second, "invalid forward reference to "
2833 "function '" + FunctionName + "' with wrong type!");
2835 ForwardRefVals.erase(FRVI);
2836 } else if ((Fn = M->getFunction(FunctionName))) {
2837 // If this function already exists in the symbol table, then it is
2838 // multiply defined. We accept a few cases for old backwards compat.
2839 // FIXME: Remove this stuff for LLVM 3.0.
2840 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2841 (!Fn->isDeclaration() && isDefine)) {
2842 // If the redefinition has different type or different attributes,
2843 // reject it. If both have bodies, reject it.
2844 return Error(NameLoc, "invalid redefinition of function '" +
2845 FunctionName + "'");
2846 } else if (Fn->isDeclaration()) {
2847 // Make sure to strip off any argument names so we can't get conflicts.
2848 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2852 } else if (M->getNamedValue(FunctionName)) {
2853 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2857 // If this is a definition of a forward referenced function, make sure the
2859 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2860 = ForwardRefValIDs.find(NumberedVals.size());
2861 if (I != ForwardRefValIDs.end()) {
2862 Fn = cast<Function>(I->second.first);
2863 if (Fn->getType() != PFT)
2864 return Error(NameLoc, "type of definition and forward reference of '@" +
2865 utostr(NumberedVals.size()) +"' disagree");
2866 ForwardRefValIDs.erase(I);
2871 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2872 else // Move the forward-reference to the correct spot in the module.
2873 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2875 if (FunctionName.empty())
2876 NumberedVals.push_back(Fn);
2878 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2879 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2880 Fn->setCallingConv(CC);
2881 Fn->setAttributes(PAL);
2882 Fn->setAlignment(Alignment);
2883 Fn->setSection(Section);
2884 if (!GC.empty()) Fn->setGC(GC.c_str());
2886 // Add all of the arguments we parsed to the function.
2887 Function::arg_iterator ArgIt = Fn->arg_begin();
2888 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2889 // If we run out of arguments in the Function prototype, exit early.
2890 // FIXME: REMOVE THIS IN LLVM 3.0, this is just for the mismatch case above.
2891 if (ArgIt == Fn->arg_end()) break;
2893 // If the argument has a name, insert it into the argument symbol table.
2894 if (ArgList[i].Name.empty()) continue;
2896 // Set the name, if it conflicted, it will be auto-renamed.
2897 ArgIt->setName(ArgList[i].Name);
2899 if (ArgIt->getNameStr() != ArgList[i].Name)
2900 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2901 ArgList[i].Name + "'");
2908 /// ParseFunctionBody
2909 /// ::= '{' BasicBlock+ '}'
2910 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2912 bool LLParser::ParseFunctionBody(Function &Fn) {
2913 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2914 return TokError("expected '{' in function body");
2915 Lex.Lex(); // eat the {.
2917 int FunctionNumber = -1;
2918 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2920 PerFunctionState PFS(*this, Fn, FunctionNumber);
2922 // We need at least one basic block.
2923 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_end)
2924 return TokError("function body requires at least one basic block");
2926 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2927 if (ParseBasicBlock(PFS)) return true;
2932 // Verify function is ok.
2933 return PFS.FinishFunction();
2937 /// ::= LabelStr? Instruction*
2938 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2939 // If this basic block starts out with a name, remember it.
2941 LocTy NameLoc = Lex.getLoc();
2942 if (Lex.getKind() == lltok::LabelStr) {
2943 Name = Lex.getStrVal();
2947 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2948 if (BB == 0) return true;
2950 std::string NameStr;
2952 // Parse the instructions in this block until we get a terminator.
2954 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2956 // This instruction may have three possibilities for a name: a) none
2957 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2958 LocTy NameLoc = Lex.getLoc();
2962 if (Lex.getKind() == lltok::LocalVarID) {
2963 NameID = Lex.getUIntVal();
2965 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2967 } else if (Lex.getKind() == lltok::LocalVar ||
2968 // FIXME: REMOVE IN LLVM 3.0
2969 Lex.getKind() == lltok::StringConstant) {
2970 NameStr = Lex.getStrVal();
2972 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2976 switch (ParseInstruction(Inst, BB, PFS)) {
2977 default: assert(0 && "Unknown ParseInstruction result!");
2978 case InstError: return true;
2980 BB->getInstList().push_back(Inst);
2982 // With a normal result, we check to see if the instruction is followed by
2983 // a comma and metadata.
2984 if (EatIfPresent(lltok::comma))
2985 if (ParseInstructionMetadata(Inst, &PFS))
2988 case InstExtraComma:
2989 BB->getInstList().push_back(Inst);
2991 // If the instruction parser ate an extra comma at the end of it, it
2992 // *must* be followed by metadata.
2993 if (ParseInstructionMetadata(Inst, &PFS))
2998 // Set the name on the instruction.
2999 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3000 } while (!isa<TerminatorInst>(Inst));
3005 //===----------------------------------------------------------------------===//
3006 // Instruction Parsing.
3007 //===----------------------------------------------------------------------===//
3009 /// ParseInstruction - Parse one of the many different instructions.
3011 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3012 PerFunctionState &PFS) {
3013 lltok::Kind Token = Lex.getKind();
3014 if (Token == lltok::Eof)
3015 return TokError("found end of file when expecting more instructions");
3016 LocTy Loc = Lex.getLoc();
3017 unsigned KeywordVal = Lex.getUIntVal();
3018 Lex.Lex(); // Eat the keyword.
3021 default: return Error(Loc, "expected instruction opcode");
3022 // Terminator Instructions.
3023 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
3024 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3025 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3026 case lltok::kw_br: return ParseBr(Inst, PFS);
3027 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3028 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3029 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3030 // Binary Operators.
3033 case lltok::kw_mul: {
3036 LocTy ModifierLoc = Lex.getLoc();
3037 if (EatIfPresent(lltok::kw_nuw))
3039 if (EatIfPresent(lltok::kw_nsw)) {
3041 if (EatIfPresent(lltok::kw_nuw))
3044 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3046 if (!Inst->getType()->isIntOrIntVectorTy()) {
3048 return Error(ModifierLoc, "nuw only applies to integer operations");
3050 return Error(ModifierLoc, "nsw only applies to integer operations");
3053 cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3055 cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3059 case lltok::kw_fadd:
3060 case lltok::kw_fsub:
3061 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3063 case lltok::kw_sdiv: {
3065 if (EatIfPresent(lltok::kw_exact))
3067 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3070 cast<BinaryOperator>(Inst)->setIsExact(true);
3074 case lltok::kw_udiv:
3075 case lltok::kw_urem:
3076 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3077 case lltok::kw_fdiv:
3078 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3080 case lltok::kw_lshr:
3081 case lltok::kw_ashr:
3084 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3085 case lltok::kw_icmp:
3086 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3088 case lltok::kw_trunc:
3089 case lltok::kw_zext:
3090 case lltok::kw_sext:
3091 case lltok::kw_fptrunc:
3092 case lltok::kw_fpext:
3093 case lltok::kw_bitcast:
3094 case lltok::kw_uitofp:
3095 case lltok::kw_sitofp:
3096 case lltok::kw_fptoui:
3097 case lltok::kw_fptosi:
3098 case lltok::kw_inttoptr:
3099 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3101 case lltok::kw_select: return ParseSelect(Inst, PFS);
3102 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3103 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3104 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3105 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3106 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3107 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3108 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3110 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3111 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, BB, false);
3112 case lltok::kw_free: return ParseFree(Inst, PFS, BB);
3113 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
3114 case lltok::kw_store: return ParseStore(Inst, PFS, false);
3115 case lltok::kw_volatile:
3116 if (EatIfPresent(lltok::kw_load))
3117 return ParseLoad(Inst, PFS, true);
3118 else if (EatIfPresent(lltok::kw_store))
3119 return ParseStore(Inst, PFS, true);
3121 return TokError("expected 'load' or 'store'");
3122 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
3123 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3124 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3125 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3129 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3130 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3131 if (Opc == Instruction::FCmp) {
3132 switch (Lex.getKind()) {
3133 default: TokError("expected fcmp predicate (e.g. 'oeq')");
3134 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3135 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3136 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3137 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3138 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3139 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3140 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3141 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3142 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3143 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3144 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3145 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3146 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3147 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3148 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3149 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3152 switch (Lex.getKind()) {
3153 default: TokError("expected icmp predicate (e.g. 'eq')");
3154 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3155 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3156 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3157 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3158 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3159 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3160 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3161 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3162 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3163 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3170 //===----------------------------------------------------------------------===//
3171 // Terminator Instructions.
3172 //===----------------------------------------------------------------------===//
3174 /// ParseRet - Parse a return instruction.
3175 /// ::= 'ret' void (',' !dbg, !1)*
3176 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3177 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ (',' !dbg, !1)*
3178 /// [[obsolete: LLVM 3.0]]
3179 int LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3180 PerFunctionState &PFS) {
3181 PATypeHolder Ty(Type::getVoidTy(Context));
3182 if (ParseType(Ty, true /*void allowed*/)) return true;
3184 if (Ty->isVoidTy()) {
3185 Inst = ReturnInst::Create(Context);
3190 if (ParseValue(Ty, RV, PFS)) return true;
3192 bool ExtraComma = false;
3193 if (EatIfPresent(lltok::comma)) {
3194 // Parse optional custom metadata, e.g. !dbg
3195 if (Lex.getKind() == lltok::MetadataVar) {
3198 // The normal case is one return value.
3199 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring
3200 // use of 'ret {i32,i32} {i32 1, i32 2}'
3201 SmallVector<Value*, 8> RVs;
3205 // If optional custom metadata, e.g. !dbg is seen then this is the
3207 if (Lex.getKind() == lltok::MetadataVar)
3209 if (ParseTypeAndValue(RV, PFS)) return true;
3211 } while (EatIfPresent(lltok::comma));
3213 RV = UndefValue::get(PFS.getFunction().getReturnType());
3214 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
3215 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
3216 BB->getInstList().push_back(I);
3222 Inst = ReturnInst::Create(Context, RV);
3223 return ExtraComma ? InstExtraComma : InstNormal;
3228 /// ::= 'br' TypeAndValue
3229 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3230 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3233 BasicBlock *Op1, *Op2;
3234 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3236 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3237 Inst = BranchInst::Create(BB);
3241 if (Op0->getType() != Type::getInt1Ty(Context))
3242 return Error(Loc, "branch condition must have 'i1' type");
3244 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3245 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3246 ParseToken(lltok::comma, "expected ',' after true destination") ||
3247 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3250 Inst = BranchInst::Create(Op1, Op2, Op0);
3256 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3258 /// ::= (TypeAndValue ',' TypeAndValue)*
3259 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3260 LocTy CondLoc, BBLoc;
3262 BasicBlock *DefaultBB;
3263 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3264 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3265 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3266 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3269 if (!Cond->getType()->isIntegerTy())
3270 return Error(CondLoc, "switch condition must have integer type");
3272 // Parse the jump table pairs.
3273 SmallPtrSet<Value*, 32> SeenCases;
3274 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3275 while (Lex.getKind() != lltok::rsquare) {
3279 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3280 ParseToken(lltok::comma, "expected ',' after case value") ||
3281 ParseTypeAndBasicBlock(DestBB, PFS))
3284 if (!SeenCases.insert(Constant))
3285 return Error(CondLoc, "duplicate case value in switch");
3286 if (!isa<ConstantInt>(Constant))
3287 return Error(CondLoc, "case value is not a constant integer");
3289 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3292 Lex.Lex(); // Eat the ']'.
3294 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3295 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3296 SI->addCase(Table[i].first, Table[i].second);
3303 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3304 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3307 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3308 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3309 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3312 if (!Address->getType()->isPointerTy())
3313 return Error(AddrLoc, "indirectbr address must have pointer type");
3315 // Parse the destination list.
3316 SmallVector<BasicBlock*, 16> DestList;
3318 if (Lex.getKind() != lltok::rsquare) {
3320 if (ParseTypeAndBasicBlock(DestBB, PFS))
3322 DestList.push_back(DestBB);
3324 while (EatIfPresent(lltok::comma)) {
3325 if (ParseTypeAndBasicBlock(DestBB, PFS))
3327 DestList.push_back(DestBB);
3331 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3334 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3335 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3336 IBI->addDestination(DestList[i]);
3343 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3344 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3345 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3346 LocTy CallLoc = Lex.getLoc();
3347 unsigned RetAttrs, FnAttrs;
3349 PATypeHolder RetType(Type::getVoidTy(Context));
3352 SmallVector<ParamInfo, 16> ArgList;
3354 BasicBlock *NormalBB, *UnwindBB;
3355 if (ParseOptionalCallingConv(CC) ||
3356 ParseOptionalAttrs(RetAttrs, 1) ||
3357 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3358 ParseValID(CalleeID) ||
3359 ParseParameterList(ArgList, PFS) ||
3360 ParseOptionalAttrs(FnAttrs, 2) ||
3361 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3362 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3363 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3364 ParseTypeAndBasicBlock(UnwindBB, PFS))
3367 // If RetType is a non-function pointer type, then this is the short syntax
3368 // for the call, which means that RetType is just the return type. Infer the
3369 // rest of the function argument types from the arguments that are present.
3370 const PointerType *PFTy = 0;
3371 const FunctionType *Ty = 0;
3372 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3373 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3374 // Pull out the types of all of the arguments...
3375 std::vector<const Type*> ParamTypes;
3376 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3377 ParamTypes.push_back(ArgList[i].V->getType());
3379 if (!FunctionType::isValidReturnType(RetType))
3380 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3382 Ty = FunctionType::get(RetType, ParamTypes, false);
3383 PFTy = PointerType::getUnqual(Ty);
3386 // Look up the callee.
3388 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3390 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3391 // function attributes.
3392 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3393 if (FnAttrs & ObsoleteFuncAttrs) {
3394 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3395 FnAttrs &= ~ObsoleteFuncAttrs;
3398 // Set up the Attributes for the function.
3399 SmallVector<AttributeWithIndex, 8> Attrs;
3400 if (RetAttrs != Attribute::None)
3401 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3403 SmallVector<Value*, 8> Args;
3405 // Loop through FunctionType's arguments and ensure they are specified
3406 // correctly. Also, gather any parameter attributes.
3407 FunctionType::param_iterator I = Ty->param_begin();
3408 FunctionType::param_iterator E = Ty->param_end();
3409 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3410 const Type *ExpectedTy = 0;
3413 } else if (!Ty->isVarArg()) {
3414 return Error(ArgList[i].Loc, "too many arguments specified");
3417 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3418 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3419 ExpectedTy->getDescription() + "'");
3420 Args.push_back(ArgList[i].V);
3421 if (ArgList[i].Attrs != Attribute::None)
3422 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3426 return Error(CallLoc, "not enough parameters specified for call");
3428 if (FnAttrs != Attribute::None)
3429 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3431 // Finish off the Attributes and check them
3432 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3434 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB,
3435 Args.begin(), Args.end());
3436 II->setCallingConv(CC);
3437 II->setAttributes(PAL);
3444 //===----------------------------------------------------------------------===//
3445 // Binary Operators.
3446 //===----------------------------------------------------------------------===//
3449 /// ::= ArithmeticOps TypeAndValue ',' Value
3451 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3452 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3453 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3454 unsigned Opc, unsigned OperandType) {
3455 LocTy Loc; Value *LHS, *RHS;
3456 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3457 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3458 ParseValue(LHS->getType(), RHS, PFS))
3462 switch (OperandType) {
3463 default: llvm_unreachable("Unknown operand type!");
3464 case 0: // int or FP.
3465 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3466 LHS->getType()->isFPOrFPVectorTy();
3468 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3469 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3473 return Error(Loc, "invalid operand type for instruction");
3475 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3480 /// ::= ArithmeticOps TypeAndValue ',' Value {
3481 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3483 LocTy Loc; Value *LHS, *RHS;
3484 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3485 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3486 ParseValue(LHS->getType(), RHS, PFS))
3489 if (!LHS->getType()->isIntOrIntVectorTy())
3490 return Error(Loc,"instruction requires integer or integer vector operands");
3492 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3498 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3499 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3500 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3502 // Parse the integer/fp comparison predicate.
3506 if (ParseCmpPredicate(Pred, Opc) ||
3507 ParseTypeAndValue(LHS, Loc, PFS) ||
3508 ParseToken(lltok::comma, "expected ',' after compare value") ||
3509 ParseValue(LHS->getType(), RHS, PFS))
3512 if (Opc == Instruction::FCmp) {
3513 if (!LHS->getType()->isFPOrFPVectorTy())
3514 return Error(Loc, "fcmp requires floating point operands");
3515 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3517 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3518 if (!LHS->getType()->isIntOrIntVectorTy() &&
3519 !LHS->getType()->isPointerTy())
3520 return Error(Loc, "icmp requires integer operands");
3521 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3526 //===----------------------------------------------------------------------===//
3527 // Other Instructions.
3528 //===----------------------------------------------------------------------===//
3532 /// ::= CastOpc TypeAndValue 'to' Type
3533 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3535 LocTy Loc; Value *Op;
3536 PATypeHolder DestTy(Type::getVoidTy(Context));
3537 if (ParseTypeAndValue(Op, Loc, PFS) ||
3538 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3542 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3543 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3544 return Error(Loc, "invalid cast opcode for cast from '" +
3545 Op->getType()->getDescription() + "' to '" +
3546 DestTy->getDescription() + "'");
3548 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3553 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3554 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3556 Value *Op0, *Op1, *Op2;
3557 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3558 ParseToken(lltok::comma, "expected ',' after select condition") ||
3559 ParseTypeAndValue(Op1, PFS) ||
3560 ParseToken(lltok::comma, "expected ',' after select value") ||
3561 ParseTypeAndValue(Op2, PFS))
3564 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3565 return Error(Loc, Reason);
3567 Inst = SelectInst::Create(Op0, Op1, Op2);
3572 /// ::= 'va_arg' TypeAndValue ',' Type
3573 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3575 PATypeHolder EltTy(Type::getVoidTy(Context));
3577 if (ParseTypeAndValue(Op, PFS) ||
3578 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3579 ParseType(EltTy, TypeLoc))
3582 if (!EltTy->isFirstClassType())
3583 return Error(TypeLoc, "va_arg requires operand with first class type");
3585 Inst = new VAArgInst(Op, EltTy);
3589 /// ParseExtractElement
3590 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3591 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3594 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3595 ParseToken(lltok::comma, "expected ',' after extract value") ||
3596 ParseTypeAndValue(Op1, PFS))
3599 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3600 return Error(Loc, "invalid extractelement operands");
3602 Inst = ExtractElementInst::Create(Op0, Op1);
3606 /// ParseInsertElement
3607 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3608 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3610 Value *Op0, *Op1, *Op2;
3611 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3612 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3613 ParseTypeAndValue(Op1, PFS) ||
3614 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3615 ParseTypeAndValue(Op2, PFS))
3618 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3619 return Error(Loc, "invalid insertelement operands");
3621 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3625 /// ParseShuffleVector
3626 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3627 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3629 Value *Op0, *Op1, *Op2;
3630 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3631 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3632 ParseTypeAndValue(Op1, PFS) ||
3633 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3634 ParseTypeAndValue(Op2, PFS))
3637 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3638 return Error(Loc, "invalid extractelement operands");
3640 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3645 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3646 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3647 PATypeHolder Ty(Type::getVoidTy(Context));
3649 LocTy TypeLoc = Lex.getLoc();
3651 if (ParseType(Ty) ||
3652 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3653 ParseValue(Ty, Op0, PFS) ||
3654 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3655 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3656 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3659 bool AteExtraComma = false;
3660 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3662 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3664 if (!EatIfPresent(lltok::comma))
3667 if (Lex.getKind() == lltok::MetadataVar) {
3668 AteExtraComma = true;
3672 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3673 ParseValue(Ty, Op0, PFS) ||
3674 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3675 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3676 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3680 if (!Ty->isFirstClassType())
3681 return Error(TypeLoc, "phi node must have first class type");
3683 PHINode *PN = PHINode::Create(Ty);
3684 PN->reserveOperandSpace(PHIVals.size());
3685 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3686 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3688 return AteExtraComma ? InstExtraComma : InstNormal;
3692 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3693 /// ParameterList OptionalAttrs
3694 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3696 unsigned RetAttrs, FnAttrs;
3698 PATypeHolder RetType(Type::getVoidTy(Context));
3701 SmallVector<ParamInfo, 16> ArgList;
3702 LocTy CallLoc = Lex.getLoc();
3704 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3705 ParseOptionalCallingConv(CC) ||
3706 ParseOptionalAttrs(RetAttrs, 1) ||
3707 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3708 ParseValID(CalleeID) ||
3709 ParseParameterList(ArgList, PFS) ||
3710 ParseOptionalAttrs(FnAttrs, 2))
3713 // If RetType is a non-function pointer type, then this is the short syntax
3714 // for the call, which means that RetType is just the return type. Infer the
3715 // rest of the function argument types from the arguments that are present.
3716 const PointerType *PFTy = 0;
3717 const FunctionType *Ty = 0;
3718 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3719 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3720 // Pull out the types of all of the arguments...
3721 std::vector<const Type*> ParamTypes;
3722 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3723 ParamTypes.push_back(ArgList[i].V->getType());
3725 if (!FunctionType::isValidReturnType(RetType))
3726 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3728 Ty = FunctionType::get(RetType, ParamTypes, false);
3729 PFTy = PointerType::getUnqual(Ty);
3732 // Look up the callee.
3734 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3736 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3737 // function attributes.
3738 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3739 if (FnAttrs & ObsoleteFuncAttrs) {
3740 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3741 FnAttrs &= ~ObsoleteFuncAttrs;
3744 // Set up the Attributes for the function.
3745 SmallVector<AttributeWithIndex, 8> Attrs;
3746 if (RetAttrs != Attribute::None)
3747 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3749 SmallVector<Value*, 8> Args;
3751 // Loop through FunctionType's arguments and ensure they are specified
3752 // correctly. Also, gather any parameter attributes.
3753 FunctionType::param_iterator I = Ty->param_begin();
3754 FunctionType::param_iterator E = Ty->param_end();
3755 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3756 const Type *ExpectedTy = 0;
3759 } else if (!Ty->isVarArg()) {
3760 return Error(ArgList[i].Loc, "too many arguments specified");
3763 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3764 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3765 ExpectedTy->getDescription() + "'");
3766 Args.push_back(ArgList[i].V);
3767 if (ArgList[i].Attrs != Attribute::None)
3768 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3772 return Error(CallLoc, "not enough parameters specified for call");
3774 if (FnAttrs != Attribute::None)
3775 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3777 // Finish off the Attributes and check them
3778 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3780 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3781 CI->setTailCall(isTail);
3782 CI->setCallingConv(CC);
3783 CI->setAttributes(PAL);
3788 //===----------------------------------------------------------------------===//
3789 // Memory Instructions.
3790 //===----------------------------------------------------------------------===//
3793 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalInfo)?
3794 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3795 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3796 BasicBlock* BB, bool isAlloca) {
3797 PATypeHolder Ty(Type::getVoidTy(Context));
3800 unsigned Alignment = 0;
3801 if (ParseType(Ty)) return true;
3803 bool AteExtraComma = false;
3804 if (EatIfPresent(lltok::comma)) {
3805 if (Lex.getKind() == lltok::kw_align) {
3806 if (ParseOptionalAlignment(Alignment)) return true;
3807 } else if (Lex.getKind() == lltok::MetadataVar) {
3808 AteExtraComma = true;
3810 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3811 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3816 if (Size && !Size->getType()->isIntegerTy())
3817 return Error(SizeLoc, "element count must have integer type");
3820 Inst = new AllocaInst(Ty, Size, Alignment);
3821 return AteExtraComma ? InstExtraComma : InstNormal;
3824 // Autoupgrade old malloc instruction to malloc call.
3825 // FIXME: Remove in LLVM 3.0.
3826 if (Size && !Size->getType()->isIntegerTy(32))
3827 return Error(SizeLoc, "element count must be i32");
3828 const Type *IntPtrTy = Type::getInt32Ty(Context);
3829 Constant *AllocSize = ConstantExpr::getSizeOf(Ty);
3830 AllocSize = ConstantExpr::getTruncOrBitCast(AllocSize, IntPtrTy);
3832 // Prototype malloc as "void *(int32)".
3833 // This function is renamed as "malloc" in ValidateEndOfModule().
3834 MallocF = cast<Function>(
3835 M->getOrInsertFunction("", Type::getInt8PtrTy(Context), IntPtrTy, NULL));
3836 Inst = CallInst::CreateMalloc(BB, IntPtrTy, Ty, AllocSize, Size, MallocF);
3837 return AteExtraComma ? InstExtraComma : InstNormal;
3841 /// ::= 'free' TypeAndValue
3842 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS,
3844 Value *Val; LocTy Loc;
3845 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3846 if (!Val->getType()->isPointerTy())
3847 return Error(Loc, "operand to free must be a pointer");
3848 Inst = CallInst::CreateFree(Val, BB);
3853 /// ::= 'volatile'? 'load' TypeAndValue (',' OptionalInfo)?
3854 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3856 Value *Val; LocTy Loc;
3857 unsigned Alignment = 0;
3858 bool AteExtraComma = false;
3859 if (ParseTypeAndValue(Val, Loc, PFS) ||
3860 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3863 if (!Val->getType()->isPointerTy() ||
3864 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3865 return Error(Loc, "load operand must be a pointer to a first class type");
3867 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3868 return AteExtraComma ? InstExtraComma : InstNormal;
3872 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3873 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3875 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3876 unsigned Alignment = 0;
3877 bool AteExtraComma = false;
3878 if (ParseTypeAndValue(Val, Loc, PFS) ||
3879 ParseToken(lltok::comma, "expected ',' after store operand") ||
3880 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3881 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3884 if (!Ptr->getType()->isPointerTy())
3885 return Error(PtrLoc, "store operand must be a pointer");
3886 if (!Val->getType()->isFirstClassType())
3887 return Error(Loc, "store operand must be a first class value");
3888 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3889 return Error(Loc, "stored value and pointer type do not match");
3891 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3892 return AteExtraComma ? InstExtraComma : InstNormal;
3896 /// ::= 'getresult' TypeAndValue ',' i32
3897 /// FIXME: Remove support for getresult in LLVM 3.0
3898 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3899 Value *Val; LocTy ValLoc, EltLoc;
3901 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3902 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3903 ParseUInt32(Element, EltLoc))
3906 if (!Val->getType()->isStructTy() && !Val->getType()->isArrayTy())
3907 return Error(ValLoc, "getresult inst requires an aggregate operand");
3908 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3909 return Error(EltLoc, "invalid getresult index for value");
3910 Inst = ExtractValueInst::Create(Val, Element);
3914 /// ParseGetElementPtr
3915 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3916 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3917 Value *Ptr, *Val; LocTy Loc, EltLoc;
3919 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3921 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3923 if (!Ptr->getType()->isPointerTy())
3924 return Error(Loc, "base of getelementptr must be a pointer");
3926 SmallVector<Value*, 16> Indices;
3927 bool AteExtraComma = false;
3928 while (EatIfPresent(lltok::comma)) {
3929 if (Lex.getKind() == lltok::MetadataVar) {
3930 AteExtraComma = true;
3933 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3934 if (!Val->getType()->isIntegerTy())
3935 return Error(EltLoc, "getelementptr index must be an integer");
3936 Indices.push_back(Val);
3939 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3940 Indices.begin(), Indices.end()))
3941 return Error(Loc, "invalid getelementptr indices");
3942 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3944 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3945 return AteExtraComma ? InstExtraComma : InstNormal;
3948 /// ParseExtractValue
3949 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3950 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3951 Value *Val; LocTy Loc;
3952 SmallVector<unsigned, 4> Indices;
3954 if (ParseTypeAndValue(Val, Loc, PFS) ||
3955 ParseIndexList(Indices, AteExtraComma))
3958 if (!Val->getType()->isAggregateType())
3959 return Error(Loc, "extractvalue operand must be aggregate type");
3961 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3963 return Error(Loc, "invalid indices for extractvalue");
3964 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3965 return AteExtraComma ? InstExtraComma : InstNormal;
3968 /// ParseInsertValue
3969 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3970 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3971 Value *Val0, *Val1; LocTy Loc0, Loc1;
3972 SmallVector<unsigned, 4> Indices;
3974 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3975 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3976 ParseTypeAndValue(Val1, Loc1, PFS) ||
3977 ParseIndexList(Indices, AteExtraComma))
3980 if (!Val0->getType()->isAggregateType())
3981 return Error(Loc0, "insertvalue operand must be aggregate type");
3983 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3985 return Error(Loc0, "invalid indices for insertvalue");
3986 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3987 return AteExtraComma ? InstExtraComma : InstNormal;
3990 //===----------------------------------------------------------------------===//
3991 // Embedded metadata.
3992 //===----------------------------------------------------------------------===//
3994 /// ParseMDNodeVector
3995 /// ::= Element (',' Element)*
3997 /// ::= 'null' | TypeAndValue
3998 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
3999 PerFunctionState *PFS) {
4000 // Check for an empty list.
4001 if (Lex.getKind() == lltok::rbrace)
4005 // Null is a special case since it is typeless.
4006 if (EatIfPresent(lltok::kw_null)) {
4012 PATypeHolder Ty(Type::getVoidTy(Context));
4014 if (ParseType(Ty) || ParseValID(ID, PFS) ||
4015 ConvertValIDToValue(Ty, ID, V, PFS))
4019 } while (EatIfPresent(lltok::comma));