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_internal: // OptionalLinkage
202 case lltok::kw_weak: // OptionalLinkage
203 case lltok::kw_weak_odr: // OptionalLinkage
204 case lltok::kw_linkonce: // OptionalLinkage
205 case lltok::kw_linkonce_odr: // OptionalLinkage
206 case lltok::kw_appending: // OptionalLinkage
207 case lltok::kw_dllexport: // OptionalLinkage
208 case lltok::kw_common: // OptionalLinkage
209 case lltok::kw_dllimport: // OptionalLinkage
210 case lltok::kw_extern_weak: // OptionalLinkage
211 case lltok::kw_external: { // OptionalLinkage
212 unsigned Linkage, Visibility;
213 if (ParseOptionalLinkage(Linkage) ||
214 ParseOptionalVisibility(Visibility) ||
215 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
219 case lltok::kw_default: // OptionalVisibility
220 case lltok::kw_hidden: // OptionalVisibility
221 case lltok::kw_protected: { // OptionalVisibility
223 if (ParseOptionalVisibility(Visibility) ||
224 ParseGlobal("", SMLoc(), 0, false, Visibility))
229 case lltok::kw_thread_local: // OptionalThreadLocal
230 case lltok::kw_addrspace: // OptionalAddrSpace
231 case lltok::kw_constant: // GlobalType
232 case lltok::kw_global: // GlobalType
233 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
241 /// ::= 'module' 'asm' STRINGCONSTANT
242 bool LLParser::ParseModuleAsm() {
243 assert(Lex.getKind() == lltok::kw_module);
247 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
248 ParseStringConstant(AsmStr)) return true;
250 const std::string &AsmSoFar = M->getModuleInlineAsm();
251 if (AsmSoFar.empty())
252 M->setModuleInlineAsm(AsmStr);
254 M->setModuleInlineAsm(AsmSoFar+"\n"+AsmStr);
259 /// ::= 'target' 'triple' '=' STRINGCONSTANT
260 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
261 bool LLParser::ParseTargetDefinition() {
262 assert(Lex.getKind() == lltok::kw_target);
265 default: return TokError("unknown target property");
266 case lltok::kw_triple:
268 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
269 ParseStringConstant(Str))
271 M->setTargetTriple(Str);
273 case lltok::kw_datalayout:
275 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
276 ParseStringConstant(Str))
278 M->setDataLayout(Str);
284 /// ::= 'deplibs' '=' '[' ']'
285 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
286 bool LLParser::ParseDepLibs() {
287 assert(Lex.getKind() == lltok::kw_deplibs);
289 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
290 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
293 if (EatIfPresent(lltok::rsquare))
297 if (ParseStringConstant(Str)) return true;
300 while (EatIfPresent(lltok::comma)) {
301 if (ParseStringConstant(Str)) return true;
305 return ParseToken(lltok::rsquare, "expected ']' at end of list");
308 /// ParseUnnamedType:
310 /// ::= LocalVarID '=' 'type' type
311 bool LLParser::ParseUnnamedType() {
312 unsigned TypeID = NumberedTypes.size();
314 // Handle the LocalVarID form.
315 if (Lex.getKind() == lltok::LocalVarID) {
316 if (Lex.getUIntVal() != TypeID)
317 return Error(Lex.getLoc(), "type expected to be numbered '%" +
318 utostr(TypeID) + "'");
319 Lex.Lex(); // eat LocalVarID;
321 if (ParseToken(lltok::equal, "expected '=' after name"))
325 LocTy TypeLoc = Lex.getLoc();
326 if (ParseToken(lltok::kw_type, "expected 'type' after '='")) return true;
328 PATypeHolder Ty(Type::getVoidTy(Context));
329 if (ParseType(Ty)) return true;
331 // See if this type was previously referenced.
332 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
333 FI = ForwardRefTypeIDs.find(TypeID);
334 if (FI != ForwardRefTypeIDs.end()) {
335 if (FI->second.first.get() == Ty)
336 return Error(TypeLoc, "self referential type is invalid");
338 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
339 Ty = FI->second.first.get();
340 ForwardRefTypeIDs.erase(FI);
343 NumberedTypes.push_back(Ty);
349 /// ::= LocalVar '=' 'type' type
350 bool LLParser::ParseNamedType() {
351 std::string Name = Lex.getStrVal();
352 LocTy NameLoc = Lex.getLoc();
353 Lex.Lex(); // eat LocalVar.
355 PATypeHolder Ty(Type::getVoidTy(Context));
357 if (ParseToken(lltok::equal, "expected '=' after name") ||
358 ParseToken(lltok::kw_type, "expected 'type' after name") ||
362 // Set the type name, checking for conflicts as we do so.
363 bool AlreadyExists = M->addTypeName(Name, Ty);
364 if (!AlreadyExists) return false;
366 // See if this type is a forward reference. We need to eagerly resolve
367 // types to allow recursive type redefinitions below.
368 std::map<std::string, std::pair<PATypeHolder, LocTy> >::iterator
369 FI = ForwardRefTypes.find(Name);
370 if (FI != ForwardRefTypes.end()) {
371 if (FI->second.first.get() == Ty)
372 return Error(NameLoc, "self referential type is invalid");
374 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
375 Ty = FI->second.first.get();
376 ForwardRefTypes.erase(FI);
379 // Inserting a name that is already defined, get the existing name.
380 const Type *Existing = M->getTypeByName(Name);
381 assert(Existing && "Conflict but no matching type?!");
383 // Otherwise, this is an attempt to redefine a type. That's okay if
384 // the redefinition is identical to the original.
385 // FIXME: REMOVE REDEFINITIONS IN LLVM 3.0
386 if (Existing == Ty) return false;
388 // Any other kind of (non-equivalent) redefinition is an error.
389 return Error(NameLoc, "redefinition of type named '" + Name + "' of type '" +
390 Ty->getDescription() + "'");
395 /// ::= 'declare' FunctionHeader
396 bool LLParser::ParseDeclare() {
397 assert(Lex.getKind() == lltok::kw_declare);
401 return ParseFunctionHeader(F, false);
405 /// ::= 'define' FunctionHeader '{' ...
406 bool LLParser::ParseDefine() {
407 assert(Lex.getKind() == lltok::kw_define);
411 return ParseFunctionHeader(F, true) ||
412 ParseFunctionBody(*F);
418 bool LLParser::ParseGlobalType(bool &IsConstant) {
419 if (Lex.getKind() == lltok::kw_constant)
421 else if (Lex.getKind() == lltok::kw_global)
425 return TokError("expected 'global' or 'constant'");
431 /// ParseUnnamedGlobal:
432 /// OptionalVisibility ALIAS ...
433 /// OptionalLinkage OptionalVisibility ... -> global variable
434 /// GlobalID '=' OptionalVisibility ALIAS ...
435 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
436 bool LLParser::ParseUnnamedGlobal() {
437 unsigned VarID = NumberedVals.size();
439 LocTy NameLoc = Lex.getLoc();
441 // Handle the GlobalID form.
442 if (Lex.getKind() == lltok::GlobalID) {
443 if (Lex.getUIntVal() != VarID)
444 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
445 utostr(VarID) + "'");
446 Lex.Lex(); // eat GlobalID;
448 if (ParseToken(lltok::equal, "expected '=' after name"))
453 unsigned Linkage, Visibility;
454 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
455 ParseOptionalVisibility(Visibility))
458 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
459 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
460 return ParseAlias(Name, NameLoc, Visibility);
463 /// ParseNamedGlobal:
464 /// GlobalVar '=' OptionalVisibility ALIAS ...
465 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
466 bool LLParser::ParseNamedGlobal() {
467 assert(Lex.getKind() == lltok::GlobalVar);
468 LocTy NameLoc = Lex.getLoc();
469 std::string Name = Lex.getStrVal();
473 unsigned Linkage, Visibility;
474 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
475 ParseOptionalLinkage(Linkage, HasLinkage) ||
476 ParseOptionalVisibility(Visibility))
479 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
480 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
481 return ParseAlias(Name, NameLoc, Visibility);
485 // ::= '!' STRINGCONSTANT
486 bool LLParser::ParseMDString(MDString *&Result) {
488 if (ParseStringConstant(Str)) return true;
489 Result = MDString::get(Context, Str);
494 // ::= '!' MDNodeNumber
496 /// This version of ParseMDNodeID returns the slot number and null in the case
497 /// of a forward reference.
498 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
499 // !{ ..., !42, ... }
500 if (ParseUInt32(SlotNo)) return true;
502 // Check existing MDNode.
503 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != 0)
504 Result = NumberedMetadata[SlotNo];
510 bool LLParser::ParseMDNodeID(MDNode *&Result) {
511 // !{ ..., !42, ... }
513 if (ParseMDNodeID(Result, MID)) return true;
515 // If not a forward reference, just return it now.
516 if (Result) return false;
518 // Otherwise, create MDNode forward reference.
520 // FIXME: This is not unique enough!
521 std::string FwdRefName = "llvm.mdnode.fwdref." + utostr(MID);
522 Value *V = MDString::get(Context, FwdRefName);
523 MDNode *FwdNode = MDNode::get(Context, &V, 1);
524 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
526 if (NumberedMetadata.size() <= MID)
527 NumberedMetadata.resize(MID+1);
528 NumberedMetadata[MID] = FwdNode;
533 /// ParseNamedMetadata:
534 /// !foo = !{ !1, !2 }
535 bool LLParser::ParseNamedMetadata() {
536 assert(Lex.getKind() == lltok::MetadataVar);
537 std::string Name = Lex.getStrVal();
540 if (ParseToken(lltok::equal, "expected '=' here") ||
541 ParseToken(lltok::exclaim, "Expected '!' here") ||
542 ParseToken(lltok::lbrace, "Expected '{' here"))
545 SmallVector<MDNode *, 8> Elts;
547 // Null is a special case since it is typeless.
548 if (EatIfPresent(lltok::kw_null)) {
553 if (ParseToken(lltok::exclaim, "Expected '!' here"))
557 if (ParseMDNodeID(N)) return true;
559 } while (EatIfPresent(lltok::comma));
561 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
564 NamedMDNode::Create(Context, Name, Elts.data(), Elts.size(), M);
568 /// ParseStandaloneMetadata:
570 bool LLParser::ParseStandaloneMetadata() {
571 assert(Lex.getKind() == lltok::exclaim);
573 unsigned MetadataID = 0;
576 PATypeHolder Ty(Type::getVoidTy(Context));
577 SmallVector<Value *, 16> Elts;
578 if (ParseUInt32(MetadataID) ||
579 ParseToken(lltok::equal, "expected '=' here") ||
580 ParseType(Ty, TyLoc) ||
581 ParseToken(lltok::exclaim, "Expected '!' here") ||
582 ParseToken(lltok::lbrace, "Expected '{' here") ||
583 ParseMDNodeVector(Elts, NULL) ||
584 ParseToken(lltok::rbrace, "expected end of metadata node"))
587 MDNode *Init = MDNode::get(Context, Elts.data(), Elts.size());
589 // See if this was forward referenced, if so, handle it.
590 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
591 FI = ForwardRefMDNodes.find(MetadataID);
592 if (FI != ForwardRefMDNodes.end()) {
593 FI->second.first->replaceAllUsesWith(Init);
594 ForwardRefMDNodes.erase(FI);
596 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
598 if (MetadataID >= NumberedMetadata.size())
599 NumberedMetadata.resize(MetadataID+1);
601 if (NumberedMetadata[MetadataID] != 0)
602 return TokError("Metadata id is already used");
603 NumberedMetadata[MetadataID] = Init;
610 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
613 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
614 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
616 /// Everything through visibility has already been parsed.
618 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
619 unsigned Visibility) {
620 assert(Lex.getKind() == lltok::kw_alias);
623 LocTy LinkageLoc = Lex.getLoc();
624 if (ParseOptionalLinkage(Linkage))
627 if (Linkage != GlobalValue::ExternalLinkage &&
628 Linkage != GlobalValue::WeakAnyLinkage &&
629 Linkage != GlobalValue::WeakODRLinkage &&
630 Linkage != GlobalValue::InternalLinkage &&
631 Linkage != GlobalValue::PrivateLinkage &&
632 Linkage != GlobalValue::LinkerPrivateLinkage)
633 return Error(LinkageLoc, "invalid linkage type for alias");
636 LocTy AliaseeLoc = Lex.getLoc();
637 if (Lex.getKind() != lltok::kw_bitcast &&
638 Lex.getKind() != lltok::kw_getelementptr) {
639 if (ParseGlobalTypeAndValue(Aliasee)) return true;
641 // The bitcast dest type is not present, it is implied by the dest type.
643 if (ParseValID(ID)) return true;
644 if (ID.Kind != ValID::t_Constant)
645 return Error(AliaseeLoc, "invalid aliasee");
646 Aliasee = ID.ConstantVal;
649 if (!Aliasee->getType()->isPointerTy())
650 return Error(AliaseeLoc, "alias must have pointer type");
652 // Okay, create the alias but do not insert it into the module yet.
653 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
654 (GlobalValue::LinkageTypes)Linkage, Name,
656 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
658 // See if this value already exists in the symbol table. If so, it is either
659 // a redefinition or a definition of a forward reference.
660 if (GlobalValue *Val = M->getNamedValue(Name)) {
661 // See if this was a redefinition. If so, there is no entry in
663 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
664 I = ForwardRefVals.find(Name);
665 if (I == ForwardRefVals.end())
666 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
668 // Otherwise, this was a definition of forward ref. Verify that types
670 if (Val->getType() != GA->getType())
671 return Error(NameLoc,
672 "forward reference and definition of alias have different types");
674 // If they agree, just RAUW the old value with the alias and remove the
676 Val->replaceAllUsesWith(GA);
677 Val->eraseFromParent();
678 ForwardRefVals.erase(I);
681 // Insert into the module, we know its name won't collide now.
682 M->getAliasList().push_back(GA);
683 assert(GA->getNameStr() == Name && "Should not be a name conflict!");
689 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
690 /// OptionalAddrSpace GlobalType Type Const
691 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
692 /// OptionalAddrSpace GlobalType Type Const
694 /// Everything through visibility has been parsed already.
696 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
697 unsigned Linkage, bool HasLinkage,
698 unsigned Visibility) {
700 bool ThreadLocal, IsConstant;
703 PATypeHolder Ty(Type::getVoidTy(Context));
704 if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
705 ParseOptionalAddrSpace(AddrSpace) ||
706 ParseGlobalType(IsConstant) ||
707 ParseType(Ty, TyLoc))
710 // If the linkage is specified and is external, then no initializer is
713 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
714 Linkage != GlobalValue::ExternalWeakLinkage &&
715 Linkage != GlobalValue::ExternalLinkage)) {
716 if (ParseGlobalValue(Ty, Init))
720 if (Ty->isFunctionTy() || Ty->isLabelTy())
721 return Error(TyLoc, "invalid type for global variable");
723 GlobalVariable *GV = 0;
725 // See if the global was forward referenced, if so, use the global.
727 if (GlobalValue *GVal = M->getNamedValue(Name)) {
728 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
729 return Error(NameLoc, "redefinition of global '@" + Name + "'");
730 GV = cast<GlobalVariable>(GVal);
733 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
734 I = ForwardRefValIDs.find(NumberedVals.size());
735 if (I != ForwardRefValIDs.end()) {
736 GV = cast<GlobalVariable>(I->second.first);
737 ForwardRefValIDs.erase(I);
742 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
743 Name, 0, false, AddrSpace);
745 if (GV->getType()->getElementType() != Ty)
747 "forward reference and definition of global have different types");
749 // Move the forward-reference to the correct spot in the module.
750 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
754 NumberedVals.push_back(GV);
756 // Set the parsed properties on the global.
758 GV->setInitializer(Init);
759 GV->setConstant(IsConstant);
760 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
761 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
762 GV->setThreadLocal(ThreadLocal);
764 // Parse attributes on the global.
765 while (Lex.getKind() == lltok::comma) {
768 if (Lex.getKind() == lltok::kw_section) {
770 GV->setSection(Lex.getStrVal());
771 if (ParseToken(lltok::StringConstant, "expected global section string"))
773 } else if (Lex.getKind() == lltok::kw_align) {
775 if (ParseOptionalAlignment(Alignment)) return true;
776 GV->setAlignment(Alignment);
778 TokError("unknown global variable property!");
786 //===----------------------------------------------------------------------===//
787 // GlobalValue Reference/Resolution Routines.
788 //===----------------------------------------------------------------------===//
790 /// GetGlobalVal - Get a value with the specified name or ID, creating a
791 /// forward reference record if needed. This can return null if the value
792 /// exists but does not have the right type.
793 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, const Type *Ty,
795 const PointerType *PTy = dyn_cast<PointerType>(Ty);
797 Error(Loc, "global variable reference must have pointer type");
801 // Look this name up in the normal function symbol table.
803 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
805 // If this is a forward reference for the value, see if we already created a
806 // forward ref record.
808 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
809 I = ForwardRefVals.find(Name);
810 if (I != ForwardRefVals.end())
811 Val = I->second.first;
814 // If we have the value in the symbol table or fwd-ref table, return it.
816 if (Val->getType() == Ty) return Val;
817 Error(Loc, "'@" + Name + "' defined with type '" +
818 Val->getType()->getDescription() + "'");
822 // Otherwise, create a new forward reference for this value and remember it.
824 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
825 // Function types can return opaque but functions can't.
826 if (FT->getReturnType()->isOpaqueTy()) {
827 Error(Loc, "function may not return opaque type");
831 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
833 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
834 GlobalValue::ExternalWeakLinkage, 0, Name);
837 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
841 GlobalValue *LLParser::GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc) {
842 const PointerType *PTy = dyn_cast<PointerType>(Ty);
844 Error(Loc, "global variable reference must have pointer type");
848 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
850 // If this is a forward reference for the value, see if we already created a
851 // forward ref record.
853 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
854 I = ForwardRefValIDs.find(ID);
855 if (I != ForwardRefValIDs.end())
856 Val = I->second.first;
859 // If we have the value in the symbol table or fwd-ref table, return it.
861 if (Val->getType() == Ty) return Val;
862 Error(Loc, "'@" + utostr(ID) + "' defined with type '" +
863 Val->getType()->getDescription() + "'");
867 // Otherwise, create a new forward reference for this value and remember it.
869 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
870 // Function types can return opaque but functions can't.
871 if (FT->getReturnType()->isOpaqueTy()) {
872 Error(Loc, "function may not return opaque type");
875 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
877 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
878 GlobalValue::ExternalWeakLinkage, 0, "");
881 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
886 //===----------------------------------------------------------------------===//
888 //===----------------------------------------------------------------------===//
890 /// ParseToken - If the current token has the specified kind, eat it and return
891 /// success. Otherwise, emit the specified error and return failure.
892 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
893 if (Lex.getKind() != T)
894 return TokError(ErrMsg);
899 /// ParseStringConstant
900 /// ::= StringConstant
901 bool LLParser::ParseStringConstant(std::string &Result) {
902 if (Lex.getKind() != lltok::StringConstant)
903 return TokError("expected string constant");
904 Result = Lex.getStrVal();
911 bool LLParser::ParseUInt32(unsigned &Val) {
912 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
913 return TokError("expected integer");
914 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
915 if (Val64 != unsigned(Val64))
916 return TokError("expected 32-bit integer (too large)");
923 /// ParseOptionalAddrSpace
925 /// := 'addrspace' '(' uint32 ')'
926 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
928 if (!EatIfPresent(lltok::kw_addrspace))
930 return ParseToken(lltok::lparen, "expected '(' in address space") ||
931 ParseUInt32(AddrSpace) ||
932 ParseToken(lltok::rparen, "expected ')' in address space");
935 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
936 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
937 /// 2: function attr.
938 /// 3: function arg after value: FIXME: REMOVE IN LLVM 3.0
939 bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
940 Attrs = Attribute::None;
941 LocTy AttrLoc = Lex.getLoc();
944 switch (Lex.getKind()) {
947 // Treat these as signext/zeroext if they occur in the argument list after
948 // the value, as in "call i8 @foo(i8 10 sext)". If they occur before the
949 // value, as in "call i8 @foo(i8 sext (" then it is part of a constant
951 // FIXME: REMOVE THIS IN LLVM 3.0
953 if (Lex.getKind() == lltok::kw_sext)
954 Attrs |= Attribute::SExt;
956 Attrs |= Attribute::ZExt;
960 default: // End of attributes.
961 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
962 return Error(AttrLoc, "invalid use of function-only attribute");
964 if (AttrKind != 0 && AttrKind != 3 && (Attrs & Attribute::ParameterOnly))
965 return Error(AttrLoc, "invalid use of parameter-only attribute");
968 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
969 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
970 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
971 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
972 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
973 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
974 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
975 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
977 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
978 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
979 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
980 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
981 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
982 case lltok::kw_inlinehint: Attrs |= Attribute::InlineHint; break;
983 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
984 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
985 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
986 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
987 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
988 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
989 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
991 case lltok::kw_alignstack: {
993 if (ParseOptionalStackAlignment(Alignment))
995 Attrs |= Attribute::constructStackAlignmentFromInt(Alignment);
999 case lltok::kw_align: {
1001 if (ParseOptionalAlignment(Alignment))
1003 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
1012 /// ParseOptionalLinkage
1015 /// ::= 'linker_private'
1020 /// ::= 'linkonce_odr'
1025 /// ::= 'extern_weak'
1027 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1029 switch (Lex.getKind()) {
1030 default: Res=GlobalValue::ExternalLinkage; return false;
1031 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1032 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1033 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1034 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1035 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1036 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1037 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1038 case lltok::kw_available_externally:
1039 Res = GlobalValue::AvailableExternallyLinkage;
1041 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1042 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1043 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1044 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1045 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1046 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1053 /// ParseOptionalVisibility
1059 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1060 switch (Lex.getKind()) {
1061 default: Res = GlobalValue::DefaultVisibility; return false;
1062 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1063 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1064 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1070 /// ParseOptionalCallingConv
1075 /// ::= 'x86_stdcallcc'
1076 /// ::= 'x86_fastcallcc'
1077 /// ::= 'arm_apcscc'
1078 /// ::= 'arm_aapcscc'
1079 /// ::= 'arm_aapcs_vfpcc'
1080 /// ::= 'msp430_intrcc'
1083 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1084 switch (Lex.getKind()) {
1085 default: CC = CallingConv::C; return false;
1086 case lltok::kw_ccc: CC = CallingConv::C; break;
1087 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1088 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1089 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1090 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1091 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1092 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1093 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1094 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1095 case lltok::kw_cc: {
1096 unsigned ArbitraryCC;
1098 if (ParseUInt32(ArbitraryCC)) {
1101 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1111 /// ParseInstructionMetadata
1112 /// ::= !dbg !42 (',' !dbg !57)*
1113 bool LLParser::ParseInstructionMetadata(Instruction *Inst) {
1115 if (Lex.getKind() != lltok::MetadataVar)
1116 return TokError("expected metadata after comma");
1118 std::string Name = Lex.getStrVal();
1123 SMLoc Loc = Lex.getLoc();
1124 if (ParseToken(lltok::exclaim, "expected '!' here") ||
1125 ParseMDNodeID(Node, NodeID))
1128 unsigned MDK = M->getMDKindID(Name.c_str());
1130 // If we got the node, add it to the instruction.
1131 Inst->setMetadata(MDK, Node);
1133 MDRef R = { Loc, MDK, NodeID };
1134 // Otherwise, remember that this should be resolved later.
1135 ForwardRefInstMetadata[Inst].push_back(R);
1138 // If this is the end of the list, we're done.
1139 } while (EatIfPresent(lltok::comma));
1143 /// ParseOptionalAlignment
1146 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1148 if (!EatIfPresent(lltok::kw_align))
1150 LocTy AlignLoc = Lex.getLoc();
1151 if (ParseUInt32(Alignment)) return true;
1152 if (!isPowerOf2_32(Alignment))
1153 return Error(AlignLoc, "alignment is not a power of two");
1157 /// ParseOptionalCommaAlign
1161 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1163 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1164 bool &AteExtraComma) {
1165 AteExtraComma = false;
1166 while (EatIfPresent(lltok::comma)) {
1167 // Metadata at the end is an early exit.
1168 if (Lex.getKind() == lltok::MetadataVar) {
1169 AteExtraComma = true;
1173 if (Lex.getKind() == lltok::kw_align) {
1174 if (ParseOptionalAlignment(Alignment)) return true;
1182 /// ParseOptionalStackAlignment
1184 /// ::= 'alignstack' '(' 4 ')'
1185 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1187 if (!EatIfPresent(lltok::kw_alignstack))
1189 LocTy ParenLoc = Lex.getLoc();
1190 if (!EatIfPresent(lltok::lparen))
1191 return Error(ParenLoc, "expected '('");
1192 LocTy AlignLoc = Lex.getLoc();
1193 if (ParseUInt32(Alignment)) return true;
1194 ParenLoc = Lex.getLoc();
1195 if (!EatIfPresent(lltok::rparen))
1196 return Error(ParenLoc, "expected ')'");
1197 if (!isPowerOf2_32(Alignment))
1198 return Error(AlignLoc, "stack alignment is not a power of two");
1202 /// ParseIndexList - This parses the index list for an insert/extractvalue
1203 /// instruction. This sets AteExtraComma in the case where we eat an extra
1204 /// comma at the end of the line and find that it is followed by metadata.
1205 /// Clients that don't allow metadata can call the version of this function that
1206 /// only takes one argument.
1209 /// ::= (',' uint32)+
1211 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1212 bool &AteExtraComma) {
1213 AteExtraComma = false;
1215 if (Lex.getKind() != lltok::comma)
1216 return TokError("expected ',' as start of index list");
1218 while (EatIfPresent(lltok::comma)) {
1219 if (Lex.getKind() == lltok::MetadataVar) {
1220 AteExtraComma = true;
1224 if (ParseUInt32(Idx)) return true;
1225 Indices.push_back(Idx);
1231 //===----------------------------------------------------------------------===//
1233 //===----------------------------------------------------------------------===//
1235 /// ParseType - Parse and resolve a full type.
1236 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1237 LocTy TypeLoc = Lex.getLoc();
1238 if (ParseTypeRec(Result)) return true;
1240 // Verify no unresolved uprefs.
1241 if (!UpRefs.empty())
1242 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1244 if (!AllowVoid && Result.get()->isVoidTy())
1245 return Error(TypeLoc, "void type only allowed for function results");
1250 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1251 /// called. It loops through the UpRefs vector, which is a list of the
1252 /// currently active types. For each type, if the up-reference is contained in
1253 /// the newly completed type, we decrement the level count. When the level
1254 /// count reaches zero, the up-referenced type is the type that is passed in:
1255 /// thus we can complete the cycle.
1257 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1258 // If Ty isn't abstract, or if there are no up-references in it, then there is
1259 // nothing to resolve here.
1260 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1262 PATypeHolder Ty(ty);
1264 dbgs() << "Type '" << Ty->getDescription()
1265 << "' newly formed. Resolving upreferences.\n"
1266 << UpRefs.size() << " upreferences active!\n";
1269 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1270 // to zero), we resolve them all together before we resolve them to Ty. At
1271 // the end of the loop, if there is anything to resolve to Ty, it will be in
1273 OpaqueType *TypeToResolve = 0;
1275 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1276 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1278 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1279 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1282 dbgs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1283 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1284 << (ContainsType ? "true" : "false")
1285 << " level=" << UpRefs[i].NestingLevel << "\n";
1290 // Decrement level of upreference
1291 unsigned Level = --UpRefs[i].NestingLevel;
1292 UpRefs[i].LastContainedTy = Ty;
1294 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1299 dbgs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1302 TypeToResolve = UpRefs[i].UpRefTy;
1304 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1305 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1306 --i; // Do not skip the next element.
1310 TypeToResolve->refineAbstractTypeTo(Ty);
1316 /// ParseTypeRec - The recursive function used to process the internal
1317 /// implementation details of types.
1318 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1319 switch (Lex.getKind()) {
1321 return TokError("expected type");
1323 // TypeRec ::= 'float' | 'void' (etc)
1324 Result = Lex.getTyVal();
1327 case lltok::kw_opaque:
1328 // TypeRec ::= 'opaque'
1329 Result = OpaqueType::get(Context);
1333 // TypeRec ::= '{' ... '}'
1334 if (ParseStructType(Result, false))
1337 case lltok::kw_union:
1338 // TypeRec ::= 'union' '{' ... '}'
1339 if (ParseUnionType(Result))
1342 case lltok::lsquare:
1343 // TypeRec ::= '[' ... ']'
1344 Lex.Lex(); // eat the lsquare.
1345 if (ParseArrayVectorType(Result, false))
1348 case lltok::less: // Either vector or packed struct.
1349 // TypeRec ::= '<' ... '>'
1351 if (Lex.getKind() == lltok::lbrace) {
1352 if (ParseStructType(Result, true) ||
1353 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1355 } else if (ParseArrayVectorType(Result, true))
1358 case lltok::LocalVar:
1359 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1361 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1364 Result = OpaqueType::get(Context);
1365 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1366 std::make_pair(Result,
1368 M->addTypeName(Lex.getStrVal(), Result.get());
1373 case lltok::LocalVarID:
1375 if (Lex.getUIntVal() < NumberedTypes.size())
1376 Result = NumberedTypes[Lex.getUIntVal()];
1378 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1379 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1380 if (I != ForwardRefTypeIDs.end())
1381 Result = I->second.first;
1383 Result = OpaqueType::get(Context);
1384 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1385 std::make_pair(Result,
1391 case lltok::backslash: {
1392 // TypeRec ::= '\' 4
1395 if (ParseUInt32(Val)) return true;
1396 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1397 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1403 // Parse the type suffixes.
1405 switch (Lex.getKind()) {
1407 default: return false;
1409 // TypeRec ::= TypeRec '*'
1411 if (Result.get()->isLabelTy())
1412 return TokError("basic block pointers are invalid");
1413 if (Result.get()->isVoidTy())
1414 return TokError("pointers to void are invalid; use i8* instead");
1415 if (!PointerType::isValidElementType(Result.get()))
1416 return TokError("pointer to this type is invalid");
1417 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1421 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1422 case lltok::kw_addrspace: {
1423 if (Result.get()->isLabelTy())
1424 return TokError("basic block pointers are invalid");
1425 if (Result.get()->isVoidTy())
1426 return TokError("pointers to void are invalid; use i8* instead");
1427 if (!PointerType::isValidElementType(Result.get()))
1428 return TokError("pointer to this type is invalid");
1430 if (ParseOptionalAddrSpace(AddrSpace) ||
1431 ParseToken(lltok::star, "expected '*' in address space"))
1434 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1438 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1440 if (ParseFunctionType(Result))
1447 /// ParseParameterList
1449 /// ::= '(' Arg (',' Arg)* ')'
1451 /// ::= Type OptionalAttributes Value OptionalAttributes
1452 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1453 PerFunctionState &PFS) {
1454 if (ParseToken(lltok::lparen, "expected '(' in call"))
1457 while (Lex.getKind() != lltok::rparen) {
1458 // If this isn't the first argument, we need a comma.
1459 if (!ArgList.empty() &&
1460 ParseToken(lltok::comma, "expected ',' in argument list"))
1463 // Parse the argument.
1465 PATypeHolder ArgTy(Type::getVoidTy(Context));
1466 unsigned ArgAttrs1 = Attribute::None;
1467 unsigned ArgAttrs2 = Attribute::None;
1469 if (ParseType(ArgTy, ArgLoc))
1472 // Otherwise, handle normal operands.
1473 if (ParseOptionalAttrs(ArgAttrs1, 0) ||
1474 ParseValue(ArgTy, V, PFS) ||
1475 // FIXME: Should not allow attributes after the argument, remove this
1477 ParseOptionalAttrs(ArgAttrs2, 3))
1479 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1482 Lex.Lex(); // Lex the ')'.
1488 /// ParseArgumentList - Parse the argument list for a function type or function
1489 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1490 /// ::= '(' ArgTypeListI ')'
1494 /// ::= ArgTypeList ',' '...'
1495 /// ::= ArgType (',' ArgType)*
1497 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1498 bool &isVarArg, bool inType) {
1500 assert(Lex.getKind() == lltok::lparen);
1501 Lex.Lex(); // eat the (.
1503 if (Lex.getKind() == lltok::rparen) {
1505 } else if (Lex.getKind() == lltok::dotdotdot) {
1509 LocTy TypeLoc = Lex.getLoc();
1510 PATypeHolder ArgTy(Type::getVoidTy(Context));
1514 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1515 // types (such as a function returning a pointer to itself). If parsing a
1516 // function prototype, we require fully resolved types.
1517 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1518 ParseOptionalAttrs(Attrs, 0)) return true;
1520 if (ArgTy->isVoidTy())
1521 return Error(TypeLoc, "argument can not have void type");
1523 if (Lex.getKind() == lltok::LocalVar ||
1524 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1525 Name = Lex.getStrVal();
1529 if (!FunctionType::isValidArgumentType(ArgTy))
1530 return Error(TypeLoc, "invalid type for function argument");
1532 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1534 while (EatIfPresent(lltok::comma)) {
1535 // Handle ... at end of arg list.
1536 if (EatIfPresent(lltok::dotdotdot)) {
1541 // Otherwise must be an argument type.
1542 TypeLoc = Lex.getLoc();
1543 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1544 ParseOptionalAttrs(Attrs, 0)) return true;
1546 if (ArgTy->isVoidTy())
1547 return Error(TypeLoc, "argument can not have void type");
1549 if (Lex.getKind() == lltok::LocalVar ||
1550 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1551 Name = Lex.getStrVal();
1557 if (!ArgTy->isFirstClassType() && !ArgTy->isOpaqueTy())
1558 return Error(TypeLoc, "invalid type for function argument");
1560 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1564 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1567 /// ParseFunctionType
1568 /// ::= Type ArgumentList OptionalAttrs
1569 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1570 assert(Lex.getKind() == lltok::lparen);
1572 if (!FunctionType::isValidReturnType(Result))
1573 return TokError("invalid function return type");
1575 std::vector<ArgInfo> ArgList;
1578 if (ParseArgumentList(ArgList, isVarArg, true) ||
1579 // FIXME: Allow, but ignore attributes on function types!
1580 // FIXME: Remove in LLVM 3.0
1581 ParseOptionalAttrs(Attrs, 2))
1584 // Reject names on the arguments lists.
1585 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1586 if (!ArgList[i].Name.empty())
1587 return Error(ArgList[i].Loc, "argument name invalid in function type");
1588 if (!ArgList[i].Attrs != 0) {
1589 // Allow but ignore attributes on function types; this permits
1591 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1595 std::vector<const Type*> ArgListTy;
1596 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1597 ArgListTy.push_back(ArgList[i].Type);
1599 Result = HandleUpRefs(FunctionType::get(Result.get(),
1600 ArgListTy, isVarArg));
1604 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1607 /// ::= '{' TypeRec (',' TypeRec)* '}'
1608 /// ::= '<' '{' '}' '>'
1609 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1610 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1611 assert(Lex.getKind() == lltok::lbrace);
1612 Lex.Lex(); // Consume the '{'
1614 if (EatIfPresent(lltok::rbrace)) {
1615 Result = StructType::get(Context, Packed);
1619 std::vector<PATypeHolder> ParamsList;
1620 LocTy EltTyLoc = Lex.getLoc();
1621 if (ParseTypeRec(Result)) return true;
1622 ParamsList.push_back(Result);
1624 if (Result->isVoidTy())
1625 return Error(EltTyLoc, "struct element can not have void type");
1626 if (!StructType::isValidElementType(Result))
1627 return Error(EltTyLoc, "invalid element type for struct");
1629 while (EatIfPresent(lltok::comma)) {
1630 EltTyLoc = Lex.getLoc();
1631 if (ParseTypeRec(Result)) return true;
1633 if (Result->isVoidTy())
1634 return Error(EltTyLoc, "struct element can not have void type");
1635 if (!StructType::isValidElementType(Result))
1636 return Error(EltTyLoc, "invalid element type for struct");
1638 ParamsList.push_back(Result);
1641 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1644 std::vector<const Type*> ParamsListTy;
1645 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1646 ParamsListTy.push_back(ParamsList[i].get());
1647 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1653 /// ::= 'union' '{' TypeRec (',' TypeRec)* '}'
1654 bool LLParser::ParseUnionType(PATypeHolder &Result) {
1655 assert(Lex.getKind() == lltok::kw_union);
1656 Lex.Lex(); // Consume the 'union'
1658 if (ParseToken(lltok::lbrace, "'{' expected after 'union'")) return true;
1660 SmallVector<PATypeHolder, 8> ParamsList;
1662 LocTy EltTyLoc = Lex.getLoc();
1663 if (ParseTypeRec(Result)) return true;
1664 ParamsList.push_back(Result);
1666 if (Result->isVoidTy())
1667 return Error(EltTyLoc, "union element can not have void type");
1668 if (!UnionType::isValidElementType(Result))
1669 return Error(EltTyLoc, "invalid element type for union");
1671 } while (EatIfPresent(lltok::comma)) ;
1673 if (ParseToken(lltok::rbrace, "expected '}' at end of union"))
1676 SmallVector<const Type*, 8> ParamsListTy;
1677 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1678 ParamsListTy.push_back(ParamsList[i].get());
1679 Result = HandleUpRefs(UnionType::get(&ParamsListTy[0], ParamsListTy.size()));
1683 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1684 /// token has already been consumed.
1686 /// ::= '[' APSINTVAL 'x' Types ']'
1687 /// ::= '<' APSINTVAL 'x' Types '>'
1688 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1689 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1690 Lex.getAPSIntVal().getBitWidth() > 64)
1691 return TokError("expected number in address space");
1693 LocTy SizeLoc = Lex.getLoc();
1694 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1697 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1700 LocTy TypeLoc = Lex.getLoc();
1701 PATypeHolder EltTy(Type::getVoidTy(Context));
1702 if (ParseTypeRec(EltTy)) return true;
1704 if (EltTy->isVoidTy())
1705 return Error(TypeLoc, "array and vector element type cannot be void");
1707 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1708 "expected end of sequential type"))
1713 return Error(SizeLoc, "zero element vector is illegal");
1714 if ((unsigned)Size != Size)
1715 return Error(SizeLoc, "size too large for vector");
1716 if (!VectorType::isValidElementType(EltTy))
1717 return Error(TypeLoc, "vector element type must be fp or integer");
1718 Result = VectorType::get(EltTy, unsigned(Size));
1720 if (!ArrayType::isValidElementType(EltTy))
1721 return Error(TypeLoc, "invalid array element type");
1722 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1727 //===----------------------------------------------------------------------===//
1728 // Function Semantic Analysis.
1729 //===----------------------------------------------------------------------===//
1731 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1733 : P(p), F(f), FunctionNumber(functionNumber) {
1735 // Insert unnamed arguments into the NumberedVals list.
1736 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1739 NumberedVals.push_back(AI);
1742 LLParser::PerFunctionState::~PerFunctionState() {
1743 // If there were any forward referenced non-basicblock values, delete them.
1744 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1745 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1746 if (!isa<BasicBlock>(I->second.first)) {
1747 I->second.first->replaceAllUsesWith(
1748 UndefValue::get(I->second.first->getType()));
1749 delete I->second.first;
1750 I->second.first = 0;
1753 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1754 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1755 if (!isa<BasicBlock>(I->second.first)) {
1756 I->second.first->replaceAllUsesWith(
1757 UndefValue::get(I->second.first->getType()));
1758 delete I->second.first;
1759 I->second.first = 0;
1763 bool LLParser::PerFunctionState::FinishFunction() {
1764 // Check to see if someone took the address of labels in this block.
1765 if (!P.ForwardRefBlockAddresses.empty()) {
1767 if (!F.getName().empty()) {
1768 FunctionID.Kind = ValID::t_GlobalName;
1769 FunctionID.StrVal = F.getName();
1771 FunctionID.Kind = ValID::t_GlobalID;
1772 FunctionID.UIntVal = FunctionNumber;
1775 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1776 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1777 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1778 // Resolve all these references.
1779 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1782 P.ForwardRefBlockAddresses.erase(FRBAI);
1786 if (!ForwardRefVals.empty())
1787 return P.Error(ForwardRefVals.begin()->second.second,
1788 "use of undefined value '%" + ForwardRefVals.begin()->first +
1790 if (!ForwardRefValIDs.empty())
1791 return P.Error(ForwardRefValIDs.begin()->second.second,
1792 "use of undefined value '%" +
1793 utostr(ForwardRefValIDs.begin()->first) + "'");
1798 /// GetVal - Get a value with the specified name or ID, creating a
1799 /// forward reference record if needed. This can return null if the value
1800 /// exists but does not have the right type.
1801 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1802 const Type *Ty, LocTy Loc) {
1803 // Look this name up in the normal function symbol table.
1804 Value *Val = F.getValueSymbolTable().lookup(Name);
1806 // If this is a forward reference for the value, see if we already created a
1807 // forward ref record.
1809 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1810 I = ForwardRefVals.find(Name);
1811 if (I != ForwardRefVals.end())
1812 Val = I->second.first;
1815 // If we have the value in the symbol table or fwd-ref table, return it.
1817 if (Val->getType() == Ty) return Val;
1818 if (Ty->isLabelTy())
1819 P.Error(Loc, "'%" + Name + "' is not a basic block");
1821 P.Error(Loc, "'%" + Name + "' defined with type '" +
1822 Val->getType()->getDescription() + "'");
1826 // Don't make placeholders with invalid type.
1827 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1828 P.Error(Loc, "invalid use of a non-first-class type");
1832 // Otherwise, create a new forward reference for this value and remember it.
1834 if (Ty->isLabelTy())
1835 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1837 FwdVal = new Argument(Ty, Name);
1839 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1843 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1845 // Look this name up in the normal function symbol table.
1846 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1848 // If this is a forward reference for the value, see if we already created a
1849 // forward ref record.
1851 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1852 I = ForwardRefValIDs.find(ID);
1853 if (I != ForwardRefValIDs.end())
1854 Val = I->second.first;
1857 // If we have the value in the symbol table or fwd-ref table, return it.
1859 if (Val->getType() == Ty) return Val;
1860 if (Ty->isLabelTy())
1861 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1863 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1864 Val->getType()->getDescription() + "'");
1868 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1869 P.Error(Loc, "invalid use of a non-first-class type");
1873 // Otherwise, create a new forward reference for this value and remember it.
1875 if (Ty->isLabelTy())
1876 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1878 FwdVal = new Argument(Ty);
1880 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1884 /// SetInstName - After an instruction is parsed and inserted into its
1885 /// basic block, this installs its name.
1886 bool LLParser::PerFunctionState::SetInstName(int NameID,
1887 const std::string &NameStr,
1888 LocTy NameLoc, Instruction *Inst) {
1889 // If this instruction has void type, it cannot have a name or ID specified.
1890 if (Inst->getType()->isVoidTy()) {
1891 if (NameID != -1 || !NameStr.empty())
1892 return P.Error(NameLoc, "instructions returning void cannot have a name");
1896 // If this was a numbered instruction, verify that the instruction is the
1897 // expected value and resolve any forward references.
1898 if (NameStr.empty()) {
1899 // If neither a name nor an ID was specified, just use the next ID.
1901 NameID = NumberedVals.size();
1903 if (unsigned(NameID) != NumberedVals.size())
1904 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1905 utostr(NumberedVals.size()) + "'");
1907 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1908 ForwardRefValIDs.find(NameID);
1909 if (FI != ForwardRefValIDs.end()) {
1910 if (FI->second.first->getType() != Inst->getType())
1911 return P.Error(NameLoc, "instruction forward referenced with type '" +
1912 FI->second.first->getType()->getDescription() + "'");
1913 FI->second.first->replaceAllUsesWith(Inst);
1914 delete FI->second.first;
1915 ForwardRefValIDs.erase(FI);
1918 NumberedVals.push_back(Inst);
1922 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1923 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1924 FI = ForwardRefVals.find(NameStr);
1925 if (FI != ForwardRefVals.end()) {
1926 if (FI->second.first->getType() != Inst->getType())
1927 return P.Error(NameLoc, "instruction forward referenced with type '" +
1928 FI->second.first->getType()->getDescription() + "'");
1929 FI->second.first->replaceAllUsesWith(Inst);
1930 delete FI->second.first;
1931 ForwardRefVals.erase(FI);
1934 // Set the name on the instruction.
1935 Inst->setName(NameStr);
1937 if (Inst->getNameStr() != NameStr)
1938 return P.Error(NameLoc, "multiple definition of local value named '" +
1943 /// GetBB - Get a basic block with the specified name or ID, creating a
1944 /// forward reference record if needed.
1945 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1947 return cast_or_null<BasicBlock>(GetVal(Name,
1948 Type::getLabelTy(F.getContext()), Loc));
1951 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1952 return cast_or_null<BasicBlock>(GetVal(ID,
1953 Type::getLabelTy(F.getContext()), Loc));
1956 /// DefineBB - Define the specified basic block, which is either named or
1957 /// unnamed. If there is an error, this returns null otherwise it returns
1958 /// the block being defined.
1959 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1963 BB = GetBB(NumberedVals.size(), Loc);
1965 BB = GetBB(Name, Loc);
1966 if (BB == 0) return 0; // Already diagnosed error.
1968 // Move the block to the end of the function. Forward ref'd blocks are
1969 // inserted wherever they happen to be referenced.
1970 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1972 // Remove the block from forward ref sets.
1974 ForwardRefValIDs.erase(NumberedVals.size());
1975 NumberedVals.push_back(BB);
1977 // BB forward references are already in the function symbol table.
1978 ForwardRefVals.erase(Name);
1984 //===----------------------------------------------------------------------===//
1986 //===----------------------------------------------------------------------===//
1988 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1989 /// type implied. For example, if we parse "4" we don't know what integer type
1990 /// it has. The value will later be combined with its type and checked for
1991 /// sanity. PFS is used to convert function-local operands of metadata (since
1992 /// metadata operands are not just parsed here but also converted to values).
1993 /// PFS can be null when we are not parsing metadata values inside a function.
1994 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
1995 ID.Loc = Lex.getLoc();
1996 switch (Lex.getKind()) {
1997 default: return TokError("expected value token");
1998 case lltok::GlobalID: // @42
1999 ID.UIntVal = Lex.getUIntVal();
2000 ID.Kind = ValID::t_GlobalID;
2002 case lltok::GlobalVar: // @foo
2003 ID.StrVal = Lex.getStrVal();
2004 ID.Kind = ValID::t_GlobalName;
2006 case lltok::LocalVarID: // %42
2007 ID.UIntVal = Lex.getUIntVal();
2008 ID.Kind = ValID::t_LocalID;
2010 case lltok::LocalVar: // %foo
2011 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
2012 ID.StrVal = Lex.getStrVal();
2013 ID.Kind = ValID::t_LocalName;
2015 case lltok::exclaim: // !{...} MDNode, !"foo" MDString
2018 if (EatIfPresent(lltok::lbrace)) {
2019 SmallVector<Value*, 16> Elts;
2020 if (ParseMDNodeVector(Elts, PFS) ||
2021 ParseToken(lltok::rbrace, "expected end of metadata node"))
2024 ID.MDNodeVal = MDNode::get(Context, Elts.data(), Elts.size());
2025 ID.Kind = ValID::t_MDNode;
2029 // Standalone metadata reference
2030 // !{ ..., !42, ... }
2031 if (Lex.getKind() == lltok::APSInt) {
2032 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2033 ID.Kind = ValID::t_MDNode;
2038 // ::= '!' STRINGCONSTANT
2039 if (ParseMDString(ID.MDStringVal)) return true;
2040 ID.Kind = ValID::t_MDString;
2043 ID.APSIntVal = Lex.getAPSIntVal();
2044 ID.Kind = ValID::t_APSInt;
2046 case lltok::APFloat:
2047 ID.APFloatVal = Lex.getAPFloatVal();
2048 ID.Kind = ValID::t_APFloat;
2050 case lltok::kw_true:
2051 ID.ConstantVal = ConstantInt::getTrue(Context);
2052 ID.Kind = ValID::t_Constant;
2054 case lltok::kw_false:
2055 ID.ConstantVal = ConstantInt::getFalse(Context);
2056 ID.Kind = ValID::t_Constant;
2058 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2059 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2060 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2062 case lltok::lbrace: {
2063 // ValID ::= '{' ConstVector '}'
2065 SmallVector<Constant*, 16> Elts;
2066 if (ParseGlobalValueVector(Elts) ||
2067 ParseToken(lltok::rbrace, "expected end of struct constant"))
2070 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
2071 Elts.size(), false);
2072 ID.Kind = ValID::t_Constant;
2076 // ValID ::= '<' ConstVector '>' --> Vector.
2077 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2079 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2081 SmallVector<Constant*, 16> Elts;
2082 LocTy FirstEltLoc = Lex.getLoc();
2083 if (ParseGlobalValueVector(Elts) ||
2085 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2086 ParseToken(lltok::greater, "expected end of constant"))
2089 if (isPackedStruct) {
2091 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
2092 ID.Kind = ValID::t_Constant;
2097 return Error(ID.Loc, "constant vector must not be empty");
2099 if (!Elts[0]->getType()->isIntegerTy() &&
2100 !Elts[0]->getType()->isFloatingPointTy())
2101 return Error(FirstEltLoc,
2102 "vector elements must have integer or floating point type");
2104 // Verify that all the vector elements have the same type.
2105 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2106 if (Elts[i]->getType() != Elts[0]->getType())
2107 return Error(FirstEltLoc,
2108 "vector element #" + utostr(i) +
2109 " is not of type '" + Elts[0]->getType()->getDescription());
2111 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
2112 ID.Kind = ValID::t_Constant;
2115 case lltok::lsquare: { // Array Constant
2117 SmallVector<Constant*, 16> Elts;
2118 LocTy FirstEltLoc = Lex.getLoc();
2119 if (ParseGlobalValueVector(Elts) ||
2120 ParseToken(lltok::rsquare, "expected end of array constant"))
2123 // Handle empty element.
2125 // Use undef instead of an array because it's inconvenient to determine
2126 // the element type at this point, there being no elements to examine.
2127 ID.Kind = ValID::t_EmptyArray;
2131 if (!Elts[0]->getType()->isFirstClassType())
2132 return Error(FirstEltLoc, "invalid array element type: " +
2133 Elts[0]->getType()->getDescription());
2135 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2137 // Verify all elements are correct type!
2138 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2139 if (Elts[i]->getType() != Elts[0]->getType())
2140 return Error(FirstEltLoc,
2141 "array element #" + utostr(i) +
2142 " is not of type '" +Elts[0]->getType()->getDescription());
2145 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
2146 ID.Kind = ValID::t_Constant;
2149 case lltok::kw_c: // c "foo"
2151 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
2152 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2153 ID.Kind = ValID::t_Constant;
2156 case lltok::kw_asm: {
2157 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2158 bool HasSideEffect, AlignStack;
2160 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2161 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2162 ParseStringConstant(ID.StrVal) ||
2163 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2164 ParseToken(lltok::StringConstant, "expected constraint string"))
2166 ID.StrVal2 = Lex.getStrVal();
2167 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2168 ID.Kind = ValID::t_InlineAsm;
2172 case lltok::kw_blockaddress: {
2173 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2177 LocTy FnLoc, LabelLoc;
2179 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2181 ParseToken(lltok::comma, "expected comma in block address expression")||
2182 ParseValID(Label) ||
2183 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2186 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2187 return Error(Fn.Loc, "expected function name in blockaddress");
2188 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2189 return Error(Label.Loc, "expected basic block name in blockaddress");
2191 // Make a global variable as a placeholder for this reference.
2192 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2193 false, GlobalValue::InternalLinkage,
2195 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2196 ID.ConstantVal = FwdRef;
2197 ID.Kind = ValID::t_Constant;
2201 case lltok::kw_trunc:
2202 case lltok::kw_zext:
2203 case lltok::kw_sext:
2204 case lltok::kw_fptrunc:
2205 case lltok::kw_fpext:
2206 case lltok::kw_bitcast:
2207 case lltok::kw_uitofp:
2208 case lltok::kw_sitofp:
2209 case lltok::kw_fptoui:
2210 case lltok::kw_fptosi:
2211 case lltok::kw_inttoptr:
2212 case lltok::kw_ptrtoint: {
2213 unsigned Opc = Lex.getUIntVal();
2214 PATypeHolder DestTy(Type::getVoidTy(Context));
2217 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2218 ParseGlobalTypeAndValue(SrcVal) ||
2219 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2220 ParseType(DestTy) ||
2221 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2223 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2224 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2225 SrcVal->getType()->getDescription() + "' to '" +
2226 DestTy->getDescription() + "'");
2227 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2229 ID.Kind = ValID::t_Constant;
2232 case lltok::kw_extractvalue: {
2235 SmallVector<unsigned, 4> Indices;
2236 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2237 ParseGlobalTypeAndValue(Val) ||
2238 ParseIndexList(Indices) ||
2239 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2242 if (!Val->getType()->isAggregateType())
2243 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2244 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
2246 return Error(ID.Loc, "invalid indices for extractvalue");
2248 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
2249 ID.Kind = ValID::t_Constant;
2252 case lltok::kw_insertvalue: {
2254 Constant *Val0, *Val1;
2255 SmallVector<unsigned, 4> Indices;
2256 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2257 ParseGlobalTypeAndValue(Val0) ||
2258 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2259 ParseGlobalTypeAndValue(Val1) ||
2260 ParseIndexList(Indices) ||
2261 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2263 if (!Val0->getType()->isAggregateType())
2264 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2265 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
2267 return Error(ID.Loc, "invalid indices for insertvalue");
2268 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
2269 Indices.data(), Indices.size());
2270 ID.Kind = ValID::t_Constant;
2273 case lltok::kw_icmp:
2274 case lltok::kw_fcmp: {
2275 unsigned PredVal, Opc = Lex.getUIntVal();
2276 Constant *Val0, *Val1;
2278 if (ParseCmpPredicate(PredVal, Opc) ||
2279 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2280 ParseGlobalTypeAndValue(Val0) ||
2281 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2282 ParseGlobalTypeAndValue(Val1) ||
2283 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2286 if (Val0->getType() != Val1->getType())
2287 return Error(ID.Loc, "compare operands must have the same type");
2289 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2291 if (Opc == Instruction::FCmp) {
2292 if (!Val0->getType()->isFPOrFPVectorTy())
2293 return Error(ID.Loc, "fcmp requires floating point operands");
2294 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2296 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2297 if (!Val0->getType()->isIntOrIntVectorTy() &&
2298 !Val0->getType()->isPointerTy())
2299 return Error(ID.Loc, "icmp requires pointer or integer operands");
2300 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2302 ID.Kind = ValID::t_Constant;
2306 // Binary Operators.
2308 case lltok::kw_fadd:
2310 case lltok::kw_fsub:
2312 case lltok::kw_fmul:
2313 case lltok::kw_udiv:
2314 case lltok::kw_sdiv:
2315 case lltok::kw_fdiv:
2316 case lltok::kw_urem:
2317 case lltok::kw_srem:
2318 case lltok::kw_frem: {
2322 unsigned Opc = Lex.getUIntVal();
2323 Constant *Val0, *Val1;
2325 LocTy ModifierLoc = Lex.getLoc();
2326 if (Opc == Instruction::Add ||
2327 Opc == Instruction::Sub ||
2328 Opc == Instruction::Mul) {
2329 if (EatIfPresent(lltok::kw_nuw))
2331 if (EatIfPresent(lltok::kw_nsw)) {
2333 if (EatIfPresent(lltok::kw_nuw))
2336 } else if (Opc == Instruction::SDiv) {
2337 if (EatIfPresent(lltok::kw_exact))
2340 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2341 ParseGlobalTypeAndValue(Val0) ||
2342 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2343 ParseGlobalTypeAndValue(Val1) ||
2344 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2346 if (Val0->getType() != Val1->getType())
2347 return Error(ID.Loc, "operands of constexpr must have same type");
2348 if (!Val0->getType()->isIntOrIntVectorTy()) {
2350 return Error(ModifierLoc, "nuw only applies to integer operations");
2352 return Error(ModifierLoc, "nsw only applies to integer operations");
2354 // API compatibility: Accept either integer or floating-point types with
2355 // add, sub, and mul.
2356 if (!Val0->getType()->isIntOrIntVectorTy() &&
2357 !Val0->getType()->isFPOrFPVectorTy())
2358 return Error(ID.Loc,"constexpr requires integer, fp, or vector operands");
2360 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2361 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2362 if (Exact) Flags |= SDivOperator::IsExact;
2363 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2365 ID.Kind = ValID::t_Constant;
2369 // Logical Operations
2371 case lltok::kw_lshr:
2372 case lltok::kw_ashr:
2375 case lltok::kw_xor: {
2376 unsigned Opc = Lex.getUIntVal();
2377 Constant *Val0, *Val1;
2379 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2380 ParseGlobalTypeAndValue(Val0) ||
2381 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2382 ParseGlobalTypeAndValue(Val1) ||
2383 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2385 if (Val0->getType() != Val1->getType())
2386 return Error(ID.Loc, "operands of constexpr must have same type");
2387 if (!Val0->getType()->isIntOrIntVectorTy())
2388 return Error(ID.Loc,
2389 "constexpr requires integer or integer vector operands");
2390 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2391 ID.Kind = ValID::t_Constant;
2395 case lltok::kw_getelementptr:
2396 case lltok::kw_shufflevector:
2397 case lltok::kw_insertelement:
2398 case lltok::kw_extractelement:
2399 case lltok::kw_select: {
2400 unsigned Opc = Lex.getUIntVal();
2401 SmallVector<Constant*, 16> Elts;
2402 bool InBounds = false;
2404 if (Opc == Instruction::GetElementPtr)
2405 InBounds = EatIfPresent(lltok::kw_inbounds);
2406 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2407 ParseGlobalValueVector(Elts) ||
2408 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2411 if (Opc == Instruction::GetElementPtr) {
2412 if (Elts.size() == 0 || !Elts[0]->getType()->isPointerTy())
2413 return Error(ID.Loc, "getelementptr requires pointer operand");
2415 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2416 (Value**)(Elts.data() + 1),
2418 return Error(ID.Loc, "invalid indices for getelementptr");
2419 ID.ConstantVal = InBounds ?
2420 ConstantExpr::getInBoundsGetElementPtr(Elts[0],
2423 ConstantExpr::getGetElementPtr(Elts[0],
2424 Elts.data() + 1, Elts.size() - 1);
2425 } else if (Opc == Instruction::Select) {
2426 if (Elts.size() != 3)
2427 return Error(ID.Loc, "expected three operands to select");
2428 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2430 return Error(ID.Loc, Reason);
2431 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2432 } else if (Opc == Instruction::ShuffleVector) {
2433 if (Elts.size() != 3)
2434 return Error(ID.Loc, "expected three operands to shufflevector");
2435 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2436 return Error(ID.Loc, "invalid operands to shufflevector");
2438 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2439 } else if (Opc == Instruction::ExtractElement) {
2440 if (Elts.size() != 2)
2441 return Error(ID.Loc, "expected two operands to extractelement");
2442 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2443 return Error(ID.Loc, "invalid extractelement operands");
2444 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2446 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2447 if (Elts.size() != 3)
2448 return Error(ID.Loc, "expected three operands to insertelement");
2449 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2450 return Error(ID.Loc, "invalid insertelement operands");
2452 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2455 ID.Kind = ValID::t_Constant;
2464 /// ParseGlobalValue - Parse a global value with the specified type.
2465 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&C) {
2469 bool Parsed = ParseValID(ID) ||
2470 ConvertValIDToValue(Ty, ID, V, NULL);
2471 if (V && !(C = dyn_cast<Constant>(V)))
2472 return Error(ID.Loc, "global values must be constants");
2476 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2477 PATypeHolder Type(Type::getVoidTy(Context));
2478 return ParseType(Type) ||
2479 ParseGlobalValue(Type, V);
2482 /// ParseGlobalValueVector
2484 /// ::= TypeAndValue (',' TypeAndValue)*
2485 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2487 if (Lex.getKind() == lltok::rbrace ||
2488 Lex.getKind() == lltok::rsquare ||
2489 Lex.getKind() == lltok::greater ||
2490 Lex.getKind() == lltok::rparen)
2494 if (ParseGlobalTypeAndValue(C)) return true;
2497 while (EatIfPresent(lltok::comma)) {
2498 if (ParseGlobalTypeAndValue(C)) return true;
2506 //===----------------------------------------------------------------------===//
2507 // Function Parsing.
2508 //===----------------------------------------------------------------------===//
2510 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2511 PerFunctionState *PFS) {
2512 if (Ty->isFunctionTy())
2513 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2516 default: llvm_unreachable("Unknown ValID!");
2517 case ValID::t_LocalID:
2518 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2519 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2521 case ValID::t_LocalName:
2522 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2523 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2525 case ValID::t_InlineAsm: {
2526 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2527 const FunctionType *FTy =
2528 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2529 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2530 return Error(ID.Loc, "invalid type for inline asm constraint string");
2531 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2534 case ValID::t_MDNode:
2535 if (!Ty->isMetadataTy())
2536 return Error(ID.Loc, "metadata value must have metadata type");
2539 case ValID::t_MDString:
2540 if (!Ty->isMetadataTy())
2541 return Error(ID.Loc, "metadata value must have metadata type");
2544 case ValID::t_GlobalName:
2545 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2547 case ValID::t_GlobalID:
2548 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2550 case ValID::t_APSInt:
2551 if (!Ty->isIntegerTy())
2552 return Error(ID.Loc, "integer constant must have integer type");
2553 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2554 V = ConstantInt::get(Context, ID.APSIntVal);
2556 case ValID::t_APFloat:
2557 if (!Ty->isFloatingPointTy() ||
2558 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2559 return Error(ID.Loc, "floating point constant invalid for type");
2561 // The lexer has no type info, so builds all float and double FP constants
2562 // as double. Fix this here. Long double does not need this.
2563 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2566 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2569 V = ConstantFP::get(Context, ID.APFloatVal);
2571 if (V->getType() != Ty)
2572 return Error(ID.Loc, "floating point constant does not have type '" +
2573 Ty->getDescription() + "'");
2577 if (!Ty->isPointerTy())
2578 return Error(ID.Loc, "null must be a pointer type");
2579 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2581 case ValID::t_Undef:
2582 // FIXME: LabelTy should not be a first-class type.
2583 if ((!Ty->isFirstClassType() || Ty->isLabelTy()) &&
2585 return Error(ID.Loc, "invalid type for undef constant");
2586 V = UndefValue::get(Ty);
2588 case ValID::t_EmptyArray:
2589 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2590 return Error(ID.Loc, "invalid empty array initializer");
2591 V = UndefValue::get(Ty);
2594 // FIXME: LabelTy should not be a first-class type.
2595 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2596 return Error(ID.Loc, "invalid type for null constant");
2597 V = Constant::getNullValue(Ty);
2599 case ValID::t_Constant:
2600 if (ID.ConstantVal->getType() != Ty) {
2601 // Allow a constant struct with a single member to be converted
2602 // to a union, if the union has a member which is the same type
2603 // as the struct member.
2604 if (const UnionType* utype = dyn_cast<UnionType>(Ty)) {
2605 return ParseUnionValue(utype, ID, V);
2608 return Error(ID.Loc, "constant expression type mismatch");
2616 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2619 return ParseValID(ID, &PFS) ||
2620 ConvertValIDToValue(Ty, ID, V, &PFS);
2623 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2624 PATypeHolder T(Type::getVoidTy(Context));
2625 return ParseType(T) ||
2626 ParseValue(T, V, PFS);
2629 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2630 PerFunctionState &PFS) {
2633 if (ParseTypeAndValue(V, PFS)) return true;
2634 if (!isa<BasicBlock>(V))
2635 return Error(Loc, "expected a basic block");
2636 BB = cast<BasicBlock>(V);
2640 bool LLParser::ParseUnionValue(const UnionType* utype, ValID &ID, Value *&V) {
2641 if (const StructType* stype = dyn_cast<StructType>(ID.ConstantVal->getType())) {
2642 if (stype->getNumContainedTypes() != 1)
2643 return Error(ID.Loc, "constant expression type mismatch");
2644 int index = utype->getElementTypeIndex(stype->getContainedType(0));
2646 return Error(ID.Loc, "initializer type is not a member of the union");
2648 V = ConstantUnion::get(
2649 utype, cast<Constant>(ID.ConstantVal->getOperand(0)));
2653 return Error(ID.Loc, "constant expression type mismatch");
2658 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2659 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2660 /// OptionalAlign OptGC
2661 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2662 // Parse the linkage.
2663 LocTy LinkageLoc = Lex.getLoc();
2666 unsigned Visibility, RetAttrs;
2668 PATypeHolder RetType(Type::getVoidTy(Context));
2669 LocTy RetTypeLoc = Lex.getLoc();
2670 if (ParseOptionalLinkage(Linkage) ||
2671 ParseOptionalVisibility(Visibility) ||
2672 ParseOptionalCallingConv(CC) ||
2673 ParseOptionalAttrs(RetAttrs, 1) ||
2674 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2677 // Verify that the linkage is ok.
2678 switch ((GlobalValue::LinkageTypes)Linkage) {
2679 case GlobalValue::ExternalLinkage:
2680 break; // always ok.
2681 case GlobalValue::DLLImportLinkage:
2682 case GlobalValue::ExternalWeakLinkage:
2684 return Error(LinkageLoc, "invalid linkage for function definition");
2686 case GlobalValue::PrivateLinkage:
2687 case GlobalValue::LinkerPrivateLinkage:
2688 case GlobalValue::InternalLinkage:
2689 case GlobalValue::AvailableExternallyLinkage:
2690 case GlobalValue::LinkOnceAnyLinkage:
2691 case GlobalValue::LinkOnceODRLinkage:
2692 case GlobalValue::WeakAnyLinkage:
2693 case GlobalValue::WeakODRLinkage:
2694 case GlobalValue::DLLExportLinkage:
2696 return Error(LinkageLoc, "invalid linkage for function declaration");
2698 case GlobalValue::AppendingLinkage:
2699 case GlobalValue::CommonLinkage:
2700 return Error(LinkageLoc, "invalid function linkage type");
2703 if (!FunctionType::isValidReturnType(RetType) ||
2704 RetType->isOpaqueTy())
2705 return Error(RetTypeLoc, "invalid function return type");
2707 LocTy NameLoc = Lex.getLoc();
2709 std::string FunctionName;
2710 if (Lex.getKind() == lltok::GlobalVar) {
2711 FunctionName = Lex.getStrVal();
2712 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2713 unsigned NameID = Lex.getUIntVal();
2715 if (NameID != NumberedVals.size())
2716 return TokError("function expected to be numbered '%" +
2717 utostr(NumberedVals.size()) + "'");
2719 return TokError("expected function name");
2724 if (Lex.getKind() != lltok::lparen)
2725 return TokError("expected '(' in function argument list");
2727 std::vector<ArgInfo> ArgList;
2730 std::string Section;
2734 if (ParseArgumentList(ArgList, isVarArg, false) ||
2735 ParseOptionalAttrs(FuncAttrs, 2) ||
2736 (EatIfPresent(lltok::kw_section) &&
2737 ParseStringConstant(Section)) ||
2738 ParseOptionalAlignment(Alignment) ||
2739 (EatIfPresent(lltok::kw_gc) &&
2740 ParseStringConstant(GC)))
2743 // If the alignment was parsed as an attribute, move to the alignment field.
2744 if (FuncAttrs & Attribute::Alignment) {
2745 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2746 FuncAttrs &= ~Attribute::Alignment;
2749 // Okay, if we got here, the function is syntactically valid. Convert types
2750 // and do semantic checks.
2751 std::vector<const Type*> ParamTypeList;
2752 SmallVector<AttributeWithIndex, 8> Attrs;
2753 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2755 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2756 if (FuncAttrs & ObsoleteFuncAttrs) {
2757 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2758 FuncAttrs &= ~ObsoleteFuncAttrs;
2761 if (RetAttrs != Attribute::None)
2762 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2764 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2765 ParamTypeList.push_back(ArgList[i].Type);
2766 if (ArgList[i].Attrs != Attribute::None)
2767 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2770 if (FuncAttrs != Attribute::None)
2771 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2773 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2775 if (PAL.paramHasAttr(1, Attribute::StructRet) && !RetType->isVoidTy())
2776 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2778 const FunctionType *FT =
2779 FunctionType::get(RetType, ParamTypeList, isVarArg);
2780 const PointerType *PFT = PointerType::getUnqual(FT);
2783 if (!FunctionName.empty()) {
2784 // If this was a definition of a forward reference, remove the definition
2785 // from the forward reference table and fill in the forward ref.
2786 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2787 ForwardRefVals.find(FunctionName);
2788 if (FRVI != ForwardRefVals.end()) {
2789 Fn = M->getFunction(FunctionName);
2790 ForwardRefVals.erase(FRVI);
2791 } else if ((Fn = M->getFunction(FunctionName))) {
2792 // If this function already exists in the symbol table, then it is
2793 // multiply defined. We accept a few cases for old backwards compat.
2794 // FIXME: Remove this stuff for LLVM 3.0.
2795 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2796 (!Fn->isDeclaration() && isDefine)) {
2797 // If the redefinition has different type or different attributes,
2798 // reject it. If both have bodies, reject it.
2799 return Error(NameLoc, "invalid redefinition of function '" +
2800 FunctionName + "'");
2801 } else if (Fn->isDeclaration()) {
2802 // Make sure to strip off any argument names so we can't get conflicts.
2803 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2807 } else if (M->getNamedValue(FunctionName)) {
2808 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2812 // If this is a definition of a forward referenced function, make sure the
2814 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2815 = ForwardRefValIDs.find(NumberedVals.size());
2816 if (I != ForwardRefValIDs.end()) {
2817 Fn = cast<Function>(I->second.first);
2818 if (Fn->getType() != PFT)
2819 return Error(NameLoc, "type of definition and forward reference of '@" +
2820 utostr(NumberedVals.size()) +"' disagree");
2821 ForwardRefValIDs.erase(I);
2826 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2827 else // Move the forward-reference to the correct spot in the module.
2828 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2830 if (FunctionName.empty())
2831 NumberedVals.push_back(Fn);
2833 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2834 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2835 Fn->setCallingConv(CC);
2836 Fn->setAttributes(PAL);
2837 Fn->setAlignment(Alignment);
2838 Fn->setSection(Section);
2839 if (!GC.empty()) Fn->setGC(GC.c_str());
2841 // Add all of the arguments we parsed to the function.
2842 Function::arg_iterator ArgIt = Fn->arg_begin();
2843 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2844 // If we run out of arguments in the Function prototype, exit early.
2845 // FIXME: REMOVE THIS IN LLVM 3.0, this is just for the mismatch case above.
2846 if (ArgIt == Fn->arg_end()) break;
2848 // If the argument has a name, insert it into the argument symbol table.
2849 if (ArgList[i].Name.empty()) continue;
2851 // Set the name, if it conflicted, it will be auto-renamed.
2852 ArgIt->setName(ArgList[i].Name);
2854 if (ArgIt->getNameStr() != ArgList[i].Name)
2855 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2856 ArgList[i].Name + "'");
2863 /// ParseFunctionBody
2864 /// ::= '{' BasicBlock+ '}'
2865 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2867 bool LLParser::ParseFunctionBody(Function &Fn) {
2868 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2869 return TokError("expected '{' in function body");
2870 Lex.Lex(); // eat the {.
2872 int FunctionNumber = -1;
2873 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2875 PerFunctionState PFS(*this, Fn, FunctionNumber);
2877 // We need at least one basic block.
2878 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_end)
2879 return TokError("function body requires at least one basic block");
2881 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2882 if (ParseBasicBlock(PFS)) return true;
2887 // Verify function is ok.
2888 return PFS.FinishFunction();
2892 /// ::= LabelStr? Instruction*
2893 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2894 // If this basic block starts out with a name, remember it.
2896 LocTy NameLoc = Lex.getLoc();
2897 if (Lex.getKind() == lltok::LabelStr) {
2898 Name = Lex.getStrVal();
2902 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2903 if (BB == 0) return true;
2905 std::string NameStr;
2907 // Parse the instructions in this block until we get a terminator.
2909 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2911 // This instruction may have three possibilities for a name: a) none
2912 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2913 LocTy NameLoc = Lex.getLoc();
2917 if (Lex.getKind() == lltok::LocalVarID) {
2918 NameID = Lex.getUIntVal();
2920 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2922 } else if (Lex.getKind() == lltok::LocalVar ||
2923 // FIXME: REMOVE IN LLVM 3.0
2924 Lex.getKind() == lltok::StringConstant) {
2925 NameStr = Lex.getStrVal();
2927 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2931 switch (ParseInstruction(Inst, BB, PFS)) {
2932 default: assert(0 && "Unknown ParseInstruction result!");
2933 case InstError: return true;
2935 BB->getInstList().push_back(Inst);
2937 // With a normal result, we check to see if the instruction is followed by
2938 // a comma and metadata.
2939 if (EatIfPresent(lltok::comma))
2940 if (ParseInstructionMetadata(Inst))
2943 case InstExtraComma:
2944 BB->getInstList().push_back(Inst);
2946 // If the instruction parser ate an extra comma at the end of it, it
2947 // *must* be followed by metadata.
2948 if (ParseInstructionMetadata(Inst))
2953 // Set the name on the instruction.
2954 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2955 } while (!isa<TerminatorInst>(Inst));
2960 //===----------------------------------------------------------------------===//
2961 // Instruction Parsing.
2962 //===----------------------------------------------------------------------===//
2964 /// ParseInstruction - Parse one of the many different instructions.
2966 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2967 PerFunctionState &PFS) {
2968 lltok::Kind Token = Lex.getKind();
2969 if (Token == lltok::Eof)
2970 return TokError("found end of file when expecting more instructions");
2971 LocTy Loc = Lex.getLoc();
2972 unsigned KeywordVal = Lex.getUIntVal();
2973 Lex.Lex(); // Eat the keyword.
2976 default: return Error(Loc, "expected instruction opcode");
2977 // Terminator Instructions.
2978 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
2979 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
2980 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
2981 case lltok::kw_br: return ParseBr(Inst, PFS);
2982 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
2983 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
2984 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
2985 // Binary Operators.
2988 case lltok::kw_mul: {
2991 LocTy ModifierLoc = Lex.getLoc();
2992 if (EatIfPresent(lltok::kw_nuw))
2994 if (EatIfPresent(lltok::kw_nsw)) {
2996 if (EatIfPresent(lltok::kw_nuw))
2999 // API compatibility: Accept either integer or floating-point types.
3000 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 0);
3002 if (!Inst->getType()->isIntOrIntVectorTy()) {
3004 return Error(ModifierLoc, "nuw only applies to integer operations");
3006 return Error(ModifierLoc, "nsw only applies to integer operations");
3009 cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3011 cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3015 case lltok::kw_fadd:
3016 case lltok::kw_fsub:
3017 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3019 case lltok::kw_sdiv: {
3021 if (EatIfPresent(lltok::kw_exact))
3023 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3026 cast<BinaryOperator>(Inst)->setIsExact(true);
3030 case lltok::kw_udiv:
3031 case lltok::kw_urem:
3032 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3033 case lltok::kw_fdiv:
3034 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3036 case lltok::kw_lshr:
3037 case lltok::kw_ashr:
3040 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3041 case lltok::kw_icmp:
3042 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3044 case lltok::kw_trunc:
3045 case lltok::kw_zext:
3046 case lltok::kw_sext:
3047 case lltok::kw_fptrunc:
3048 case lltok::kw_fpext:
3049 case lltok::kw_bitcast:
3050 case lltok::kw_uitofp:
3051 case lltok::kw_sitofp:
3052 case lltok::kw_fptoui:
3053 case lltok::kw_fptosi:
3054 case lltok::kw_inttoptr:
3055 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3057 case lltok::kw_select: return ParseSelect(Inst, PFS);
3058 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3059 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3060 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3061 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3062 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3063 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3064 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3066 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3067 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, BB, false);
3068 case lltok::kw_free: return ParseFree(Inst, PFS, BB);
3069 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
3070 case lltok::kw_store: return ParseStore(Inst, PFS, false);
3071 case lltok::kw_volatile:
3072 if (EatIfPresent(lltok::kw_load))
3073 return ParseLoad(Inst, PFS, true);
3074 else if (EatIfPresent(lltok::kw_store))
3075 return ParseStore(Inst, PFS, true);
3077 return TokError("expected 'load' or 'store'");
3078 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
3079 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3080 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3081 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3085 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3086 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3087 if (Opc == Instruction::FCmp) {
3088 switch (Lex.getKind()) {
3089 default: TokError("expected fcmp predicate (e.g. 'oeq')");
3090 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3091 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3092 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3093 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3094 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3095 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3096 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3097 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3098 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3099 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3100 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3101 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3102 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3103 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3104 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3105 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3108 switch (Lex.getKind()) {
3109 default: TokError("expected icmp predicate (e.g. 'eq')");
3110 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3111 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3112 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3113 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3114 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3115 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3116 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3117 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3118 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3119 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3126 //===----------------------------------------------------------------------===//
3127 // Terminator Instructions.
3128 //===----------------------------------------------------------------------===//
3130 /// ParseRet - Parse a return instruction.
3131 /// ::= 'ret' void (',' !dbg, !1)*
3132 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3133 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ (',' !dbg, !1)*
3134 /// [[obsolete: LLVM 3.0]]
3135 int LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3136 PerFunctionState &PFS) {
3137 PATypeHolder Ty(Type::getVoidTy(Context));
3138 if (ParseType(Ty, true /*void allowed*/)) return true;
3140 if (Ty->isVoidTy()) {
3141 Inst = ReturnInst::Create(Context);
3146 if (ParseValue(Ty, RV, PFS)) return true;
3148 bool ExtraComma = false;
3149 if (EatIfPresent(lltok::comma)) {
3150 // Parse optional custom metadata, e.g. !dbg
3151 if (Lex.getKind() == lltok::MetadataVar) {
3154 // The normal case is one return value.
3155 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring
3156 // use of 'ret {i32,i32} {i32 1, i32 2}'
3157 SmallVector<Value*, 8> RVs;
3161 // If optional custom metadata, e.g. !dbg is seen then this is the
3163 if (Lex.getKind() == lltok::MetadataVar)
3165 if (ParseTypeAndValue(RV, PFS)) return true;
3167 } while (EatIfPresent(lltok::comma));
3169 RV = UndefValue::get(PFS.getFunction().getReturnType());
3170 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
3171 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
3172 BB->getInstList().push_back(I);
3178 Inst = ReturnInst::Create(Context, RV);
3179 return ExtraComma ? InstExtraComma : InstNormal;
3184 /// ::= 'br' TypeAndValue
3185 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3186 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3189 BasicBlock *Op1, *Op2;
3190 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3192 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3193 Inst = BranchInst::Create(BB);
3197 if (Op0->getType() != Type::getInt1Ty(Context))
3198 return Error(Loc, "branch condition must have 'i1' type");
3200 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3201 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3202 ParseToken(lltok::comma, "expected ',' after true destination") ||
3203 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3206 Inst = BranchInst::Create(Op1, Op2, Op0);
3212 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3214 /// ::= (TypeAndValue ',' TypeAndValue)*
3215 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3216 LocTy CondLoc, BBLoc;
3218 BasicBlock *DefaultBB;
3219 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3220 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3221 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3222 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3225 if (!Cond->getType()->isIntegerTy())
3226 return Error(CondLoc, "switch condition must have integer type");
3228 // Parse the jump table pairs.
3229 SmallPtrSet<Value*, 32> SeenCases;
3230 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3231 while (Lex.getKind() != lltok::rsquare) {
3235 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3236 ParseToken(lltok::comma, "expected ',' after case value") ||
3237 ParseTypeAndBasicBlock(DestBB, PFS))
3240 if (!SeenCases.insert(Constant))
3241 return Error(CondLoc, "duplicate case value in switch");
3242 if (!isa<ConstantInt>(Constant))
3243 return Error(CondLoc, "case value is not a constant integer");
3245 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3248 Lex.Lex(); // Eat the ']'.
3250 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3251 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3252 SI->addCase(Table[i].first, Table[i].second);
3259 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3260 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3263 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3264 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3265 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3268 if (!Address->getType()->isPointerTy())
3269 return Error(AddrLoc, "indirectbr address must have pointer type");
3271 // Parse the destination list.
3272 SmallVector<BasicBlock*, 16> DestList;
3274 if (Lex.getKind() != lltok::rsquare) {
3276 if (ParseTypeAndBasicBlock(DestBB, PFS))
3278 DestList.push_back(DestBB);
3280 while (EatIfPresent(lltok::comma)) {
3281 if (ParseTypeAndBasicBlock(DestBB, PFS))
3283 DestList.push_back(DestBB);
3287 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3290 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3291 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3292 IBI->addDestination(DestList[i]);
3299 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3300 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3301 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3302 LocTy CallLoc = Lex.getLoc();
3303 unsigned RetAttrs, FnAttrs;
3305 PATypeHolder RetType(Type::getVoidTy(Context));
3308 SmallVector<ParamInfo, 16> ArgList;
3310 BasicBlock *NormalBB, *UnwindBB;
3311 if (ParseOptionalCallingConv(CC) ||
3312 ParseOptionalAttrs(RetAttrs, 1) ||
3313 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3314 ParseValID(CalleeID) ||
3315 ParseParameterList(ArgList, PFS) ||
3316 ParseOptionalAttrs(FnAttrs, 2) ||
3317 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3318 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3319 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3320 ParseTypeAndBasicBlock(UnwindBB, PFS))
3323 // If RetType is a non-function pointer type, then this is the short syntax
3324 // for the call, which means that RetType is just the return type. Infer the
3325 // rest of the function argument types from the arguments that are present.
3326 const PointerType *PFTy = 0;
3327 const FunctionType *Ty = 0;
3328 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3329 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3330 // Pull out the types of all of the arguments...
3331 std::vector<const Type*> ParamTypes;
3332 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3333 ParamTypes.push_back(ArgList[i].V->getType());
3335 if (!FunctionType::isValidReturnType(RetType))
3336 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3338 Ty = FunctionType::get(RetType, ParamTypes, false);
3339 PFTy = PointerType::getUnqual(Ty);
3342 // Look up the callee.
3344 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3346 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3347 // function attributes.
3348 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3349 if (FnAttrs & ObsoleteFuncAttrs) {
3350 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3351 FnAttrs &= ~ObsoleteFuncAttrs;
3354 // Set up the Attributes for the function.
3355 SmallVector<AttributeWithIndex, 8> Attrs;
3356 if (RetAttrs != Attribute::None)
3357 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3359 SmallVector<Value*, 8> Args;
3361 // Loop through FunctionType's arguments and ensure they are specified
3362 // correctly. Also, gather any parameter attributes.
3363 FunctionType::param_iterator I = Ty->param_begin();
3364 FunctionType::param_iterator E = Ty->param_end();
3365 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3366 const Type *ExpectedTy = 0;
3369 } else if (!Ty->isVarArg()) {
3370 return Error(ArgList[i].Loc, "too many arguments specified");
3373 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3374 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3375 ExpectedTy->getDescription() + "'");
3376 Args.push_back(ArgList[i].V);
3377 if (ArgList[i].Attrs != Attribute::None)
3378 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3382 return Error(CallLoc, "not enough parameters specified for call");
3384 if (FnAttrs != Attribute::None)
3385 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3387 // Finish off the Attributes and check them
3388 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3390 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB,
3391 Args.begin(), Args.end());
3392 II->setCallingConv(CC);
3393 II->setAttributes(PAL);
3400 //===----------------------------------------------------------------------===//
3401 // Binary Operators.
3402 //===----------------------------------------------------------------------===//
3405 /// ::= ArithmeticOps TypeAndValue ',' Value
3407 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3408 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3409 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3410 unsigned Opc, unsigned OperandType) {
3411 LocTy Loc; Value *LHS, *RHS;
3412 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3413 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3414 ParseValue(LHS->getType(), RHS, PFS))
3418 switch (OperandType) {
3419 default: llvm_unreachable("Unknown operand type!");
3420 case 0: // int or FP.
3421 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3422 LHS->getType()->isFPOrFPVectorTy();
3424 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3425 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3429 return Error(Loc, "invalid operand type for instruction");
3431 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3436 /// ::= ArithmeticOps TypeAndValue ',' Value {
3437 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3439 LocTy Loc; Value *LHS, *RHS;
3440 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3441 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3442 ParseValue(LHS->getType(), RHS, PFS))
3445 if (!LHS->getType()->isIntOrIntVectorTy())
3446 return Error(Loc,"instruction requires integer or integer vector operands");
3448 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3454 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3455 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3456 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3458 // Parse the integer/fp comparison predicate.
3462 if (ParseCmpPredicate(Pred, Opc) ||
3463 ParseTypeAndValue(LHS, Loc, PFS) ||
3464 ParseToken(lltok::comma, "expected ',' after compare value") ||
3465 ParseValue(LHS->getType(), RHS, PFS))
3468 if (Opc == Instruction::FCmp) {
3469 if (!LHS->getType()->isFPOrFPVectorTy())
3470 return Error(Loc, "fcmp requires floating point operands");
3471 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3473 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3474 if (!LHS->getType()->isIntOrIntVectorTy() &&
3475 !LHS->getType()->isPointerTy())
3476 return Error(Loc, "icmp requires integer operands");
3477 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3482 //===----------------------------------------------------------------------===//
3483 // Other Instructions.
3484 //===----------------------------------------------------------------------===//
3488 /// ::= CastOpc TypeAndValue 'to' Type
3489 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3491 LocTy Loc; Value *Op;
3492 PATypeHolder DestTy(Type::getVoidTy(Context));
3493 if (ParseTypeAndValue(Op, Loc, PFS) ||
3494 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3498 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3499 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3500 return Error(Loc, "invalid cast opcode for cast from '" +
3501 Op->getType()->getDescription() + "' to '" +
3502 DestTy->getDescription() + "'");
3504 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3509 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3510 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3512 Value *Op0, *Op1, *Op2;
3513 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3514 ParseToken(lltok::comma, "expected ',' after select condition") ||
3515 ParseTypeAndValue(Op1, PFS) ||
3516 ParseToken(lltok::comma, "expected ',' after select value") ||
3517 ParseTypeAndValue(Op2, PFS))
3520 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3521 return Error(Loc, Reason);
3523 Inst = SelectInst::Create(Op0, Op1, Op2);
3528 /// ::= 'va_arg' TypeAndValue ',' Type
3529 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3531 PATypeHolder EltTy(Type::getVoidTy(Context));
3533 if (ParseTypeAndValue(Op, PFS) ||
3534 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3535 ParseType(EltTy, TypeLoc))
3538 if (!EltTy->isFirstClassType())
3539 return Error(TypeLoc, "va_arg requires operand with first class type");
3541 Inst = new VAArgInst(Op, EltTy);
3545 /// ParseExtractElement
3546 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3547 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3550 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3551 ParseToken(lltok::comma, "expected ',' after extract value") ||
3552 ParseTypeAndValue(Op1, PFS))
3555 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3556 return Error(Loc, "invalid extractelement operands");
3558 Inst = ExtractElementInst::Create(Op0, Op1);
3562 /// ParseInsertElement
3563 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3564 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3566 Value *Op0, *Op1, *Op2;
3567 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3568 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3569 ParseTypeAndValue(Op1, PFS) ||
3570 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3571 ParseTypeAndValue(Op2, PFS))
3574 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3575 return Error(Loc, "invalid insertelement operands");
3577 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3581 /// ParseShuffleVector
3582 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3583 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3585 Value *Op0, *Op1, *Op2;
3586 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3587 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3588 ParseTypeAndValue(Op1, PFS) ||
3589 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3590 ParseTypeAndValue(Op2, PFS))
3593 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3594 return Error(Loc, "invalid extractelement operands");
3596 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3601 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3602 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3603 PATypeHolder Ty(Type::getVoidTy(Context));
3605 LocTy TypeLoc = Lex.getLoc();
3607 if (ParseType(Ty) ||
3608 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3609 ParseValue(Ty, Op0, PFS) ||
3610 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3611 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3612 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3615 bool AteExtraComma = false;
3616 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3618 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3620 if (!EatIfPresent(lltok::comma))
3623 if (Lex.getKind() == lltok::MetadataVar) {
3624 AteExtraComma = true;
3628 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3629 ParseValue(Ty, Op0, PFS) ||
3630 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3631 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3632 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3636 if (!Ty->isFirstClassType())
3637 return Error(TypeLoc, "phi node must have first class type");
3639 PHINode *PN = PHINode::Create(Ty);
3640 PN->reserveOperandSpace(PHIVals.size());
3641 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3642 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3644 return AteExtraComma ? InstExtraComma : InstNormal;
3648 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3649 /// ParameterList OptionalAttrs
3650 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3652 unsigned RetAttrs, FnAttrs;
3654 PATypeHolder RetType(Type::getVoidTy(Context));
3657 SmallVector<ParamInfo, 16> ArgList;
3658 LocTy CallLoc = Lex.getLoc();
3660 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3661 ParseOptionalCallingConv(CC) ||
3662 ParseOptionalAttrs(RetAttrs, 1) ||
3663 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3664 ParseValID(CalleeID) ||
3665 ParseParameterList(ArgList, PFS) ||
3666 ParseOptionalAttrs(FnAttrs, 2))
3669 // If RetType is a non-function pointer type, then this is the short syntax
3670 // for the call, which means that RetType is just the return type. Infer the
3671 // rest of the function argument types from the arguments that are present.
3672 const PointerType *PFTy = 0;
3673 const FunctionType *Ty = 0;
3674 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3675 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3676 // Pull out the types of all of the arguments...
3677 std::vector<const Type*> ParamTypes;
3678 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3679 ParamTypes.push_back(ArgList[i].V->getType());
3681 if (!FunctionType::isValidReturnType(RetType))
3682 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3684 Ty = FunctionType::get(RetType, ParamTypes, false);
3685 PFTy = PointerType::getUnqual(Ty);
3688 // Look up the callee.
3690 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3692 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3693 // function attributes.
3694 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3695 if (FnAttrs & ObsoleteFuncAttrs) {
3696 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3697 FnAttrs &= ~ObsoleteFuncAttrs;
3700 // Set up the Attributes for the function.
3701 SmallVector<AttributeWithIndex, 8> Attrs;
3702 if (RetAttrs != Attribute::None)
3703 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3705 SmallVector<Value*, 8> Args;
3707 // Loop through FunctionType's arguments and ensure they are specified
3708 // correctly. Also, gather any parameter attributes.
3709 FunctionType::param_iterator I = Ty->param_begin();
3710 FunctionType::param_iterator E = Ty->param_end();
3711 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3712 const Type *ExpectedTy = 0;
3715 } else if (!Ty->isVarArg()) {
3716 return Error(ArgList[i].Loc, "too many arguments specified");
3719 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3720 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3721 ExpectedTy->getDescription() + "'");
3722 Args.push_back(ArgList[i].V);
3723 if (ArgList[i].Attrs != Attribute::None)
3724 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3728 return Error(CallLoc, "not enough parameters specified for call");
3730 if (FnAttrs != Attribute::None)
3731 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3733 // Finish off the Attributes and check them
3734 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3736 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3737 CI->setTailCall(isTail);
3738 CI->setCallingConv(CC);
3739 CI->setAttributes(PAL);
3744 //===----------------------------------------------------------------------===//
3745 // Memory Instructions.
3746 //===----------------------------------------------------------------------===//
3749 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalInfo)?
3750 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3751 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3752 BasicBlock* BB, bool isAlloca) {
3753 PATypeHolder Ty(Type::getVoidTy(Context));
3756 unsigned Alignment = 0;
3757 if (ParseType(Ty)) return true;
3759 bool AteExtraComma = false;
3760 if (EatIfPresent(lltok::comma)) {
3761 if (Lex.getKind() == lltok::kw_align) {
3762 if (ParseOptionalAlignment(Alignment)) return true;
3763 } else if (Lex.getKind() == lltok::MetadataVar) {
3764 AteExtraComma = true;
3766 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3767 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3772 if (Size && !Size->getType()->isIntegerTy(32))
3773 return Error(SizeLoc, "element count must be i32");
3776 Inst = new AllocaInst(Ty, Size, Alignment);
3777 return AteExtraComma ? InstExtraComma : InstNormal;
3780 // Autoupgrade old malloc instruction to malloc call.
3781 // FIXME: Remove in LLVM 3.0.
3782 const Type *IntPtrTy = Type::getInt32Ty(Context);
3783 Constant *AllocSize = ConstantExpr::getSizeOf(Ty);
3784 AllocSize = ConstantExpr::getTruncOrBitCast(AllocSize, IntPtrTy);
3786 // Prototype malloc as "void *(int32)".
3787 // This function is renamed as "malloc" in ValidateEndOfModule().
3788 MallocF = cast<Function>(
3789 M->getOrInsertFunction("", Type::getInt8PtrTy(Context), IntPtrTy, NULL));
3790 Inst = CallInst::CreateMalloc(BB, IntPtrTy, Ty, AllocSize, Size, MallocF);
3791 return AteExtraComma ? InstExtraComma : InstNormal;
3795 /// ::= 'free' TypeAndValue
3796 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS,
3798 Value *Val; LocTy Loc;
3799 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3800 if (!Val->getType()->isPointerTy())
3801 return Error(Loc, "operand to free must be a pointer");
3802 Inst = CallInst::CreateFree(Val, BB);
3807 /// ::= 'volatile'? 'load' TypeAndValue (',' OptionalInfo)?
3808 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3810 Value *Val; LocTy Loc;
3811 unsigned Alignment = 0;
3812 bool AteExtraComma = false;
3813 if (ParseTypeAndValue(Val, Loc, PFS) ||
3814 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3817 if (!Val->getType()->isPointerTy() ||
3818 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3819 return Error(Loc, "load operand must be a pointer to a first class type");
3821 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3822 return AteExtraComma ? InstExtraComma : InstNormal;
3826 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3827 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3829 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3830 unsigned Alignment = 0;
3831 bool AteExtraComma = false;
3832 if (ParseTypeAndValue(Val, Loc, PFS) ||
3833 ParseToken(lltok::comma, "expected ',' after store operand") ||
3834 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3835 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3838 if (!Ptr->getType()->isPointerTy())
3839 return Error(PtrLoc, "store operand must be a pointer");
3840 if (!Val->getType()->isFirstClassType())
3841 return Error(Loc, "store operand must be a first class value");
3842 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3843 return Error(Loc, "stored value and pointer type do not match");
3845 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3846 return AteExtraComma ? InstExtraComma : InstNormal;
3850 /// ::= 'getresult' TypeAndValue ',' i32
3851 /// FIXME: Remove support for getresult in LLVM 3.0
3852 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3853 Value *Val; LocTy ValLoc, EltLoc;
3855 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3856 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3857 ParseUInt32(Element, EltLoc))
3860 if (!Val->getType()->isStructTy() && !Val->getType()->isArrayTy())
3861 return Error(ValLoc, "getresult inst requires an aggregate operand");
3862 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3863 return Error(EltLoc, "invalid getresult index for value");
3864 Inst = ExtractValueInst::Create(Val, Element);
3868 /// ParseGetElementPtr
3869 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3870 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3871 Value *Ptr, *Val; LocTy Loc, EltLoc;
3873 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3875 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3877 if (!Ptr->getType()->isPointerTy())
3878 return Error(Loc, "base of getelementptr must be a pointer");
3880 SmallVector<Value*, 16> Indices;
3881 bool AteExtraComma = false;
3882 while (EatIfPresent(lltok::comma)) {
3883 if (Lex.getKind() == lltok::MetadataVar) {
3884 AteExtraComma = true;
3887 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3888 if (!Val->getType()->isIntegerTy())
3889 return Error(EltLoc, "getelementptr index must be an integer");
3890 Indices.push_back(Val);
3893 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3894 Indices.begin(), Indices.end()))
3895 return Error(Loc, "invalid getelementptr indices");
3896 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3898 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3899 return AteExtraComma ? InstExtraComma : InstNormal;
3902 /// ParseExtractValue
3903 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3904 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3905 Value *Val; LocTy Loc;
3906 SmallVector<unsigned, 4> Indices;
3908 if (ParseTypeAndValue(Val, Loc, PFS) ||
3909 ParseIndexList(Indices, AteExtraComma))
3912 if (!Val->getType()->isAggregateType())
3913 return Error(Loc, "extractvalue operand must be aggregate type");
3915 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3917 return Error(Loc, "invalid indices for extractvalue");
3918 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3919 return AteExtraComma ? InstExtraComma : InstNormal;
3922 /// ParseInsertValue
3923 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3924 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3925 Value *Val0, *Val1; LocTy Loc0, Loc1;
3926 SmallVector<unsigned, 4> Indices;
3928 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3929 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3930 ParseTypeAndValue(Val1, Loc1, PFS) ||
3931 ParseIndexList(Indices, AteExtraComma))
3934 if (!Val0->getType()->isAggregateType())
3935 return Error(Loc0, "insertvalue operand must be aggregate type");
3937 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3939 return Error(Loc0, "invalid indices for insertvalue");
3940 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3941 return AteExtraComma ? InstExtraComma : InstNormal;
3944 //===----------------------------------------------------------------------===//
3945 // Embedded metadata.
3946 //===----------------------------------------------------------------------===//
3948 /// ParseMDNodeVector
3949 /// ::= Element (',' Element)*
3951 /// ::= 'null' | TypeAndValue
3952 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
3953 PerFunctionState *PFS) {
3955 // Null is a special case since it is typeless.
3956 if (EatIfPresent(lltok::kw_null)) {
3962 PATypeHolder Ty(Type::getVoidTy(Context));
3964 if (ParseType(Ty) || ParseValID(ID, PFS) ||
3965 ConvertValIDToValue(Ty, ID, V, PFS))
3969 } while (EatIfPresent(lltok::comma));