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_internal: // OptionalLinkage
203 case lltok::kw_weak: // OptionalLinkage
204 case lltok::kw_weak_odr: // OptionalLinkage
205 case lltok::kw_linkonce: // OptionalLinkage
206 case lltok::kw_linkonce_odr: // OptionalLinkage
207 case lltok::kw_appending: // OptionalLinkage
208 case lltok::kw_dllexport: // OptionalLinkage
209 case lltok::kw_common: // OptionalLinkage
210 case lltok::kw_dllimport: // OptionalLinkage
211 case lltok::kw_extern_weak: // OptionalLinkage
212 case lltok::kw_external: { // OptionalLinkage
213 unsigned Linkage, Visibility;
214 if (ParseOptionalLinkage(Linkage) ||
215 ParseOptionalVisibility(Visibility) ||
216 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
220 case lltok::kw_default: // OptionalVisibility
221 case lltok::kw_hidden: // OptionalVisibility
222 case lltok::kw_protected: { // OptionalVisibility
224 if (ParseOptionalVisibility(Visibility) ||
225 ParseGlobal("", SMLoc(), 0, false, Visibility))
230 case lltok::kw_thread_local: // OptionalThreadLocal
231 case lltok::kw_addrspace: // OptionalAddrSpace
232 case lltok::kw_constant: // GlobalType
233 case lltok::kw_global: // GlobalType
234 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
242 /// ::= 'module' 'asm' STRINGCONSTANT
243 bool LLParser::ParseModuleAsm() {
244 assert(Lex.getKind() == lltok::kw_module);
248 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
249 ParseStringConstant(AsmStr)) return true;
251 const std::string &AsmSoFar = M->getModuleInlineAsm();
252 if (AsmSoFar.empty())
253 M->setModuleInlineAsm(AsmStr);
255 M->setModuleInlineAsm(AsmSoFar+"\n"+AsmStr);
260 /// ::= 'target' 'triple' '=' STRINGCONSTANT
261 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
262 bool LLParser::ParseTargetDefinition() {
263 assert(Lex.getKind() == lltok::kw_target);
266 default: return TokError("unknown target property");
267 case lltok::kw_triple:
269 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
270 ParseStringConstant(Str))
272 M->setTargetTriple(Str);
274 case lltok::kw_datalayout:
276 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
277 ParseStringConstant(Str))
279 M->setDataLayout(Str);
285 /// ::= 'deplibs' '=' '[' ']'
286 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
287 bool LLParser::ParseDepLibs() {
288 assert(Lex.getKind() == lltok::kw_deplibs);
290 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
291 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
294 if (EatIfPresent(lltok::rsquare))
298 if (ParseStringConstant(Str)) return true;
301 while (EatIfPresent(lltok::comma)) {
302 if (ParseStringConstant(Str)) return true;
306 return ParseToken(lltok::rsquare, "expected ']' at end of list");
309 /// ParseUnnamedType:
311 /// ::= LocalVarID '=' 'type' type
312 bool LLParser::ParseUnnamedType() {
313 unsigned TypeID = NumberedTypes.size();
315 // Handle the LocalVarID form.
316 if (Lex.getKind() == lltok::LocalVarID) {
317 if (Lex.getUIntVal() != TypeID)
318 return Error(Lex.getLoc(), "type expected to be numbered '%" +
319 utostr(TypeID) + "'");
320 Lex.Lex(); // eat LocalVarID;
322 if (ParseToken(lltok::equal, "expected '=' after name"))
326 LocTy TypeLoc = Lex.getLoc();
327 if (ParseToken(lltok::kw_type, "expected 'type' after '='")) return true;
329 PATypeHolder Ty(Type::getVoidTy(Context));
330 if (ParseType(Ty)) return true;
332 // See if this type was previously referenced.
333 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
334 FI = ForwardRefTypeIDs.find(TypeID);
335 if (FI != ForwardRefTypeIDs.end()) {
336 if (FI->second.first.get() == Ty)
337 return Error(TypeLoc, "self referential type is invalid");
339 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
340 Ty = FI->second.first.get();
341 ForwardRefTypeIDs.erase(FI);
344 NumberedTypes.push_back(Ty);
350 /// ::= LocalVar '=' 'type' type
351 bool LLParser::ParseNamedType() {
352 std::string Name = Lex.getStrVal();
353 LocTy NameLoc = Lex.getLoc();
354 Lex.Lex(); // eat LocalVar.
356 PATypeHolder Ty(Type::getVoidTy(Context));
358 if (ParseToken(lltok::equal, "expected '=' after name") ||
359 ParseToken(lltok::kw_type, "expected 'type' after name") ||
363 // Set the type name, checking for conflicts as we do so.
364 bool AlreadyExists = M->addTypeName(Name, Ty);
365 if (!AlreadyExists) return false;
367 // See if this type is a forward reference. We need to eagerly resolve
368 // types to allow recursive type redefinitions below.
369 std::map<std::string, std::pair<PATypeHolder, LocTy> >::iterator
370 FI = ForwardRefTypes.find(Name);
371 if (FI != ForwardRefTypes.end()) {
372 if (FI->second.first.get() == Ty)
373 return Error(NameLoc, "self referential type is invalid");
375 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
376 Ty = FI->second.first.get();
377 ForwardRefTypes.erase(FI);
380 // Inserting a name that is already defined, get the existing name.
381 const Type *Existing = M->getTypeByName(Name);
382 assert(Existing && "Conflict but no matching type?!");
384 // Otherwise, this is an attempt to redefine a type. That's okay if
385 // the redefinition is identical to the original.
386 // FIXME: REMOVE REDEFINITIONS IN LLVM 3.0
387 if (Existing == Ty) return false;
389 // Any other kind of (non-equivalent) redefinition is an error.
390 return Error(NameLoc, "redefinition of type named '" + Name + "' of type '" +
391 Ty->getDescription() + "'");
396 /// ::= 'declare' FunctionHeader
397 bool LLParser::ParseDeclare() {
398 assert(Lex.getKind() == lltok::kw_declare);
402 return ParseFunctionHeader(F, false);
406 /// ::= 'define' FunctionHeader '{' ...
407 bool LLParser::ParseDefine() {
408 assert(Lex.getKind() == lltok::kw_define);
412 return ParseFunctionHeader(F, true) ||
413 ParseFunctionBody(*F);
419 bool LLParser::ParseGlobalType(bool &IsConstant) {
420 if (Lex.getKind() == lltok::kw_constant)
422 else if (Lex.getKind() == lltok::kw_global)
426 return TokError("expected 'global' or 'constant'");
432 /// ParseUnnamedGlobal:
433 /// OptionalVisibility ALIAS ...
434 /// OptionalLinkage OptionalVisibility ... -> global variable
435 /// GlobalID '=' OptionalVisibility ALIAS ...
436 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
437 bool LLParser::ParseUnnamedGlobal() {
438 unsigned VarID = NumberedVals.size();
440 LocTy NameLoc = Lex.getLoc();
442 // Handle the GlobalID form.
443 if (Lex.getKind() == lltok::GlobalID) {
444 if (Lex.getUIntVal() != VarID)
445 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
446 utostr(VarID) + "'");
447 Lex.Lex(); // eat GlobalID;
449 if (ParseToken(lltok::equal, "expected '=' after name"))
454 unsigned Linkage, Visibility;
455 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
456 ParseOptionalVisibility(Visibility))
459 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
460 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
461 return ParseAlias(Name, NameLoc, Visibility);
464 /// ParseNamedGlobal:
465 /// GlobalVar '=' OptionalVisibility ALIAS ...
466 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
467 bool LLParser::ParseNamedGlobal() {
468 assert(Lex.getKind() == lltok::GlobalVar);
469 LocTy NameLoc = Lex.getLoc();
470 std::string Name = Lex.getStrVal();
474 unsigned Linkage, Visibility;
475 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
476 ParseOptionalLinkage(Linkage, HasLinkage) ||
477 ParseOptionalVisibility(Visibility))
480 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
481 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
482 return ParseAlias(Name, NameLoc, Visibility);
486 // ::= '!' STRINGCONSTANT
487 bool LLParser::ParseMDString(MDString *&Result) {
489 if (ParseStringConstant(Str)) return true;
490 Result = MDString::get(Context, Str);
495 // ::= '!' MDNodeNumber
497 /// This version of ParseMDNodeID returns the slot number and null in the case
498 /// of a forward reference.
499 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
500 // !{ ..., !42, ... }
501 if (ParseUInt32(SlotNo)) return true;
503 // Check existing MDNode.
504 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != 0)
505 Result = NumberedMetadata[SlotNo];
511 bool LLParser::ParseMDNodeID(MDNode *&Result) {
512 // !{ ..., !42, ... }
514 if (ParseMDNodeID(Result, MID)) return true;
516 // If not a forward reference, just return it now.
517 if (Result) return false;
519 // Otherwise, create MDNode forward reference.
521 // FIXME: This is not unique enough!
522 std::string FwdRefName = "llvm.mdnode.fwdref." + utostr(MID);
523 Value *V = MDString::get(Context, FwdRefName);
524 MDNode *FwdNode = MDNode::get(Context, &V, 1);
525 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
527 if (NumberedMetadata.size() <= MID)
528 NumberedMetadata.resize(MID+1);
529 NumberedMetadata[MID] = FwdNode;
534 /// ParseNamedMetadata:
535 /// !foo = !{ !1, !2 }
536 bool LLParser::ParseNamedMetadata() {
537 assert(Lex.getKind() == lltok::MetadataVar);
538 std::string Name = Lex.getStrVal();
541 if (ParseToken(lltok::equal, "expected '=' here") ||
542 ParseToken(lltok::exclaim, "Expected '!' here") ||
543 ParseToken(lltok::lbrace, "Expected '{' here"))
546 SmallVector<MDNode *, 8> Elts;
548 // Null is a special case since it is typeless.
549 if (EatIfPresent(lltok::kw_null)) {
554 if (ParseToken(lltok::exclaim, "Expected '!' here"))
558 if (ParseMDNodeID(N)) return true;
560 } while (EatIfPresent(lltok::comma));
562 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
565 NamedMDNode::Create(Context, Name, Elts.data(), Elts.size(), M);
569 /// ParseStandaloneMetadata:
571 bool LLParser::ParseStandaloneMetadata() {
572 assert(Lex.getKind() == lltok::exclaim);
574 unsigned MetadataID = 0;
577 PATypeHolder Ty(Type::getVoidTy(Context));
578 SmallVector<Value *, 16> Elts;
579 if (ParseUInt32(MetadataID) ||
580 ParseToken(lltok::equal, "expected '=' here") ||
581 ParseType(Ty, TyLoc) ||
582 ParseToken(lltok::exclaim, "Expected '!' here") ||
583 ParseToken(lltok::lbrace, "Expected '{' here") ||
584 ParseMDNodeVector(Elts, NULL) ||
585 ParseToken(lltok::rbrace, "expected end of metadata node"))
588 MDNode *Init = MDNode::get(Context, Elts.data(), Elts.size());
590 // See if this was forward referenced, if so, handle it.
591 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
592 FI = ForwardRefMDNodes.find(MetadataID);
593 if (FI != ForwardRefMDNodes.end()) {
594 FI->second.first->replaceAllUsesWith(Init);
595 ForwardRefMDNodes.erase(FI);
597 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
599 if (MetadataID >= NumberedMetadata.size())
600 NumberedMetadata.resize(MetadataID+1);
602 if (NumberedMetadata[MetadataID] != 0)
603 return TokError("Metadata id is already used");
604 NumberedMetadata[MetadataID] = Init;
611 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
614 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
615 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
617 /// Everything through visibility has already been parsed.
619 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
620 unsigned Visibility) {
621 assert(Lex.getKind() == lltok::kw_alias);
624 LocTy LinkageLoc = Lex.getLoc();
625 if (ParseOptionalLinkage(Linkage))
628 if (Linkage != GlobalValue::ExternalLinkage &&
629 Linkage != GlobalValue::WeakAnyLinkage &&
630 Linkage != GlobalValue::WeakODRLinkage &&
631 Linkage != GlobalValue::InternalLinkage &&
632 Linkage != GlobalValue::PrivateLinkage &&
633 Linkage != GlobalValue::LinkerPrivateLinkage &&
634 Linkage != GlobalValue::LinkerPrivateWeakLinkage)
635 return Error(LinkageLoc, "invalid linkage type for alias");
638 LocTy AliaseeLoc = Lex.getLoc();
639 if (Lex.getKind() != lltok::kw_bitcast &&
640 Lex.getKind() != lltok::kw_getelementptr) {
641 if (ParseGlobalTypeAndValue(Aliasee)) return true;
643 // The bitcast dest type is not present, it is implied by the dest type.
645 if (ParseValID(ID)) return true;
646 if (ID.Kind != ValID::t_Constant)
647 return Error(AliaseeLoc, "invalid aliasee");
648 Aliasee = ID.ConstantVal;
651 if (!Aliasee->getType()->isPointerTy())
652 return Error(AliaseeLoc, "alias must have pointer type");
654 // Okay, create the alias but do not insert it into the module yet.
655 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
656 (GlobalValue::LinkageTypes)Linkage, Name,
658 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
660 // See if this value already exists in the symbol table. If so, it is either
661 // a redefinition or a definition of a forward reference.
662 if (GlobalValue *Val = M->getNamedValue(Name)) {
663 // See if this was a redefinition. If so, there is no entry in
665 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
666 I = ForwardRefVals.find(Name);
667 if (I == ForwardRefVals.end())
668 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
670 // Otherwise, this was a definition of forward ref. Verify that types
672 if (Val->getType() != GA->getType())
673 return Error(NameLoc,
674 "forward reference and definition of alias have different types");
676 // If they agree, just RAUW the old value with the alias and remove the
678 Val->replaceAllUsesWith(GA);
679 Val->eraseFromParent();
680 ForwardRefVals.erase(I);
683 // Insert into the module, we know its name won't collide now.
684 M->getAliasList().push_back(GA);
685 assert(GA->getNameStr() == Name && "Should not be a name conflict!");
691 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
692 /// OptionalAddrSpace GlobalType Type Const
693 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
694 /// OptionalAddrSpace GlobalType Type Const
696 /// Everything through visibility has been parsed already.
698 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
699 unsigned Linkage, bool HasLinkage,
700 unsigned Visibility) {
702 bool ThreadLocal, IsConstant;
705 PATypeHolder Ty(Type::getVoidTy(Context));
706 if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
707 ParseOptionalAddrSpace(AddrSpace) ||
708 ParseGlobalType(IsConstant) ||
709 ParseType(Ty, TyLoc))
712 // If the linkage is specified and is external, then no initializer is
715 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
716 Linkage != GlobalValue::ExternalWeakLinkage &&
717 Linkage != GlobalValue::ExternalLinkage)) {
718 if (ParseGlobalValue(Ty, Init))
722 if (Ty->isFunctionTy() || Ty->isLabelTy())
723 return Error(TyLoc, "invalid type for global variable");
725 GlobalVariable *GV = 0;
727 // See if the global was forward referenced, if so, use the global.
729 if (GlobalValue *GVal = M->getNamedValue(Name)) {
730 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
731 return Error(NameLoc, "redefinition of global '@" + Name + "'");
732 GV = cast<GlobalVariable>(GVal);
735 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
736 I = ForwardRefValIDs.find(NumberedVals.size());
737 if (I != ForwardRefValIDs.end()) {
738 GV = cast<GlobalVariable>(I->second.first);
739 ForwardRefValIDs.erase(I);
744 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
745 Name, 0, false, AddrSpace);
747 if (GV->getType()->getElementType() != Ty)
749 "forward reference and definition of global have different types");
751 // Move the forward-reference to the correct spot in the module.
752 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
756 NumberedVals.push_back(GV);
758 // Set the parsed properties on the global.
760 GV->setInitializer(Init);
761 GV->setConstant(IsConstant);
762 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
763 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
764 GV->setThreadLocal(ThreadLocal);
766 // Parse attributes on the global.
767 while (Lex.getKind() == lltok::comma) {
770 if (Lex.getKind() == lltok::kw_section) {
772 GV->setSection(Lex.getStrVal());
773 if (ParseToken(lltok::StringConstant, "expected global section string"))
775 } else if (Lex.getKind() == lltok::kw_align) {
777 if (ParseOptionalAlignment(Alignment)) return true;
778 GV->setAlignment(Alignment);
780 TokError("unknown global variable property!");
788 //===----------------------------------------------------------------------===//
789 // GlobalValue Reference/Resolution Routines.
790 //===----------------------------------------------------------------------===//
792 /// GetGlobalVal - Get a value with the specified name or ID, creating a
793 /// forward reference record if needed. This can return null if the value
794 /// exists but does not have the right type.
795 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, const Type *Ty,
797 const PointerType *PTy = dyn_cast<PointerType>(Ty);
799 Error(Loc, "global variable reference must have pointer type");
803 // Look this name up in the normal function symbol table.
805 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
807 // If this is a forward reference for the value, see if we already created a
808 // forward ref record.
810 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
811 I = ForwardRefVals.find(Name);
812 if (I != ForwardRefVals.end())
813 Val = I->second.first;
816 // If we have the value in the symbol table or fwd-ref table, return it.
818 if (Val->getType() == Ty) return Val;
819 Error(Loc, "'@" + Name + "' defined with type '" +
820 Val->getType()->getDescription() + "'");
824 // Otherwise, create a new forward reference for this value and remember it.
826 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
827 // Function types can return opaque but functions can't.
828 if (FT->getReturnType()->isOpaqueTy()) {
829 Error(Loc, "function may not return opaque type");
833 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
835 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
836 GlobalValue::ExternalWeakLinkage, 0, Name);
839 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
843 GlobalValue *LLParser::GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc) {
844 const PointerType *PTy = dyn_cast<PointerType>(Ty);
846 Error(Loc, "global variable reference must have pointer type");
850 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
852 // If this is a forward reference for the value, see if we already created a
853 // forward ref record.
855 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
856 I = ForwardRefValIDs.find(ID);
857 if (I != ForwardRefValIDs.end())
858 Val = I->second.first;
861 // If we have the value in the symbol table or fwd-ref table, return it.
863 if (Val->getType() == Ty) return Val;
864 Error(Loc, "'@" + utostr(ID) + "' defined with type '" +
865 Val->getType()->getDescription() + "'");
869 // Otherwise, create a new forward reference for this value and remember it.
871 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
872 // Function types can return opaque but functions can't.
873 if (FT->getReturnType()->isOpaqueTy()) {
874 Error(Loc, "function may not return opaque type");
877 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
879 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
880 GlobalValue::ExternalWeakLinkage, 0, "");
883 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
888 //===----------------------------------------------------------------------===//
890 //===----------------------------------------------------------------------===//
892 /// ParseToken - If the current token has the specified kind, eat it and return
893 /// success. Otherwise, emit the specified error and return failure.
894 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
895 if (Lex.getKind() != T)
896 return TokError(ErrMsg);
901 /// ParseStringConstant
902 /// ::= StringConstant
903 bool LLParser::ParseStringConstant(std::string &Result) {
904 if (Lex.getKind() != lltok::StringConstant)
905 return TokError("expected string constant");
906 Result = Lex.getStrVal();
913 bool LLParser::ParseUInt32(unsigned &Val) {
914 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
915 return TokError("expected integer");
916 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
917 if (Val64 != unsigned(Val64))
918 return TokError("expected 32-bit integer (too large)");
925 /// ParseOptionalAddrSpace
927 /// := 'addrspace' '(' uint32 ')'
928 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
930 if (!EatIfPresent(lltok::kw_addrspace))
932 return ParseToken(lltok::lparen, "expected '(' in address space") ||
933 ParseUInt32(AddrSpace) ||
934 ParseToken(lltok::rparen, "expected ')' in address space");
937 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
938 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
939 /// 2: function attr.
940 /// 3: function arg after value: FIXME: REMOVE IN LLVM 3.0
941 bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
942 Attrs = Attribute::None;
943 LocTy AttrLoc = Lex.getLoc();
946 switch (Lex.getKind()) {
949 // Treat these as signext/zeroext if they occur in the argument list after
950 // the value, as in "call i8 @foo(i8 10 sext)". If they occur before the
951 // value, as in "call i8 @foo(i8 sext (" then it is part of a constant
953 // FIXME: REMOVE THIS IN LLVM 3.0
955 if (Lex.getKind() == lltok::kw_sext)
956 Attrs |= Attribute::SExt;
958 Attrs |= Attribute::ZExt;
962 default: // End of attributes.
963 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
964 return Error(AttrLoc, "invalid use of function-only attribute");
966 if (AttrKind != 0 && AttrKind != 3 && (Attrs & Attribute::ParameterOnly))
967 return Error(AttrLoc, "invalid use of parameter-only attribute");
970 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
971 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
972 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
973 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
974 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
975 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
976 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
977 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
979 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
980 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
981 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
982 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
983 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
984 case lltok::kw_inlinehint: Attrs |= Attribute::InlineHint; break;
985 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
986 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
987 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
988 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
989 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
990 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
991 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
993 case lltok::kw_alignstack: {
995 if (ParseOptionalStackAlignment(Alignment))
997 Attrs |= Attribute::constructStackAlignmentFromInt(Alignment);
1001 case lltok::kw_align: {
1003 if (ParseOptionalAlignment(Alignment))
1005 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
1014 /// ParseOptionalLinkage
1017 /// ::= 'linker_private'
1018 /// ::= 'linker_private_weak'
1023 /// ::= 'linkonce_odr'
1024 /// ::= 'available_externally'
1029 /// ::= 'extern_weak'
1031 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1033 switch (Lex.getKind()) {
1034 default: Res=GlobalValue::ExternalLinkage; return false;
1035 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1036 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1037 case lltok::kw_linker_private_weak:
1038 Res = GlobalValue::LinkerPrivateWeakLinkage;
1040 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1041 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1042 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1043 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1044 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1045 case lltok::kw_available_externally:
1046 Res = GlobalValue::AvailableExternallyLinkage;
1048 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1049 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1050 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1051 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1052 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1053 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1060 /// ParseOptionalVisibility
1066 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1067 switch (Lex.getKind()) {
1068 default: Res = GlobalValue::DefaultVisibility; return false;
1069 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1070 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1071 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1077 /// ParseOptionalCallingConv
1082 /// ::= 'x86_stdcallcc'
1083 /// ::= 'x86_fastcallcc'
1084 /// ::= 'x86_thiscallcc'
1085 /// ::= 'arm_apcscc'
1086 /// ::= 'arm_aapcscc'
1087 /// ::= 'arm_aapcs_vfpcc'
1088 /// ::= 'msp430_intrcc'
1091 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1092 switch (Lex.getKind()) {
1093 default: CC = CallingConv::C; return false;
1094 case lltok::kw_ccc: CC = CallingConv::C; break;
1095 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1096 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1097 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1098 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1099 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1100 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1101 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1102 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1103 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1104 case lltok::kw_cc: {
1105 unsigned ArbitraryCC;
1107 if (ParseUInt32(ArbitraryCC)) {
1110 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1120 /// ParseInstructionMetadata
1121 /// ::= !dbg !42 (',' !dbg !57)*
1122 bool LLParser::ParseInstructionMetadata(Instruction *Inst) {
1124 if (Lex.getKind() != lltok::MetadataVar)
1125 return TokError("expected metadata after comma");
1127 std::string Name = Lex.getStrVal();
1132 SMLoc Loc = Lex.getLoc();
1133 if (ParseToken(lltok::exclaim, "expected '!' here") ||
1134 ParseMDNodeID(Node, NodeID))
1137 unsigned MDK = M->getMDKindID(Name.c_str());
1139 // If we got the node, add it to the instruction.
1140 Inst->setMetadata(MDK, Node);
1142 MDRef R = { Loc, MDK, NodeID };
1143 // Otherwise, remember that this should be resolved later.
1144 ForwardRefInstMetadata[Inst].push_back(R);
1147 // If this is the end of the list, we're done.
1148 } while (EatIfPresent(lltok::comma));
1152 /// ParseOptionalAlignment
1155 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1157 if (!EatIfPresent(lltok::kw_align))
1159 LocTy AlignLoc = Lex.getLoc();
1160 if (ParseUInt32(Alignment)) return true;
1161 if (!isPowerOf2_32(Alignment))
1162 return Error(AlignLoc, "alignment is not a power of two");
1166 /// ParseOptionalCommaAlign
1170 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1172 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1173 bool &AteExtraComma) {
1174 AteExtraComma = false;
1175 while (EatIfPresent(lltok::comma)) {
1176 // Metadata at the end is an early exit.
1177 if (Lex.getKind() == lltok::MetadataVar) {
1178 AteExtraComma = true;
1182 if (Lex.getKind() != lltok::kw_align)
1183 return Error(Lex.getLoc(), "expected metadata or 'align'");
1185 if (ParseOptionalAlignment(Alignment)) return true;
1191 /// ParseOptionalStackAlignment
1193 /// ::= 'alignstack' '(' 4 ')'
1194 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1196 if (!EatIfPresent(lltok::kw_alignstack))
1198 LocTy ParenLoc = Lex.getLoc();
1199 if (!EatIfPresent(lltok::lparen))
1200 return Error(ParenLoc, "expected '('");
1201 LocTy AlignLoc = Lex.getLoc();
1202 if (ParseUInt32(Alignment)) return true;
1203 ParenLoc = Lex.getLoc();
1204 if (!EatIfPresent(lltok::rparen))
1205 return Error(ParenLoc, "expected ')'");
1206 if (!isPowerOf2_32(Alignment))
1207 return Error(AlignLoc, "stack alignment is not a power of two");
1211 /// ParseIndexList - This parses the index list for an insert/extractvalue
1212 /// instruction. This sets AteExtraComma in the case where we eat an extra
1213 /// comma at the end of the line and find that it is followed by metadata.
1214 /// Clients that don't allow metadata can call the version of this function that
1215 /// only takes one argument.
1218 /// ::= (',' uint32)+
1220 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1221 bool &AteExtraComma) {
1222 AteExtraComma = false;
1224 if (Lex.getKind() != lltok::comma)
1225 return TokError("expected ',' as start of index list");
1227 while (EatIfPresent(lltok::comma)) {
1228 if (Lex.getKind() == lltok::MetadataVar) {
1229 AteExtraComma = true;
1233 if (ParseUInt32(Idx)) return true;
1234 Indices.push_back(Idx);
1240 //===----------------------------------------------------------------------===//
1242 //===----------------------------------------------------------------------===//
1244 /// ParseType - Parse and resolve a full type.
1245 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1246 LocTy TypeLoc = Lex.getLoc();
1247 if (ParseTypeRec(Result)) return true;
1249 // Verify no unresolved uprefs.
1250 if (!UpRefs.empty())
1251 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1253 if (!AllowVoid && Result.get()->isVoidTy())
1254 return Error(TypeLoc, "void type only allowed for function results");
1259 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1260 /// called. It loops through the UpRefs vector, which is a list of the
1261 /// currently active types. For each type, if the up-reference is contained in
1262 /// the newly completed type, we decrement the level count. When the level
1263 /// count reaches zero, the up-referenced type is the type that is passed in:
1264 /// thus we can complete the cycle.
1266 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1267 // If Ty isn't abstract, or if there are no up-references in it, then there is
1268 // nothing to resolve here.
1269 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1271 PATypeHolder Ty(ty);
1273 dbgs() << "Type '" << Ty->getDescription()
1274 << "' newly formed. Resolving upreferences.\n"
1275 << UpRefs.size() << " upreferences active!\n";
1278 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1279 // to zero), we resolve them all together before we resolve them to Ty. At
1280 // the end of the loop, if there is anything to resolve to Ty, it will be in
1282 OpaqueType *TypeToResolve = 0;
1284 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1285 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1287 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1288 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1291 dbgs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1292 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1293 << (ContainsType ? "true" : "false")
1294 << " level=" << UpRefs[i].NestingLevel << "\n";
1299 // Decrement level of upreference
1300 unsigned Level = --UpRefs[i].NestingLevel;
1301 UpRefs[i].LastContainedTy = Ty;
1303 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1308 dbgs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1311 TypeToResolve = UpRefs[i].UpRefTy;
1313 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1314 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1315 --i; // Do not skip the next element.
1319 TypeToResolve->refineAbstractTypeTo(Ty);
1325 /// ParseTypeRec - The recursive function used to process the internal
1326 /// implementation details of types.
1327 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1328 switch (Lex.getKind()) {
1330 return TokError("expected type");
1332 // TypeRec ::= 'float' | 'void' (etc)
1333 Result = Lex.getTyVal();
1336 case lltok::kw_opaque:
1337 // TypeRec ::= 'opaque'
1338 Result = OpaqueType::get(Context);
1342 // TypeRec ::= '{' ... '}'
1343 if (ParseStructType(Result, false))
1346 case lltok::kw_union:
1347 // TypeRec ::= 'union' '{' ... '}'
1348 if (ParseUnionType(Result))
1351 case lltok::lsquare:
1352 // TypeRec ::= '[' ... ']'
1353 Lex.Lex(); // eat the lsquare.
1354 if (ParseArrayVectorType(Result, false))
1357 case lltok::less: // Either vector or packed struct.
1358 // TypeRec ::= '<' ... '>'
1360 if (Lex.getKind() == lltok::lbrace) {
1361 if (ParseStructType(Result, true) ||
1362 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1364 } else if (ParseArrayVectorType(Result, true))
1367 case lltok::LocalVar:
1368 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1370 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1373 Result = OpaqueType::get(Context);
1374 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1375 std::make_pair(Result,
1377 M->addTypeName(Lex.getStrVal(), Result.get());
1382 case lltok::LocalVarID:
1384 if (Lex.getUIntVal() < NumberedTypes.size())
1385 Result = NumberedTypes[Lex.getUIntVal()];
1387 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1388 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1389 if (I != ForwardRefTypeIDs.end())
1390 Result = I->second.first;
1392 Result = OpaqueType::get(Context);
1393 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1394 std::make_pair(Result,
1400 case lltok::backslash: {
1401 // TypeRec ::= '\' 4
1404 if (ParseUInt32(Val)) return true;
1405 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1406 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1412 // Parse the type suffixes.
1414 switch (Lex.getKind()) {
1416 default: return false;
1418 // TypeRec ::= TypeRec '*'
1420 if (Result.get()->isLabelTy())
1421 return TokError("basic block pointers are invalid");
1422 if (Result.get()->isVoidTy())
1423 return TokError("pointers to void are invalid; use i8* instead");
1424 if (!PointerType::isValidElementType(Result.get()))
1425 return TokError("pointer to this type is invalid");
1426 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1430 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1431 case lltok::kw_addrspace: {
1432 if (Result.get()->isLabelTy())
1433 return TokError("basic block pointers are invalid");
1434 if (Result.get()->isVoidTy())
1435 return TokError("pointers to void are invalid; use i8* instead");
1436 if (!PointerType::isValidElementType(Result.get()))
1437 return TokError("pointer to this type is invalid");
1439 if (ParseOptionalAddrSpace(AddrSpace) ||
1440 ParseToken(lltok::star, "expected '*' in address space"))
1443 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1447 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1449 if (ParseFunctionType(Result))
1456 /// ParseParameterList
1458 /// ::= '(' Arg (',' Arg)* ')'
1460 /// ::= Type OptionalAttributes Value OptionalAttributes
1461 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1462 PerFunctionState &PFS) {
1463 if (ParseToken(lltok::lparen, "expected '(' in call"))
1466 while (Lex.getKind() != lltok::rparen) {
1467 // If this isn't the first argument, we need a comma.
1468 if (!ArgList.empty() &&
1469 ParseToken(lltok::comma, "expected ',' in argument list"))
1472 // Parse the argument.
1474 PATypeHolder ArgTy(Type::getVoidTy(Context));
1475 unsigned ArgAttrs1 = Attribute::None;
1476 unsigned ArgAttrs2 = Attribute::None;
1478 if (ParseType(ArgTy, ArgLoc))
1481 // Otherwise, handle normal operands.
1482 if (ParseOptionalAttrs(ArgAttrs1, 0) ||
1483 ParseValue(ArgTy, V, PFS) ||
1484 // FIXME: Should not allow attributes after the argument, remove this
1486 ParseOptionalAttrs(ArgAttrs2, 3))
1488 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1491 Lex.Lex(); // Lex the ')'.
1497 /// ParseArgumentList - Parse the argument list for a function type or function
1498 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1499 /// ::= '(' ArgTypeListI ')'
1503 /// ::= ArgTypeList ',' '...'
1504 /// ::= ArgType (',' ArgType)*
1506 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1507 bool &isVarArg, bool inType) {
1509 assert(Lex.getKind() == lltok::lparen);
1510 Lex.Lex(); // eat the (.
1512 if (Lex.getKind() == lltok::rparen) {
1514 } else if (Lex.getKind() == lltok::dotdotdot) {
1518 LocTy TypeLoc = Lex.getLoc();
1519 PATypeHolder ArgTy(Type::getVoidTy(Context));
1523 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1524 // types (such as a function returning a pointer to itself). If parsing a
1525 // function prototype, we require fully resolved types.
1526 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1527 ParseOptionalAttrs(Attrs, 0)) return true;
1529 if (ArgTy->isVoidTy())
1530 return Error(TypeLoc, "argument can not have void type");
1532 if (Lex.getKind() == lltok::LocalVar ||
1533 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1534 Name = Lex.getStrVal();
1538 if (!FunctionType::isValidArgumentType(ArgTy))
1539 return Error(TypeLoc, "invalid type for function argument");
1541 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1543 while (EatIfPresent(lltok::comma)) {
1544 // Handle ... at end of arg list.
1545 if (EatIfPresent(lltok::dotdotdot)) {
1550 // Otherwise must be an argument type.
1551 TypeLoc = Lex.getLoc();
1552 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1553 ParseOptionalAttrs(Attrs, 0)) return true;
1555 if (ArgTy->isVoidTy())
1556 return Error(TypeLoc, "argument can not have void type");
1558 if (Lex.getKind() == lltok::LocalVar ||
1559 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1560 Name = Lex.getStrVal();
1566 if (!ArgTy->isFirstClassType() && !ArgTy->isOpaqueTy())
1567 return Error(TypeLoc, "invalid type for function argument");
1569 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1573 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1576 /// ParseFunctionType
1577 /// ::= Type ArgumentList OptionalAttrs
1578 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1579 assert(Lex.getKind() == lltok::lparen);
1581 if (!FunctionType::isValidReturnType(Result))
1582 return TokError("invalid function return type");
1584 std::vector<ArgInfo> ArgList;
1587 if (ParseArgumentList(ArgList, isVarArg, true) ||
1588 // FIXME: Allow, but ignore attributes on function types!
1589 // FIXME: Remove in LLVM 3.0
1590 ParseOptionalAttrs(Attrs, 2))
1593 // Reject names on the arguments lists.
1594 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1595 if (!ArgList[i].Name.empty())
1596 return Error(ArgList[i].Loc, "argument name invalid in function type");
1597 if (!ArgList[i].Attrs != 0) {
1598 // Allow but ignore attributes on function types; this permits
1600 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1604 std::vector<const Type*> ArgListTy;
1605 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1606 ArgListTy.push_back(ArgList[i].Type);
1608 Result = HandleUpRefs(FunctionType::get(Result.get(),
1609 ArgListTy, isVarArg));
1613 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1616 /// ::= '{' TypeRec (',' TypeRec)* '}'
1617 /// ::= '<' '{' '}' '>'
1618 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1619 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1620 assert(Lex.getKind() == lltok::lbrace);
1621 Lex.Lex(); // Consume the '{'
1623 if (EatIfPresent(lltok::rbrace)) {
1624 Result = StructType::get(Context, Packed);
1628 std::vector<PATypeHolder> ParamsList;
1629 LocTy EltTyLoc = Lex.getLoc();
1630 if (ParseTypeRec(Result)) return true;
1631 ParamsList.push_back(Result);
1633 if (Result->isVoidTy())
1634 return Error(EltTyLoc, "struct element can not have void type");
1635 if (!StructType::isValidElementType(Result))
1636 return Error(EltTyLoc, "invalid element type for struct");
1638 while (EatIfPresent(lltok::comma)) {
1639 EltTyLoc = Lex.getLoc();
1640 if (ParseTypeRec(Result)) return true;
1642 if (Result->isVoidTy())
1643 return Error(EltTyLoc, "struct element can not have void type");
1644 if (!StructType::isValidElementType(Result))
1645 return Error(EltTyLoc, "invalid element type for struct");
1647 ParamsList.push_back(Result);
1650 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1653 std::vector<const Type*> ParamsListTy;
1654 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1655 ParamsListTy.push_back(ParamsList[i].get());
1656 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1662 /// ::= 'union' '{' TypeRec (',' TypeRec)* '}'
1663 bool LLParser::ParseUnionType(PATypeHolder &Result) {
1664 assert(Lex.getKind() == lltok::kw_union);
1665 Lex.Lex(); // Consume the 'union'
1667 if (ParseToken(lltok::lbrace, "'{' expected after 'union'")) return true;
1669 SmallVector<PATypeHolder, 8> ParamsList;
1671 LocTy EltTyLoc = Lex.getLoc();
1672 if (ParseTypeRec(Result)) return true;
1673 ParamsList.push_back(Result);
1675 if (Result->isVoidTy())
1676 return Error(EltTyLoc, "union element can not have void type");
1677 if (!UnionType::isValidElementType(Result))
1678 return Error(EltTyLoc, "invalid element type for union");
1680 } while (EatIfPresent(lltok::comma)) ;
1682 if (ParseToken(lltok::rbrace, "expected '}' at end of union"))
1685 SmallVector<const Type*, 8> ParamsListTy;
1686 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1687 ParamsListTy.push_back(ParamsList[i].get());
1688 Result = HandleUpRefs(UnionType::get(&ParamsListTy[0], ParamsListTy.size()));
1692 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1693 /// token has already been consumed.
1695 /// ::= '[' APSINTVAL 'x' Types ']'
1696 /// ::= '<' APSINTVAL 'x' Types '>'
1697 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1698 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1699 Lex.getAPSIntVal().getBitWidth() > 64)
1700 return TokError("expected number in address space");
1702 LocTy SizeLoc = Lex.getLoc();
1703 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1706 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1709 LocTy TypeLoc = Lex.getLoc();
1710 PATypeHolder EltTy(Type::getVoidTy(Context));
1711 if (ParseTypeRec(EltTy)) return true;
1713 if (EltTy->isVoidTy())
1714 return Error(TypeLoc, "array and vector element type cannot be void");
1716 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1717 "expected end of sequential type"))
1722 return Error(SizeLoc, "zero element vector is illegal");
1723 if ((unsigned)Size != Size)
1724 return Error(SizeLoc, "size too large for vector");
1725 if (!VectorType::isValidElementType(EltTy))
1726 return Error(TypeLoc, "vector element type must be fp or integer");
1727 Result = VectorType::get(EltTy, unsigned(Size));
1729 if (!ArrayType::isValidElementType(EltTy))
1730 return Error(TypeLoc, "invalid array element type");
1731 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1736 //===----------------------------------------------------------------------===//
1737 // Function Semantic Analysis.
1738 //===----------------------------------------------------------------------===//
1740 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1742 : P(p), F(f), FunctionNumber(functionNumber) {
1744 // Insert unnamed arguments into the NumberedVals list.
1745 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1748 NumberedVals.push_back(AI);
1751 LLParser::PerFunctionState::~PerFunctionState() {
1752 // If there were any forward referenced non-basicblock values, delete them.
1753 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1754 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1755 if (!isa<BasicBlock>(I->second.first)) {
1756 I->second.first->replaceAllUsesWith(
1757 UndefValue::get(I->second.first->getType()));
1758 delete I->second.first;
1759 I->second.first = 0;
1762 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1763 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1764 if (!isa<BasicBlock>(I->second.first)) {
1765 I->second.first->replaceAllUsesWith(
1766 UndefValue::get(I->second.first->getType()));
1767 delete I->second.first;
1768 I->second.first = 0;
1772 bool LLParser::PerFunctionState::FinishFunction() {
1773 // Check to see if someone took the address of labels in this block.
1774 if (!P.ForwardRefBlockAddresses.empty()) {
1776 if (!F.getName().empty()) {
1777 FunctionID.Kind = ValID::t_GlobalName;
1778 FunctionID.StrVal = F.getName();
1780 FunctionID.Kind = ValID::t_GlobalID;
1781 FunctionID.UIntVal = FunctionNumber;
1784 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1785 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1786 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1787 // Resolve all these references.
1788 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1791 P.ForwardRefBlockAddresses.erase(FRBAI);
1795 if (!ForwardRefVals.empty())
1796 return P.Error(ForwardRefVals.begin()->second.second,
1797 "use of undefined value '%" + ForwardRefVals.begin()->first +
1799 if (!ForwardRefValIDs.empty())
1800 return P.Error(ForwardRefValIDs.begin()->second.second,
1801 "use of undefined value '%" +
1802 utostr(ForwardRefValIDs.begin()->first) + "'");
1807 /// GetVal - Get a value with the specified name or ID, creating a
1808 /// forward reference record if needed. This can return null if the value
1809 /// exists but does not have the right type.
1810 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1811 const Type *Ty, LocTy Loc) {
1812 // Look this name up in the normal function symbol table.
1813 Value *Val = F.getValueSymbolTable().lookup(Name);
1815 // If this is a forward reference for the value, see if we already created a
1816 // forward ref record.
1818 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1819 I = ForwardRefVals.find(Name);
1820 if (I != ForwardRefVals.end())
1821 Val = I->second.first;
1824 // If we have the value in the symbol table or fwd-ref table, return it.
1826 if (Val->getType() == Ty) return Val;
1827 if (Ty->isLabelTy())
1828 P.Error(Loc, "'%" + Name + "' is not a basic block");
1830 P.Error(Loc, "'%" + Name + "' defined with type '" +
1831 Val->getType()->getDescription() + "'");
1835 // Don't make placeholders with invalid type.
1836 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1837 P.Error(Loc, "invalid use of a non-first-class type");
1841 // Otherwise, create a new forward reference for this value and remember it.
1843 if (Ty->isLabelTy())
1844 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1846 FwdVal = new Argument(Ty, Name);
1848 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1852 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1854 // Look this name up in the normal function symbol table.
1855 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1857 // If this is a forward reference for the value, see if we already created a
1858 // forward ref record.
1860 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1861 I = ForwardRefValIDs.find(ID);
1862 if (I != ForwardRefValIDs.end())
1863 Val = I->second.first;
1866 // If we have the value in the symbol table or fwd-ref table, return it.
1868 if (Val->getType() == Ty) return Val;
1869 if (Ty->isLabelTy())
1870 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1872 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1873 Val->getType()->getDescription() + "'");
1877 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1878 P.Error(Loc, "invalid use of a non-first-class type");
1882 // Otherwise, create a new forward reference for this value and remember it.
1884 if (Ty->isLabelTy())
1885 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1887 FwdVal = new Argument(Ty);
1889 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1893 /// SetInstName - After an instruction is parsed and inserted into its
1894 /// basic block, this installs its name.
1895 bool LLParser::PerFunctionState::SetInstName(int NameID,
1896 const std::string &NameStr,
1897 LocTy NameLoc, Instruction *Inst) {
1898 // If this instruction has void type, it cannot have a name or ID specified.
1899 if (Inst->getType()->isVoidTy()) {
1900 if (NameID != -1 || !NameStr.empty())
1901 return P.Error(NameLoc, "instructions returning void cannot have a name");
1905 // If this was a numbered instruction, verify that the instruction is the
1906 // expected value and resolve any forward references.
1907 if (NameStr.empty()) {
1908 // If neither a name nor an ID was specified, just use the next ID.
1910 NameID = NumberedVals.size();
1912 if (unsigned(NameID) != NumberedVals.size())
1913 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1914 utostr(NumberedVals.size()) + "'");
1916 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1917 ForwardRefValIDs.find(NameID);
1918 if (FI != ForwardRefValIDs.end()) {
1919 if (FI->second.first->getType() != Inst->getType())
1920 return P.Error(NameLoc, "instruction forward referenced with type '" +
1921 FI->second.first->getType()->getDescription() + "'");
1922 FI->second.first->replaceAllUsesWith(Inst);
1923 delete FI->second.first;
1924 ForwardRefValIDs.erase(FI);
1927 NumberedVals.push_back(Inst);
1931 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1932 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1933 FI = ForwardRefVals.find(NameStr);
1934 if (FI != ForwardRefVals.end()) {
1935 if (FI->second.first->getType() != Inst->getType())
1936 return P.Error(NameLoc, "instruction forward referenced with type '" +
1937 FI->second.first->getType()->getDescription() + "'");
1938 FI->second.first->replaceAllUsesWith(Inst);
1939 delete FI->second.first;
1940 ForwardRefVals.erase(FI);
1943 // Set the name on the instruction.
1944 Inst->setName(NameStr);
1946 if (Inst->getNameStr() != NameStr)
1947 return P.Error(NameLoc, "multiple definition of local value named '" +
1952 /// GetBB - Get a basic block with the specified name or ID, creating a
1953 /// forward reference record if needed.
1954 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1956 return cast_or_null<BasicBlock>(GetVal(Name,
1957 Type::getLabelTy(F.getContext()), Loc));
1960 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1961 return cast_or_null<BasicBlock>(GetVal(ID,
1962 Type::getLabelTy(F.getContext()), Loc));
1965 /// DefineBB - Define the specified basic block, which is either named or
1966 /// unnamed. If there is an error, this returns null otherwise it returns
1967 /// the block being defined.
1968 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1972 BB = GetBB(NumberedVals.size(), Loc);
1974 BB = GetBB(Name, Loc);
1975 if (BB == 0) return 0; // Already diagnosed error.
1977 // Move the block to the end of the function. Forward ref'd blocks are
1978 // inserted wherever they happen to be referenced.
1979 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1981 // Remove the block from forward ref sets.
1983 ForwardRefValIDs.erase(NumberedVals.size());
1984 NumberedVals.push_back(BB);
1986 // BB forward references are already in the function symbol table.
1987 ForwardRefVals.erase(Name);
1993 //===----------------------------------------------------------------------===//
1995 //===----------------------------------------------------------------------===//
1997 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1998 /// type implied. For example, if we parse "4" we don't know what integer type
1999 /// it has. The value will later be combined with its type and checked for
2000 /// sanity. PFS is used to convert function-local operands of metadata (since
2001 /// metadata operands are not just parsed here but also converted to values).
2002 /// PFS can be null when we are not parsing metadata values inside a function.
2003 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2004 ID.Loc = Lex.getLoc();
2005 switch (Lex.getKind()) {
2006 default: return TokError("expected value token");
2007 case lltok::GlobalID: // @42
2008 ID.UIntVal = Lex.getUIntVal();
2009 ID.Kind = ValID::t_GlobalID;
2011 case lltok::GlobalVar: // @foo
2012 ID.StrVal = Lex.getStrVal();
2013 ID.Kind = ValID::t_GlobalName;
2015 case lltok::LocalVarID: // %42
2016 ID.UIntVal = Lex.getUIntVal();
2017 ID.Kind = ValID::t_LocalID;
2019 case lltok::LocalVar: // %foo
2020 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
2021 ID.StrVal = Lex.getStrVal();
2022 ID.Kind = ValID::t_LocalName;
2024 case lltok::exclaim: // !{...} MDNode, !"foo" MDString
2027 if (EatIfPresent(lltok::lbrace)) {
2028 SmallVector<Value*, 16> Elts;
2029 if (ParseMDNodeVector(Elts, PFS) ||
2030 ParseToken(lltok::rbrace, "expected end of metadata node"))
2033 ID.MDNodeVal = MDNode::get(Context, Elts.data(), Elts.size());
2034 ID.Kind = ValID::t_MDNode;
2038 // Standalone metadata reference
2039 // !{ ..., !42, ... }
2040 if (Lex.getKind() == lltok::APSInt) {
2041 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2042 ID.Kind = ValID::t_MDNode;
2047 // ::= '!' STRINGCONSTANT
2048 if (ParseMDString(ID.MDStringVal)) return true;
2049 ID.Kind = ValID::t_MDString;
2052 ID.APSIntVal = Lex.getAPSIntVal();
2053 ID.Kind = ValID::t_APSInt;
2055 case lltok::APFloat:
2056 ID.APFloatVal = Lex.getAPFloatVal();
2057 ID.Kind = ValID::t_APFloat;
2059 case lltok::kw_true:
2060 ID.ConstantVal = ConstantInt::getTrue(Context);
2061 ID.Kind = ValID::t_Constant;
2063 case lltok::kw_false:
2064 ID.ConstantVal = ConstantInt::getFalse(Context);
2065 ID.Kind = ValID::t_Constant;
2067 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2068 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2069 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2071 case lltok::lbrace: {
2072 // ValID ::= '{' ConstVector '}'
2074 SmallVector<Constant*, 16> Elts;
2075 if (ParseGlobalValueVector(Elts) ||
2076 ParseToken(lltok::rbrace, "expected end of struct constant"))
2079 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
2080 Elts.size(), false);
2081 ID.Kind = ValID::t_Constant;
2085 // ValID ::= '<' ConstVector '>' --> Vector.
2086 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2088 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2090 SmallVector<Constant*, 16> Elts;
2091 LocTy FirstEltLoc = Lex.getLoc();
2092 if (ParseGlobalValueVector(Elts) ||
2094 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2095 ParseToken(lltok::greater, "expected end of constant"))
2098 if (isPackedStruct) {
2100 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
2101 ID.Kind = ValID::t_Constant;
2106 return Error(ID.Loc, "constant vector must not be empty");
2108 if (!Elts[0]->getType()->isIntegerTy() &&
2109 !Elts[0]->getType()->isFloatingPointTy())
2110 return Error(FirstEltLoc,
2111 "vector elements must have integer or floating point type");
2113 // Verify that all the vector elements have the same type.
2114 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2115 if (Elts[i]->getType() != Elts[0]->getType())
2116 return Error(FirstEltLoc,
2117 "vector element #" + utostr(i) +
2118 " is not of type '" + Elts[0]->getType()->getDescription());
2120 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
2121 ID.Kind = ValID::t_Constant;
2124 case lltok::lsquare: { // Array Constant
2126 SmallVector<Constant*, 16> Elts;
2127 LocTy FirstEltLoc = Lex.getLoc();
2128 if (ParseGlobalValueVector(Elts) ||
2129 ParseToken(lltok::rsquare, "expected end of array constant"))
2132 // Handle empty element.
2134 // Use undef instead of an array because it's inconvenient to determine
2135 // the element type at this point, there being no elements to examine.
2136 ID.Kind = ValID::t_EmptyArray;
2140 if (!Elts[0]->getType()->isFirstClassType())
2141 return Error(FirstEltLoc, "invalid array element type: " +
2142 Elts[0]->getType()->getDescription());
2144 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2146 // Verify all elements are correct type!
2147 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2148 if (Elts[i]->getType() != Elts[0]->getType())
2149 return Error(FirstEltLoc,
2150 "array element #" + utostr(i) +
2151 " is not of type '" +Elts[0]->getType()->getDescription());
2154 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
2155 ID.Kind = ValID::t_Constant;
2158 case lltok::kw_c: // c "foo"
2160 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
2161 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2162 ID.Kind = ValID::t_Constant;
2165 case lltok::kw_asm: {
2166 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2167 bool HasSideEffect, AlignStack;
2169 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2170 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2171 ParseStringConstant(ID.StrVal) ||
2172 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2173 ParseToken(lltok::StringConstant, "expected constraint string"))
2175 ID.StrVal2 = Lex.getStrVal();
2176 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2177 ID.Kind = ValID::t_InlineAsm;
2181 case lltok::kw_blockaddress: {
2182 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2186 LocTy FnLoc, LabelLoc;
2188 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2190 ParseToken(lltok::comma, "expected comma in block address expression")||
2191 ParseValID(Label) ||
2192 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2195 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2196 return Error(Fn.Loc, "expected function name in blockaddress");
2197 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2198 return Error(Label.Loc, "expected basic block name in blockaddress");
2200 // Make a global variable as a placeholder for this reference.
2201 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2202 false, GlobalValue::InternalLinkage,
2204 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2205 ID.ConstantVal = FwdRef;
2206 ID.Kind = ValID::t_Constant;
2210 case lltok::kw_trunc:
2211 case lltok::kw_zext:
2212 case lltok::kw_sext:
2213 case lltok::kw_fptrunc:
2214 case lltok::kw_fpext:
2215 case lltok::kw_bitcast:
2216 case lltok::kw_uitofp:
2217 case lltok::kw_sitofp:
2218 case lltok::kw_fptoui:
2219 case lltok::kw_fptosi:
2220 case lltok::kw_inttoptr:
2221 case lltok::kw_ptrtoint: {
2222 unsigned Opc = Lex.getUIntVal();
2223 PATypeHolder DestTy(Type::getVoidTy(Context));
2226 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2227 ParseGlobalTypeAndValue(SrcVal) ||
2228 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2229 ParseType(DestTy) ||
2230 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2232 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2233 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2234 SrcVal->getType()->getDescription() + "' to '" +
2235 DestTy->getDescription() + "'");
2236 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2238 ID.Kind = ValID::t_Constant;
2241 case lltok::kw_extractvalue: {
2244 SmallVector<unsigned, 4> Indices;
2245 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2246 ParseGlobalTypeAndValue(Val) ||
2247 ParseIndexList(Indices) ||
2248 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2251 if (!Val->getType()->isAggregateType())
2252 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2253 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
2255 return Error(ID.Loc, "invalid indices for extractvalue");
2257 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
2258 ID.Kind = ValID::t_Constant;
2261 case lltok::kw_insertvalue: {
2263 Constant *Val0, *Val1;
2264 SmallVector<unsigned, 4> Indices;
2265 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2266 ParseGlobalTypeAndValue(Val0) ||
2267 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2268 ParseGlobalTypeAndValue(Val1) ||
2269 ParseIndexList(Indices) ||
2270 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2272 if (!Val0->getType()->isAggregateType())
2273 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2274 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
2276 return Error(ID.Loc, "invalid indices for insertvalue");
2277 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
2278 Indices.data(), Indices.size());
2279 ID.Kind = ValID::t_Constant;
2282 case lltok::kw_icmp:
2283 case lltok::kw_fcmp: {
2284 unsigned PredVal, Opc = Lex.getUIntVal();
2285 Constant *Val0, *Val1;
2287 if (ParseCmpPredicate(PredVal, Opc) ||
2288 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2289 ParseGlobalTypeAndValue(Val0) ||
2290 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2291 ParseGlobalTypeAndValue(Val1) ||
2292 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2295 if (Val0->getType() != Val1->getType())
2296 return Error(ID.Loc, "compare operands must have the same type");
2298 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2300 if (Opc == Instruction::FCmp) {
2301 if (!Val0->getType()->isFPOrFPVectorTy())
2302 return Error(ID.Loc, "fcmp requires floating point operands");
2303 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2305 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2306 if (!Val0->getType()->isIntOrIntVectorTy() &&
2307 !Val0->getType()->isPointerTy())
2308 return Error(ID.Loc, "icmp requires pointer or integer operands");
2309 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2311 ID.Kind = ValID::t_Constant;
2315 // Binary Operators.
2317 case lltok::kw_fadd:
2319 case lltok::kw_fsub:
2321 case lltok::kw_fmul:
2322 case lltok::kw_udiv:
2323 case lltok::kw_sdiv:
2324 case lltok::kw_fdiv:
2325 case lltok::kw_urem:
2326 case lltok::kw_srem:
2327 case lltok::kw_frem: {
2331 unsigned Opc = Lex.getUIntVal();
2332 Constant *Val0, *Val1;
2334 LocTy ModifierLoc = Lex.getLoc();
2335 if (Opc == Instruction::Add ||
2336 Opc == Instruction::Sub ||
2337 Opc == Instruction::Mul) {
2338 if (EatIfPresent(lltok::kw_nuw))
2340 if (EatIfPresent(lltok::kw_nsw)) {
2342 if (EatIfPresent(lltok::kw_nuw))
2345 } else if (Opc == Instruction::SDiv) {
2346 if (EatIfPresent(lltok::kw_exact))
2349 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2350 ParseGlobalTypeAndValue(Val0) ||
2351 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2352 ParseGlobalTypeAndValue(Val1) ||
2353 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2355 if (Val0->getType() != Val1->getType())
2356 return Error(ID.Loc, "operands of constexpr must have same type");
2357 if (!Val0->getType()->isIntOrIntVectorTy()) {
2359 return Error(ModifierLoc, "nuw only applies to integer operations");
2361 return Error(ModifierLoc, "nsw only applies to integer operations");
2363 // Check that the type is valid for the operator.
2365 case Instruction::Add:
2366 case Instruction::Sub:
2367 case Instruction::Mul:
2368 case Instruction::UDiv:
2369 case Instruction::SDiv:
2370 case Instruction::URem:
2371 case Instruction::SRem:
2372 if (!Val0->getType()->isIntOrIntVectorTy())
2373 return Error(ID.Loc, "constexpr requires integer operands");
2375 case Instruction::FAdd:
2376 case Instruction::FSub:
2377 case Instruction::FMul:
2378 case Instruction::FDiv:
2379 case Instruction::FRem:
2380 if (!Val0->getType()->isFPOrFPVectorTy())
2381 return Error(ID.Loc, "constexpr requires fp operands");
2383 default: llvm_unreachable("Unknown binary operator!");
2386 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2387 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2388 if (Exact) Flags |= SDivOperator::IsExact;
2389 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2391 ID.Kind = ValID::t_Constant;
2395 // Logical Operations
2397 case lltok::kw_lshr:
2398 case lltok::kw_ashr:
2401 case lltok::kw_xor: {
2402 unsigned Opc = Lex.getUIntVal();
2403 Constant *Val0, *Val1;
2405 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2406 ParseGlobalTypeAndValue(Val0) ||
2407 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2408 ParseGlobalTypeAndValue(Val1) ||
2409 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2411 if (Val0->getType() != Val1->getType())
2412 return Error(ID.Loc, "operands of constexpr must have same type");
2413 if (!Val0->getType()->isIntOrIntVectorTy())
2414 return Error(ID.Loc,
2415 "constexpr requires integer or integer vector operands");
2416 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2417 ID.Kind = ValID::t_Constant;
2421 case lltok::kw_getelementptr:
2422 case lltok::kw_shufflevector:
2423 case lltok::kw_insertelement:
2424 case lltok::kw_extractelement:
2425 case lltok::kw_select: {
2426 unsigned Opc = Lex.getUIntVal();
2427 SmallVector<Constant*, 16> Elts;
2428 bool InBounds = false;
2430 if (Opc == Instruction::GetElementPtr)
2431 InBounds = EatIfPresent(lltok::kw_inbounds);
2432 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2433 ParseGlobalValueVector(Elts) ||
2434 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2437 if (Opc == Instruction::GetElementPtr) {
2438 if (Elts.size() == 0 || !Elts[0]->getType()->isPointerTy())
2439 return Error(ID.Loc, "getelementptr requires pointer operand");
2441 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2442 (Value**)(Elts.data() + 1),
2444 return Error(ID.Loc, "invalid indices for getelementptr");
2445 ID.ConstantVal = InBounds ?
2446 ConstantExpr::getInBoundsGetElementPtr(Elts[0],
2449 ConstantExpr::getGetElementPtr(Elts[0],
2450 Elts.data() + 1, Elts.size() - 1);
2451 } else if (Opc == Instruction::Select) {
2452 if (Elts.size() != 3)
2453 return Error(ID.Loc, "expected three operands to select");
2454 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2456 return Error(ID.Loc, Reason);
2457 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2458 } else if (Opc == Instruction::ShuffleVector) {
2459 if (Elts.size() != 3)
2460 return Error(ID.Loc, "expected three operands to shufflevector");
2461 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2462 return Error(ID.Loc, "invalid operands to shufflevector");
2464 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2465 } else if (Opc == Instruction::ExtractElement) {
2466 if (Elts.size() != 2)
2467 return Error(ID.Loc, "expected two operands to extractelement");
2468 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2469 return Error(ID.Loc, "invalid extractelement operands");
2470 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2472 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2473 if (Elts.size() != 3)
2474 return Error(ID.Loc, "expected three operands to insertelement");
2475 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2476 return Error(ID.Loc, "invalid insertelement operands");
2478 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2481 ID.Kind = ValID::t_Constant;
2490 /// ParseGlobalValue - Parse a global value with the specified type.
2491 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&C) {
2495 bool Parsed = ParseValID(ID) ||
2496 ConvertValIDToValue(Ty, ID, V, NULL);
2497 if (V && !(C = dyn_cast<Constant>(V)))
2498 return Error(ID.Loc, "global values must be constants");
2502 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2503 PATypeHolder Type(Type::getVoidTy(Context));
2504 return ParseType(Type) ||
2505 ParseGlobalValue(Type, V);
2508 /// ParseGlobalValueVector
2510 /// ::= TypeAndValue (',' TypeAndValue)*
2511 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2513 if (Lex.getKind() == lltok::rbrace ||
2514 Lex.getKind() == lltok::rsquare ||
2515 Lex.getKind() == lltok::greater ||
2516 Lex.getKind() == lltok::rparen)
2520 if (ParseGlobalTypeAndValue(C)) return true;
2523 while (EatIfPresent(lltok::comma)) {
2524 if (ParseGlobalTypeAndValue(C)) return true;
2532 //===----------------------------------------------------------------------===//
2533 // Function Parsing.
2534 //===----------------------------------------------------------------------===//
2536 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2537 PerFunctionState *PFS) {
2538 if (Ty->isFunctionTy())
2539 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2542 default: llvm_unreachable("Unknown ValID!");
2543 case ValID::t_LocalID:
2544 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2545 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2547 case ValID::t_LocalName:
2548 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2549 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2551 case ValID::t_InlineAsm: {
2552 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2553 const FunctionType *FTy =
2554 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2555 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2556 return Error(ID.Loc, "invalid type for inline asm constraint string");
2557 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2560 case ValID::t_MDNode:
2561 if (!Ty->isMetadataTy())
2562 return Error(ID.Loc, "metadata value must have metadata type");
2565 case ValID::t_MDString:
2566 if (!Ty->isMetadataTy())
2567 return Error(ID.Loc, "metadata value must have metadata type");
2570 case ValID::t_GlobalName:
2571 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2573 case ValID::t_GlobalID:
2574 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2576 case ValID::t_APSInt:
2577 if (!Ty->isIntegerTy())
2578 return Error(ID.Loc, "integer constant must have integer type");
2579 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2580 V = ConstantInt::get(Context, ID.APSIntVal);
2582 case ValID::t_APFloat:
2583 if (!Ty->isFloatingPointTy() ||
2584 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2585 return Error(ID.Loc, "floating point constant invalid for type");
2587 // The lexer has no type info, so builds all float and double FP constants
2588 // as double. Fix this here. Long double does not need this.
2589 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2592 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2595 V = ConstantFP::get(Context, ID.APFloatVal);
2597 if (V->getType() != Ty)
2598 return Error(ID.Loc, "floating point constant does not have type '" +
2599 Ty->getDescription() + "'");
2603 if (!Ty->isPointerTy())
2604 return Error(ID.Loc, "null must be a pointer type");
2605 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2607 case ValID::t_Undef:
2608 // FIXME: LabelTy should not be a first-class type.
2609 if ((!Ty->isFirstClassType() || Ty->isLabelTy()) &&
2611 return Error(ID.Loc, "invalid type for undef constant");
2612 V = UndefValue::get(Ty);
2614 case ValID::t_EmptyArray:
2615 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2616 return Error(ID.Loc, "invalid empty array initializer");
2617 V = UndefValue::get(Ty);
2620 // FIXME: LabelTy should not be a first-class type.
2621 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2622 return Error(ID.Loc, "invalid type for null constant");
2623 V = Constant::getNullValue(Ty);
2625 case ValID::t_Constant:
2626 if (ID.ConstantVal->getType() != Ty) {
2627 // Allow a constant struct with a single member to be converted
2628 // to a union, if the union has a member which is the same type
2629 // as the struct member.
2630 if (const UnionType* utype = dyn_cast<UnionType>(Ty)) {
2631 return ParseUnionValue(utype, ID, V);
2634 return Error(ID.Loc, "constant expression type mismatch");
2642 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2645 return ParseValID(ID, &PFS) ||
2646 ConvertValIDToValue(Ty, ID, V, &PFS);
2649 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2650 PATypeHolder T(Type::getVoidTy(Context));
2651 return ParseType(T) ||
2652 ParseValue(T, V, PFS);
2655 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2656 PerFunctionState &PFS) {
2659 if (ParseTypeAndValue(V, PFS)) return true;
2660 if (!isa<BasicBlock>(V))
2661 return Error(Loc, "expected a basic block");
2662 BB = cast<BasicBlock>(V);
2666 bool LLParser::ParseUnionValue(const UnionType* utype, ValID &ID, Value *&V) {
2667 if (const StructType* stype = dyn_cast<StructType>(ID.ConstantVal->getType())) {
2668 if (stype->getNumContainedTypes() != 1)
2669 return Error(ID.Loc, "constant expression type mismatch");
2670 int index = utype->getElementTypeIndex(stype->getContainedType(0));
2672 return Error(ID.Loc, "initializer type is not a member of the union");
2674 V = ConstantUnion::get(
2675 utype, cast<Constant>(ID.ConstantVal->getOperand(0)));
2679 return Error(ID.Loc, "constant expression type mismatch");
2684 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2685 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2686 /// OptionalAlign OptGC
2687 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2688 // Parse the linkage.
2689 LocTy LinkageLoc = Lex.getLoc();
2692 unsigned Visibility, RetAttrs;
2694 PATypeHolder RetType(Type::getVoidTy(Context));
2695 LocTy RetTypeLoc = Lex.getLoc();
2696 if (ParseOptionalLinkage(Linkage) ||
2697 ParseOptionalVisibility(Visibility) ||
2698 ParseOptionalCallingConv(CC) ||
2699 ParseOptionalAttrs(RetAttrs, 1) ||
2700 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2703 // Verify that the linkage is ok.
2704 switch ((GlobalValue::LinkageTypes)Linkage) {
2705 case GlobalValue::ExternalLinkage:
2706 break; // always ok.
2707 case GlobalValue::DLLImportLinkage:
2708 case GlobalValue::ExternalWeakLinkage:
2710 return Error(LinkageLoc, "invalid linkage for function definition");
2712 case GlobalValue::PrivateLinkage:
2713 case GlobalValue::LinkerPrivateLinkage:
2714 case GlobalValue::LinkerPrivateWeakLinkage:
2715 case GlobalValue::InternalLinkage:
2716 case GlobalValue::AvailableExternallyLinkage:
2717 case GlobalValue::LinkOnceAnyLinkage:
2718 case GlobalValue::LinkOnceODRLinkage:
2719 case GlobalValue::WeakAnyLinkage:
2720 case GlobalValue::WeakODRLinkage:
2721 case GlobalValue::DLLExportLinkage:
2723 return Error(LinkageLoc, "invalid linkage for function declaration");
2725 case GlobalValue::AppendingLinkage:
2726 case GlobalValue::CommonLinkage:
2727 return Error(LinkageLoc, "invalid function linkage type");
2730 if (!FunctionType::isValidReturnType(RetType) ||
2731 RetType->isOpaqueTy())
2732 return Error(RetTypeLoc, "invalid function return type");
2734 LocTy NameLoc = Lex.getLoc();
2736 std::string FunctionName;
2737 if (Lex.getKind() == lltok::GlobalVar) {
2738 FunctionName = Lex.getStrVal();
2739 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2740 unsigned NameID = Lex.getUIntVal();
2742 if (NameID != NumberedVals.size())
2743 return TokError("function expected to be numbered '%" +
2744 utostr(NumberedVals.size()) + "'");
2746 return TokError("expected function name");
2751 if (Lex.getKind() != lltok::lparen)
2752 return TokError("expected '(' in function argument list");
2754 std::vector<ArgInfo> ArgList;
2757 std::string Section;
2761 if (ParseArgumentList(ArgList, isVarArg, false) ||
2762 ParseOptionalAttrs(FuncAttrs, 2) ||
2763 (EatIfPresent(lltok::kw_section) &&
2764 ParseStringConstant(Section)) ||
2765 ParseOptionalAlignment(Alignment) ||
2766 (EatIfPresent(lltok::kw_gc) &&
2767 ParseStringConstant(GC)))
2770 // If the alignment was parsed as an attribute, move to the alignment field.
2771 if (FuncAttrs & Attribute::Alignment) {
2772 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2773 FuncAttrs &= ~Attribute::Alignment;
2776 // Okay, if we got here, the function is syntactically valid. Convert types
2777 // and do semantic checks.
2778 std::vector<const Type*> ParamTypeList;
2779 SmallVector<AttributeWithIndex, 8> Attrs;
2780 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2782 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2783 if (FuncAttrs & ObsoleteFuncAttrs) {
2784 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2785 FuncAttrs &= ~ObsoleteFuncAttrs;
2788 if (RetAttrs != Attribute::None)
2789 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2791 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2792 ParamTypeList.push_back(ArgList[i].Type);
2793 if (ArgList[i].Attrs != Attribute::None)
2794 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2797 if (FuncAttrs != Attribute::None)
2798 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2800 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2802 if (PAL.paramHasAttr(1, Attribute::StructRet) && !RetType->isVoidTy())
2803 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2805 const FunctionType *FT =
2806 FunctionType::get(RetType, ParamTypeList, isVarArg);
2807 const PointerType *PFT = PointerType::getUnqual(FT);
2810 if (!FunctionName.empty()) {
2811 // If this was a definition of a forward reference, remove the definition
2812 // from the forward reference table and fill in the forward ref.
2813 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2814 ForwardRefVals.find(FunctionName);
2815 if (FRVI != ForwardRefVals.end()) {
2816 Fn = M->getFunction(FunctionName);
2817 if (Fn->getType() != PFT)
2818 return Error(FRVI->second.second, "invalid forward reference to "
2819 "function '" + FunctionName + "' with wrong type!");
2821 ForwardRefVals.erase(FRVI);
2822 } else if ((Fn = M->getFunction(FunctionName))) {
2823 // If this function already exists in the symbol table, then it is
2824 // multiply defined. We accept a few cases for old backwards compat.
2825 // FIXME: Remove this stuff for LLVM 3.0.
2826 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2827 (!Fn->isDeclaration() && isDefine)) {
2828 // If the redefinition has different type or different attributes,
2829 // reject it. If both have bodies, reject it.
2830 return Error(NameLoc, "invalid redefinition of function '" +
2831 FunctionName + "'");
2832 } else if (Fn->isDeclaration()) {
2833 // Make sure to strip off any argument names so we can't get conflicts.
2834 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2838 } else if (M->getNamedValue(FunctionName)) {
2839 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2843 // If this is a definition of a forward referenced function, make sure the
2845 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2846 = ForwardRefValIDs.find(NumberedVals.size());
2847 if (I != ForwardRefValIDs.end()) {
2848 Fn = cast<Function>(I->second.first);
2849 if (Fn->getType() != PFT)
2850 return Error(NameLoc, "type of definition and forward reference of '@" +
2851 utostr(NumberedVals.size()) +"' disagree");
2852 ForwardRefValIDs.erase(I);
2857 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2858 else // Move the forward-reference to the correct spot in the module.
2859 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2861 if (FunctionName.empty())
2862 NumberedVals.push_back(Fn);
2864 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2865 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2866 Fn->setCallingConv(CC);
2867 Fn->setAttributes(PAL);
2868 Fn->setAlignment(Alignment);
2869 Fn->setSection(Section);
2870 if (!GC.empty()) Fn->setGC(GC.c_str());
2872 // Add all of the arguments we parsed to the function.
2873 Function::arg_iterator ArgIt = Fn->arg_begin();
2874 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2875 // If we run out of arguments in the Function prototype, exit early.
2876 // FIXME: REMOVE THIS IN LLVM 3.0, this is just for the mismatch case above.
2877 if (ArgIt == Fn->arg_end()) break;
2879 // If the argument has a name, insert it into the argument symbol table.
2880 if (ArgList[i].Name.empty()) continue;
2882 // Set the name, if it conflicted, it will be auto-renamed.
2883 ArgIt->setName(ArgList[i].Name);
2885 if (ArgIt->getNameStr() != ArgList[i].Name)
2886 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2887 ArgList[i].Name + "'");
2894 /// ParseFunctionBody
2895 /// ::= '{' BasicBlock+ '}'
2896 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2898 bool LLParser::ParseFunctionBody(Function &Fn) {
2899 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2900 return TokError("expected '{' in function body");
2901 Lex.Lex(); // eat the {.
2903 int FunctionNumber = -1;
2904 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2906 PerFunctionState PFS(*this, Fn, FunctionNumber);
2908 // We need at least one basic block.
2909 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_end)
2910 return TokError("function body requires at least one basic block");
2912 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2913 if (ParseBasicBlock(PFS)) return true;
2918 // Verify function is ok.
2919 return PFS.FinishFunction();
2923 /// ::= LabelStr? Instruction*
2924 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2925 // If this basic block starts out with a name, remember it.
2927 LocTy NameLoc = Lex.getLoc();
2928 if (Lex.getKind() == lltok::LabelStr) {
2929 Name = Lex.getStrVal();
2933 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2934 if (BB == 0) return true;
2936 std::string NameStr;
2938 // Parse the instructions in this block until we get a terminator.
2940 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2942 // This instruction may have three possibilities for a name: a) none
2943 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2944 LocTy NameLoc = Lex.getLoc();
2948 if (Lex.getKind() == lltok::LocalVarID) {
2949 NameID = Lex.getUIntVal();
2951 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2953 } else if (Lex.getKind() == lltok::LocalVar ||
2954 // FIXME: REMOVE IN LLVM 3.0
2955 Lex.getKind() == lltok::StringConstant) {
2956 NameStr = Lex.getStrVal();
2958 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2962 switch (ParseInstruction(Inst, BB, PFS)) {
2963 default: assert(0 && "Unknown ParseInstruction result!");
2964 case InstError: return true;
2966 BB->getInstList().push_back(Inst);
2968 // With a normal result, we check to see if the instruction is followed by
2969 // a comma and metadata.
2970 if (EatIfPresent(lltok::comma))
2971 if (ParseInstructionMetadata(Inst))
2974 case InstExtraComma:
2975 BB->getInstList().push_back(Inst);
2977 // If the instruction parser ate an extra comma at the end of it, it
2978 // *must* be followed by metadata.
2979 if (ParseInstructionMetadata(Inst))
2984 // Set the name on the instruction.
2985 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2986 } while (!isa<TerminatorInst>(Inst));
2991 //===----------------------------------------------------------------------===//
2992 // Instruction Parsing.
2993 //===----------------------------------------------------------------------===//
2995 /// ParseInstruction - Parse one of the many different instructions.
2997 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2998 PerFunctionState &PFS) {
2999 lltok::Kind Token = Lex.getKind();
3000 if (Token == lltok::Eof)
3001 return TokError("found end of file when expecting more instructions");
3002 LocTy Loc = Lex.getLoc();
3003 unsigned KeywordVal = Lex.getUIntVal();
3004 Lex.Lex(); // Eat the keyword.
3007 default: return Error(Loc, "expected instruction opcode");
3008 // Terminator Instructions.
3009 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
3010 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3011 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3012 case lltok::kw_br: return ParseBr(Inst, PFS);
3013 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3014 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3015 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3016 // Binary Operators.
3019 case lltok::kw_mul: {
3022 LocTy ModifierLoc = Lex.getLoc();
3023 if (EatIfPresent(lltok::kw_nuw))
3025 if (EatIfPresent(lltok::kw_nsw)) {
3027 if (EatIfPresent(lltok::kw_nuw))
3030 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3032 if (!Inst->getType()->isIntOrIntVectorTy()) {
3034 return Error(ModifierLoc, "nuw only applies to integer operations");
3036 return Error(ModifierLoc, "nsw only applies to integer operations");
3039 cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3041 cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3045 case lltok::kw_fadd:
3046 case lltok::kw_fsub:
3047 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3049 case lltok::kw_sdiv: {
3051 if (EatIfPresent(lltok::kw_exact))
3053 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3056 cast<BinaryOperator>(Inst)->setIsExact(true);
3060 case lltok::kw_udiv:
3061 case lltok::kw_urem:
3062 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3063 case lltok::kw_fdiv:
3064 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3066 case lltok::kw_lshr:
3067 case lltok::kw_ashr:
3070 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3071 case lltok::kw_icmp:
3072 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3074 case lltok::kw_trunc:
3075 case lltok::kw_zext:
3076 case lltok::kw_sext:
3077 case lltok::kw_fptrunc:
3078 case lltok::kw_fpext:
3079 case lltok::kw_bitcast:
3080 case lltok::kw_uitofp:
3081 case lltok::kw_sitofp:
3082 case lltok::kw_fptoui:
3083 case lltok::kw_fptosi:
3084 case lltok::kw_inttoptr:
3085 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3087 case lltok::kw_select: return ParseSelect(Inst, PFS);
3088 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3089 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3090 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3091 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3092 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3093 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3094 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3096 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3097 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, BB, false);
3098 case lltok::kw_free: return ParseFree(Inst, PFS, BB);
3099 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
3100 case lltok::kw_store: return ParseStore(Inst, PFS, false);
3101 case lltok::kw_volatile:
3102 if (EatIfPresent(lltok::kw_load))
3103 return ParseLoad(Inst, PFS, true);
3104 else if (EatIfPresent(lltok::kw_store))
3105 return ParseStore(Inst, PFS, true);
3107 return TokError("expected 'load' or 'store'");
3108 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
3109 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3110 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3111 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3115 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3116 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3117 if (Opc == Instruction::FCmp) {
3118 switch (Lex.getKind()) {
3119 default: TokError("expected fcmp predicate (e.g. 'oeq')");
3120 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3121 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3122 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3123 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3124 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3125 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3126 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3127 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3128 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3129 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3130 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3131 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3132 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3133 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3134 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3135 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3138 switch (Lex.getKind()) {
3139 default: TokError("expected icmp predicate (e.g. 'eq')");
3140 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3141 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3142 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3143 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3144 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3145 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3146 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3147 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3148 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3149 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3156 //===----------------------------------------------------------------------===//
3157 // Terminator Instructions.
3158 //===----------------------------------------------------------------------===//
3160 /// ParseRet - Parse a return instruction.
3161 /// ::= 'ret' void (',' !dbg, !1)*
3162 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3163 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ (',' !dbg, !1)*
3164 /// [[obsolete: LLVM 3.0]]
3165 int LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3166 PerFunctionState &PFS) {
3167 PATypeHolder Ty(Type::getVoidTy(Context));
3168 if (ParseType(Ty, true /*void allowed*/)) return true;
3170 if (Ty->isVoidTy()) {
3171 Inst = ReturnInst::Create(Context);
3176 if (ParseValue(Ty, RV, PFS)) return true;
3178 bool ExtraComma = false;
3179 if (EatIfPresent(lltok::comma)) {
3180 // Parse optional custom metadata, e.g. !dbg
3181 if (Lex.getKind() == lltok::MetadataVar) {
3184 // The normal case is one return value.
3185 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring
3186 // use of 'ret {i32,i32} {i32 1, i32 2}'
3187 SmallVector<Value*, 8> RVs;
3191 // If optional custom metadata, e.g. !dbg is seen then this is the
3193 if (Lex.getKind() == lltok::MetadataVar)
3195 if (ParseTypeAndValue(RV, PFS)) return true;
3197 } while (EatIfPresent(lltok::comma));
3199 RV = UndefValue::get(PFS.getFunction().getReturnType());
3200 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
3201 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
3202 BB->getInstList().push_back(I);
3208 Inst = ReturnInst::Create(Context, RV);
3209 return ExtraComma ? InstExtraComma : InstNormal;
3214 /// ::= 'br' TypeAndValue
3215 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3216 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3219 BasicBlock *Op1, *Op2;
3220 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3222 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3223 Inst = BranchInst::Create(BB);
3227 if (Op0->getType() != Type::getInt1Ty(Context))
3228 return Error(Loc, "branch condition must have 'i1' type");
3230 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3231 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3232 ParseToken(lltok::comma, "expected ',' after true destination") ||
3233 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3236 Inst = BranchInst::Create(Op1, Op2, Op0);
3242 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3244 /// ::= (TypeAndValue ',' TypeAndValue)*
3245 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3246 LocTy CondLoc, BBLoc;
3248 BasicBlock *DefaultBB;
3249 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3250 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3251 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3252 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3255 if (!Cond->getType()->isIntegerTy())
3256 return Error(CondLoc, "switch condition must have integer type");
3258 // Parse the jump table pairs.
3259 SmallPtrSet<Value*, 32> SeenCases;
3260 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3261 while (Lex.getKind() != lltok::rsquare) {
3265 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3266 ParseToken(lltok::comma, "expected ',' after case value") ||
3267 ParseTypeAndBasicBlock(DestBB, PFS))
3270 if (!SeenCases.insert(Constant))
3271 return Error(CondLoc, "duplicate case value in switch");
3272 if (!isa<ConstantInt>(Constant))
3273 return Error(CondLoc, "case value is not a constant integer");
3275 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3278 Lex.Lex(); // Eat the ']'.
3280 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3281 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3282 SI->addCase(Table[i].first, Table[i].second);
3289 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3290 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3293 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3294 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3295 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3298 if (!Address->getType()->isPointerTy())
3299 return Error(AddrLoc, "indirectbr address must have pointer type");
3301 // Parse the destination list.
3302 SmallVector<BasicBlock*, 16> DestList;
3304 if (Lex.getKind() != lltok::rsquare) {
3306 if (ParseTypeAndBasicBlock(DestBB, PFS))
3308 DestList.push_back(DestBB);
3310 while (EatIfPresent(lltok::comma)) {
3311 if (ParseTypeAndBasicBlock(DestBB, PFS))
3313 DestList.push_back(DestBB);
3317 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3320 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3321 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3322 IBI->addDestination(DestList[i]);
3329 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3330 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3331 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3332 LocTy CallLoc = Lex.getLoc();
3333 unsigned RetAttrs, FnAttrs;
3335 PATypeHolder RetType(Type::getVoidTy(Context));
3338 SmallVector<ParamInfo, 16> ArgList;
3340 BasicBlock *NormalBB, *UnwindBB;
3341 if (ParseOptionalCallingConv(CC) ||
3342 ParseOptionalAttrs(RetAttrs, 1) ||
3343 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3344 ParseValID(CalleeID) ||
3345 ParseParameterList(ArgList, PFS) ||
3346 ParseOptionalAttrs(FnAttrs, 2) ||
3347 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3348 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3349 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3350 ParseTypeAndBasicBlock(UnwindBB, PFS))
3353 // If RetType is a non-function pointer type, then this is the short syntax
3354 // for the call, which means that RetType is just the return type. Infer the
3355 // rest of the function argument types from the arguments that are present.
3356 const PointerType *PFTy = 0;
3357 const FunctionType *Ty = 0;
3358 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3359 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3360 // Pull out the types of all of the arguments...
3361 std::vector<const Type*> ParamTypes;
3362 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3363 ParamTypes.push_back(ArgList[i].V->getType());
3365 if (!FunctionType::isValidReturnType(RetType))
3366 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3368 Ty = FunctionType::get(RetType, ParamTypes, false);
3369 PFTy = PointerType::getUnqual(Ty);
3372 // Look up the callee.
3374 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3376 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3377 // function attributes.
3378 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3379 if (FnAttrs & ObsoleteFuncAttrs) {
3380 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3381 FnAttrs &= ~ObsoleteFuncAttrs;
3384 // Set up the Attributes for the function.
3385 SmallVector<AttributeWithIndex, 8> Attrs;
3386 if (RetAttrs != Attribute::None)
3387 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3389 SmallVector<Value*, 8> Args;
3391 // Loop through FunctionType's arguments and ensure they are specified
3392 // correctly. Also, gather any parameter attributes.
3393 FunctionType::param_iterator I = Ty->param_begin();
3394 FunctionType::param_iterator E = Ty->param_end();
3395 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3396 const Type *ExpectedTy = 0;
3399 } else if (!Ty->isVarArg()) {
3400 return Error(ArgList[i].Loc, "too many arguments specified");
3403 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3404 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3405 ExpectedTy->getDescription() + "'");
3406 Args.push_back(ArgList[i].V);
3407 if (ArgList[i].Attrs != Attribute::None)
3408 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3412 return Error(CallLoc, "not enough parameters specified for call");
3414 if (FnAttrs != Attribute::None)
3415 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3417 // Finish off the Attributes and check them
3418 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3420 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB,
3421 Args.begin(), Args.end());
3422 II->setCallingConv(CC);
3423 II->setAttributes(PAL);
3430 //===----------------------------------------------------------------------===//
3431 // Binary Operators.
3432 //===----------------------------------------------------------------------===//
3435 /// ::= ArithmeticOps TypeAndValue ',' Value
3437 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3438 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3439 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3440 unsigned Opc, unsigned OperandType) {
3441 LocTy Loc; Value *LHS, *RHS;
3442 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3443 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3444 ParseValue(LHS->getType(), RHS, PFS))
3448 switch (OperandType) {
3449 default: llvm_unreachable("Unknown operand type!");
3450 case 0: // int or FP.
3451 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3452 LHS->getType()->isFPOrFPVectorTy();
3454 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3455 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3459 return Error(Loc, "invalid operand type for instruction");
3461 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3466 /// ::= ArithmeticOps TypeAndValue ',' Value {
3467 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3469 LocTy Loc; Value *LHS, *RHS;
3470 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3471 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3472 ParseValue(LHS->getType(), RHS, PFS))
3475 if (!LHS->getType()->isIntOrIntVectorTy())
3476 return Error(Loc,"instruction requires integer or integer vector operands");
3478 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3484 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3485 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3486 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3488 // Parse the integer/fp comparison predicate.
3492 if (ParseCmpPredicate(Pred, Opc) ||
3493 ParseTypeAndValue(LHS, Loc, PFS) ||
3494 ParseToken(lltok::comma, "expected ',' after compare value") ||
3495 ParseValue(LHS->getType(), RHS, PFS))
3498 if (Opc == Instruction::FCmp) {
3499 if (!LHS->getType()->isFPOrFPVectorTy())
3500 return Error(Loc, "fcmp requires floating point operands");
3501 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3503 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3504 if (!LHS->getType()->isIntOrIntVectorTy() &&
3505 !LHS->getType()->isPointerTy())
3506 return Error(Loc, "icmp requires integer operands");
3507 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3512 //===----------------------------------------------------------------------===//
3513 // Other Instructions.
3514 //===----------------------------------------------------------------------===//
3518 /// ::= CastOpc TypeAndValue 'to' Type
3519 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3521 LocTy Loc; Value *Op;
3522 PATypeHolder DestTy(Type::getVoidTy(Context));
3523 if (ParseTypeAndValue(Op, Loc, PFS) ||
3524 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3528 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3529 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3530 return Error(Loc, "invalid cast opcode for cast from '" +
3531 Op->getType()->getDescription() + "' to '" +
3532 DestTy->getDescription() + "'");
3534 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3539 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3540 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3542 Value *Op0, *Op1, *Op2;
3543 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3544 ParseToken(lltok::comma, "expected ',' after select condition") ||
3545 ParseTypeAndValue(Op1, PFS) ||
3546 ParseToken(lltok::comma, "expected ',' after select value") ||
3547 ParseTypeAndValue(Op2, PFS))
3550 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3551 return Error(Loc, Reason);
3553 Inst = SelectInst::Create(Op0, Op1, Op2);
3558 /// ::= 'va_arg' TypeAndValue ',' Type
3559 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3561 PATypeHolder EltTy(Type::getVoidTy(Context));
3563 if (ParseTypeAndValue(Op, PFS) ||
3564 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3565 ParseType(EltTy, TypeLoc))
3568 if (!EltTy->isFirstClassType())
3569 return Error(TypeLoc, "va_arg requires operand with first class type");
3571 Inst = new VAArgInst(Op, EltTy);
3575 /// ParseExtractElement
3576 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3577 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3580 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3581 ParseToken(lltok::comma, "expected ',' after extract value") ||
3582 ParseTypeAndValue(Op1, PFS))
3585 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3586 return Error(Loc, "invalid extractelement operands");
3588 Inst = ExtractElementInst::Create(Op0, Op1);
3592 /// ParseInsertElement
3593 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3594 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3596 Value *Op0, *Op1, *Op2;
3597 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3598 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3599 ParseTypeAndValue(Op1, PFS) ||
3600 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3601 ParseTypeAndValue(Op2, PFS))
3604 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3605 return Error(Loc, "invalid insertelement operands");
3607 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3611 /// ParseShuffleVector
3612 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3613 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3615 Value *Op0, *Op1, *Op2;
3616 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3617 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3618 ParseTypeAndValue(Op1, PFS) ||
3619 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3620 ParseTypeAndValue(Op2, PFS))
3623 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3624 return Error(Loc, "invalid extractelement operands");
3626 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3631 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3632 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3633 PATypeHolder Ty(Type::getVoidTy(Context));
3635 LocTy TypeLoc = Lex.getLoc();
3637 if (ParseType(Ty) ||
3638 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3639 ParseValue(Ty, Op0, PFS) ||
3640 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3641 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3642 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3645 bool AteExtraComma = false;
3646 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3648 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3650 if (!EatIfPresent(lltok::comma))
3653 if (Lex.getKind() == lltok::MetadataVar) {
3654 AteExtraComma = true;
3658 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3659 ParseValue(Ty, Op0, PFS) ||
3660 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3661 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3662 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3666 if (!Ty->isFirstClassType())
3667 return Error(TypeLoc, "phi node must have first class type");
3669 PHINode *PN = PHINode::Create(Ty);
3670 PN->reserveOperandSpace(PHIVals.size());
3671 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3672 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3674 return AteExtraComma ? InstExtraComma : InstNormal;
3678 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3679 /// ParameterList OptionalAttrs
3680 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3682 unsigned RetAttrs, FnAttrs;
3684 PATypeHolder RetType(Type::getVoidTy(Context));
3687 SmallVector<ParamInfo, 16> ArgList;
3688 LocTy CallLoc = Lex.getLoc();
3690 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3691 ParseOptionalCallingConv(CC) ||
3692 ParseOptionalAttrs(RetAttrs, 1) ||
3693 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3694 ParseValID(CalleeID) ||
3695 ParseParameterList(ArgList, PFS) ||
3696 ParseOptionalAttrs(FnAttrs, 2))
3699 // If RetType is a non-function pointer type, then this is the short syntax
3700 // for the call, which means that RetType is just the return type. Infer the
3701 // rest of the function argument types from the arguments that are present.
3702 const PointerType *PFTy = 0;
3703 const FunctionType *Ty = 0;
3704 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3705 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3706 // Pull out the types of all of the arguments...
3707 std::vector<const Type*> ParamTypes;
3708 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3709 ParamTypes.push_back(ArgList[i].V->getType());
3711 if (!FunctionType::isValidReturnType(RetType))
3712 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3714 Ty = FunctionType::get(RetType, ParamTypes, false);
3715 PFTy = PointerType::getUnqual(Ty);
3718 // Look up the callee.
3720 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3722 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3723 // function attributes.
3724 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3725 if (FnAttrs & ObsoleteFuncAttrs) {
3726 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3727 FnAttrs &= ~ObsoleteFuncAttrs;
3730 // Set up the Attributes for the function.
3731 SmallVector<AttributeWithIndex, 8> Attrs;
3732 if (RetAttrs != Attribute::None)
3733 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3735 SmallVector<Value*, 8> Args;
3737 // Loop through FunctionType's arguments and ensure they are specified
3738 // correctly. Also, gather any parameter attributes.
3739 FunctionType::param_iterator I = Ty->param_begin();
3740 FunctionType::param_iterator E = Ty->param_end();
3741 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3742 const Type *ExpectedTy = 0;
3745 } else if (!Ty->isVarArg()) {
3746 return Error(ArgList[i].Loc, "too many arguments specified");
3749 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3750 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3751 ExpectedTy->getDescription() + "'");
3752 Args.push_back(ArgList[i].V);
3753 if (ArgList[i].Attrs != Attribute::None)
3754 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3758 return Error(CallLoc, "not enough parameters specified for call");
3760 if (FnAttrs != Attribute::None)
3761 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3763 // Finish off the Attributes and check them
3764 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3766 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3767 CI->setTailCall(isTail);
3768 CI->setCallingConv(CC);
3769 CI->setAttributes(PAL);
3774 //===----------------------------------------------------------------------===//
3775 // Memory Instructions.
3776 //===----------------------------------------------------------------------===//
3779 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalInfo)?
3780 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3781 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3782 BasicBlock* BB, bool isAlloca) {
3783 PATypeHolder Ty(Type::getVoidTy(Context));
3786 unsigned Alignment = 0;
3787 if (ParseType(Ty)) return true;
3789 bool AteExtraComma = false;
3790 if (EatIfPresent(lltok::comma)) {
3791 if (Lex.getKind() == lltok::kw_align) {
3792 if (ParseOptionalAlignment(Alignment)) return true;
3793 } else if (Lex.getKind() == lltok::MetadataVar) {
3794 AteExtraComma = true;
3796 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3797 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3802 if (Size && !Size->getType()->isIntegerTy())
3803 return Error(SizeLoc, "element count must have integer type");
3806 Inst = new AllocaInst(Ty, Size, Alignment);
3807 return AteExtraComma ? InstExtraComma : InstNormal;
3810 // Autoupgrade old malloc instruction to malloc call.
3811 // FIXME: Remove in LLVM 3.0.
3812 if (Size && !Size->getType()->isIntegerTy(32))
3813 return Error(SizeLoc, "element count must be i32");
3814 const Type *IntPtrTy = Type::getInt32Ty(Context);
3815 Constant *AllocSize = ConstantExpr::getSizeOf(Ty);
3816 AllocSize = ConstantExpr::getTruncOrBitCast(AllocSize, IntPtrTy);
3818 // Prototype malloc as "void *(int32)".
3819 // This function is renamed as "malloc" in ValidateEndOfModule().
3820 MallocF = cast<Function>(
3821 M->getOrInsertFunction("", Type::getInt8PtrTy(Context), IntPtrTy, NULL));
3822 Inst = CallInst::CreateMalloc(BB, IntPtrTy, Ty, AllocSize, Size, MallocF);
3823 return AteExtraComma ? InstExtraComma : InstNormal;
3827 /// ::= 'free' TypeAndValue
3828 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS,
3830 Value *Val; LocTy Loc;
3831 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3832 if (!Val->getType()->isPointerTy())
3833 return Error(Loc, "operand to free must be a pointer");
3834 Inst = CallInst::CreateFree(Val, BB);
3839 /// ::= 'volatile'? 'load' TypeAndValue (',' OptionalInfo)?
3840 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3842 Value *Val; LocTy Loc;
3843 unsigned Alignment = 0;
3844 bool AteExtraComma = false;
3845 if (ParseTypeAndValue(Val, Loc, PFS) ||
3846 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3849 if (!Val->getType()->isPointerTy() ||
3850 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3851 return Error(Loc, "load operand must be a pointer to a first class type");
3853 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3854 return AteExtraComma ? InstExtraComma : InstNormal;
3858 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3859 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3861 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3862 unsigned Alignment = 0;
3863 bool AteExtraComma = false;
3864 if (ParseTypeAndValue(Val, Loc, PFS) ||
3865 ParseToken(lltok::comma, "expected ',' after store operand") ||
3866 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3867 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3870 if (!Ptr->getType()->isPointerTy())
3871 return Error(PtrLoc, "store operand must be a pointer");
3872 if (!Val->getType()->isFirstClassType())
3873 return Error(Loc, "store operand must be a first class value");
3874 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3875 return Error(Loc, "stored value and pointer type do not match");
3877 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3878 return AteExtraComma ? InstExtraComma : InstNormal;
3882 /// ::= 'getresult' TypeAndValue ',' i32
3883 /// FIXME: Remove support for getresult in LLVM 3.0
3884 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3885 Value *Val; LocTy ValLoc, EltLoc;
3887 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3888 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3889 ParseUInt32(Element, EltLoc))
3892 if (!Val->getType()->isStructTy() && !Val->getType()->isArrayTy())
3893 return Error(ValLoc, "getresult inst requires an aggregate operand");
3894 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3895 return Error(EltLoc, "invalid getresult index for value");
3896 Inst = ExtractValueInst::Create(Val, Element);
3900 /// ParseGetElementPtr
3901 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3902 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3903 Value *Ptr, *Val; LocTy Loc, EltLoc;
3905 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3907 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3909 if (!Ptr->getType()->isPointerTy())
3910 return Error(Loc, "base of getelementptr must be a pointer");
3912 SmallVector<Value*, 16> Indices;
3913 bool AteExtraComma = false;
3914 while (EatIfPresent(lltok::comma)) {
3915 if (Lex.getKind() == lltok::MetadataVar) {
3916 AteExtraComma = true;
3919 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3920 if (!Val->getType()->isIntegerTy())
3921 return Error(EltLoc, "getelementptr index must be an integer");
3922 Indices.push_back(Val);
3925 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3926 Indices.begin(), Indices.end()))
3927 return Error(Loc, "invalid getelementptr indices");
3928 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3930 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3931 return AteExtraComma ? InstExtraComma : InstNormal;
3934 /// ParseExtractValue
3935 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3936 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3937 Value *Val; LocTy Loc;
3938 SmallVector<unsigned, 4> Indices;
3940 if (ParseTypeAndValue(Val, Loc, PFS) ||
3941 ParseIndexList(Indices, AteExtraComma))
3944 if (!Val->getType()->isAggregateType())
3945 return Error(Loc, "extractvalue operand must be aggregate type");
3947 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3949 return Error(Loc, "invalid indices for extractvalue");
3950 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3951 return AteExtraComma ? InstExtraComma : InstNormal;
3954 /// ParseInsertValue
3955 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3956 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3957 Value *Val0, *Val1; LocTy Loc0, Loc1;
3958 SmallVector<unsigned, 4> Indices;
3960 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3961 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3962 ParseTypeAndValue(Val1, Loc1, PFS) ||
3963 ParseIndexList(Indices, AteExtraComma))
3966 if (!Val0->getType()->isAggregateType())
3967 return Error(Loc0, "insertvalue operand must be aggregate type");
3969 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3971 return Error(Loc0, "invalid indices for insertvalue");
3972 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3973 return AteExtraComma ? InstExtraComma : InstNormal;
3976 //===----------------------------------------------------------------------===//
3977 // Embedded metadata.
3978 //===----------------------------------------------------------------------===//
3980 /// ParseMDNodeVector
3981 /// ::= Element (',' Element)*
3983 /// ::= 'null' | TypeAndValue
3984 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
3985 PerFunctionState *PFS) {
3987 // Null is a special case since it is typeless.
3988 if (EatIfPresent(lltok::kw_null)) {
3994 PATypeHolder Ty(Type::getVoidTy(Context));
3996 if (ParseType(Ty) || ParseValID(ID, PFS) ||
3997 ConvertValIDToValue(Ty, ID, V, PFS))
4001 } while (EatIfPresent(lltok::comma));