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_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::LinkerWeakLinkage)
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_weak'
1023 /// ::= 'linkonce_odr'
1028 /// ::= 'extern_weak'
1030 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1032 switch (Lex.getKind()) {
1033 default: Res=GlobalValue::ExternalLinkage; return false;
1034 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1035 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1036 case lltok::kw_linker_weak: Res = GlobalValue::LinkerWeakLinkage; break;
1037 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1038 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1039 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1040 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1041 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1042 case lltok::kw_available_externally:
1043 Res = GlobalValue::AvailableExternallyLinkage;
1045 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1046 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1047 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1048 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1049 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1050 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1057 /// ParseOptionalVisibility
1063 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1064 switch (Lex.getKind()) {
1065 default: Res = GlobalValue::DefaultVisibility; return false;
1066 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1067 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1068 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1074 /// ParseOptionalCallingConv
1079 /// ::= 'x86_stdcallcc'
1080 /// ::= 'x86_fastcallcc'
1081 /// ::= 'x86_thiscallcc'
1082 /// ::= 'arm_apcscc'
1083 /// ::= 'arm_aapcscc'
1084 /// ::= 'arm_aapcs_vfpcc'
1085 /// ::= 'msp430_intrcc'
1088 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1089 switch (Lex.getKind()) {
1090 default: CC = CallingConv::C; return false;
1091 case lltok::kw_ccc: CC = CallingConv::C; break;
1092 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1093 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1094 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1095 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1096 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1097 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1098 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1099 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1100 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1101 case lltok::kw_cc: {
1102 unsigned ArbitraryCC;
1104 if (ParseUInt32(ArbitraryCC)) {
1107 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1117 /// ParseInstructionMetadata
1118 /// ::= !dbg !42 (',' !dbg !57)*
1119 bool LLParser::ParseInstructionMetadata(Instruction *Inst) {
1121 if (Lex.getKind() != lltok::MetadataVar)
1122 return TokError("expected metadata after comma");
1124 std::string Name = Lex.getStrVal();
1129 SMLoc Loc = Lex.getLoc();
1130 if (ParseToken(lltok::exclaim, "expected '!' here") ||
1131 ParseMDNodeID(Node, NodeID))
1134 unsigned MDK = M->getMDKindID(Name.c_str());
1136 // If we got the node, add it to the instruction.
1137 Inst->setMetadata(MDK, Node);
1139 MDRef R = { Loc, MDK, NodeID };
1140 // Otherwise, remember that this should be resolved later.
1141 ForwardRefInstMetadata[Inst].push_back(R);
1144 // If this is the end of the list, we're done.
1145 } while (EatIfPresent(lltok::comma));
1149 /// ParseOptionalAlignment
1152 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1154 if (!EatIfPresent(lltok::kw_align))
1156 LocTy AlignLoc = Lex.getLoc();
1157 if (ParseUInt32(Alignment)) return true;
1158 if (!isPowerOf2_32(Alignment))
1159 return Error(AlignLoc, "alignment is not a power of two");
1163 /// ParseOptionalCommaAlign
1167 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1169 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1170 bool &AteExtraComma) {
1171 AteExtraComma = false;
1172 while (EatIfPresent(lltok::comma)) {
1173 // Metadata at the end is an early exit.
1174 if (Lex.getKind() == lltok::MetadataVar) {
1175 AteExtraComma = true;
1179 if (Lex.getKind() != lltok::kw_align)
1180 return Error(Lex.getLoc(), "expected metadata or 'align'");
1182 if (ParseOptionalAlignment(Alignment)) return true;
1188 /// ParseOptionalStackAlignment
1190 /// ::= 'alignstack' '(' 4 ')'
1191 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1193 if (!EatIfPresent(lltok::kw_alignstack))
1195 LocTy ParenLoc = Lex.getLoc();
1196 if (!EatIfPresent(lltok::lparen))
1197 return Error(ParenLoc, "expected '('");
1198 LocTy AlignLoc = Lex.getLoc();
1199 if (ParseUInt32(Alignment)) return true;
1200 ParenLoc = Lex.getLoc();
1201 if (!EatIfPresent(lltok::rparen))
1202 return Error(ParenLoc, "expected ')'");
1203 if (!isPowerOf2_32(Alignment))
1204 return Error(AlignLoc, "stack alignment is not a power of two");
1208 /// ParseIndexList - This parses the index list for an insert/extractvalue
1209 /// instruction. This sets AteExtraComma in the case where we eat an extra
1210 /// comma at the end of the line and find that it is followed by metadata.
1211 /// Clients that don't allow metadata can call the version of this function that
1212 /// only takes one argument.
1215 /// ::= (',' uint32)+
1217 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1218 bool &AteExtraComma) {
1219 AteExtraComma = false;
1221 if (Lex.getKind() != lltok::comma)
1222 return TokError("expected ',' as start of index list");
1224 while (EatIfPresent(lltok::comma)) {
1225 if (Lex.getKind() == lltok::MetadataVar) {
1226 AteExtraComma = true;
1230 if (ParseUInt32(Idx)) return true;
1231 Indices.push_back(Idx);
1237 //===----------------------------------------------------------------------===//
1239 //===----------------------------------------------------------------------===//
1241 /// ParseType - Parse and resolve a full type.
1242 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1243 LocTy TypeLoc = Lex.getLoc();
1244 if (ParseTypeRec(Result)) return true;
1246 // Verify no unresolved uprefs.
1247 if (!UpRefs.empty())
1248 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1250 if (!AllowVoid && Result.get()->isVoidTy())
1251 return Error(TypeLoc, "void type only allowed for function results");
1256 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1257 /// called. It loops through the UpRefs vector, which is a list of the
1258 /// currently active types. For each type, if the up-reference is contained in
1259 /// the newly completed type, we decrement the level count. When the level
1260 /// count reaches zero, the up-referenced type is the type that is passed in:
1261 /// thus we can complete the cycle.
1263 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1264 // If Ty isn't abstract, or if there are no up-references in it, then there is
1265 // nothing to resolve here.
1266 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1268 PATypeHolder Ty(ty);
1270 dbgs() << "Type '" << Ty->getDescription()
1271 << "' newly formed. Resolving upreferences.\n"
1272 << UpRefs.size() << " upreferences active!\n";
1275 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1276 // to zero), we resolve them all together before we resolve them to Ty. At
1277 // the end of the loop, if there is anything to resolve to Ty, it will be in
1279 OpaqueType *TypeToResolve = 0;
1281 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1282 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1284 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1285 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1288 dbgs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1289 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1290 << (ContainsType ? "true" : "false")
1291 << " level=" << UpRefs[i].NestingLevel << "\n";
1296 // Decrement level of upreference
1297 unsigned Level = --UpRefs[i].NestingLevel;
1298 UpRefs[i].LastContainedTy = Ty;
1300 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1305 dbgs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1308 TypeToResolve = UpRefs[i].UpRefTy;
1310 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1311 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1312 --i; // Do not skip the next element.
1316 TypeToResolve->refineAbstractTypeTo(Ty);
1322 /// ParseTypeRec - The recursive function used to process the internal
1323 /// implementation details of types.
1324 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1325 switch (Lex.getKind()) {
1327 return TokError("expected type");
1329 // TypeRec ::= 'float' | 'void' (etc)
1330 Result = Lex.getTyVal();
1333 case lltok::kw_opaque:
1334 // TypeRec ::= 'opaque'
1335 Result = OpaqueType::get(Context);
1339 // TypeRec ::= '{' ... '}'
1340 if (ParseStructType(Result, false))
1343 case lltok::kw_union:
1344 // TypeRec ::= 'union' '{' ... '}'
1345 if (ParseUnionType(Result))
1348 case lltok::lsquare:
1349 // TypeRec ::= '[' ... ']'
1350 Lex.Lex(); // eat the lsquare.
1351 if (ParseArrayVectorType(Result, false))
1354 case lltok::less: // Either vector or packed struct.
1355 // TypeRec ::= '<' ... '>'
1357 if (Lex.getKind() == lltok::lbrace) {
1358 if (ParseStructType(Result, true) ||
1359 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1361 } else if (ParseArrayVectorType(Result, true))
1364 case lltok::LocalVar:
1365 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1367 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1370 Result = OpaqueType::get(Context);
1371 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1372 std::make_pair(Result,
1374 M->addTypeName(Lex.getStrVal(), Result.get());
1379 case lltok::LocalVarID:
1381 if (Lex.getUIntVal() < NumberedTypes.size())
1382 Result = NumberedTypes[Lex.getUIntVal()];
1384 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1385 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1386 if (I != ForwardRefTypeIDs.end())
1387 Result = I->second.first;
1389 Result = OpaqueType::get(Context);
1390 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1391 std::make_pair(Result,
1397 case lltok::backslash: {
1398 // TypeRec ::= '\' 4
1401 if (ParseUInt32(Val)) return true;
1402 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1403 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1409 // Parse the type suffixes.
1411 switch (Lex.getKind()) {
1413 default: return false;
1415 // TypeRec ::= TypeRec '*'
1417 if (Result.get()->isLabelTy())
1418 return TokError("basic block pointers are invalid");
1419 if (Result.get()->isVoidTy())
1420 return TokError("pointers to void are invalid; use i8* instead");
1421 if (!PointerType::isValidElementType(Result.get()))
1422 return TokError("pointer to this type is invalid");
1423 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1427 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1428 case lltok::kw_addrspace: {
1429 if (Result.get()->isLabelTy())
1430 return TokError("basic block pointers are invalid");
1431 if (Result.get()->isVoidTy())
1432 return TokError("pointers to void are invalid; use i8* instead");
1433 if (!PointerType::isValidElementType(Result.get()))
1434 return TokError("pointer to this type is invalid");
1436 if (ParseOptionalAddrSpace(AddrSpace) ||
1437 ParseToken(lltok::star, "expected '*' in address space"))
1440 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1444 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1446 if (ParseFunctionType(Result))
1453 /// ParseParameterList
1455 /// ::= '(' Arg (',' Arg)* ')'
1457 /// ::= Type OptionalAttributes Value OptionalAttributes
1458 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1459 PerFunctionState &PFS) {
1460 if (ParseToken(lltok::lparen, "expected '(' in call"))
1463 while (Lex.getKind() != lltok::rparen) {
1464 // If this isn't the first argument, we need a comma.
1465 if (!ArgList.empty() &&
1466 ParseToken(lltok::comma, "expected ',' in argument list"))
1469 // Parse the argument.
1471 PATypeHolder ArgTy(Type::getVoidTy(Context));
1472 unsigned ArgAttrs1 = Attribute::None;
1473 unsigned ArgAttrs2 = Attribute::None;
1475 if (ParseType(ArgTy, ArgLoc))
1478 // Otherwise, handle normal operands.
1479 if (ParseOptionalAttrs(ArgAttrs1, 0) ||
1480 ParseValue(ArgTy, V, PFS) ||
1481 // FIXME: Should not allow attributes after the argument, remove this
1483 ParseOptionalAttrs(ArgAttrs2, 3))
1485 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1488 Lex.Lex(); // Lex the ')'.
1494 /// ParseArgumentList - Parse the argument list for a function type or function
1495 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1496 /// ::= '(' ArgTypeListI ')'
1500 /// ::= ArgTypeList ',' '...'
1501 /// ::= ArgType (',' ArgType)*
1503 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1504 bool &isVarArg, bool inType) {
1506 assert(Lex.getKind() == lltok::lparen);
1507 Lex.Lex(); // eat the (.
1509 if (Lex.getKind() == lltok::rparen) {
1511 } else if (Lex.getKind() == lltok::dotdotdot) {
1515 LocTy TypeLoc = Lex.getLoc();
1516 PATypeHolder ArgTy(Type::getVoidTy(Context));
1520 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1521 // types (such as a function returning a pointer to itself). If parsing a
1522 // function prototype, we require fully resolved types.
1523 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1524 ParseOptionalAttrs(Attrs, 0)) return true;
1526 if (ArgTy->isVoidTy())
1527 return Error(TypeLoc, "argument can not have void type");
1529 if (Lex.getKind() == lltok::LocalVar ||
1530 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1531 Name = Lex.getStrVal();
1535 if (!FunctionType::isValidArgumentType(ArgTy))
1536 return Error(TypeLoc, "invalid type for function argument");
1538 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1540 while (EatIfPresent(lltok::comma)) {
1541 // Handle ... at end of arg list.
1542 if (EatIfPresent(lltok::dotdotdot)) {
1547 // Otherwise must be an argument type.
1548 TypeLoc = Lex.getLoc();
1549 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1550 ParseOptionalAttrs(Attrs, 0)) return true;
1552 if (ArgTy->isVoidTy())
1553 return Error(TypeLoc, "argument can not have void type");
1555 if (Lex.getKind() == lltok::LocalVar ||
1556 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1557 Name = Lex.getStrVal();
1563 if (!ArgTy->isFirstClassType() && !ArgTy->isOpaqueTy())
1564 return Error(TypeLoc, "invalid type for function argument");
1566 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1570 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1573 /// ParseFunctionType
1574 /// ::= Type ArgumentList OptionalAttrs
1575 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1576 assert(Lex.getKind() == lltok::lparen);
1578 if (!FunctionType::isValidReturnType(Result))
1579 return TokError("invalid function return type");
1581 std::vector<ArgInfo> ArgList;
1584 if (ParseArgumentList(ArgList, isVarArg, true) ||
1585 // FIXME: Allow, but ignore attributes on function types!
1586 // FIXME: Remove in LLVM 3.0
1587 ParseOptionalAttrs(Attrs, 2))
1590 // Reject names on the arguments lists.
1591 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1592 if (!ArgList[i].Name.empty())
1593 return Error(ArgList[i].Loc, "argument name invalid in function type");
1594 if (!ArgList[i].Attrs != 0) {
1595 // Allow but ignore attributes on function types; this permits
1597 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1601 std::vector<const Type*> ArgListTy;
1602 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1603 ArgListTy.push_back(ArgList[i].Type);
1605 Result = HandleUpRefs(FunctionType::get(Result.get(),
1606 ArgListTy, isVarArg));
1610 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1613 /// ::= '{' TypeRec (',' TypeRec)* '}'
1614 /// ::= '<' '{' '}' '>'
1615 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1616 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1617 assert(Lex.getKind() == lltok::lbrace);
1618 Lex.Lex(); // Consume the '{'
1620 if (EatIfPresent(lltok::rbrace)) {
1621 Result = StructType::get(Context, Packed);
1625 std::vector<PATypeHolder> ParamsList;
1626 LocTy EltTyLoc = Lex.getLoc();
1627 if (ParseTypeRec(Result)) return true;
1628 ParamsList.push_back(Result);
1630 if (Result->isVoidTy())
1631 return Error(EltTyLoc, "struct element can not have void type");
1632 if (!StructType::isValidElementType(Result))
1633 return Error(EltTyLoc, "invalid element type for struct");
1635 while (EatIfPresent(lltok::comma)) {
1636 EltTyLoc = Lex.getLoc();
1637 if (ParseTypeRec(Result)) return true;
1639 if (Result->isVoidTy())
1640 return Error(EltTyLoc, "struct element can not have void type");
1641 if (!StructType::isValidElementType(Result))
1642 return Error(EltTyLoc, "invalid element type for struct");
1644 ParamsList.push_back(Result);
1647 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1650 std::vector<const Type*> ParamsListTy;
1651 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1652 ParamsListTy.push_back(ParamsList[i].get());
1653 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1659 /// ::= 'union' '{' TypeRec (',' TypeRec)* '}'
1660 bool LLParser::ParseUnionType(PATypeHolder &Result) {
1661 assert(Lex.getKind() == lltok::kw_union);
1662 Lex.Lex(); // Consume the 'union'
1664 if (ParseToken(lltok::lbrace, "'{' expected after 'union'")) return true;
1666 SmallVector<PATypeHolder, 8> ParamsList;
1668 LocTy EltTyLoc = Lex.getLoc();
1669 if (ParseTypeRec(Result)) return true;
1670 ParamsList.push_back(Result);
1672 if (Result->isVoidTy())
1673 return Error(EltTyLoc, "union element can not have void type");
1674 if (!UnionType::isValidElementType(Result))
1675 return Error(EltTyLoc, "invalid element type for union");
1677 } while (EatIfPresent(lltok::comma)) ;
1679 if (ParseToken(lltok::rbrace, "expected '}' at end of union"))
1682 SmallVector<const Type*, 8> ParamsListTy;
1683 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1684 ParamsListTy.push_back(ParamsList[i].get());
1685 Result = HandleUpRefs(UnionType::get(&ParamsListTy[0], ParamsListTy.size()));
1689 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1690 /// token has already been consumed.
1692 /// ::= '[' APSINTVAL 'x' Types ']'
1693 /// ::= '<' APSINTVAL 'x' Types '>'
1694 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1695 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1696 Lex.getAPSIntVal().getBitWidth() > 64)
1697 return TokError("expected number in address space");
1699 LocTy SizeLoc = Lex.getLoc();
1700 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1703 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1706 LocTy TypeLoc = Lex.getLoc();
1707 PATypeHolder EltTy(Type::getVoidTy(Context));
1708 if (ParseTypeRec(EltTy)) return true;
1710 if (EltTy->isVoidTy())
1711 return Error(TypeLoc, "array and vector element type cannot be void");
1713 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1714 "expected end of sequential type"))
1719 return Error(SizeLoc, "zero element vector is illegal");
1720 if ((unsigned)Size != Size)
1721 return Error(SizeLoc, "size too large for vector");
1722 if (!VectorType::isValidElementType(EltTy))
1723 return Error(TypeLoc, "vector element type must be fp or integer");
1724 Result = VectorType::get(EltTy, unsigned(Size));
1726 if (!ArrayType::isValidElementType(EltTy))
1727 return Error(TypeLoc, "invalid array element type");
1728 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1733 //===----------------------------------------------------------------------===//
1734 // Function Semantic Analysis.
1735 //===----------------------------------------------------------------------===//
1737 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1739 : P(p), F(f), FunctionNumber(functionNumber) {
1741 // Insert unnamed arguments into the NumberedVals list.
1742 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1745 NumberedVals.push_back(AI);
1748 LLParser::PerFunctionState::~PerFunctionState() {
1749 // If there were any forward referenced non-basicblock values, delete them.
1750 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1751 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1752 if (!isa<BasicBlock>(I->second.first)) {
1753 I->second.first->replaceAllUsesWith(
1754 UndefValue::get(I->second.first->getType()));
1755 delete I->second.first;
1756 I->second.first = 0;
1759 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1760 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1761 if (!isa<BasicBlock>(I->second.first)) {
1762 I->second.first->replaceAllUsesWith(
1763 UndefValue::get(I->second.first->getType()));
1764 delete I->second.first;
1765 I->second.first = 0;
1769 bool LLParser::PerFunctionState::FinishFunction() {
1770 // Check to see if someone took the address of labels in this block.
1771 if (!P.ForwardRefBlockAddresses.empty()) {
1773 if (!F.getName().empty()) {
1774 FunctionID.Kind = ValID::t_GlobalName;
1775 FunctionID.StrVal = F.getName();
1777 FunctionID.Kind = ValID::t_GlobalID;
1778 FunctionID.UIntVal = FunctionNumber;
1781 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1782 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1783 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1784 // Resolve all these references.
1785 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1788 P.ForwardRefBlockAddresses.erase(FRBAI);
1792 if (!ForwardRefVals.empty())
1793 return P.Error(ForwardRefVals.begin()->second.second,
1794 "use of undefined value '%" + ForwardRefVals.begin()->first +
1796 if (!ForwardRefValIDs.empty())
1797 return P.Error(ForwardRefValIDs.begin()->second.second,
1798 "use of undefined value '%" +
1799 utostr(ForwardRefValIDs.begin()->first) + "'");
1804 /// GetVal - Get a value with the specified name or ID, creating a
1805 /// forward reference record if needed. This can return null if the value
1806 /// exists but does not have the right type.
1807 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1808 const Type *Ty, LocTy Loc) {
1809 // Look this name up in the normal function symbol table.
1810 Value *Val = F.getValueSymbolTable().lookup(Name);
1812 // If this is a forward reference for the value, see if we already created a
1813 // forward ref record.
1815 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1816 I = ForwardRefVals.find(Name);
1817 if (I != ForwardRefVals.end())
1818 Val = I->second.first;
1821 // If we have the value in the symbol table or fwd-ref table, return it.
1823 if (Val->getType() == Ty) return Val;
1824 if (Ty->isLabelTy())
1825 P.Error(Loc, "'%" + Name + "' is not a basic block");
1827 P.Error(Loc, "'%" + Name + "' defined with type '" +
1828 Val->getType()->getDescription() + "'");
1832 // Don't make placeholders with invalid type.
1833 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1834 P.Error(Loc, "invalid use of a non-first-class type");
1838 // Otherwise, create a new forward reference for this value and remember it.
1840 if (Ty->isLabelTy())
1841 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1843 FwdVal = new Argument(Ty, Name);
1845 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1849 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1851 // Look this name up in the normal function symbol table.
1852 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1854 // If this is a forward reference for the value, see if we already created a
1855 // forward ref record.
1857 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1858 I = ForwardRefValIDs.find(ID);
1859 if (I != ForwardRefValIDs.end())
1860 Val = I->second.first;
1863 // If we have the value in the symbol table or fwd-ref table, return it.
1865 if (Val->getType() == Ty) return Val;
1866 if (Ty->isLabelTy())
1867 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1869 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1870 Val->getType()->getDescription() + "'");
1874 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1875 P.Error(Loc, "invalid use of a non-first-class type");
1879 // Otherwise, create a new forward reference for this value and remember it.
1881 if (Ty->isLabelTy())
1882 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1884 FwdVal = new Argument(Ty);
1886 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1890 /// SetInstName - After an instruction is parsed and inserted into its
1891 /// basic block, this installs its name.
1892 bool LLParser::PerFunctionState::SetInstName(int NameID,
1893 const std::string &NameStr,
1894 LocTy NameLoc, Instruction *Inst) {
1895 // If this instruction has void type, it cannot have a name or ID specified.
1896 if (Inst->getType()->isVoidTy()) {
1897 if (NameID != -1 || !NameStr.empty())
1898 return P.Error(NameLoc, "instructions returning void cannot have a name");
1902 // If this was a numbered instruction, verify that the instruction is the
1903 // expected value and resolve any forward references.
1904 if (NameStr.empty()) {
1905 // If neither a name nor an ID was specified, just use the next ID.
1907 NameID = NumberedVals.size();
1909 if (unsigned(NameID) != NumberedVals.size())
1910 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1911 utostr(NumberedVals.size()) + "'");
1913 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1914 ForwardRefValIDs.find(NameID);
1915 if (FI != ForwardRefValIDs.end()) {
1916 if (FI->second.first->getType() != Inst->getType())
1917 return P.Error(NameLoc, "instruction forward referenced with type '" +
1918 FI->second.first->getType()->getDescription() + "'");
1919 FI->second.first->replaceAllUsesWith(Inst);
1920 delete FI->second.first;
1921 ForwardRefValIDs.erase(FI);
1924 NumberedVals.push_back(Inst);
1928 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1929 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1930 FI = ForwardRefVals.find(NameStr);
1931 if (FI != ForwardRefVals.end()) {
1932 if (FI->second.first->getType() != Inst->getType())
1933 return P.Error(NameLoc, "instruction forward referenced with type '" +
1934 FI->second.first->getType()->getDescription() + "'");
1935 FI->second.first->replaceAllUsesWith(Inst);
1936 delete FI->second.first;
1937 ForwardRefVals.erase(FI);
1940 // Set the name on the instruction.
1941 Inst->setName(NameStr);
1943 if (Inst->getNameStr() != NameStr)
1944 return P.Error(NameLoc, "multiple definition of local value named '" +
1949 /// GetBB - Get a basic block with the specified name or ID, creating a
1950 /// forward reference record if needed.
1951 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1953 return cast_or_null<BasicBlock>(GetVal(Name,
1954 Type::getLabelTy(F.getContext()), Loc));
1957 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1958 return cast_or_null<BasicBlock>(GetVal(ID,
1959 Type::getLabelTy(F.getContext()), Loc));
1962 /// DefineBB - Define the specified basic block, which is either named or
1963 /// unnamed. If there is an error, this returns null otherwise it returns
1964 /// the block being defined.
1965 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1969 BB = GetBB(NumberedVals.size(), Loc);
1971 BB = GetBB(Name, Loc);
1972 if (BB == 0) return 0; // Already diagnosed error.
1974 // Move the block to the end of the function. Forward ref'd blocks are
1975 // inserted wherever they happen to be referenced.
1976 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1978 // Remove the block from forward ref sets.
1980 ForwardRefValIDs.erase(NumberedVals.size());
1981 NumberedVals.push_back(BB);
1983 // BB forward references are already in the function symbol table.
1984 ForwardRefVals.erase(Name);
1990 //===----------------------------------------------------------------------===//
1992 //===----------------------------------------------------------------------===//
1994 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1995 /// type implied. For example, if we parse "4" we don't know what integer type
1996 /// it has. The value will later be combined with its type and checked for
1997 /// sanity. PFS is used to convert function-local operands of metadata (since
1998 /// metadata operands are not just parsed here but also converted to values).
1999 /// PFS can be null when we are not parsing metadata values inside a function.
2000 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2001 ID.Loc = Lex.getLoc();
2002 switch (Lex.getKind()) {
2003 default: return TokError("expected value token");
2004 case lltok::GlobalID: // @42
2005 ID.UIntVal = Lex.getUIntVal();
2006 ID.Kind = ValID::t_GlobalID;
2008 case lltok::GlobalVar: // @foo
2009 ID.StrVal = Lex.getStrVal();
2010 ID.Kind = ValID::t_GlobalName;
2012 case lltok::LocalVarID: // %42
2013 ID.UIntVal = Lex.getUIntVal();
2014 ID.Kind = ValID::t_LocalID;
2016 case lltok::LocalVar: // %foo
2017 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
2018 ID.StrVal = Lex.getStrVal();
2019 ID.Kind = ValID::t_LocalName;
2021 case lltok::exclaim: // !{...} MDNode, !"foo" MDString
2024 if (EatIfPresent(lltok::lbrace)) {
2025 SmallVector<Value*, 16> Elts;
2026 if (ParseMDNodeVector(Elts, PFS) ||
2027 ParseToken(lltok::rbrace, "expected end of metadata node"))
2030 ID.MDNodeVal = MDNode::get(Context, Elts.data(), Elts.size());
2031 ID.Kind = ValID::t_MDNode;
2035 // Standalone metadata reference
2036 // !{ ..., !42, ... }
2037 if (Lex.getKind() == lltok::APSInt) {
2038 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2039 ID.Kind = ValID::t_MDNode;
2044 // ::= '!' STRINGCONSTANT
2045 if (ParseMDString(ID.MDStringVal)) return true;
2046 ID.Kind = ValID::t_MDString;
2049 ID.APSIntVal = Lex.getAPSIntVal();
2050 ID.Kind = ValID::t_APSInt;
2052 case lltok::APFloat:
2053 ID.APFloatVal = Lex.getAPFloatVal();
2054 ID.Kind = ValID::t_APFloat;
2056 case lltok::kw_true:
2057 ID.ConstantVal = ConstantInt::getTrue(Context);
2058 ID.Kind = ValID::t_Constant;
2060 case lltok::kw_false:
2061 ID.ConstantVal = ConstantInt::getFalse(Context);
2062 ID.Kind = ValID::t_Constant;
2064 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2065 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2066 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2068 case lltok::lbrace: {
2069 // ValID ::= '{' ConstVector '}'
2071 SmallVector<Constant*, 16> Elts;
2072 if (ParseGlobalValueVector(Elts) ||
2073 ParseToken(lltok::rbrace, "expected end of struct constant"))
2076 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
2077 Elts.size(), false);
2078 ID.Kind = ValID::t_Constant;
2082 // ValID ::= '<' ConstVector '>' --> Vector.
2083 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2085 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2087 SmallVector<Constant*, 16> Elts;
2088 LocTy FirstEltLoc = Lex.getLoc();
2089 if (ParseGlobalValueVector(Elts) ||
2091 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2092 ParseToken(lltok::greater, "expected end of constant"))
2095 if (isPackedStruct) {
2097 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
2098 ID.Kind = ValID::t_Constant;
2103 return Error(ID.Loc, "constant vector must not be empty");
2105 if (!Elts[0]->getType()->isIntegerTy() &&
2106 !Elts[0]->getType()->isFloatingPointTy())
2107 return Error(FirstEltLoc,
2108 "vector elements must have integer or floating point type");
2110 // Verify that all the vector elements have the same type.
2111 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2112 if (Elts[i]->getType() != Elts[0]->getType())
2113 return Error(FirstEltLoc,
2114 "vector element #" + utostr(i) +
2115 " is not of type '" + Elts[0]->getType()->getDescription());
2117 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
2118 ID.Kind = ValID::t_Constant;
2121 case lltok::lsquare: { // Array Constant
2123 SmallVector<Constant*, 16> Elts;
2124 LocTy FirstEltLoc = Lex.getLoc();
2125 if (ParseGlobalValueVector(Elts) ||
2126 ParseToken(lltok::rsquare, "expected end of array constant"))
2129 // Handle empty element.
2131 // Use undef instead of an array because it's inconvenient to determine
2132 // the element type at this point, there being no elements to examine.
2133 ID.Kind = ValID::t_EmptyArray;
2137 if (!Elts[0]->getType()->isFirstClassType())
2138 return Error(FirstEltLoc, "invalid array element type: " +
2139 Elts[0]->getType()->getDescription());
2141 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2143 // Verify all elements are correct type!
2144 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2145 if (Elts[i]->getType() != Elts[0]->getType())
2146 return Error(FirstEltLoc,
2147 "array element #" + utostr(i) +
2148 " is not of type '" +Elts[0]->getType()->getDescription());
2151 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
2152 ID.Kind = ValID::t_Constant;
2155 case lltok::kw_c: // c "foo"
2157 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
2158 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2159 ID.Kind = ValID::t_Constant;
2162 case lltok::kw_asm: {
2163 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2164 bool HasSideEffect, AlignStack;
2166 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2167 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2168 ParseStringConstant(ID.StrVal) ||
2169 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2170 ParseToken(lltok::StringConstant, "expected constraint string"))
2172 ID.StrVal2 = Lex.getStrVal();
2173 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2174 ID.Kind = ValID::t_InlineAsm;
2178 case lltok::kw_blockaddress: {
2179 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2183 LocTy FnLoc, LabelLoc;
2185 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2187 ParseToken(lltok::comma, "expected comma in block address expression")||
2188 ParseValID(Label) ||
2189 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2192 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2193 return Error(Fn.Loc, "expected function name in blockaddress");
2194 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2195 return Error(Label.Loc, "expected basic block name in blockaddress");
2197 // Make a global variable as a placeholder for this reference.
2198 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2199 false, GlobalValue::InternalLinkage,
2201 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2202 ID.ConstantVal = FwdRef;
2203 ID.Kind = ValID::t_Constant;
2207 case lltok::kw_trunc:
2208 case lltok::kw_zext:
2209 case lltok::kw_sext:
2210 case lltok::kw_fptrunc:
2211 case lltok::kw_fpext:
2212 case lltok::kw_bitcast:
2213 case lltok::kw_uitofp:
2214 case lltok::kw_sitofp:
2215 case lltok::kw_fptoui:
2216 case lltok::kw_fptosi:
2217 case lltok::kw_inttoptr:
2218 case lltok::kw_ptrtoint: {
2219 unsigned Opc = Lex.getUIntVal();
2220 PATypeHolder DestTy(Type::getVoidTy(Context));
2223 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2224 ParseGlobalTypeAndValue(SrcVal) ||
2225 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2226 ParseType(DestTy) ||
2227 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2229 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2230 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2231 SrcVal->getType()->getDescription() + "' to '" +
2232 DestTy->getDescription() + "'");
2233 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2235 ID.Kind = ValID::t_Constant;
2238 case lltok::kw_extractvalue: {
2241 SmallVector<unsigned, 4> Indices;
2242 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2243 ParseGlobalTypeAndValue(Val) ||
2244 ParseIndexList(Indices) ||
2245 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2248 if (!Val->getType()->isAggregateType())
2249 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2250 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
2252 return Error(ID.Loc, "invalid indices for extractvalue");
2254 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
2255 ID.Kind = ValID::t_Constant;
2258 case lltok::kw_insertvalue: {
2260 Constant *Val0, *Val1;
2261 SmallVector<unsigned, 4> Indices;
2262 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2263 ParseGlobalTypeAndValue(Val0) ||
2264 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2265 ParseGlobalTypeAndValue(Val1) ||
2266 ParseIndexList(Indices) ||
2267 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2269 if (!Val0->getType()->isAggregateType())
2270 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2271 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
2273 return Error(ID.Loc, "invalid indices for insertvalue");
2274 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
2275 Indices.data(), Indices.size());
2276 ID.Kind = ValID::t_Constant;
2279 case lltok::kw_icmp:
2280 case lltok::kw_fcmp: {
2281 unsigned PredVal, Opc = Lex.getUIntVal();
2282 Constant *Val0, *Val1;
2284 if (ParseCmpPredicate(PredVal, Opc) ||
2285 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2286 ParseGlobalTypeAndValue(Val0) ||
2287 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2288 ParseGlobalTypeAndValue(Val1) ||
2289 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2292 if (Val0->getType() != Val1->getType())
2293 return Error(ID.Loc, "compare operands must have the same type");
2295 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2297 if (Opc == Instruction::FCmp) {
2298 if (!Val0->getType()->isFPOrFPVectorTy())
2299 return Error(ID.Loc, "fcmp requires floating point operands");
2300 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2302 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2303 if (!Val0->getType()->isIntOrIntVectorTy() &&
2304 !Val0->getType()->isPointerTy())
2305 return Error(ID.Loc, "icmp requires pointer or integer operands");
2306 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2308 ID.Kind = ValID::t_Constant;
2312 // Binary Operators.
2314 case lltok::kw_fadd:
2316 case lltok::kw_fsub:
2318 case lltok::kw_fmul:
2319 case lltok::kw_udiv:
2320 case lltok::kw_sdiv:
2321 case lltok::kw_fdiv:
2322 case lltok::kw_urem:
2323 case lltok::kw_srem:
2324 case lltok::kw_frem: {
2328 unsigned Opc = Lex.getUIntVal();
2329 Constant *Val0, *Val1;
2331 LocTy ModifierLoc = Lex.getLoc();
2332 if (Opc == Instruction::Add ||
2333 Opc == Instruction::Sub ||
2334 Opc == Instruction::Mul) {
2335 if (EatIfPresent(lltok::kw_nuw))
2337 if (EatIfPresent(lltok::kw_nsw)) {
2339 if (EatIfPresent(lltok::kw_nuw))
2342 } else if (Opc == Instruction::SDiv) {
2343 if (EatIfPresent(lltok::kw_exact))
2346 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2347 ParseGlobalTypeAndValue(Val0) ||
2348 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2349 ParseGlobalTypeAndValue(Val1) ||
2350 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2352 if (Val0->getType() != Val1->getType())
2353 return Error(ID.Loc, "operands of constexpr must have same type");
2354 if (!Val0->getType()->isIntOrIntVectorTy()) {
2356 return Error(ModifierLoc, "nuw only applies to integer operations");
2358 return Error(ModifierLoc, "nsw only applies to integer operations");
2360 // Check that the type is valid for the operator.
2362 case Instruction::Add:
2363 case Instruction::Sub:
2364 case Instruction::Mul:
2365 case Instruction::UDiv:
2366 case Instruction::SDiv:
2367 case Instruction::URem:
2368 case Instruction::SRem:
2369 if (!Val0->getType()->isIntOrIntVectorTy())
2370 return Error(ID.Loc, "constexpr requires integer operands");
2372 case Instruction::FAdd:
2373 case Instruction::FSub:
2374 case Instruction::FMul:
2375 case Instruction::FDiv:
2376 case Instruction::FRem:
2377 if (!Val0->getType()->isFPOrFPVectorTy())
2378 return Error(ID.Loc, "constexpr requires fp operands");
2380 default: llvm_unreachable("Unknown binary operator!");
2383 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2384 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2385 if (Exact) Flags |= SDivOperator::IsExact;
2386 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2388 ID.Kind = ValID::t_Constant;
2392 // Logical Operations
2394 case lltok::kw_lshr:
2395 case lltok::kw_ashr:
2398 case lltok::kw_xor: {
2399 unsigned Opc = Lex.getUIntVal();
2400 Constant *Val0, *Val1;
2402 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2403 ParseGlobalTypeAndValue(Val0) ||
2404 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2405 ParseGlobalTypeAndValue(Val1) ||
2406 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2408 if (Val0->getType() != Val1->getType())
2409 return Error(ID.Loc, "operands of constexpr must have same type");
2410 if (!Val0->getType()->isIntOrIntVectorTy())
2411 return Error(ID.Loc,
2412 "constexpr requires integer or integer vector operands");
2413 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2414 ID.Kind = ValID::t_Constant;
2418 case lltok::kw_getelementptr:
2419 case lltok::kw_shufflevector:
2420 case lltok::kw_insertelement:
2421 case lltok::kw_extractelement:
2422 case lltok::kw_select: {
2423 unsigned Opc = Lex.getUIntVal();
2424 SmallVector<Constant*, 16> Elts;
2425 bool InBounds = false;
2427 if (Opc == Instruction::GetElementPtr)
2428 InBounds = EatIfPresent(lltok::kw_inbounds);
2429 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2430 ParseGlobalValueVector(Elts) ||
2431 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2434 if (Opc == Instruction::GetElementPtr) {
2435 if (Elts.size() == 0 || !Elts[0]->getType()->isPointerTy())
2436 return Error(ID.Loc, "getelementptr requires pointer operand");
2438 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2439 (Value**)(Elts.data() + 1),
2441 return Error(ID.Loc, "invalid indices for getelementptr");
2442 ID.ConstantVal = InBounds ?
2443 ConstantExpr::getInBoundsGetElementPtr(Elts[0],
2446 ConstantExpr::getGetElementPtr(Elts[0],
2447 Elts.data() + 1, Elts.size() - 1);
2448 } else if (Opc == Instruction::Select) {
2449 if (Elts.size() != 3)
2450 return Error(ID.Loc, "expected three operands to select");
2451 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2453 return Error(ID.Loc, Reason);
2454 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2455 } else if (Opc == Instruction::ShuffleVector) {
2456 if (Elts.size() != 3)
2457 return Error(ID.Loc, "expected three operands to shufflevector");
2458 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2459 return Error(ID.Loc, "invalid operands to shufflevector");
2461 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2462 } else if (Opc == Instruction::ExtractElement) {
2463 if (Elts.size() != 2)
2464 return Error(ID.Loc, "expected two operands to extractelement");
2465 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2466 return Error(ID.Loc, "invalid extractelement operands");
2467 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2469 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2470 if (Elts.size() != 3)
2471 return Error(ID.Loc, "expected three operands to insertelement");
2472 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2473 return Error(ID.Loc, "invalid insertelement operands");
2475 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2478 ID.Kind = ValID::t_Constant;
2487 /// ParseGlobalValue - Parse a global value with the specified type.
2488 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&C) {
2492 bool Parsed = ParseValID(ID) ||
2493 ConvertValIDToValue(Ty, ID, V, NULL);
2494 if (V && !(C = dyn_cast<Constant>(V)))
2495 return Error(ID.Loc, "global values must be constants");
2499 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2500 PATypeHolder Type(Type::getVoidTy(Context));
2501 return ParseType(Type) ||
2502 ParseGlobalValue(Type, V);
2505 /// ParseGlobalValueVector
2507 /// ::= TypeAndValue (',' TypeAndValue)*
2508 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2510 if (Lex.getKind() == lltok::rbrace ||
2511 Lex.getKind() == lltok::rsquare ||
2512 Lex.getKind() == lltok::greater ||
2513 Lex.getKind() == lltok::rparen)
2517 if (ParseGlobalTypeAndValue(C)) return true;
2520 while (EatIfPresent(lltok::comma)) {
2521 if (ParseGlobalTypeAndValue(C)) return true;
2529 //===----------------------------------------------------------------------===//
2530 // Function Parsing.
2531 //===----------------------------------------------------------------------===//
2533 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2534 PerFunctionState *PFS) {
2535 if (Ty->isFunctionTy())
2536 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2539 default: llvm_unreachable("Unknown ValID!");
2540 case ValID::t_LocalID:
2541 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2542 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2544 case ValID::t_LocalName:
2545 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2546 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2548 case ValID::t_InlineAsm: {
2549 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2550 const FunctionType *FTy =
2551 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2552 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2553 return Error(ID.Loc, "invalid type for inline asm constraint string");
2554 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2557 case ValID::t_MDNode:
2558 if (!Ty->isMetadataTy())
2559 return Error(ID.Loc, "metadata value must have metadata type");
2562 case ValID::t_MDString:
2563 if (!Ty->isMetadataTy())
2564 return Error(ID.Loc, "metadata value must have metadata type");
2567 case ValID::t_GlobalName:
2568 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2570 case ValID::t_GlobalID:
2571 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2573 case ValID::t_APSInt:
2574 if (!Ty->isIntegerTy())
2575 return Error(ID.Loc, "integer constant must have integer type");
2576 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2577 V = ConstantInt::get(Context, ID.APSIntVal);
2579 case ValID::t_APFloat:
2580 if (!Ty->isFloatingPointTy() ||
2581 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2582 return Error(ID.Loc, "floating point constant invalid for type");
2584 // The lexer has no type info, so builds all float and double FP constants
2585 // as double. Fix this here. Long double does not need this.
2586 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2589 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2592 V = ConstantFP::get(Context, ID.APFloatVal);
2594 if (V->getType() != Ty)
2595 return Error(ID.Loc, "floating point constant does not have type '" +
2596 Ty->getDescription() + "'");
2600 if (!Ty->isPointerTy())
2601 return Error(ID.Loc, "null must be a pointer type");
2602 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2604 case ValID::t_Undef:
2605 // FIXME: LabelTy should not be a first-class type.
2606 if ((!Ty->isFirstClassType() || Ty->isLabelTy()) &&
2608 return Error(ID.Loc, "invalid type for undef constant");
2609 V = UndefValue::get(Ty);
2611 case ValID::t_EmptyArray:
2612 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2613 return Error(ID.Loc, "invalid empty array initializer");
2614 V = UndefValue::get(Ty);
2617 // FIXME: LabelTy should not be a first-class type.
2618 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2619 return Error(ID.Loc, "invalid type for null constant");
2620 V = Constant::getNullValue(Ty);
2622 case ValID::t_Constant:
2623 if (ID.ConstantVal->getType() != Ty) {
2624 // Allow a constant struct with a single member to be converted
2625 // to a union, if the union has a member which is the same type
2626 // as the struct member.
2627 if (const UnionType* utype = dyn_cast<UnionType>(Ty)) {
2628 return ParseUnionValue(utype, ID, V);
2631 return Error(ID.Loc, "constant expression type mismatch");
2639 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2642 return ParseValID(ID, &PFS) ||
2643 ConvertValIDToValue(Ty, ID, V, &PFS);
2646 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2647 PATypeHolder T(Type::getVoidTy(Context));
2648 return ParseType(T) ||
2649 ParseValue(T, V, PFS);
2652 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2653 PerFunctionState &PFS) {
2656 if (ParseTypeAndValue(V, PFS)) return true;
2657 if (!isa<BasicBlock>(V))
2658 return Error(Loc, "expected a basic block");
2659 BB = cast<BasicBlock>(V);
2663 bool LLParser::ParseUnionValue(const UnionType* utype, ValID &ID, Value *&V) {
2664 if (const StructType* stype = dyn_cast<StructType>(ID.ConstantVal->getType())) {
2665 if (stype->getNumContainedTypes() != 1)
2666 return Error(ID.Loc, "constant expression type mismatch");
2667 int index = utype->getElementTypeIndex(stype->getContainedType(0));
2669 return Error(ID.Loc, "initializer type is not a member of the union");
2671 V = ConstantUnion::get(
2672 utype, cast<Constant>(ID.ConstantVal->getOperand(0)));
2676 return Error(ID.Loc, "constant expression type mismatch");
2681 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2682 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2683 /// OptionalAlign OptGC
2684 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2685 // Parse the linkage.
2686 LocTy LinkageLoc = Lex.getLoc();
2689 unsigned Visibility, RetAttrs;
2691 PATypeHolder RetType(Type::getVoidTy(Context));
2692 LocTy RetTypeLoc = Lex.getLoc();
2693 if (ParseOptionalLinkage(Linkage) ||
2694 ParseOptionalVisibility(Visibility) ||
2695 ParseOptionalCallingConv(CC) ||
2696 ParseOptionalAttrs(RetAttrs, 1) ||
2697 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2700 // Verify that the linkage is ok.
2701 switch ((GlobalValue::LinkageTypes)Linkage) {
2702 case GlobalValue::ExternalLinkage:
2703 break; // always ok.
2704 case GlobalValue::DLLImportLinkage:
2705 case GlobalValue::ExternalWeakLinkage:
2707 return Error(LinkageLoc, "invalid linkage for function definition");
2709 case GlobalValue::PrivateLinkage:
2710 case GlobalValue::LinkerPrivateLinkage:
2711 case GlobalValue::LinkerWeakLinkage:
2712 case GlobalValue::InternalLinkage:
2713 case GlobalValue::AvailableExternallyLinkage:
2714 case GlobalValue::LinkOnceAnyLinkage:
2715 case GlobalValue::LinkOnceODRLinkage:
2716 case GlobalValue::WeakAnyLinkage:
2717 case GlobalValue::WeakODRLinkage:
2718 case GlobalValue::DLLExportLinkage:
2720 return Error(LinkageLoc, "invalid linkage for function declaration");
2722 case GlobalValue::AppendingLinkage:
2723 case GlobalValue::CommonLinkage:
2724 return Error(LinkageLoc, "invalid function linkage type");
2727 if (!FunctionType::isValidReturnType(RetType) ||
2728 RetType->isOpaqueTy())
2729 return Error(RetTypeLoc, "invalid function return type");
2731 LocTy NameLoc = Lex.getLoc();
2733 std::string FunctionName;
2734 if (Lex.getKind() == lltok::GlobalVar) {
2735 FunctionName = Lex.getStrVal();
2736 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2737 unsigned NameID = Lex.getUIntVal();
2739 if (NameID != NumberedVals.size())
2740 return TokError("function expected to be numbered '%" +
2741 utostr(NumberedVals.size()) + "'");
2743 return TokError("expected function name");
2748 if (Lex.getKind() != lltok::lparen)
2749 return TokError("expected '(' in function argument list");
2751 std::vector<ArgInfo> ArgList;
2754 std::string Section;
2758 if (ParseArgumentList(ArgList, isVarArg, false) ||
2759 ParseOptionalAttrs(FuncAttrs, 2) ||
2760 (EatIfPresent(lltok::kw_section) &&
2761 ParseStringConstant(Section)) ||
2762 ParseOptionalAlignment(Alignment) ||
2763 (EatIfPresent(lltok::kw_gc) &&
2764 ParseStringConstant(GC)))
2767 // If the alignment was parsed as an attribute, move to the alignment field.
2768 if (FuncAttrs & Attribute::Alignment) {
2769 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2770 FuncAttrs &= ~Attribute::Alignment;
2773 // Okay, if we got here, the function is syntactically valid. Convert types
2774 // and do semantic checks.
2775 std::vector<const Type*> ParamTypeList;
2776 SmallVector<AttributeWithIndex, 8> Attrs;
2777 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2779 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2780 if (FuncAttrs & ObsoleteFuncAttrs) {
2781 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2782 FuncAttrs &= ~ObsoleteFuncAttrs;
2785 if (RetAttrs != Attribute::None)
2786 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2788 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2789 ParamTypeList.push_back(ArgList[i].Type);
2790 if (ArgList[i].Attrs != Attribute::None)
2791 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2794 if (FuncAttrs != Attribute::None)
2795 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2797 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2799 if (PAL.paramHasAttr(1, Attribute::StructRet) && !RetType->isVoidTy())
2800 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2802 const FunctionType *FT =
2803 FunctionType::get(RetType, ParamTypeList, isVarArg);
2804 const PointerType *PFT = PointerType::getUnqual(FT);
2807 if (!FunctionName.empty()) {
2808 // If this was a definition of a forward reference, remove the definition
2809 // from the forward reference table and fill in the forward ref.
2810 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2811 ForwardRefVals.find(FunctionName);
2812 if (FRVI != ForwardRefVals.end()) {
2813 Fn = M->getFunction(FunctionName);
2814 if (Fn->getType() != PFT)
2815 return Error(FRVI->second.second, "invalid forward reference to "
2816 "function '" + FunctionName + "' with wrong type!");
2818 ForwardRefVals.erase(FRVI);
2819 } else if ((Fn = M->getFunction(FunctionName))) {
2820 // If this function already exists in the symbol table, then it is
2821 // multiply defined. We accept a few cases for old backwards compat.
2822 // FIXME: Remove this stuff for LLVM 3.0.
2823 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2824 (!Fn->isDeclaration() && isDefine)) {
2825 // If the redefinition has different type or different attributes,
2826 // reject it. If both have bodies, reject it.
2827 return Error(NameLoc, "invalid redefinition of function '" +
2828 FunctionName + "'");
2829 } else if (Fn->isDeclaration()) {
2830 // Make sure to strip off any argument names so we can't get conflicts.
2831 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2835 } else if (M->getNamedValue(FunctionName)) {
2836 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2840 // If this is a definition of a forward referenced function, make sure the
2842 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2843 = ForwardRefValIDs.find(NumberedVals.size());
2844 if (I != ForwardRefValIDs.end()) {
2845 Fn = cast<Function>(I->second.first);
2846 if (Fn->getType() != PFT)
2847 return Error(NameLoc, "type of definition and forward reference of '@" +
2848 utostr(NumberedVals.size()) +"' disagree");
2849 ForwardRefValIDs.erase(I);
2854 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2855 else // Move the forward-reference to the correct spot in the module.
2856 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2858 if (FunctionName.empty())
2859 NumberedVals.push_back(Fn);
2861 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2862 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2863 Fn->setCallingConv(CC);
2864 Fn->setAttributes(PAL);
2865 Fn->setAlignment(Alignment);
2866 Fn->setSection(Section);
2867 if (!GC.empty()) Fn->setGC(GC.c_str());
2869 // Add all of the arguments we parsed to the function.
2870 Function::arg_iterator ArgIt = Fn->arg_begin();
2871 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2872 // If we run out of arguments in the Function prototype, exit early.
2873 // FIXME: REMOVE THIS IN LLVM 3.0, this is just for the mismatch case above.
2874 if (ArgIt == Fn->arg_end()) break;
2876 // If the argument has a name, insert it into the argument symbol table.
2877 if (ArgList[i].Name.empty()) continue;
2879 // Set the name, if it conflicted, it will be auto-renamed.
2880 ArgIt->setName(ArgList[i].Name);
2882 if (ArgIt->getNameStr() != ArgList[i].Name)
2883 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2884 ArgList[i].Name + "'");
2891 /// ParseFunctionBody
2892 /// ::= '{' BasicBlock+ '}'
2893 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2895 bool LLParser::ParseFunctionBody(Function &Fn) {
2896 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2897 return TokError("expected '{' in function body");
2898 Lex.Lex(); // eat the {.
2900 int FunctionNumber = -1;
2901 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2903 PerFunctionState PFS(*this, Fn, FunctionNumber);
2905 // We need at least one basic block.
2906 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_end)
2907 return TokError("function body requires at least one basic block");
2909 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2910 if (ParseBasicBlock(PFS)) return true;
2915 // Verify function is ok.
2916 return PFS.FinishFunction();
2920 /// ::= LabelStr? Instruction*
2921 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2922 // If this basic block starts out with a name, remember it.
2924 LocTy NameLoc = Lex.getLoc();
2925 if (Lex.getKind() == lltok::LabelStr) {
2926 Name = Lex.getStrVal();
2930 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2931 if (BB == 0) return true;
2933 std::string NameStr;
2935 // Parse the instructions in this block until we get a terminator.
2937 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2939 // This instruction may have three possibilities for a name: a) none
2940 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2941 LocTy NameLoc = Lex.getLoc();
2945 if (Lex.getKind() == lltok::LocalVarID) {
2946 NameID = Lex.getUIntVal();
2948 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2950 } else if (Lex.getKind() == lltok::LocalVar ||
2951 // FIXME: REMOVE IN LLVM 3.0
2952 Lex.getKind() == lltok::StringConstant) {
2953 NameStr = Lex.getStrVal();
2955 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2959 switch (ParseInstruction(Inst, BB, PFS)) {
2960 default: assert(0 && "Unknown ParseInstruction result!");
2961 case InstError: return true;
2963 BB->getInstList().push_back(Inst);
2965 // With a normal result, we check to see if the instruction is followed by
2966 // a comma and metadata.
2967 if (EatIfPresent(lltok::comma))
2968 if (ParseInstructionMetadata(Inst))
2971 case InstExtraComma:
2972 BB->getInstList().push_back(Inst);
2974 // If the instruction parser ate an extra comma at the end of it, it
2975 // *must* be followed by metadata.
2976 if (ParseInstructionMetadata(Inst))
2981 // Set the name on the instruction.
2982 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2983 } while (!isa<TerminatorInst>(Inst));
2988 //===----------------------------------------------------------------------===//
2989 // Instruction Parsing.
2990 //===----------------------------------------------------------------------===//
2992 /// ParseInstruction - Parse one of the many different instructions.
2994 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2995 PerFunctionState &PFS) {
2996 lltok::Kind Token = Lex.getKind();
2997 if (Token == lltok::Eof)
2998 return TokError("found end of file when expecting more instructions");
2999 LocTy Loc = Lex.getLoc();
3000 unsigned KeywordVal = Lex.getUIntVal();
3001 Lex.Lex(); // Eat the keyword.
3004 default: return Error(Loc, "expected instruction opcode");
3005 // Terminator Instructions.
3006 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
3007 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3008 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3009 case lltok::kw_br: return ParseBr(Inst, PFS);
3010 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3011 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3012 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3013 // Binary Operators.
3016 case lltok::kw_mul: {
3019 LocTy ModifierLoc = Lex.getLoc();
3020 if (EatIfPresent(lltok::kw_nuw))
3022 if (EatIfPresent(lltok::kw_nsw)) {
3024 if (EatIfPresent(lltok::kw_nuw))
3027 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3029 if (!Inst->getType()->isIntOrIntVectorTy()) {
3031 return Error(ModifierLoc, "nuw only applies to integer operations");
3033 return Error(ModifierLoc, "nsw only applies to integer operations");
3036 cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3038 cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3042 case lltok::kw_fadd:
3043 case lltok::kw_fsub:
3044 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3046 case lltok::kw_sdiv: {
3048 if (EatIfPresent(lltok::kw_exact))
3050 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3053 cast<BinaryOperator>(Inst)->setIsExact(true);
3057 case lltok::kw_udiv:
3058 case lltok::kw_urem:
3059 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3060 case lltok::kw_fdiv:
3061 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3063 case lltok::kw_lshr:
3064 case lltok::kw_ashr:
3067 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3068 case lltok::kw_icmp:
3069 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3071 case lltok::kw_trunc:
3072 case lltok::kw_zext:
3073 case lltok::kw_sext:
3074 case lltok::kw_fptrunc:
3075 case lltok::kw_fpext:
3076 case lltok::kw_bitcast:
3077 case lltok::kw_uitofp:
3078 case lltok::kw_sitofp:
3079 case lltok::kw_fptoui:
3080 case lltok::kw_fptosi:
3081 case lltok::kw_inttoptr:
3082 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3084 case lltok::kw_select: return ParseSelect(Inst, PFS);
3085 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3086 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3087 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3088 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3089 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3090 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3091 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3093 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3094 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, BB, false);
3095 case lltok::kw_free: return ParseFree(Inst, PFS, BB);
3096 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
3097 case lltok::kw_store: return ParseStore(Inst, PFS, false);
3098 case lltok::kw_volatile:
3099 if (EatIfPresent(lltok::kw_load))
3100 return ParseLoad(Inst, PFS, true);
3101 else if (EatIfPresent(lltok::kw_store))
3102 return ParseStore(Inst, PFS, true);
3104 return TokError("expected 'load' or 'store'");
3105 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
3106 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3107 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3108 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3112 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3113 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3114 if (Opc == Instruction::FCmp) {
3115 switch (Lex.getKind()) {
3116 default: TokError("expected fcmp predicate (e.g. 'oeq')");
3117 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3118 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3119 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3120 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3121 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3122 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3123 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3124 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3125 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3126 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3127 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3128 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3129 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3130 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3131 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3132 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3135 switch (Lex.getKind()) {
3136 default: TokError("expected icmp predicate (e.g. 'eq')");
3137 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3138 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3139 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3140 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3141 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3142 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3143 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3144 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3145 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3146 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3153 //===----------------------------------------------------------------------===//
3154 // Terminator Instructions.
3155 //===----------------------------------------------------------------------===//
3157 /// ParseRet - Parse a return instruction.
3158 /// ::= 'ret' void (',' !dbg, !1)*
3159 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3160 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ (',' !dbg, !1)*
3161 /// [[obsolete: LLVM 3.0]]
3162 int LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3163 PerFunctionState &PFS) {
3164 PATypeHolder Ty(Type::getVoidTy(Context));
3165 if (ParseType(Ty, true /*void allowed*/)) return true;
3167 if (Ty->isVoidTy()) {
3168 Inst = ReturnInst::Create(Context);
3173 if (ParseValue(Ty, RV, PFS)) return true;
3175 bool ExtraComma = false;
3176 if (EatIfPresent(lltok::comma)) {
3177 // Parse optional custom metadata, e.g. !dbg
3178 if (Lex.getKind() == lltok::MetadataVar) {
3181 // The normal case is one return value.
3182 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring
3183 // use of 'ret {i32,i32} {i32 1, i32 2}'
3184 SmallVector<Value*, 8> RVs;
3188 // If optional custom metadata, e.g. !dbg is seen then this is the
3190 if (Lex.getKind() == lltok::MetadataVar)
3192 if (ParseTypeAndValue(RV, PFS)) return true;
3194 } while (EatIfPresent(lltok::comma));
3196 RV = UndefValue::get(PFS.getFunction().getReturnType());
3197 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
3198 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
3199 BB->getInstList().push_back(I);
3205 Inst = ReturnInst::Create(Context, RV);
3206 return ExtraComma ? InstExtraComma : InstNormal;
3211 /// ::= 'br' TypeAndValue
3212 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3213 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3216 BasicBlock *Op1, *Op2;
3217 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3219 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3220 Inst = BranchInst::Create(BB);
3224 if (Op0->getType() != Type::getInt1Ty(Context))
3225 return Error(Loc, "branch condition must have 'i1' type");
3227 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3228 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3229 ParseToken(lltok::comma, "expected ',' after true destination") ||
3230 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3233 Inst = BranchInst::Create(Op1, Op2, Op0);
3239 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3241 /// ::= (TypeAndValue ',' TypeAndValue)*
3242 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3243 LocTy CondLoc, BBLoc;
3245 BasicBlock *DefaultBB;
3246 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3247 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3248 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3249 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3252 if (!Cond->getType()->isIntegerTy())
3253 return Error(CondLoc, "switch condition must have integer type");
3255 // Parse the jump table pairs.
3256 SmallPtrSet<Value*, 32> SeenCases;
3257 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3258 while (Lex.getKind() != lltok::rsquare) {
3262 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3263 ParseToken(lltok::comma, "expected ',' after case value") ||
3264 ParseTypeAndBasicBlock(DestBB, PFS))
3267 if (!SeenCases.insert(Constant))
3268 return Error(CondLoc, "duplicate case value in switch");
3269 if (!isa<ConstantInt>(Constant))
3270 return Error(CondLoc, "case value is not a constant integer");
3272 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3275 Lex.Lex(); // Eat the ']'.
3277 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3278 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3279 SI->addCase(Table[i].first, Table[i].second);
3286 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3287 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3290 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3291 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3292 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3295 if (!Address->getType()->isPointerTy())
3296 return Error(AddrLoc, "indirectbr address must have pointer type");
3298 // Parse the destination list.
3299 SmallVector<BasicBlock*, 16> DestList;
3301 if (Lex.getKind() != lltok::rsquare) {
3303 if (ParseTypeAndBasicBlock(DestBB, PFS))
3305 DestList.push_back(DestBB);
3307 while (EatIfPresent(lltok::comma)) {
3308 if (ParseTypeAndBasicBlock(DestBB, PFS))
3310 DestList.push_back(DestBB);
3314 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3317 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3318 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3319 IBI->addDestination(DestList[i]);
3326 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3327 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3328 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3329 LocTy CallLoc = Lex.getLoc();
3330 unsigned RetAttrs, FnAttrs;
3332 PATypeHolder RetType(Type::getVoidTy(Context));
3335 SmallVector<ParamInfo, 16> ArgList;
3337 BasicBlock *NormalBB, *UnwindBB;
3338 if (ParseOptionalCallingConv(CC) ||
3339 ParseOptionalAttrs(RetAttrs, 1) ||
3340 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3341 ParseValID(CalleeID) ||
3342 ParseParameterList(ArgList, PFS) ||
3343 ParseOptionalAttrs(FnAttrs, 2) ||
3344 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3345 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3346 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3347 ParseTypeAndBasicBlock(UnwindBB, PFS))
3350 // If RetType is a non-function pointer type, then this is the short syntax
3351 // for the call, which means that RetType is just the return type. Infer the
3352 // rest of the function argument types from the arguments that are present.
3353 const PointerType *PFTy = 0;
3354 const FunctionType *Ty = 0;
3355 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3356 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3357 // Pull out the types of all of the arguments...
3358 std::vector<const Type*> ParamTypes;
3359 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3360 ParamTypes.push_back(ArgList[i].V->getType());
3362 if (!FunctionType::isValidReturnType(RetType))
3363 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3365 Ty = FunctionType::get(RetType, ParamTypes, false);
3366 PFTy = PointerType::getUnqual(Ty);
3369 // Look up the callee.
3371 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3373 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3374 // function attributes.
3375 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3376 if (FnAttrs & ObsoleteFuncAttrs) {
3377 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3378 FnAttrs &= ~ObsoleteFuncAttrs;
3381 // Set up the Attributes for the function.
3382 SmallVector<AttributeWithIndex, 8> Attrs;
3383 if (RetAttrs != Attribute::None)
3384 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3386 SmallVector<Value*, 8> Args;
3388 // Loop through FunctionType's arguments and ensure they are specified
3389 // correctly. Also, gather any parameter attributes.
3390 FunctionType::param_iterator I = Ty->param_begin();
3391 FunctionType::param_iterator E = Ty->param_end();
3392 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3393 const Type *ExpectedTy = 0;
3396 } else if (!Ty->isVarArg()) {
3397 return Error(ArgList[i].Loc, "too many arguments specified");
3400 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3401 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3402 ExpectedTy->getDescription() + "'");
3403 Args.push_back(ArgList[i].V);
3404 if (ArgList[i].Attrs != Attribute::None)
3405 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3409 return Error(CallLoc, "not enough parameters specified for call");
3411 if (FnAttrs != Attribute::None)
3412 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3414 // Finish off the Attributes and check them
3415 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3417 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB,
3418 Args.begin(), Args.end());
3419 II->setCallingConv(CC);
3420 II->setAttributes(PAL);
3427 //===----------------------------------------------------------------------===//
3428 // Binary Operators.
3429 //===----------------------------------------------------------------------===//
3432 /// ::= ArithmeticOps TypeAndValue ',' Value
3434 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3435 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3436 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3437 unsigned Opc, unsigned OperandType) {
3438 LocTy Loc; Value *LHS, *RHS;
3439 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3440 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3441 ParseValue(LHS->getType(), RHS, PFS))
3445 switch (OperandType) {
3446 default: llvm_unreachable("Unknown operand type!");
3447 case 0: // int or FP.
3448 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3449 LHS->getType()->isFPOrFPVectorTy();
3451 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3452 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3456 return Error(Loc, "invalid operand type for instruction");
3458 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3463 /// ::= ArithmeticOps TypeAndValue ',' Value {
3464 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3466 LocTy Loc; Value *LHS, *RHS;
3467 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3468 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3469 ParseValue(LHS->getType(), RHS, PFS))
3472 if (!LHS->getType()->isIntOrIntVectorTy())
3473 return Error(Loc,"instruction requires integer or integer vector operands");
3475 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3481 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3482 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3483 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3485 // Parse the integer/fp comparison predicate.
3489 if (ParseCmpPredicate(Pred, Opc) ||
3490 ParseTypeAndValue(LHS, Loc, PFS) ||
3491 ParseToken(lltok::comma, "expected ',' after compare value") ||
3492 ParseValue(LHS->getType(), RHS, PFS))
3495 if (Opc == Instruction::FCmp) {
3496 if (!LHS->getType()->isFPOrFPVectorTy())
3497 return Error(Loc, "fcmp requires floating point operands");
3498 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3500 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3501 if (!LHS->getType()->isIntOrIntVectorTy() &&
3502 !LHS->getType()->isPointerTy())
3503 return Error(Loc, "icmp requires integer operands");
3504 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3509 //===----------------------------------------------------------------------===//
3510 // Other Instructions.
3511 //===----------------------------------------------------------------------===//
3515 /// ::= CastOpc TypeAndValue 'to' Type
3516 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3518 LocTy Loc; Value *Op;
3519 PATypeHolder DestTy(Type::getVoidTy(Context));
3520 if (ParseTypeAndValue(Op, Loc, PFS) ||
3521 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3525 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3526 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3527 return Error(Loc, "invalid cast opcode for cast from '" +
3528 Op->getType()->getDescription() + "' to '" +
3529 DestTy->getDescription() + "'");
3531 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3536 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3537 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3539 Value *Op0, *Op1, *Op2;
3540 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3541 ParseToken(lltok::comma, "expected ',' after select condition") ||
3542 ParseTypeAndValue(Op1, PFS) ||
3543 ParseToken(lltok::comma, "expected ',' after select value") ||
3544 ParseTypeAndValue(Op2, PFS))
3547 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3548 return Error(Loc, Reason);
3550 Inst = SelectInst::Create(Op0, Op1, Op2);
3555 /// ::= 'va_arg' TypeAndValue ',' Type
3556 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3558 PATypeHolder EltTy(Type::getVoidTy(Context));
3560 if (ParseTypeAndValue(Op, PFS) ||
3561 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3562 ParseType(EltTy, TypeLoc))
3565 if (!EltTy->isFirstClassType())
3566 return Error(TypeLoc, "va_arg requires operand with first class type");
3568 Inst = new VAArgInst(Op, EltTy);
3572 /// ParseExtractElement
3573 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3574 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3577 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3578 ParseToken(lltok::comma, "expected ',' after extract value") ||
3579 ParseTypeAndValue(Op1, PFS))
3582 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3583 return Error(Loc, "invalid extractelement operands");
3585 Inst = ExtractElementInst::Create(Op0, Op1);
3589 /// ParseInsertElement
3590 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3591 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3593 Value *Op0, *Op1, *Op2;
3594 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3595 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3596 ParseTypeAndValue(Op1, PFS) ||
3597 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3598 ParseTypeAndValue(Op2, PFS))
3601 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3602 return Error(Loc, "invalid insertelement operands");
3604 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3608 /// ParseShuffleVector
3609 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3610 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3612 Value *Op0, *Op1, *Op2;
3613 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3614 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3615 ParseTypeAndValue(Op1, PFS) ||
3616 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3617 ParseTypeAndValue(Op2, PFS))
3620 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3621 return Error(Loc, "invalid extractelement operands");
3623 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3628 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3629 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3630 PATypeHolder Ty(Type::getVoidTy(Context));
3632 LocTy TypeLoc = Lex.getLoc();
3634 if (ParseType(Ty) ||
3635 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3636 ParseValue(Ty, Op0, PFS) ||
3637 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3638 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3639 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3642 bool AteExtraComma = false;
3643 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3645 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3647 if (!EatIfPresent(lltok::comma))
3650 if (Lex.getKind() == lltok::MetadataVar) {
3651 AteExtraComma = true;
3655 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3656 ParseValue(Ty, Op0, PFS) ||
3657 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3658 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3659 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3663 if (!Ty->isFirstClassType())
3664 return Error(TypeLoc, "phi node must have first class type");
3666 PHINode *PN = PHINode::Create(Ty);
3667 PN->reserveOperandSpace(PHIVals.size());
3668 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3669 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3671 return AteExtraComma ? InstExtraComma : InstNormal;
3675 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3676 /// ParameterList OptionalAttrs
3677 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3679 unsigned RetAttrs, FnAttrs;
3681 PATypeHolder RetType(Type::getVoidTy(Context));
3684 SmallVector<ParamInfo, 16> ArgList;
3685 LocTy CallLoc = Lex.getLoc();
3687 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3688 ParseOptionalCallingConv(CC) ||
3689 ParseOptionalAttrs(RetAttrs, 1) ||
3690 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3691 ParseValID(CalleeID) ||
3692 ParseParameterList(ArgList, PFS) ||
3693 ParseOptionalAttrs(FnAttrs, 2))
3696 // If RetType is a non-function pointer type, then this is the short syntax
3697 // for the call, which means that RetType is just the return type. Infer the
3698 // rest of the function argument types from the arguments that are present.
3699 const PointerType *PFTy = 0;
3700 const FunctionType *Ty = 0;
3701 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3702 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3703 // Pull out the types of all of the arguments...
3704 std::vector<const Type*> ParamTypes;
3705 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3706 ParamTypes.push_back(ArgList[i].V->getType());
3708 if (!FunctionType::isValidReturnType(RetType))
3709 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3711 Ty = FunctionType::get(RetType, ParamTypes, false);
3712 PFTy = PointerType::getUnqual(Ty);
3715 // Look up the callee.
3717 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3719 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3720 // function attributes.
3721 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3722 if (FnAttrs & ObsoleteFuncAttrs) {
3723 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3724 FnAttrs &= ~ObsoleteFuncAttrs;
3727 // Set up the Attributes for the function.
3728 SmallVector<AttributeWithIndex, 8> Attrs;
3729 if (RetAttrs != Attribute::None)
3730 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3732 SmallVector<Value*, 8> Args;
3734 // Loop through FunctionType's arguments and ensure they are specified
3735 // correctly. Also, gather any parameter attributes.
3736 FunctionType::param_iterator I = Ty->param_begin();
3737 FunctionType::param_iterator E = Ty->param_end();
3738 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3739 const Type *ExpectedTy = 0;
3742 } else if (!Ty->isVarArg()) {
3743 return Error(ArgList[i].Loc, "too many arguments specified");
3746 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3747 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3748 ExpectedTy->getDescription() + "'");
3749 Args.push_back(ArgList[i].V);
3750 if (ArgList[i].Attrs != Attribute::None)
3751 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3755 return Error(CallLoc, "not enough parameters specified for call");
3757 if (FnAttrs != Attribute::None)
3758 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3760 // Finish off the Attributes and check them
3761 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3763 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3764 CI->setTailCall(isTail);
3765 CI->setCallingConv(CC);
3766 CI->setAttributes(PAL);
3771 //===----------------------------------------------------------------------===//
3772 // Memory Instructions.
3773 //===----------------------------------------------------------------------===//
3776 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalInfo)?
3777 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3778 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3779 BasicBlock* BB, bool isAlloca) {
3780 PATypeHolder Ty(Type::getVoidTy(Context));
3783 unsigned Alignment = 0;
3784 if (ParseType(Ty)) return true;
3786 bool AteExtraComma = false;
3787 if (EatIfPresent(lltok::comma)) {
3788 if (Lex.getKind() == lltok::kw_align) {
3789 if (ParseOptionalAlignment(Alignment)) return true;
3790 } else if (Lex.getKind() == lltok::MetadataVar) {
3791 AteExtraComma = true;
3793 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3794 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3799 if (Size && !Size->getType()->isIntegerTy())
3800 return Error(SizeLoc, "element count must have integer type");
3803 Inst = new AllocaInst(Ty, Size, Alignment);
3804 return AteExtraComma ? InstExtraComma : InstNormal;
3807 // Autoupgrade old malloc instruction to malloc call.
3808 // FIXME: Remove in LLVM 3.0.
3809 if (Size && !Size->getType()->isIntegerTy(32))
3810 return Error(SizeLoc, "element count must be i32");
3811 const Type *IntPtrTy = Type::getInt32Ty(Context);
3812 Constant *AllocSize = ConstantExpr::getSizeOf(Ty);
3813 AllocSize = ConstantExpr::getTruncOrBitCast(AllocSize, IntPtrTy);
3815 // Prototype malloc as "void *(int32)".
3816 // This function is renamed as "malloc" in ValidateEndOfModule().
3817 MallocF = cast<Function>(
3818 M->getOrInsertFunction("", Type::getInt8PtrTy(Context), IntPtrTy, NULL));
3819 Inst = CallInst::CreateMalloc(BB, IntPtrTy, Ty, AllocSize, Size, MallocF);
3820 return AteExtraComma ? InstExtraComma : InstNormal;
3824 /// ::= 'free' TypeAndValue
3825 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS,
3827 Value *Val; LocTy Loc;
3828 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3829 if (!Val->getType()->isPointerTy())
3830 return Error(Loc, "operand to free must be a pointer");
3831 Inst = CallInst::CreateFree(Val, BB);
3836 /// ::= 'volatile'? 'load' TypeAndValue (',' OptionalInfo)?
3837 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3839 Value *Val; LocTy Loc;
3840 unsigned Alignment = 0;
3841 bool AteExtraComma = false;
3842 if (ParseTypeAndValue(Val, Loc, PFS) ||
3843 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3846 if (!Val->getType()->isPointerTy() ||
3847 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3848 return Error(Loc, "load operand must be a pointer to a first class type");
3850 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3851 return AteExtraComma ? InstExtraComma : InstNormal;
3855 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3856 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3858 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3859 unsigned Alignment = 0;
3860 bool AteExtraComma = false;
3861 if (ParseTypeAndValue(Val, Loc, PFS) ||
3862 ParseToken(lltok::comma, "expected ',' after store operand") ||
3863 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3864 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3867 if (!Ptr->getType()->isPointerTy())
3868 return Error(PtrLoc, "store operand must be a pointer");
3869 if (!Val->getType()->isFirstClassType())
3870 return Error(Loc, "store operand must be a first class value");
3871 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3872 return Error(Loc, "stored value and pointer type do not match");
3874 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3875 return AteExtraComma ? InstExtraComma : InstNormal;
3879 /// ::= 'getresult' TypeAndValue ',' i32
3880 /// FIXME: Remove support for getresult in LLVM 3.0
3881 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3882 Value *Val; LocTy ValLoc, EltLoc;
3884 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3885 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3886 ParseUInt32(Element, EltLoc))
3889 if (!Val->getType()->isStructTy() && !Val->getType()->isArrayTy())
3890 return Error(ValLoc, "getresult inst requires an aggregate operand");
3891 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3892 return Error(EltLoc, "invalid getresult index for value");
3893 Inst = ExtractValueInst::Create(Val, Element);
3897 /// ParseGetElementPtr
3898 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3899 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3900 Value *Ptr, *Val; LocTy Loc, EltLoc;
3902 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3904 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3906 if (!Ptr->getType()->isPointerTy())
3907 return Error(Loc, "base of getelementptr must be a pointer");
3909 SmallVector<Value*, 16> Indices;
3910 bool AteExtraComma = false;
3911 while (EatIfPresent(lltok::comma)) {
3912 if (Lex.getKind() == lltok::MetadataVar) {
3913 AteExtraComma = true;
3916 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3917 if (!Val->getType()->isIntegerTy())
3918 return Error(EltLoc, "getelementptr index must be an integer");
3919 Indices.push_back(Val);
3922 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3923 Indices.begin(), Indices.end()))
3924 return Error(Loc, "invalid getelementptr indices");
3925 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3927 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3928 return AteExtraComma ? InstExtraComma : InstNormal;
3931 /// ParseExtractValue
3932 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3933 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3934 Value *Val; LocTy Loc;
3935 SmallVector<unsigned, 4> Indices;
3937 if (ParseTypeAndValue(Val, Loc, PFS) ||
3938 ParseIndexList(Indices, AteExtraComma))
3941 if (!Val->getType()->isAggregateType())
3942 return Error(Loc, "extractvalue operand must be aggregate type");
3944 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3946 return Error(Loc, "invalid indices for extractvalue");
3947 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3948 return AteExtraComma ? InstExtraComma : InstNormal;
3951 /// ParseInsertValue
3952 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3953 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3954 Value *Val0, *Val1; LocTy Loc0, Loc1;
3955 SmallVector<unsigned, 4> Indices;
3957 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3958 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3959 ParseTypeAndValue(Val1, Loc1, PFS) ||
3960 ParseIndexList(Indices, AteExtraComma))
3963 if (!Val0->getType()->isAggregateType())
3964 return Error(Loc0, "insertvalue operand must be aggregate type");
3966 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3968 return Error(Loc0, "invalid indices for insertvalue");
3969 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3970 return AteExtraComma ? InstExtraComma : InstNormal;
3973 //===----------------------------------------------------------------------===//
3974 // Embedded metadata.
3975 //===----------------------------------------------------------------------===//
3977 /// ParseMDNodeVector
3978 /// ::= Element (',' Element)*
3980 /// ::= 'null' | TypeAndValue
3981 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
3982 PerFunctionState *PFS) {
3984 // Null is a special case since it is typeless.
3985 if (EatIfPresent(lltok::kw_null)) {
3991 PATypeHolder Ty(Type::getVoidTy(Context));
3993 if (ParseType(Ty) || ParseValID(ID, PFS) ||
3994 ConvertValIDToValue(Ty, ID, V, PFS))
3998 } while (EatIfPresent(lltok::comma));