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 /// ::= 'x86_thiscallcc'
1078 /// ::= 'arm_apcscc'
1079 /// ::= 'arm_aapcscc'
1080 /// ::= 'arm_aapcs_vfpcc'
1081 /// ::= 'msp430_intrcc'
1084 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1085 switch (Lex.getKind()) {
1086 default: CC = CallingConv::C; return false;
1087 case lltok::kw_ccc: CC = CallingConv::C; break;
1088 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1089 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1090 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1091 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1092 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1093 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1094 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1095 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1096 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1097 case lltok::kw_cc: {
1098 unsigned ArbitraryCC;
1100 if (ParseUInt32(ArbitraryCC)) {
1103 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1113 /// ParseInstructionMetadata
1114 /// ::= !dbg !42 (',' !dbg !57)*
1115 bool LLParser::ParseInstructionMetadata(Instruction *Inst) {
1117 if (Lex.getKind() != lltok::MetadataVar)
1118 return TokError("expected metadata after comma");
1120 std::string Name = Lex.getStrVal();
1125 SMLoc Loc = Lex.getLoc();
1126 if (ParseToken(lltok::exclaim, "expected '!' here") ||
1127 ParseMDNodeID(Node, NodeID))
1130 unsigned MDK = M->getMDKindID(Name.c_str());
1132 // If we got the node, add it to the instruction.
1133 Inst->setMetadata(MDK, Node);
1135 MDRef R = { Loc, MDK, NodeID };
1136 // Otherwise, remember that this should be resolved later.
1137 ForwardRefInstMetadata[Inst].push_back(R);
1140 // If this is the end of the list, we're done.
1141 } while (EatIfPresent(lltok::comma));
1145 /// ParseOptionalAlignment
1148 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1150 if (!EatIfPresent(lltok::kw_align))
1152 LocTy AlignLoc = Lex.getLoc();
1153 if (ParseUInt32(Alignment)) return true;
1154 if (!isPowerOf2_32(Alignment))
1155 return Error(AlignLoc, "alignment is not a power of two");
1159 /// ParseOptionalCommaAlign
1163 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1165 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1166 bool &AteExtraComma) {
1167 AteExtraComma = false;
1168 while (EatIfPresent(lltok::comma)) {
1169 // Metadata at the end is an early exit.
1170 if (Lex.getKind() == lltok::MetadataVar) {
1171 AteExtraComma = true;
1175 if (Lex.getKind() != lltok::kw_align)
1176 return Error(Lex.getLoc(), "expected metadata or 'align'");
1178 if (ParseOptionalAlignment(Alignment)) return true;
1184 /// ParseOptionalStackAlignment
1186 /// ::= 'alignstack' '(' 4 ')'
1187 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1189 if (!EatIfPresent(lltok::kw_alignstack))
1191 LocTy ParenLoc = Lex.getLoc();
1192 if (!EatIfPresent(lltok::lparen))
1193 return Error(ParenLoc, "expected '('");
1194 LocTy AlignLoc = Lex.getLoc();
1195 if (ParseUInt32(Alignment)) return true;
1196 ParenLoc = Lex.getLoc();
1197 if (!EatIfPresent(lltok::rparen))
1198 return Error(ParenLoc, "expected ')'");
1199 if (!isPowerOf2_32(Alignment))
1200 return Error(AlignLoc, "stack alignment is not a power of two");
1204 /// ParseIndexList - This parses the index list for an insert/extractvalue
1205 /// instruction. This sets AteExtraComma in the case where we eat an extra
1206 /// comma at the end of the line and find that it is followed by metadata.
1207 /// Clients that don't allow metadata can call the version of this function that
1208 /// only takes one argument.
1211 /// ::= (',' uint32)+
1213 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1214 bool &AteExtraComma) {
1215 AteExtraComma = false;
1217 if (Lex.getKind() != lltok::comma)
1218 return TokError("expected ',' as start of index list");
1220 while (EatIfPresent(lltok::comma)) {
1221 if (Lex.getKind() == lltok::MetadataVar) {
1222 AteExtraComma = true;
1226 if (ParseUInt32(Idx)) return true;
1227 Indices.push_back(Idx);
1233 //===----------------------------------------------------------------------===//
1235 //===----------------------------------------------------------------------===//
1237 /// ParseType - Parse and resolve a full type.
1238 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1239 LocTy TypeLoc = Lex.getLoc();
1240 if (ParseTypeRec(Result)) return true;
1242 // Verify no unresolved uprefs.
1243 if (!UpRefs.empty())
1244 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1246 if (!AllowVoid && Result.get()->isVoidTy())
1247 return Error(TypeLoc, "void type only allowed for function results");
1252 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1253 /// called. It loops through the UpRefs vector, which is a list of the
1254 /// currently active types. For each type, if the up-reference is contained in
1255 /// the newly completed type, we decrement the level count. When the level
1256 /// count reaches zero, the up-referenced type is the type that is passed in:
1257 /// thus we can complete the cycle.
1259 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1260 // If Ty isn't abstract, or if there are no up-references in it, then there is
1261 // nothing to resolve here.
1262 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1264 PATypeHolder Ty(ty);
1266 dbgs() << "Type '" << Ty->getDescription()
1267 << "' newly formed. Resolving upreferences.\n"
1268 << UpRefs.size() << " upreferences active!\n";
1271 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1272 // to zero), we resolve them all together before we resolve them to Ty. At
1273 // the end of the loop, if there is anything to resolve to Ty, it will be in
1275 OpaqueType *TypeToResolve = 0;
1277 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1278 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1280 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1281 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1284 dbgs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1285 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1286 << (ContainsType ? "true" : "false")
1287 << " level=" << UpRefs[i].NestingLevel << "\n";
1292 // Decrement level of upreference
1293 unsigned Level = --UpRefs[i].NestingLevel;
1294 UpRefs[i].LastContainedTy = Ty;
1296 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1301 dbgs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1304 TypeToResolve = UpRefs[i].UpRefTy;
1306 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1307 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1308 --i; // Do not skip the next element.
1312 TypeToResolve->refineAbstractTypeTo(Ty);
1318 /// ParseTypeRec - The recursive function used to process the internal
1319 /// implementation details of types.
1320 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1321 switch (Lex.getKind()) {
1323 return TokError("expected type");
1325 // TypeRec ::= 'float' | 'void' (etc)
1326 Result = Lex.getTyVal();
1329 case lltok::kw_opaque:
1330 // TypeRec ::= 'opaque'
1331 Result = OpaqueType::get(Context);
1335 // TypeRec ::= '{' ... '}'
1336 if (ParseStructType(Result, false))
1339 case lltok::kw_union:
1340 // TypeRec ::= 'union' '{' ... '}'
1341 if (ParseUnionType(Result))
1344 case lltok::lsquare:
1345 // TypeRec ::= '[' ... ']'
1346 Lex.Lex(); // eat the lsquare.
1347 if (ParseArrayVectorType(Result, false))
1350 case lltok::less: // Either vector or packed struct.
1351 // TypeRec ::= '<' ... '>'
1353 if (Lex.getKind() == lltok::lbrace) {
1354 if (ParseStructType(Result, true) ||
1355 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1357 } else if (ParseArrayVectorType(Result, true))
1360 case lltok::LocalVar:
1361 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1363 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1366 Result = OpaqueType::get(Context);
1367 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1368 std::make_pair(Result,
1370 M->addTypeName(Lex.getStrVal(), Result.get());
1375 case lltok::LocalVarID:
1377 if (Lex.getUIntVal() < NumberedTypes.size())
1378 Result = NumberedTypes[Lex.getUIntVal()];
1380 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1381 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1382 if (I != ForwardRefTypeIDs.end())
1383 Result = I->second.first;
1385 Result = OpaqueType::get(Context);
1386 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1387 std::make_pair(Result,
1393 case lltok::backslash: {
1394 // TypeRec ::= '\' 4
1397 if (ParseUInt32(Val)) return true;
1398 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1399 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1405 // Parse the type suffixes.
1407 switch (Lex.getKind()) {
1409 default: return false;
1411 // TypeRec ::= TypeRec '*'
1413 if (Result.get()->isLabelTy())
1414 return TokError("basic block pointers are invalid");
1415 if (Result.get()->isVoidTy())
1416 return TokError("pointers to void are invalid; use i8* instead");
1417 if (!PointerType::isValidElementType(Result.get()))
1418 return TokError("pointer to this type is invalid");
1419 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1423 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1424 case lltok::kw_addrspace: {
1425 if (Result.get()->isLabelTy())
1426 return TokError("basic block pointers are invalid");
1427 if (Result.get()->isVoidTy())
1428 return TokError("pointers to void are invalid; use i8* instead");
1429 if (!PointerType::isValidElementType(Result.get()))
1430 return TokError("pointer to this type is invalid");
1432 if (ParseOptionalAddrSpace(AddrSpace) ||
1433 ParseToken(lltok::star, "expected '*' in address space"))
1436 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1440 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1442 if (ParseFunctionType(Result))
1449 /// ParseParameterList
1451 /// ::= '(' Arg (',' Arg)* ')'
1453 /// ::= Type OptionalAttributes Value OptionalAttributes
1454 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1455 PerFunctionState &PFS) {
1456 if (ParseToken(lltok::lparen, "expected '(' in call"))
1459 while (Lex.getKind() != lltok::rparen) {
1460 // If this isn't the first argument, we need a comma.
1461 if (!ArgList.empty() &&
1462 ParseToken(lltok::comma, "expected ',' in argument list"))
1465 // Parse the argument.
1467 PATypeHolder ArgTy(Type::getVoidTy(Context));
1468 unsigned ArgAttrs1 = Attribute::None;
1469 unsigned ArgAttrs2 = Attribute::None;
1471 if (ParseType(ArgTy, ArgLoc))
1474 // Otherwise, handle normal operands.
1475 if (ParseOptionalAttrs(ArgAttrs1, 0) ||
1476 ParseValue(ArgTy, V, PFS) ||
1477 // FIXME: Should not allow attributes after the argument, remove this
1479 ParseOptionalAttrs(ArgAttrs2, 3))
1481 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1484 Lex.Lex(); // Lex the ')'.
1490 /// ParseArgumentList - Parse the argument list for a function type or function
1491 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1492 /// ::= '(' ArgTypeListI ')'
1496 /// ::= ArgTypeList ',' '...'
1497 /// ::= ArgType (',' ArgType)*
1499 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1500 bool &isVarArg, bool inType) {
1502 assert(Lex.getKind() == lltok::lparen);
1503 Lex.Lex(); // eat the (.
1505 if (Lex.getKind() == lltok::rparen) {
1507 } else if (Lex.getKind() == lltok::dotdotdot) {
1511 LocTy TypeLoc = Lex.getLoc();
1512 PATypeHolder ArgTy(Type::getVoidTy(Context));
1516 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1517 // types (such as a function returning a pointer to itself). If parsing a
1518 // function prototype, we require fully resolved types.
1519 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1520 ParseOptionalAttrs(Attrs, 0)) return true;
1522 if (ArgTy->isVoidTy())
1523 return Error(TypeLoc, "argument can not have void type");
1525 if (Lex.getKind() == lltok::LocalVar ||
1526 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1527 Name = Lex.getStrVal();
1531 if (!FunctionType::isValidArgumentType(ArgTy))
1532 return Error(TypeLoc, "invalid type for function argument");
1534 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1536 while (EatIfPresent(lltok::comma)) {
1537 // Handle ... at end of arg list.
1538 if (EatIfPresent(lltok::dotdotdot)) {
1543 // Otherwise must be an argument type.
1544 TypeLoc = Lex.getLoc();
1545 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1546 ParseOptionalAttrs(Attrs, 0)) return true;
1548 if (ArgTy->isVoidTy())
1549 return Error(TypeLoc, "argument can not have void type");
1551 if (Lex.getKind() == lltok::LocalVar ||
1552 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1553 Name = Lex.getStrVal();
1559 if (!ArgTy->isFirstClassType() && !ArgTy->isOpaqueTy())
1560 return Error(TypeLoc, "invalid type for function argument");
1562 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1566 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1569 /// ParseFunctionType
1570 /// ::= Type ArgumentList OptionalAttrs
1571 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1572 assert(Lex.getKind() == lltok::lparen);
1574 if (!FunctionType::isValidReturnType(Result))
1575 return TokError("invalid function return type");
1577 std::vector<ArgInfo> ArgList;
1580 if (ParseArgumentList(ArgList, isVarArg, true) ||
1581 // FIXME: Allow, but ignore attributes on function types!
1582 // FIXME: Remove in LLVM 3.0
1583 ParseOptionalAttrs(Attrs, 2))
1586 // Reject names on the arguments lists.
1587 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1588 if (!ArgList[i].Name.empty())
1589 return Error(ArgList[i].Loc, "argument name invalid in function type");
1590 if (!ArgList[i].Attrs != 0) {
1591 // Allow but ignore attributes on function types; this permits
1593 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1597 std::vector<const Type*> ArgListTy;
1598 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1599 ArgListTy.push_back(ArgList[i].Type);
1601 Result = HandleUpRefs(FunctionType::get(Result.get(),
1602 ArgListTy, isVarArg));
1606 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1609 /// ::= '{' TypeRec (',' TypeRec)* '}'
1610 /// ::= '<' '{' '}' '>'
1611 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1612 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1613 assert(Lex.getKind() == lltok::lbrace);
1614 Lex.Lex(); // Consume the '{'
1616 if (EatIfPresent(lltok::rbrace)) {
1617 Result = StructType::get(Context, Packed);
1621 std::vector<PATypeHolder> ParamsList;
1622 LocTy EltTyLoc = Lex.getLoc();
1623 if (ParseTypeRec(Result)) return true;
1624 ParamsList.push_back(Result);
1626 if (Result->isVoidTy())
1627 return Error(EltTyLoc, "struct element can not have void type");
1628 if (!StructType::isValidElementType(Result))
1629 return Error(EltTyLoc, "invalid element type for struct");
1631 while (EatIfPresent(lltok::comma)) {
1632 EltTyLoc = Lex.getLoc();
1633 if (ParseTypeRec(Result)) return true;
1635 if (Result->isVoidTy())
1636 return Error(EltTyLoc, "struct element can not have void type");
1637 if (!StructType::isValidElementType(Result))
1638 return Error(EltTyLoc, "invalid element type for struct");
1640 ParamsList.push_back(Result);
1643 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1646 std::vector<const Type*> ParamsListTy;
1647 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1648 ParamsListTy.push_back(ParamsList[i].get());
1649 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1655 /// ::= 'union' '{' TypeRec (',' TypeRec)* '}'
1656 bool LLParser::ParseUnionType(PATypeHolder &Result) {
1657 assert(Lex.getKind() == lltok::kw_union);
1658 Lex.Lex(); // Consume the 'union'
1660 if (ParseToken(lltok::lbrace, "'{' expected after 'union'")) return true;
1662 SmallVector<PATypeHolder, 8> ParamsList;
1664 LocTy EltTyLoc = Lex.getLoc();
1665 if (ParseTypeRec(Result)) return true;
1666 ParamsList.push_back(Result);
1668 if (Result->isVoidTy())
1669 return Error(EltTyLoc, "union element can not have void type");
1670 if (!UnionType::isValidElementType(Result))
1671 return Error(EltTyLoc, "invalid element type for union");
1673 } while (EatIfPresent(lltok::comma)) ;
1675 if (ParseToken(lltok::rbrace, "expected '}' at end of union"))
1678 SmallVector<const Type*, 8> ParamsListTy;
1679 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1680 ParamsListTy.push_back(ParamsList[i].get());
1681 Result = HandleUpRefs(UnionType::get(&ParamsListTy[0], ParamsListTy.size()));
1685 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1686 /// token has already been consumed.
1688 /// ::= '[' APSINTVAL 'x' Types ']'
1689 /// ::= '<' APSINTVAL 'x' Types '>'
1690 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1691 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1692 Lex.getAPSIntVal().getBitWidth() > 64)
1693 return TokError("expected number in address space");
1695 LocTy SizeLoc = Lex.getLoc();
1696 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1699 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1702 LocTy TypeLoc = Lex.getLoc();
1703 PATypeHolder EltTy(Type::getVoidTy(Context));
1704 if (ParseTypeRec(EltTy)) return true;
1706 if (EltTy->isVoidTy())
1707 return Error(TypeLoc, "array and vector element type cannot be void");
1709 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1710 "expected end of sequential type"))
1715 return Error(SizeLoc, "zero element vector is illegal");
1716 if ((unsigned)Size != Size)
1717 return Error(SizeLoc, "size too large for vector");
1718 if (!VectorType::isValidElementType(EltTy))
1719 return Error(TypeLoc, "vector element type must be fp or integer");
1720 Result = VectorType::get(EltTy, unsigned(Size));
1722 if (!ArrayType::isValidElementType(EltTy))
1723 return Error(TypeLoc, "invalid array element type");
1724 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1729 //===----------------------------------------------------------------------===//
1730 // Function Semantic Analysis.
1731 //===----------------------------------------------------------------------===//
1733 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1735 : P(p), F(f), FunctionNumber(functionNumber) {
1737 // Insert unnamed arguments into the NumberedVals list.
1738 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1741 NumberedVals.push_back(AI);
1744 LLParser::PerFunctionState::~PerFunctionState() {
1745 // If there were any forward referenced non-basicblock values, delete them.
1746 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1747 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1748 if (!isa<BasicBlock>(I->second.first)) {
1749 I->second.first->replaceAllUsesWith(
1750 UndefValue::get(I->second.first->getType()));
1751 delete I->second.first;
1752 I->second.first = 0;
1755 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1756 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1757 if (!isa<BasicBlock>(I->second.first)) {
1758 I->second.first->replaceAllUsesWith(
1759 UndefValue::get(I->second.first->getType()));
1760 delete I->second.first;
1761 I->second.first = 0;
1765 bool LLParser::PerFunctionState::FinishFunction() {
1766 // Check to see if someone took the address of labels in this block.
1767 if (!P.ForwardRefBlockAddresses.empty()) {
1769 if (!F.getName().empty()) {
1770 FunctionID.Kind = ValID::t_GlobalName;
1771 FunctionID.StrVal = F.getName();
1773 FunctionID.Kind = ValID::t_GlobalID;
1774 FunctionID.UIntVal = FunctionNumber;
1777 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1778 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1779 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1780 // Resolve all these references.
1781 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1784 P.ForwardRefBlockAddresses.erase(FRBAI);
1788 if (!ForwardRefVals.empty())
1789 return P.Error(ForwardRefVals.begin()->second.second,
1790 "use of undefined value '%" + ForwardRefVals.begin()->first +
1792 if (!ForwardRefValIDs.empty())
1793 return P.Error(ForwardRefValIDs.begin()->second.second,
1794 "use of undefined value '%" +
1795 utostr(ForwardRefValIDs.begin()->first) + "'");
1800 /// GetVal - Get a value with the specified name or ID, creating a
1801 /// forward reference record if needed. This can return null if the value
1802 /// exists but does not have the right type.
1803 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1804 const Type *Ty, LocTy Loc) {
1805 // Look this name up in the normal function symbol table.
1806 Value *Val = F.getValueSymbolTable().lookup(Name);
1808 // If this is a forward reference for the value, see if we already created a
1809 // forward ref record.
1811 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1812 I = ForwardRefVals.find(Name);
1813 if (I != ForwardRefVals.end())
1814 Val = I->second.first;
1817 // If we have the value in the symbol table or fwd-ref table, return it.
1819 if (Val->getType() == Ty) return Val;
1820 if (Ty->isLabelTy())
1821 P.Error(Loc, "'%" + Name + "' is not a basic block");
1823 P.Error(Loc, "'%" + Name + "' defined with type '" +
1824 Val->getType()->getDescription() + "'");
1828 // Don't make placeholders with invalid type.
1829 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1830 P.Error(Loc, "invalid use of a non-first-class type");
1834 // Otherwise, create a new forward reference for this value and remember it.
1836 if (Ty->isLabelTy())
1837 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1839 FwdVal = new Argument(Ty, Name);
1841 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1845 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1847 // Look this name up in the normal function symbol table.
1848 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1850 // If this is a forward reference for the value, see if we already created a
1851 // forward ref record.
1853 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1854 I = ForwardRefValIDs.find(ID);
1855 if (I != ForwardRefValIDs.end())
1856 Val = I->second.first;
1859 // If we have the value in the symbol table or fwd-ref table, return it.
1861 if (Val->getType() == Ty) return Val;
1862 if (Ty->isLabelTy())
1863 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1865 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1866 Val->getType()->getDescription() + "'");
1870 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1871 P.Error(Loc, "invalid use of a non-first-class type");
1875 // Otherwise, create a new forward reference for this value and remember it.
1877 if (Ty->isLabelTy())
1878 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1880 FwdVal = new Argument(Ty);
1882 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1886 /// SetInstName - After an instruction is parsed and inserted into its
1887 /// basic block, this installs its name.
1888 bool LLParser::PerFunctionState::SetInstName(int NameID,
1889 const std::string &NameStr,
1890 LocTy NameLoc, Instruction *Inst) {
1891 // If this instruction has void type, it cannot have a name or ID specified.
1892 if (Inst->getType()->isVoidTy()) {
1893 if (NameID != -1 || !NameStr.empty())
1894 return P.Error(NameLoc, "instructions returning void cannot have a name");
1898 // If this was a numbered instruction, verify that the instruction is the
1899 // expected value and resolve any forward references.
1900 if (NameStr.empty()) {
1901 // If neither a name nor an ID was specified, just use the next ID.
1903 NameID = NumberedVals.size();
1905 if (unsigned(NameID) != NumberedVals.size())
1906 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1907 utostr(NumberedVals.size()) + "'");
1909 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1910 ForwardRefValIDs.find(NameID);
1911 if (FI != ForwardRefValIDs.end()) {
1912 if (FI->second.first->getType() != Inst->getType())
1913 return P.Error(NameLoc, "instruction forward referenced with type '" +
1914 FI->second.first->getType()->getDescription() + "'");
1915 FI->second.first->replaceAllUsesWith(Inst);
1916 delete FI->second.first;
1917 ForwardRefValIDs.erase(FI);
1920 NumberedVals.push_back(Inst);
1924 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1925 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1926 FI = ForwardRefVals.find(NameStr);
1927 if (FI != ForwardRefVals.end()) {
1928 if (FI->second.first->getType() != Inst->getType())
1929 return P.Error(NameLoc, "instruction forward referenced with type '" +
1930 FI->second.first->getType()->getDescription() + "'");
1931 FI->second.first->replaceAllUsesWith(Inst);
1932 delete FI->second.first;
1933 ForwardRefVals.erase(FI);
1936 // Set the name on the instruction.
1937 Inst->setName(NameStr);
1939 if (Inst->getNameStr() != NameStr)
1940 return P.Error(NameLoc, "multiple definition of local value named '" +
1945 /// GetBB - Get a basic block with the specified name or ID, creating a
1946 /// forward reference record if needed.
1947 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1949 return cast_or_null<BasicBlock>(GetVal(Name,
1950 Type::getLabelTy(F.getContext()), Loc));
1953 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1954 return cast_or_null<BasicBlock>(GetVal(ID,
1955 Type::getLabelTy(F.getContext()), Loc));
1958 /// DefineBB - Define the specified basic block, which is either named or
1959 /// unnamed. If there is an error, this returns null otherwise it returns
1960 /// the block being defined.
1961 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1965 BB = GetBB(NumberedVals.size(), Loc);
1967 BB = GetBB(Name, Loc);
1968 if (BB == 0) return 0; // Already diagnosed error.
1970 // Move the block to the end of the function. Forward ref'd blocks are
1971 // inserted wherever they happen to be referenced.
1972 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1974 // Remove the block from forward ref sets.
1976 ForwardRefValIDs.erase(NumberedVals.size());
1977 NumberedVals.push_back(BB);
1979 // BB forward references are already in the function symbol table.
1980 ForwardRefVals.erase(Name);
1986 //===----------------------------------------------------------------------===//
1988 //===----------------------------------------------------------------------===//
1990 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1991 /// type implied. For example, if we parse "4" we don't know what integer type
1992 /// it has. The value will later be combined with its type and checked for
1993 /// sanity. PFS is used to convert function-local operands of metadata (since
1994 /// metadata operands are not just parsed here but also converted to values).
1995 /// PFS can be null when we are not parsing metadata values inside a function.
1996 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
1997 ID.Loc = Lex.getLoc();
1998 switch (Lex.getKind()) {
1999 default: return TokError("expected value token");
2000 case lltok::GlobalID: // @42
2001 ID.UIntVal = Lex.getUIntVal();
2002 ID.Kind = ValID::t_GlobalID;
2004 case lltok::GlobalVar: // @foo
2005 ID.StrVal = Lex.getStrVal();
2006 ID.Kind = ValID::t_GlobalName;
2008 case lltok::LocalVarID: // %42
2009 ID.UIntVal = Lex.getUIntVal();
2010 ID.Kind = ValID::t_LocalID;
2012 case lltok::LocalVar: // %foo
2013 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
2014 ID.StrVal = Lex.getStrVal();
2015 ID.Kind = ValID::t_LocalName;
2017 case lltok::exclaim: // !{...} MDNode, !"foo" MDString
2020 if (EatIfPresent(lltok::lbrace)) {
2021 SmallVector<Value*, 16> Elts;
2022 if (ParseMDNodeVector(Elts, PFS) ||
2023 ParseToken(lltok::rbrace, "expected end of metadata node"))
2026 ID.MDNodeVal = MDNode::get(Context, Elts.data(), Elts.size());
2027 ID.Kind = ValID::t_MDNode;
2031 // Standalone metadata reference
2032 // !{ ..., !42, ... }
2033 if (Lex.getKind() == lltok::APSInt) {
2034 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2035 ID.Kind = ValID::t_MDNode;
2040 // ::= '!' STRINGCONSTANT
2041 if (ParseMDString(ID.MDStringVal)) return true;
2042 ID.Kind = ValID::t_MDString;
2045 ID.APSIntVal = Lex.getAPSIntVal();
2046 ID.Kind = ValID::t_APSInt;
2048 case lltok::APFloat:
2049 ID.APFloatVal = Lex.getAPFloatVal();
2050 ID.Kind = ValID::t_APFloat;
2052 case lltok::kw_true:
2053 ID.ConstantVal = ConstantInt::getTrue(Context);
2054 ID.Kind = ValID::t_Constant;
2056 case lltok::kw_false:
2057 ID.ConstantVal = ConstantInt::getFalse(Context);
2058 ID.Kind = ValID::t_Constant;
2060 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2061 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2062 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2064 case lltok::lbrace: {
2065 // ValID ::= '{' ConstVector '}'
2067 SmallVector<Constant*, 16> Elts;
2068 if (ParseGlobalValueVector(Elts) ||
2069 ParseToken(lltok::rbrace, "expected end of struct constant"))
2072 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
2073 Elts.size(), false);
2074 ID.Kind = ValID::t_Constant;
2078 // ValID ::= '<' ConstVector '>' --> Vector.
2079 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2081 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2083 SmallVector<Constant*, 16> Elts;
2084 LocTy FirstEltLoc = Lex.getLoc();
2085 if (ParseGlobalValueVector(Elts) ||
2087 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2088 ParseToken(lltok::greater, "expected end of constant"))
2091 if (isPackedStruct) {
2093 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
2094 ID.Kind = ValID::t_Constant;
2099 return Error(ID.Loc, "constant vector must not be empty");
2101 if (!Elts[0]->getType()->isIntegerTy() &&
2102 !Elts[0]->getType()->isFloatingPointTy())
2103 return Error(FirstEltLoc,
2104 "vector elements must have integer or floating point type");
2106 // Verify that all the vector elements have the same type.
2107 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2108 if (Elts[i]->getType() != Elts[0]->getType())
2109 return Error(FirstEltLoc,
2110 "vector element #" + utostr(i) +
2111 " is not of type '" + Elts[0]->getType()->getDescription());
2113 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
2114 ID.Kind = ValID::t_Constant;
2117 case lltok::lsquare: { // Array Constant
2119 SmallVector<Constant*, 16> Elts;
2120 LocTy FirstEltLoc = Lex.getLoc();
2121 if (ParseGlobalValueVector(Elts) ||
2122 ParseToken(lltok::rsquare, "expected end of array constant"))
2125 // Handle empty element.
2127 // Use undef instead of an array because it's inconvenient to determine
2128 // the element type at this point, there being no elements to examine.
2129 ID.Kind = ValID::t_EmptyArray;
2133 if (!Elts[0]->getType()->isFirstClassType())
2134 return Error(FirstEltLoc, "invalid array element type: " +
2135 Elts[0]->getType()->getDescription());
2137 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2139 // Verify all elements are correct type!
2140 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2141 if (Elts[i]->getType() != Elts[0]->getType())
2142 return Error(FirstEltLoc,
2143 "array element #" + utostr(i) +
2144 " is not of type '" +Elts[0]->getType()->getDescription());
2147 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
2148 ID.Kind = ValID::t_Constant;
2151 case lltok::kw_c: // c "foo"
2153 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
2154 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2155 ID.Kind = ValID::t_Constant;
2158 case lltok::kw_asm: {
2159 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2160 bool HasSideEffect, AlignStack;
2162 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2163 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2164 ParseStringConstant(ID.StrVal) ||
2165 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2166 ParseToken(lltok::StringConstant, "expected constraint string"))
2168 ID.StrVal2 = Lex.getStrVal();
2169 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2170 ID.Kind = ValID::t_InlineAsm;
2174 case lltok::kw_blockaddress: {
2175 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2179 LocTy FnLoc, LabelLoc;
2181 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2183 ParseToken(lltok::comma, "expected comma in block address expression")||
2184 ParseValID(Label) ||
2185 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2188 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2189 return Error(Fn.Loc, "expected function name in blockaddress");
2190 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2191 return Error(Label.Loc, "expected basic block name in blockaddress");
2193 // Make a global variable as a placeholder for this reference.
2194 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2195 false, GlobalValue::InternalLinkage,
2197 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2198 ID.ConstantVal = FwdRef;
2199 ID.Kind = ValID::t_Constant;
2203 case lltok::kw_trunc:
2204 case lltok::kw_zext:
2205 case lltok::kw_sext:
2206 case lltok::kw_fptrunc:
2207 case lltok::kw_fpext:
2208 case lltok::kw_bitcast:
2209 case lltok::kw_uitofp:
2210 case lltok::kw_sitofp:
2211 case lltok::kw_fptoui:
2212 case lltok::kw_fptosi:
2213 case lltok::kw_inttoptr:
2214 case lltok::kw_ptrtoint: {
2215 unsigned Opc = Lex.getUIntVal();
2216 PATypeHolder DestTy(Type::getVoidTy(Context));
2219 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2220 ParseGlobalTypeAndValue(SrcVal) ||
2221 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2222 ParseType(DestTy) ||
2223 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2225 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2226 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2227 SrcVal->getType()->getDescription() + "' to '" +
2228 DestTy->getDescription() + "'");
2229 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2231 ID.Kind = ValID::t_Constant;
2234 case lltok::kw_extractvalue: {
2237 SmallVector<unsigned, 4> Indices;
2238 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2239 ParseGlobalTypeAndValue(Val) ||
2240 ParseIndexList(Indices) ||
2241 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2244 if (!Val->getType()->isAggregateType())
2245 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2246 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
2248 return Error(ID.Loc, "invalid indices for extractvalue");
2250 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
2251 ID.Kind = ValID::t_Constant;
2254 case lltok::kw_insertvalue: {
2256 Constant *Val0, *Val1;
2257 SmallVector<unsigned, 4> Indices;
2258 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2259 ParseGlobalTypeAndValue(Val0) ||
2260 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2261 ParseGlobalTypeAndValue(Val1) ||
2262 ParseIndexList(Indices) ||
2263 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2265 if (!Val0->getType()->isAggregateType())
2266 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2267 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
2269 return Error(ID.Loc, "invalid indices for insertvalue");
2270 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
2271 Indices.data(), Indices.size());
2272 ID.Kind = ValID::t_Constant;
2275 case lltok::kw_icmp:
2276 case lltok::kw_fcmp: {
2277 unsigned PredVal, Opc = Lex.getUIntVal();
2278 Constant *Val0, *Val1;
2280 if (ParseCmpPredicate(PredVal, Opc) ||
2281 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2282 ParseGlobalTypeAndValue(Val0) ||
2283 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2284 ParseGlobalTypeAndValue(Val1) ||
2285 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2288 if (Val0->getType() != Val1->getType())
2289 return Error(ID.Loc, "compare operands must have the same type");
2291 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2293 if (Opc == Instruction::FCmp) {
2294 if (!Val0->getType()->isFPOrFPVectorTy())
2295 return Error(ID.Loc, "fcmp requires floating point operands");
2296 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2298 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2299 if (!Val0->getType()->isIntOrIntVectorTy() &&
2300 !Val0->getType()->isPointerTy())
2301 return Error(ID.Loc, "icmp requires pointer or integer operands");
2302 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2304 ID.Kind = ValID::t_Constant;
2308 // Binary Operators.
2310 case lltok::kw_fadd:
2312 case lltok::kw_fsub:
2314 case lltok::kw_fmul:
2315 case lltok::kw_udiv:
2316 case lltok::kw_sdiv:
2317 case lltok::kw_fdiv:
2318 case lltok::kw_urem:
2319 case lltok::kw_srem:
2320 case lltok::kw_frem: {
2324 unsigned Opc = Lex.getUIntVal();
2325 Constant *Val0, *Val1;
2327 LocTy ModifierLoc = Lex.getLoc();
2328 if (Opc == Instruction::Add ||
2329 Opc == Instruction::Sub ||
2330 Opc == Instruction::Mul) {
2331 if (EatIfPresent(lltok::kw_nuw))
2333 if (EatIfPresent(lltok::kw_nsw)) {
2335 if (EatIfPresent(lltok::kw_nuw))
2338 } else if (Opc == Instruction::SDiv) {
2339 if (EatIfPresent(lltok::kw_exact))
2342 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2343 ParseGlobalTypeAndValue(Val0) ||
2344 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2345 ParseGlobalTypeAndValue(Val1) ||
2346 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2348 if (Val0->getType() != Val1->getType())
2349 return Error(ID.Loc, "operands of constexpr must have same type");
2350 if (!Val0->getType()->isIntOrIntVectorTy()) {
2352 return Error(ModifierLoc, "nuw only applies to integer operations");
2354 return Error(ModifierLoc, "nsw only applies to integer operations");
2356 // Check that the type is valid for the operator.
2358 case Instruction::Add:
2359 case Instruction::Sub:
2360 case Instruction::Mul:
2361 case Instruction::UDiv:
2362 case Instruction::SDiv:
2363 case Instruction::URem:
2364 case Instruction::SRem:
2365 if (!Val0->getType()->isIntOrIntVectorTy())
2366 return Error(ID.Loc, "constexpr requires integer operands");
2368 case Instruction::FAdd:
2369 case Instruction::FSub:
2370 case Instruction::FMul:
2371 case Instruction::FDiv:
2372 case Instruction::FRem:
2373 if (!Val0->getType()->isFPOrFPVectorTy())
2374 return Error(ID.Loc, "constexpr requires fp operands");
2376 default: llvm_unreachable("Unknown binary operator!");
2379 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2380 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2381 if (Exact) Flags |= SDivOperator::IsExact;
2382 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2384 ID.Kind = ValID::t_Constant;
2388 // Logical Operations
2390 case lltok::kw_lshr:
2391 case lltok::kw_ashr:
2394 case lltok::kw_xor: {
2395 unsigned Opc = Lex.getUIntVal();
2396 Constant *Val0, *Val1;
2398 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2399 ParseGlobalTypeAndValue(Val0) ||
2400 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2401 ParseGlobalTypeAndValue(Val1) ||
2402 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2404 if (Val0->getType() != Val1->getType())
2405 return Error(ID.Loc, "operands of constexpr must have same type");
2406 if (!Val0->getType()->isIntOrIntVectorTy())
2407 return Error(ID.Loc,
2408 "constexpr requires integer or integer vector operands");
2409 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2410 ID.Kind = ValID::t_Constant;
2414 case lltok::kw_getelementptr:
2415 case lltok::kw_shufflevector:
2416 case lltok::kw_insertelement:
2417 case lltok::kw_extractelement:
2418 case lltok::kw_select: {
2419 unsigned Opc = Lex.getUIntVal();
2420 SmallVector<Constant*, 16> Elts;
2421 bool InBounds = false;
2423 if (Opc == Instruction::GetElementPtr)
2424 InBounds = EatIfPresent(lltok::kw_inbounds);
2425 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2426 ParseGlobalValueVector(Elts) ||
2427 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2430 if (Opc == Instruction::GetElementPtr) {
2431 if (Elts.size() == 0 || !Elts[0]->getType()->isPointerTy())
2432 return Error(ID.Loc, "getelementptr requires pointer operand");
2434 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2435 (Value**)(Elts.data() + 1),
2437 return Error(ID.Loc, "invalid indices for getelementptr");
2438 ID.ConstantVal = InBounds ?
2439 ConstantExpr::getInBoundsGetElementPtr(Elts[0],
2442 ConstantExpr::getGetElementPtr(Elts[0],
2443 Elts.data() + 1, Elts.size() - 1);
2444 } else if (Opc == Instruction::Select) {
2445 if (Elts.size() != 3)
2446 return Error(ID.Loc, "expected three operands to select");
2447 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2449 return Error(ID.Loc, Reason);
2450 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2451 } else if (Opc == Instruction::ShuffleVector) {
2452 if (Elts.size() != 3)
2453 return Error(ID.Loc, "expected three operands to shufflevector");
2454 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2455 return Error(ID.Loc, "invalid operands to shufflevector");
2457 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2458 } else if (Opc == Instruction::ExtractElement) {
2459 if (Elts.size() != 2)
2460 return Error(ID.Loc, "expected two operands to extractelement");
2461 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2462 return Error(ID.Loc, "invalid extractelement operands");
2463 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2465 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2466 if (Elts.size() != 3)
2467 return Error(ID.Loc, "expected three operands to insertelement");
2468 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2469 return Error(ID.Loc, "invalid insertelement operands");
2471 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2474 ID.Kind = ValID::t_Constant;
2483 /// ParseGlobalValue - Parse a global value with the specified type.
2484 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&C) {
2488 bool Parsed = ParseValID(ID) ||
2489 ConvertValIDToValue(Ty, ID, V, NULL);
2490 if (V && !(C = dyn_cast<Constant>(V)))
2491 return Error(ID.Loc, "global values must be constants");
2495 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2496 PATypeHolder Type(Type::getVoidTy(Context));
2497 return ParseType(Type) ||
2498 ParseGlobalValue(Type, V);
2501 /// ParseGlobalValueVector
2503 /// ::= TypeAndValue (',' TypeAndValue)*
2504 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2506 if (Lex.getKind() == lltok::rbrace ||
2507 Lex.getKind() == lltok::rsquare ||
2508 Lex.getKind() == lltok::greater ||
2509 Lex.getKind() == lltok::rparen)
2513 if (ParseGlobalTypeAndValue(C)) return true;
2516 while (EatIfPresent(lltok::comma)) {
2517 if (ParseGlobalTypeAndValue(C)) return true;
2525 //===----------------------------------------------------------------------===//
2526 // Function Parsing.
2527 //===----------------------------------------------------------------------===//
2529 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2530 PerFunctionState *PFS) {
2531 if (Ty->isFunctionTy())
2532 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2535 default: llvm_unreachable("Unknown ValID!");
2536 case ValID::t_LocalID:
2537 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2538 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2540 case ValID::t_LocalName:
2541 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2542 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2544 case ValID::t_InlineAsm: {
2545 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2546 const FunctionType *FTy =
2547 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2548 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2549 return Error(ID.Loc, "invalid type for inline asm constraint string");
2550 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2553 case ValID::t_MDNode:
2554 if (!Ty->isMetadataTy())
2555 return Error(ID.Loc, "metadata value must have metadata type");
2558 case ValID::t_MDString:
2559 if (!Ty->isMetadataTy())
2560 return Error(ID.Loc, "metadata value must have metadata type");
2563 case ValID::t_GlobalName:
2564 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2566 case ValID::t_GlobalID:
2567 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2569 case ValID::t_APSInt:
2570 if (!Ty->isIntegerTy())
2571 return Error(ID.Loc, "integer constant must have integer type");
2572 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2573 V = ConstantInt::get(Context, ID.APSIntVal);
2575 case ValID::t_APFloat:
2576 if (!Ty->isFloatingPointTy() ||
2577 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2578 return Error(ID.Loc, "floating point constant invalid for type");
2580 // The lexer has no type info, so builds all float and double FP constants
2581 // as double. Fix this here. Long double does not need this.
2582 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2585 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2588 V = ConstantFP::get(Context, ID.APFloatVal);
2590 if (V->getType() != Ty)
2591 return Error(ID.Loc, "floating point constant does not have type '" +
2592 Ty->getDescription() + "'");
2596 if (!Ty->isPointerTy())
2597 return Error(ID.Loc, "null must be a pointer type");
2598 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2600 case ValID::t_Undef:
2601 // FIXME: LabelTy should not be a first-class type.
2602 if ((!Ty->isFirstClassType() || Ty->isLabelTy()) &&
2604 return Error(ID.Loc, "invalid type for undef constant");
2605 V = UndefValue::get(Ty);
2607 case ValID::t_EmptyArray:
2608 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2609 return Error(ID.Loc, "invalid empty array initializer");
2610 V = UndefValue::get(Ty);
2613 // FIXME: LabelTy should not be a first-class type.
2614 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2615 return Error(ID.Loc, "invalid type for null constant");
2616 V = Constant::getNullValue(Ty);
2618 case ValID::t_Constant:
2619 if (ID.ConstantVal->getType() != Ty) {
2620 // Allow a constant struct with a single member to be converted
2621 // to a union, if the union has a member which is the same type
2622 // as the struct member.
2623 if (const UnionType* utype = dyn_cast<UnionType>(Ty)) {
2624 return ParseUnionValue(utype, ID, V);
2627 return Error(ID.Loc, "constant expression type mismatch");
2635 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2638 return ParseValID(ID, &PFS) ||
2639 ConvertValIDToValue(Ty, ID, V, &PFS);
2642 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2643 PATypeHolder T(Type::getVoidTy(Context));
2644 return ParseType(T) ||
2645 ParseValue(T, V, PFS);
2648 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2649 PerFunctionState &PFS) {
2652 if (ParseTypeAndValue(V, PFS)) return true;
2653 if (!isa<BasicBlock>(V))
2654 return Error(Loc, "expected a basic block");
2655 BB = cast<BasicBlock>(V);
2659 bool LLParser::ParseUnionValue(const UnionType* utype, ValID &ID, Value *&V) {
2660 if (const StructType* stype = dyn_cast<StructType>(ID.ConstantVal->getType())) {
2661 if (stype->getNumContainedTypes() != 1)
2662 return Error(ID.Loc, "constant expression type mismatch");
2663 int index = utype->getElementTypeIndex(stype->getContainedType(0));
2665 return Error(ID.Loc, "initializer type is not a member of the union");
2667 V = ConstantUnion::get(
2668 utype, cast<Constant>(ID.ConstantVal->getOperand(0)));
2672 return Error(ID.Loc, "constant expression type mismatch");
2677 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2678 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2679 /// OptionalAlign OptGC
2680 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2681 // Parse the linkage.
2682 LocTy LinkageLoc = Lex.getLoc();
2685 unsigned Visibility, RetAttrs;
2687 PATypeHolder RetType(Type::getVoidTy(Context));
2688 LocTy RetTypeLoc = Lex.getLoc();
2689 if (ParseOptionalLinkage(Linkage) ||
2690 ParseOptionalVisibility(Visibility) ||
2691 ParseOptionalCallingConv(CC) ||
2692 ParseOptionalAttrs(RetAttrs, 1) ||
2693 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2696 // Verify that the linkage is ok.
2697 switch ((GlobalValue::LinkageTypes)Linkage) {
2698 case GlobalValue::ExternalLinkage:
2699 break; // always ok.
2700 case GlobalValue::DLLImportLinkage:
2701 case GlobalValue::ExternalWeakLinkage:
2703 return Error(LinkageLoc, "invalid linkage for function definition");
2705 case GlobalValue::PrivateLinkage:
2706 case GlobalValue::LinkerPrivateLinkage:
2707 case GlobalValue::InternalLinkage:
2708 case GlobalValue::AvailableExternallyLinkage:
2709 case GlobalValue::LinkOnceAnyLinkage:
2710 case GlobalValue::LinkOnceODRLinkage:
2711 case GlobalValue::WeakAnyLinkage:
2712 case GlobalValue::WeakODRLinkage:
2713 case GlobalValue::DLLExportLinkage:
2715 return Error(LinkageLoc, "invalid linkage for function declaration");
2717 case GlobalValue::AppendingLinkage:
2718 case GlobalValue::CommonLinkage:
2719 return Error(LinkageLoc, "invalid function linkage type");
2722 if (!FunctionType::isValidReturnType(RetType) ||
2723 RetType->isOpaqueTy())
2724 return Error(RetTypeLoc, "invalid function return type");
2726 LocTy NameLoc = Lex.getLoc();
2728 std::string FunctionName;
2729 if (Lex.getKind() == lltok::GlobalVar) {
2730 FunctionName = Lex.getStrVal();
2731 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2732 unsigned NameID = Lex.getUIntVal();
2734 if (NameID != NumberedVals.size())
2735 return TokError("function expected to be numbered '%" +
2736 utostr(NumberedVals.size()) + "'");
2738 return TokError("expected function name");
2743 if (Lex.getKind() != lltok::lparen)
2744 return TokError("expected '(' in function argument list");
2746 std::vector<ArgInfo> ArgList;
2749 std::string Section;
2753 if (ParseArgumentList(ArgList, isVarArg, false) ||
2754 ParseOptionalAttrs(FuncAttrs, 2) ||
2755 (EatIfPresent(lltok::kw_section) &&
2756 ParseStringConstant(Section)) ||
2757 ParseOptionalAlignment(Alignment) ||
2758 (EatIfPresent(lltok::kw_gc) &&
2759 ParseStringConstant(GC)))
2762 // If the alignment was parsed as an attribute, move to the alignment field.
2763 if (FuncAttrs & Attribute::Alignment) {
2764 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2765 FuncAttrs &= ~Attribute::Alignment;
2768 // Okay, if we got here, the function is syntactically valid. Convert types
2769 // and do semantic checks.
2770 std::vector<const Type*> ParamTypeList;
2771 SmallVector<AttributeWithIndex, 8> Attrs;
2772 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2774 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2775 if (FuncAttrs & ObsoleteFuncAttrs) {
2776 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2777 FuncAttrs &= ~ObsoleteFuncAttrs;
2780 if (RetAttrs != Attribute::None)
2781 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2783 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2784 ParamTypeList.push_back(ArgList[i].Type);
2785 if (ArgList[i].Attrs != Attribute::None)
2786 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2789 if (FuncAttrs != Attribute::None)
2790 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2792 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2794 if (PAL.paramHasAttr(1, Attribute::StructRet) && !RetType->isVoidTy())
2795 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2797 const FunctionType *FT =
2798 FunctionType::get(RetType, ParamTypeList, isVarArg);
2799 const PointerType *PFT = PointerType::getUnqual(FT);
2802 if (!FunctionName.empty()) {
2803 // If this was a definition of a forward reference, remove the definition
2804 // from the forward reference table and fill in the forward ref.
2805 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2806 ForwardRefVals.find(FunctionName);
2807 if (FRVI != ForwardRefVals.end()) {
2808 Fn = M->getFunction(FunctionName);
2809 if (Fn->getType() != PFT)
2810 return Error(FRVI->second.second, "invalid forward reference to "
2811 "function '" + FunctionName + "' with wrong type!");
2813 ForwardRefVals.erase(FRVI);
2814 } else if ((Fn = M->getFunction(FunctionName))) {
2815 // If this function already exists in the symbol table, then it is
2816 // multiply defined. We accept a few cases for old backwards compat.
2817 // FIXME: Remove this stuff for LLVM 3.0.
2818 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2819 (!Fn->isDeclaration() && isDefine)) {
2820 // If the redefinition has different type or different attributes,
2821 // reject it. If both have bodies, reject it.
2822 return Error(NameLoc, "invalid redefinition of function '" +
2823 FunctionName + "'");
2824 } else if (Fn->isDeclaration()) {
2825 // Make sure to strip off any argument names so we can't get conflicts.
2826 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2830 } else if (M->getNamedValue(FunctionName)) {
2831 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2835 // If this is a definition of a forward referenced function, make sure the
2837 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2838 = ForwardRefValIDs.find(NumberedVals.size());
2839 if (I != ForwardRefValIDs.end()) {
2840 Fn = cast<Function>(I->second.first);
2841 if (Fn->getType() != PFT)
2842 return Error(NameLoc, "type of definition and forward reference of '@" +
2843 utostr(NumberedVals.size()) +"' disagree");
2844 ForwardRefValIDs.erase(I);
2849 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2850 else // Move the forward-reference to the correct spot in the module.
2851 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2853 if (FunctionName.empty())
2854 NumberedVals.push_back(Fn);
2856 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2857 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2858 Fn->setCallingConv(CC);
2859 Fn->setAttributes(PAL);
2860 Fn->setAlignment(Alignment);
2861 Fn->setSection(Section);
2862 if (!GC.empty()) Fn->setGC(GC.c_str());
2864 // Add all of the arguments we parsed to the function.
2865 Function::arg_iterator ArgIt = Fn->arg_begin();
2866 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2867 // If we run out of arguments in the Function prototype, exit early.
2868 // FIXME: REMOVE THIS IN LLVM 3.0, this is just for the mismatch case above.
2869 if (ArgIt == Fn->arg_end()) break;
2871 // If the argument has a name, insert it into the argument symbol table.
2872 if (ArgList[i].Name.empty()) continue;
2874 // Set the name, if it conflicted, it will be auto-renamed.
2875 ArgIt->setName(ArgList[i].Name);
2877 if (ArgIt->getNameStr() != ArgList[i].Name)
2878 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2879 ArgList[i].Name + "'");
2886 /// ParseFunctionBody
2887 /// ::= '{' BasicBlock+ '}'
2888 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2890 bool LLParser::ParseFunctionBody(Function &Fn) {
2891 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2892 return TokError("expected '{' in function body");
2893 Lex.Lex(); // eat the {.
2895 int FunctionNumber = -1;
2896 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2898 PerFunctionState PFS(*this, Fn, FunctionNumber);
2900 // We need at least one basic block.
2901 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_end)
2902 return TokError("function body requires at least one basic block");
2904 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2905 if (ParseBasicBlock(PFS)) return true;
2910 // Verify function is ok.
2911 return PFS.FinishFunction();
2915 /// ::= LabelStr? Instruction*
2916 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2917 // If this basic block starts out with a name, remember it.
2919 LocTy NameLoc = Lex.getLoc();
2920 if (Lex.getKind() == lltok::LabelStr) {
2921 Name = Lex.getStrVal();
2925 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2926 if (BB == 0) return true;
2928 std::string NameStr;
2930 // Parse the instructions in this block until we get a terminator.
2932 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2934 // This instruction may have three possibilities for a name: a) none
2935 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2936 LocTy NameLoc = Lex.getLoc();
2940 if (Lex.getKind() == lltok::LocalVarID) {
2941 NameID = Lex.getUIntVal();
2943 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2945 } else if (Lex.getKind() == lltok::LocalVar ||
2946 // FIXME: REMOVE IN LLVM 3.0
2947 Lex.getKind() == lltok::StringConstant) {
2948 NameStr = Lex.getStrVal();
2950 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2954 switch (ParseInstruction(Inst, BB, PFS)) {
2955 default: assert(0 && "Unknown ParseInstruction result!");
2956 case InstError: return true;
2958 BB->getInstList().push_back(Inst);
2960 // With a normal result, we check to see if the instruction is followed by
2961 // a comma and metadata.
2962 if (EatIfPresent(lltok::comma))
2963 if (ParseInstructionMetadata(Inst))
2966 case InstExtraComma:
2967 BB->getInstList().push_back(Inst);
2969 // If the instruction parser ate an extra comma at the end of it, it
2970 // *must* be followed by metadata.
2971 if (ParseInstructionMetadata(Inst))
2976 // Set the name on the instruction.
2977 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2978 } while (!isa<TerminatorInst>(Inst));
2983 //===----------------------------------------------------------------------===//
2984 // Instruction Parsing.
2985 //===----------------------------------------------------------------------===//
2987 /// ParseInstruction - Parse one of the many different instructions.
2989 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2990 PerFunctionState &PFS) {
2991 lltok::Kind Token = Lex.getKind();
2992 if (Token == lltok::Eof)
2993 return TokError("found end of file when expecting more instructions");
2994 LocTy Loc = Lex.getLoc();
2995 unsigned KeywordVal = Lex.getUIntVal();
2996 Lex.Lex(); // Eat the keyword.
2999 default: return Error(Loc, "expected instruction opcode");
3000 // Terminator Instructions.
3001 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
3002 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3003 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3004 case lltok::kw_br: return ParseBr(Inst, PFS);
3005 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3006 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3007 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3008 // Binary Operators.
3011 case lltok::kw_mul: {
3014 LocTy ModifierLoc = Lex.getLoc();
3015 if (EatIfPresent(lltok::kw_nuw))
3017 if (EatIfPresent(lltok::kw_nsw)) {
3019 if (EatIfPresent(lltok::kw_nuw))
3022 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3024 if (!Inst->getType()->isIntOrIntVectorTy()) {
3026 return Error(ModifierLoc, "nuw only applies to integer operations");
3028 return Error(ModifierLoc, "nsw only applies to integer operations");
3031 cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3033 cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3037 case lltok::kw_fadd:
3038 case lltok::kw_fsub:
3039 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3041 case lltok::kw_sdiv: {
3043 if (EatIfPresent(lltok::kw_exact))
3045 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3048 cast<BinaryOperator>(Inst)->setIsExact(true);
3052 case lltok::kw_udiv:
3053 case lltok::kw_urem:
3054 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3055 case lltok::kw_fdiv:
3056 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3058 case lltok::kw_lshr:
3059 case lltok::kw_ashr:
3062 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3063 case lltok::kw_icmp:
3064 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3066 case lltok::kw_trunc:
3067 case lltok::kw_zext:
3068 case lltok::kw_sext:
3069 case lltok::kw_fptrunc:
3070 case lltok::kw_fpext:
3071 case lltok::kw_bitcast:
3072 case lltok::kw_uitofp:
3073 case lltok::kw_sitofp:
3074 case lltok::kw_fptoui:
3075 case lltok::kw_fptosi:
3076 case lltok::kw_inttoptr:
3077 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3079 case lltok::kw_select: return ParseSelect(Inst, PFS);
3080 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3081 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3082 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3083 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3084 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3085 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3086 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3088 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3089 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, BB, false);
3090 case lltok::kw_free: return ParseFree(Inst, PFS, BB);
3091 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
3092 case lltok::kw_store: return ParseStore(Inst, PFS, false);
3093 case lltok::kw_volatile:
3094 if (EatIfPresent(lltok::kw_load))
3095 return ParseLoad(Inst, PFS, true);
3096 else if (EatIfPresent(lltok::kw_store))
3097 return ParseStore(Inst, PFS, true);
3099 return TokError("expected 'load' or 'store'");
3100 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
3101 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3102 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3103 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3107 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3108 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3109 if (Opc == Instruction::FCmp) {
3110 switch (Lex.getKind()) {
3111 default: TokError("expected fcmp predicate (e.g. 'oeq')");
3112 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3113 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3114 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3115 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3116 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3117 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3118 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3119 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3120 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3121 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3122 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3123 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3124 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3125 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3126 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3127 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3130 switch (Lex.getKind()) {
3131 default: TokError("expected icmp predicate (e.g. 'eq')");
3132 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3133 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3134 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3135 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3136 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3137 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3138 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3139 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3140 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3141 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3148 //===----------------------------------------------------------------------===//
3149 // Terminator Instructions.
3150 //===----------------------------------------------------------------------===//
3152 /// ParseRet - Parse a return instruction.
3153 /// ::= 'ret' void (',' !dbg, !1)*
3154 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3155 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ (',' !dbg, !1)*
3156 /// [[obsolete: LLVM 3.0]]
3157 int LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3158 PerFunctionState &PFS) {
3159 PATypeHolder Ty(Type::getVoidTy(Context));
3160 if (ParseType(Ty, true /*void allowed*/)) return true;
3162 if (Ty->isVoidTy()) {
3163 Inst = ReturnInst::Create(Context);
3168 if (ParseValue(Ty, RV, PFS)) return true;
3170 bool ExtraComma = false;
3171 if (EatIfPresent(lltok::comma)) {
3172 // Parse optional custom metadata, e.g. !dbg
3173 if (Lex.getKind() == lltok::MetadataVar) {
3176 // The normal case is one return value.
3177 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring
3178 // use of 'ret {i32,i32} {i32 1, i32 2}'
3179 SmallVector<Value*, 8> RVs;
3183 // If optional custom metadata, e.g. !dbg is seen then this is the
3185 if (Lex.getKind() == lltok::MetadataVar)
3187 if (ParseTypeAndValue(RV, PFS)) return true;
3189 } while (EatIfPresent(lltok::comma));
3191 RV = UndefValue::get(PFS.getFunction().getReturnType());
3192 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
3193 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
3194 BB->getInstList().push_back(I);
3200 Inst = ReturnInst::Create(Context, RV);
3201 return ExtraComma ? InstExtraComma : InstNormal;
3206 /// ::= 'br' TypeAndValue
3207 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3208 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3211 BasicBlock *Op1, *Op2;
3212 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3214 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3215 Inst = BranchInst::Create(BB);
3219 if (Op0->getType() != Type::getInt1Ty(Context))
3220 return Error(Loc, "branch condition must have 'i1' type");
3222 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3223 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3224 ParseToken(lltok::comma, "expected ',' after true destination") ||
3225 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3228 Inst = BranchInst::Create(Op1, Op2, Op0);
3234 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3236 /// ::= (TypeAndValue ',' TypeAndValue)*
3237 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3238 LocTy CondLoc, BBLoc;
3240 BasicBlock *DefaultBB;
3241 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3242 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3243 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3244 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3247 if (!Cond->getType()->isIntegerTy())
3248 return Error(CondLoc, "switch condition must have integer type");
3250 // Parse the jump table pairs.
3251 SmallPtrSet<Value*, 32> SeenCases;
3252 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3253 while (Lex.getKind() != lltok::rsquare) {
3257 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3258 ParseToken(lltok::comma, "expected ',' after case value") ||
3259 ParseTypeAndBasicBlock(DestBB, PFS))
3262 if (!SeenCases.insert(Constant))
3263 return Error(CondLoc, "duplicate case value in switch");
3264 if (!isa<ConstantInt>(Constant))
3265 return Error(CondLoc, "case value is not a constant integer");
3267 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3270 Lex.Lex(); // Eat the ']'.
3272 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3273 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3274 SI->addCase(Table[i].first, Table[i].second);
3281 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3282 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3285 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3286 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3287 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3290 if (!Address->getType()->isPointerTy())
3291 return Error(AddrLoc, "indirectbr address must have pointer type");
3293 // Parse the destination list.
3294 SmallVector<BasicBlock*, 16> DestList;
3296 if (Lex.getKind() != lltok::rsquare) {
3298 if (ParseTypeAndBasicBlock(DestBB, PFS))
3300 DestList.push_back(DestBB);
3302 while (EatIfPresent(lltok::comma)) {
3303 if (ParseTypeAndBasicBlock(DestBB, PFS))
3305 DestList.push_back(DestBB);
3309 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3312 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3313 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3314 IBI->addDestination(DestList[i]);
3321 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3322 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3323 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3324 LocTy CallLoc = Lex.getLoc();
3325 unsigned RetAttrs, FnAttrs;
3327 PATypeHolder RetType(Type::getVoidTy(Context));
3330 SmallVector<ParamInfo, 16> ArgList;
3332 BasicBlock *NormalBB, *UnwindBB;
3333 if (ParseOptionalCallingConv(CC) ||
3334 ParseOptionalAttrs(RetAttrs, 1) ||
3335 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3336 ParseValID(CalleeID) ||
3337 ParseParameterList(ArgList, PFS) ||
3338 ParseOptionalAttrs(FnAttrs, 2) ||
3339 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3340 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3341 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3342 ParseTypeAndBasicBlock(UnwindBB, PFS))
3345 // If RetType is a non-function pointer type, then this is the short syntax
3346 // for the call, which means that RetType is just the return type. Infer the
3347 // rest of the function argument types from the arguments that are present.
3348 const PointerType *PFTy = 0;
3349 const FunctionType *Ty = 0;
3350 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3351 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3352 // Pull out the types of all of the arguments...
3353 std::vector<const Type*> ParamTypes;
3354 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3355 ParamTypes.push_back(ArgList[i].V->getType());
3357 if (!FunctionType::isValidReturnType(RetType))
3358 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3360 Ty = FunctionType::get(RetType, ParamTypes, false);
3361 PFTy = PointerType::getUnqual(Ty);
3364 // Look up the callee.
3366 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3368 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3369 // function attributes.
3370 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3371 if (FnAttrs & ObsoleteFuncAttrs) {
3372 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3373 FnAttrs &= ~ObsoleteFuncAttrs;
3376 // Set up the Attributes for the function.
3377 SmallVector<AttributeWithIndex, 8> Attrs;
3378 if (RetAttrs != Attribute::None)
3379 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3381 SmallVector<Value*, 8> Args;
3383 // Loop through FunctionType's arguments and ensure they are specified
3384 // correctly. Also, gather any parameter attributes.
3385 FunctionType::param_iterator I = Ty->param_begin();
3386 FunctionType::param_iterator E = Ty->param_end();
3387 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3388 const Type *ExpectedTy = 0;
3391 } else if (!Ty->isVarArg()) {
3392 return Error(ArgList[i].Loc, "too many arguments specified");
3395 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3396 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3397 ExpectedTy->getDescription() + "'");
3398 Args.push_back(ArgList[i].V);
3399 if (ArgList[i].Attrs != Attribute::None)
3400 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3404 return Error(CallLoc, "not enough parameters specified for call");
3406 if (FnAttrs != Attribute::None)
3407 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3409 // Finish off the Attributes and check them
3410 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3412 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB,
3413 Args.begin(), Args.end());
3414 II->setCallingConv(CC);
3415 II->setAttributes(PAL);
3422 //===----------------------------------------------------------------------===//
3423 // Binary Operators.
3424 //===----------------------------------------------------------------------===//
3427 /// ::= ArithmeticOps TypeAndValue ',' Value
3429 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3430 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3431 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3432 unsigned Opc, unsigned OperandType) {
3433 LocTy Loc; Value *LHS, *RHS;
3434 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3435 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3436 ParseValue(LHS->getType(), RHS, PFS))
3440 switch (OperandType) {
3441 default: llvm_unreachable("Unknown operand type!");
3442 case 0: // int or FP.
3443 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3444 LHS->getType()->isFPOrFPVectorTy();
3446 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3447 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3451 return Error(Loc, "invalid operand type for instruction");
3453 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3458 /// ::= ArithmeticOps TypeAndValue ',' Value {
3459 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3461 LocTy Loc; Value *LHS, *RHS;
3462 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3463 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3464 ParseValue(LHS->getType(), RHS, PFS))
3467 if (!LHS->getType()->isIntOrIntVectorTy())
3468 return Error(Loc,"instruction requires integer or integer vector operands");
3470 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3476 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3477 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3478 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3480 // Parse the integer/fp comparison predicate.
3484 if (ParseCmpPredicate(Pred, Opc) ||
3485 ParseTypeAndValue(LHS, Loc, PFS) ||
3486 ParseToken(lltok::comma, "expected ',' after compare value") ||
3487 ParseValue(LHS->getType(), RHS, PFS))
3490 if (Opc == Instruction::FCmp) {
3491 if (!LHS->getType()->isFPOrFPVectorTy())
3492 return Error(Loc, "fcmp requires floating point operands");
3493 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3495 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3496 if (!LHS->getType()->isIntOrIntVectorTy() &&
3497 !LHS->getType()->isPointerTy())
3498 return Error(Loc, "icmp requires integer operands");
3499 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3504 //===----------------------------------------------------------------------===//
3505 // Other Instructions.
3506 //===----------------------------------------------------------------------===//
3510 /// ::= CastOpc TypeAndValue 'to' Type
3511 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3513 LocTy Loc; Value *Op;
3514 PATypeHolder DestTy(Type::getVoidTy(Context));
3515 if (ParseTypeAndValue(Op, Loc, PFS) ||
3516 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3520 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3521 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3522 return Error(Loc, "invalid cast opcode for cast from '" +
3523 Op->getType()->getDescription() + "' to '" +
3524 DestTy->getDescription() + "'");
3526 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3531 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3532 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3534 Value *Op0, *Op1, *Op2;
3535 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3536 ParseToken(lltok::comma, "expected ',' after select condition") ||
3537 ParseTypeAndValue(Op1, PFS) ||
3538 ParseToken(lltok::comma, "expected ',' after select value") ||
3539 ParseTypeAndValue(Op2, PFS))
3542 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3543 return Error(Loc, Reason);
3545 Inst = SelectInst::Create(Op0, Op1, Op2);
3550 /// ::= 'va_arg' TypeAndValue ',' Type
3551 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3553 PATypeHolder EltTy(Type::getVoidTy(Context));
3555 if (ParseTypeAndValue(Op, PFS) ||
3556 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3557 ParseType(EltTy, TypeLoc))
3560 if (!EltTy->isFirstClassType())
3561 return Error(TypeLoc, "va_arg requires operand with first class type");
3563 Inst = new VAArgInst(Op, EltTy);
3567 /// ParseExtractElement
3568 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3569 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3572 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3573 ParseToken(lltok::comma, "expected ',' after extract value") ||
3574 ParseTypeAndValue(Op1, PFS))
3577 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3578 return Error(Loc, "invalid extractelement operands");
3580 Inst = ExtractElementInst::Create(Op0, Op1);
3584 /// ParseInsertElement
3585 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3586 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3588 Value *Op0, *Op1, *Op2;
3589 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3590 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3591 ParseTypeAndValue(Op1, PFS) ||
3592 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3593 ParseTypeAndValue(Op2, PFS))
3596 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3597 return Error(Loc, "invalid insertelement operands");
3599 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3603 /// ParseShuffleVector
3604 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3605 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3607 Value *Op0, *Op1, *Op2;
3608 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3609 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3610 ParseTypeAndValue(Op1, PFS) ||
3611 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3612 ParseTypeAndValue(Op2, PFS))
3615 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3616 return Error(Loc, "invalid extractelement operands");
3618 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3623 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3624 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3625 PATypeHolder Ty(Type::getVoidTy(Context));
3627 LocTy TypeLoc = Lex.getLoc();
3629 if (ParseType(Ty) ||
3630 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3631 ParseValue(Ty, Op0, PFS) ||
3632 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3633 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3634 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3637 bool AteExtraComma = false;
3638 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3640 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3642 if (!EatIfPresent(lltok::comma))
3645 if (Lex.getKind() == lltok::MetadataVar) {
3646 AteExtraComma = true;
3650 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3651 ParseValue(Ty, Op0, PFS) ||
3652 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3653 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3654 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3658 if (!Ty->isFirstClassType())
3659 return Error(TypeLoc, "phi node must have first class type");
3661 PHINode *PN = PHINode::Create(Ty);
3662 PN->reserveOperandSpace(PHIVals.size());
3663 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3664 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3666 return AteExtraComma ? InstExtraComma : InstNormal;
3670 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3671 /// ParameterList OptionalAttrs
3672 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3674 unsigned RetAttrs, FnAttrs;
3676 PATypeHolder RetType(Type::getVoidTy(Context));
3679 SmallVector<ParamInfo, 16> ArgList;
3680 LocTy CallLoc = Lex.getLoc();
3682 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3683 ParseOptionalCallingConv(CC) ||
3684 ParseOptionalAttrs(RetAttrs, 1) ||
3685 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3686 ParseValID(CalleeID) ||
3687 ParseParameterList(ArgList, PFS) ||
3688 ParseOptionalAttrs(FnAttrs, 2))
3691 // If RetType is a non-function pointer type, then this is the short syntax
3692 // for the call, which means that RetType is just the return type. Infer the
3693 // rest of the function argument types from the arguments that are present.
3694 const PointerType *PFTy = 0;
3695 const FunctionType *Ty = 0;
3696 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3697 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3698 // Pull out the types of all of the arguments...
3699 std::vector<const Type*> ParamTypes;
3700 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3701 ParamTypes.push_back(ArgList[i].V->getType());
3703 if (!FunctionType::isValidReturnType(RetType))
3704 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3706 Ty = FunctionType::get(RetType, ParamTypes, false);
3707 PFTy = PointerType::getUnqual(Ty);
3710 // Look up the callee.
3712 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3714 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3715 // function attributes.
3716 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3717 if (FnAttrs & ObsoleteFuncAttrs) {
3718 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3719 FnAttrs &= ~ObsoleteFuncAttrs;
3722 // Set up the Attributes for the function.
3723 SmallVector<AttributeWithIndex, 8> Attrs;
3724 if (RetAttrs != Attribute::None)
3725 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3727 SmallVector<Value*, 8> Args;
3729 // Loop through FunctionType's arguments and ensure they are specified
3730 // correctly. Also, gather any parameter attributes.
3731 FunctionType::param_iterator I = Ty->param_begin();
3732 FunctionType::param_iterator E = Ty->param_end();
3733 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3734 const Type *ExpectedTy = 0;
3737 } else if (!Ty->isVarArg()) {
3738 return Error(ArgList[i].Loc, "too many arguments specified");
3741 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3742 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3743 ExpectedTy->getDescription() + "'");
3744 Args.push_back(ArgList[i].V);
3745 if (ArgList[i].Attrs != Attribute::None)
3746 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3750 return Error(CallLoc, "not enough parameters specified for call");
3752 if (FnAttrs != Attribute::None)
3753 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3755 // Finish off the Attributes and check them
3756 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3758 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3759 CI->setTailCall(isTail);
3760 CI->setCallingConv(CC);
3761 CI->setAttributes(PAL);
3766 //===----------------------------------------------------------------------===//
3767 // Memory Instructions.
3768 //===----------------------------------------------------------------------===//
3771 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalInfo)?
3772 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3773 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3774 BasicBlock* BB, bool isAlloca) {
3775 PATypeHolder Ty(Type::getVoidTy(Context));
3778 unsigned Alignment = 0;
3779 if (ParseType(Ty)) return true;
3781 bool AteExtraComma = false;
3782 if (EatIfPresent(lltok::comma)) {
3783 if (Lex.getKind() == lltok::kw_align) {
3784 if (ParseOptionalAlignment(Alignment)) return true;
3785 } else if (Lex.getKind() == lltok::MetadataVar) {
3786 AteExtraComma = true;
3788 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3789 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3794 if (Size && !Size->getType()->isIntegerTy(32))
3795 return Error(SizeLoc, "element count must be i32");
3798 Inst = new AllocaInst(Ty, Size, Alignment);
3799 return AteExtraComma ? InstExtraComma : InstNormal;
3802 // Autoupgrade old malloc instruction to malloc call.
3803 // FIXME: Remove in LLVM 3.0.
3804 const Type *IntPtrTy = Type::getInt32Ty(Context);
3805 Constant *AllocSize = ConstantExpr::getSizeOf(Ty);
3806 AllocSize = ConstantExpr::getTruncOrBitCast(AllocSize, IntPtrTy);
3808 // Prototype malloc as "void *(int32)".
3809 // This function is renamed as "malloc" in ValidateEndOfModule().
3810 MallocF = cast<Function>(
3811 M->getOrInsertFunction("", Type::getInt8PtrTy(Context), IntPtrTy, NULL));
3812 Inst = CallInst::CreateMalloc(BB, IntPtrTy, Ty, AllocSize, Size, MallocF);
3813 return AteExtraComma ? InstExtraComma : InstNormal;
3817 /// ::= 'free' TypeAndValue
3818 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS,
3820 Value *Val; LocTy Loc;
3821 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3822 if (!Val->getType()->isPointerTy())
3823 return Error(Loc, "operand to free must be a pointer");
3824 Inst = CallInst::CreateFree(Val, BB);
3829 /// ::= 'volatile'? 'load' TypeAndValue (',' OptionalInfo)?
3830 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3832 Value *Val; LocTy Loc;
3833 unsigned Alignment = 0;
3834 bool AteExtraComma = false;
3835 if (ParseTypeAndValue(Val, Loc, PFS) ||
3836 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3839 if (!Val->getType()->isPointerTy() ||
3840 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3841 return Error(Loc, "load operand must be a pointer to a first class type");
3843 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3844 return AteExtraComma ? InstExtraComma : InstNormal;
3848 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3849 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3851 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3852 unsigned Alignment = 0;
3853 bool AteExtraComma = false;
3854 if (ParseTypeAndValue(Val, Loc, PFS) ||
3855 ParseToken(lltok::comma, "expected ',' after store operand") ||
3856 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3857 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3860 if (!Ptr->getType()->isPointerTy())
3861 return Error(PtrLoc, "store operand must be a pointer");
3862 if (!Val->getType()->isFirstClassType())
3863 return Error(Loc, "store operand must be a first class value");
3864 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3865 return Error(Loc, "stored value and pointer type do not match");
3867 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3868 return AteExtraComma ? InstExtraComma : InstNormal;
3872 /// ::= 'getresult' TypeAndValue ',' i32
3873 /// FIXME: Remove support for getresult in LLVM 3.0
3874 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3875 Value *Val; LocTy ValLoc, EltLoc;
3877 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3878 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3879 ParseUInt32(Element, EltLoc))
3882 if (!Val->getType()->isStructTy() && !Val->getType()->isArrayTy())
3883 return Error(ValLoc, "getresult inst requires an aggregate operand");
3884 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3885 return Error(EltLoc, "invalid getresult index for value");
3886 Inst = ExtractValueInst::Create(Val, Element);
3890 /// ParseGetElementPtr
3891 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3892 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3893 Value *Ptr, *Val; LocTy Loc, EltLoc;
3895 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3897 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3899 if (!Ptr->getType()->isPointerTy())
3900 return Error(Loc, "base of getelementptr must be a pointer");
3902 SmallVector<Value*, 16> Indices;
3903 bool AteExtraComma = false;
3904 while (EatIfPresent(lltok::comma)) {
3905 if (Lex.getKind() == lltok::MetadataVar) {
3906 AteExtraComma = true;
3909 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3910 if (!Val->getType()->isIntegerTy())
3911 return Error(EltLoc, "getelementptr index must be an integer");
3912 Indices.push_back(Val);
3915 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3916 Indices.begin(), Indices.end()))
3917 return Error(Loc, "invalid getelementptr indices");
3918 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3920 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3921 return AteExtraComma ? InstExtraComma : InstNormal;
3924 /// ParseExtractValue
3925 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3926 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3927 Value *Val; LocTy Loc;
3928 SmallVector<unsigned, 4> Indices;
3930 if (ParseTypeAndValue(Val, Loc, PFS) ||
3931 ParseIndexList(Indices, AteExtraComma))
3934 if (!Val->getType()->isAggregateType())
3935 return Error(Loc, "extractvalue operand must be aggregate type");
3937 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3939 return Error(Loc, "invalid indices for extractvalue");
3940 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3941 return AteExtraComma ? InstExtraComma : InstNormal;
3944 /// ParseInsertValue
3945 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3946 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3947 Value *Val0, *Val1; LocTy Loc0, Loc1;
3948 SmallVector<unsigned, 4> Indices;
3950 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3951 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3952 ParseTypeAndValue(Val1, Loc1, PFS) ||
3953 ParseIndexList(Indices, AteExtraComma))
3956 if (!Val0->getType()->isAggregateType())
3957 return Error(Loc0, "insertvalue operand must be aggregate type");
3959 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3961 return Error(Loc0, "invalid indices for insertvalue");
3962 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3963 return AteExtraComma ? InstExtraComma : InstNormal;
3966 //===----------------------------------------------------------------------===//
3967 // Embedded metadata.
3968 //===----------------------------------------------------------------------===//
3970 /// ParseMDNodeVector
3971 /// ::= Element (',' Element)*
3973 /// ::= 'null' | TypeAndValue
3974 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
3975 PerFunctionState *PFS) {
3977 // Null is a special case since it is typeless.
3978 if (EatIfPresent(lltok::kw_null)) {
3984 PATypeHolder Ty(Type::getVoidTy(Context));
3986 if (ParseType(Ty) || ParseValID(ID, PFS) ||
3987 ConvertValIDToValue(Ty, ID, V, PFS))
3991 } while (EatIfPresent(lltok::comma));