1 //===-- LLParser.cpp - Parser Class ---------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the parser class for .ll files.
12 //===----------------------------------------------------------------------===//
15 #include "llvm/AutoUpgrade.h"
16 #include "llvm/CallingConv.h"
17 #include "llvm/Constants.h"
18 #include "llvm/DerivedTypes.h"
19 #include "llvm/InlineAsm.h"
20 #include "llvm/Instructions.h"
21 #include "llvm/Module.h"
22 #include "llvm/Operator.h"
23 #include "llvm/ValueSymbolTable.h"
24 #include "llvm/ADT/SmallPtrSet.h"
25 #include "llvm/ADT/StringExtras.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/Support/raw_ostream.h"
30 /// Run: module ::= toplevelentity*
31 bool LLParser::Run() {
35 return ParseTopLevelEntities() ||
36 ValidateEndOfModule();
39 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
41 bool LLParser::ValidateEndOfModule() {
42 // Handle any instruction metadata forward references.
43 if (!ForwardRefInstMetadata.empty()) {
44 for (DenseMap<Instruction*, std::vector<MDRef> >::iterator
45 I = ForwardRefInstMetadata.begin(), E = ForwardRefInstMetadata.end();
47 Instruction *Inst = I->first;
48 const std::vector<MDRef> &MDList = I->second;
50 for (unsigned i = 0, e = MDList.size(); i != e; ++i) {
51 unsigned SlotNo = MDList[i].MDSlot;
53 if (SlotNo >= NumberedMetadata.size() || NumberedMetadata[SlotNo] == 0)
54 return Error(MDList[i].Loc, "use of undefined metadata '!" +
55 utostr(SlotNo) + "'");
56 Inst->setMetadata(MDList[i].MDKind, NumberedMetadata[SlotNo]);
59 ForwardRefInstMetadata.clear();
63 // Update auto-upgraded malloc calls to "malloc".
64 // FIXME: Remove in LLVM 3.0.
66 MallocF->setName("malloc");
67 // If setName() does not set the name to "malloc", then there is already a
68 // declaration of "malloc". In that case, iterate over all calls to MallocF
69 // and get them to call the declared "malloc" instead.
70 if (MallocF->getName() != "malloc") {
71 Constant *RealMallocF = M->getFunction("malloc");
72 if (RealMallocF->getType() != MallocF->getType())
73 RealMallocF = ConstantExpr::getBitCast(RealMallocF, MallocF->getType());
74 MallocF->replaceAllUsesWith(RealMallocF);
75 MallocF->eraseFromParent();
81 // If there are entries in ForwardRefBlockAddresses at this point, they are
82 // references after the function was defined. Resolve those now.
83 while (!ForwardRefBlockAddresses.empty()) {
84 // Okay, we are referencing an already-parsed function, resolve them now.
86 const ValID &Fn = ForwardRefBlockAddresses.begin()->first;
87 if (Fn.Kind == ValID::t_GlobalName)
88 TheFn = M->getFunction(Fn.StrVal);
89 else if (Fn.UIntVal < NumberedVals.size())
90 TheFn = dyn_cast<Function>(NumberedVals[Fn.UIntVal]);
93 return Error(Fn.Loc, "unknown function referenced by blockaddress");
95 // Resolve all these references.
96 if (ResolveForwardRefBlockAddresses(TheFn,
97 ForwardRefBlockAddresses.begin()->second,
101 ForwardRefBlockAddresses.erase(ForwardRefBlockAddresses.begin());
105 if (!ForwardRefTypes.empty())
106 return Error(ForwardRefTypes.begin()->second.second,
107 "use of undefined type named '" +
108 ForwardRefTypes.begin()->first + "'");
109 if (!ForwardRefTypeIDs.empty())
110 return Error(ForwardRefTypeIDs.begin()->second.second,
111 "use of undefined type '%" +
112 utostr(ForwardRefTypeIDs.begin()->first) + "'");
114 if (!ForwardRefVals.empty())
115 return Error(ForwardRefVals.begin()->second.second,
116 "use of undefined value '@" + ForwardRefVals.begin()->first +
119 if (!ForwardRefValIDs.empty())
120 return Error(ForwardRefValIDs.begin()->second.second,
121 "use of undefined value '@" +
122 utostr(ForwardRefValIDs.begin()->first) + "'");
124 if (!ForwardRefMDNodes.empty())
125 return Error(ForwardRefMDNodes.begin()->second.second,
126 "use of undefined metadata '!" +
127 utostr(ForwardRefMDNodes.begin()->first) + "'");
130 // Look for intrinsic functions and CallInst that need to be upgraded
131 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
132 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
134 // Check debug info intrinsics.
135 CheckDebugInfoIntrinsics(M);
139 bool LLParser::ResolveForwardRefBlockAddresses(Function *TheFn,
140 std::vector<std::pair<ValID, GlobalValue*> > &Refs,
141 PerFunctionState *PFS) {
142 // Loop over all the references, resolving them.
143 for (unsigned i = 0, e = Refs.size(); i != e; ++i) {
146 if (Refs[i].first.Kind == ValID::t_LocalName)
147 Res = PFS->GetBB(Refs[i].first.StrVal, Refs[i].first.Loc);
149 Res = PFS->GetBB(Refs[i].first.UIntVal, Refs[i].first.Loc);
150 } else if (Refs[i].first.Kind == ValID::t_LocalID) {
151 return Error(Refs[i].first.Loc,
152 "cannot take address of numeric label after the function is defined");
154 Res = dyn_cast_or_null<BasicBlock>(
155 TheFn->getValueSymbolTable().lookup(Refs[i].first.StrVal));
159 return Error(Refs[i].first.Loc,
160 "referenced value is not a basic block");
162 // Get the BlockAddress for this and update references to use it.
163 BlockAddress *BA = BlockAddress::get(TheFn, Res);
164 Refs[i].second->replaceAllUsesWith(BA);
165 Refs[i].second->eraseFromParent();
171 //===----------------------------------------------------------------------===//
172 // Top-Level Entities
173 //===----------------------------------------------------------------------===//
175 bool LLParser::ParseTopLevelEntities() {
177 switch (Lex.getKind()) {
178 default: return TokError("expected top-level entity");
179 case lltok::Eof: return false;
180 //case lltok::kw_define:
181 case lltok::kw_declare: if (ParseDeclare()) return true; break;
182 case lltok::kw_define: if (ParseDefine()) return true; break;
183 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
184 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
185 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
186 case lltok::kw_type: if (ParseUnnamedType()) return true; break;
187 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
188 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
189 case lltok::LocalVar: if (ParseNamedType()) return true; break;
190 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
191 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
192 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
193 case lltok::MetadataVar: if (ParseNamedMetadata()) return true; break;
195 // The Global variable production with no name can have many different
196 // optional leading prefixes, the production is:
197 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
198 // OptionalAddrSpace ('constant'|'global') ...
199 case lltok::kw_private : // OptionalLinkage
200 case lltok::kw_linker_private: // OptionalLinkage
201 case lltok::kw_internal: // OptionalLinkage
202 case lltok::kw_weak: // OptionalLinkage
203 case lltok::kw_weak_odr: // OptionalLinkage
204 case lltok::kw_linkonce: // OptionalLinkage
205 case lltok::kw_linkonce_odr: // OptionalLinkage
206 case lltok::kw_appending: // OptionalLinkage
207 case lltok::kw_dllexport: // OptionalLinkage
208 case lltok::kw_common: // OptionalLinkage
209 case lltok::kw_dllimport: // OptionalLinkage
210 case lltok::kw_extern_weak: // OptionalLinkage
211 case lltok::kw_external: { // OptionalLinkage
212 unsigned Linkage, Visibility;
213 if (ParseOptionalLinkage(Linkage) ||
214 ParseOptionalVisibility(Visibility) ||
215 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
219 case lltok::kw_default: // OptionalVisibility
220 case lltok::kw_hidden: // OptionalVisibility
221 case lltok::kw_protected: { // OptionalVisibility
223 if (ParseOptionalVisibility(Visibility) ||
224 ParseGlobal("", SMLoc(), 0, false, Visibility))
229 case lltok::kw_thread_local: // OptionalThreadLocal
230 case lltok::kw_addrspace: // OptionalAddrSpace
231 case lltok::kw_constant: // GlobalType
232 case lltok::kw_global: // GlobalType
233 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
241 /// ::= 'module' 'asm' STRINGCONSTANT
242 bool LLParser::ParseModuleAsm() {
243 assert(Lex.getKind() == lltok::kw_module);
247 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
248 ParseStringConstant(AsmStr)) return true;
250 const std::string &AsmSoFar = M->getModuleInlineAsm();
251 if (AsmSoFar.empty())
252 M->setModuleInlineAsm(AsmStr);
254 M->setModuleInlineAsm(AsmSoFar+"\n"+AsmStr);
259 /// ::= 'target' 'triple' '=' STRINGCONSTANT
260 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
261 bool LLParser::ParseTargetDefinition() {
262 assert(Lex.getKind() == lltok::kw_target);
265 default: return TokError("unknown target property");
266 case lltok::kw_triple:
268 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
269 ParseStringConstant(Str))
271 M->setTargetTriple(Str);
273 case lltok::kw_datalayout:
275 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
276 ParseStringConstant(Str))
278 M->setDataLayout(Str);
284 /// ::= 'deplibs' '=' '[' ']'
285 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
286 bool LLParser::ParseDepLibs() {
287 assert(Lex.getKind() == lltok::kw_deplibs);
289 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
290 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
293 if (EatIfPresent(lltok::rsquare))
297 if (ParseStringConstant(Str)) return true;
300 while (EatIfPresent(lltok::comma)) {
301 if (ParseStringConstant(Str)) return true;
305 return ParseToken(lltok::rsquare, "expected ']' at end of list");
308 /// ParseUnnamedType:
310 /// ::= LocalVarID '=' 'type' type
311 bool LLParser::ParseUnnamedType() {
312 unsigned TypeID = NumberedTypes.size();
314 // Handle the LocalVarID form.
315 if (Lex.getKind() == lltok::LocalVarID) {
316 if (Lex.getUIntVal() != TypeID)
317 return Error(Lex.getLoc(), "type expected to be numbered '%" +
318 utostr(TypeID) + "'");
319 Lex.Lex(); // eat LocalVarID;
321 if (ParseToken(lltok::equal, "expected '=' after name"))
325 LocTy TypeLoc = Lex.getLoc();
326 if (ParseToken(lltok::kw_type, "expected 'type' after '='")) return true;
328 PATypeHolder Ty(Type::getVoidTy(Context));
329 if (ParseType(Ty)) return true;
331 // See if this type was previously referenced.
332 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
333 FI = ForwardRefTypeIDs.find(TypeID);
334 if (FI != ForwardRefTypeIDs.end()) {
335 if (FI->second.first.get() == Ty)
336 return Error(TypeLoc, "self referential type is invalid");
338 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
339 Ty = FI->second.first.get();
340 ForwardRefTypeIDs.erase(FI);
343 NumberedTypes.push_back(Ty);
349 /// ::= LocalVar '=' 'type' type
350 bool LLParser::ParseNamedType() {
351 std::string Name = Lex.getStrVal();
352 LocTy NameLoc = Lex.getLoc();
353 Lex.Lex(); // eat LocalVar.
355 PATypeHolder Ty(Type::getVoidTy(Context));
357 if (ParseToken(lltok::equal, "expected '=' after name") ||
358 ParseToken(lltok::kw_type, "expected 'type' after name") ||
362 // Set the type name, checking for conflicts as we do so.
363 bool AlreadyExists = M->addTypeName(Name, Ty);
364 if (!AlreadyExists) return false;
366 // See if this type is a forward reference. We need to eagerly resolve
367 // types to allow recursive type redefinitions below.
368 std::map<std::string, std::pair<PATypeHolder, LocTy> >::iterator
369 FI = ForwardRefTypes.find(Name);
370 if (FI != ForwardRefTypes.end()) {
371 if (FI->second.first.get() == Ty)
372 return Error(NameLoc, "self referential type is invalid");
374 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
375 Ty = FI->second.first.get();
376 ForwardRefTypes.erase(FI);
379 // Inserting a name that is already defined, get the existing name.
380 const Type *Existing = M->getTypeByName(Name);
381 assert(Existing && "Conflict but no matching type?!");
383 // Otherwise, this is an attempt to redefine a type. That's okay if
384 // the redefinition is identical to the original.
385 // FIXME: REMOVE REDEFINITIONS IN LLVM 3.0
386 if (Existing == Ty) return false;
388 // Any other kind of (non-equivalent) redefinition is an error.
389 return Error(NameLoc, "redefinition of type named '" + Name + "' of type '" +
390 Ty->getDescription() + "'");
395 /// ::= 'declare' FunctionHeader
396 bool LLParser::ParseDeclare() {
397 assert(Lex.getKind() == lltok::kw_declare);
401 return ParseFunctionHeader(F, false);
405 /// ::= 'define' FunctionHeader '{' ...
406 bool LLParser::ParseDefine() {
407 assert(Lex.getKind() == lltok::kw_define);
411 return ParseFunctionHeader(F, true) ||
412 ParseFunctionBody(*F);
418 bool LLParser::ParseGlobalType(bool &IsConstant) {
419 if (Lex.getKind() == lltok::kw_constant)
421 else if (Lex.getKind() == lltok::kw_global)
425 return TokError("expected 'global' or 'constant'");
431 /// ParseUnnamedGlobal:
432 /// OptionalVisibility ALIAS ...
433 /// OptionalLinkage OptionalVisibility ... -> global variable
434 /// GlobalID '=' OptionalVisibility ALIAS ...
435 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
436 bool LLParser::ParseUnnamedGlobal() {
437 unsigned VarID = NumberedVals.size();
439 LocTy NameLoc = Lex.getLoc();
441 // Handle the GlobalID form.
442 if (Lex.getKind() == lltok::GlobalID) {
443 if (Lex.getUIntVal() != VarID)
444 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
445 utostr(VarID) + "'");
446 Lex.Lex(); // eat GlobalID;
448 if (ParseToken(lltok::equal, "expected '=' after name"))
453 unsigned Linkage, Visibility;
454 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
455 ParseOptionalVisibility(Visibility))
458 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
459 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
460 return ParseAlias(Name, NameLoc, Visibility);
463 /// ParseNamedGlobal:
464 /// GlobalVar '=' OptionalVisibility ALIAS ...
465 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
466 bool LLParser::ParseNamedGlobal() {
467 assert(Lex.getKind() == lltok::GlobalVar);
468 LocTy NameLoc = Lex.getLoc();
469 std::string Name = Lex.getStrVal();
473 unsigned Linkage, Visibility;
474 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
475 ParseOptionalLinkage(Linkage, HasLinkage) ||
476 ParseOptionalVisibility(Visibility))
479 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
480 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
481 return ParseAlias(Name, NameLoc, Visibility);
485 // ::= '!' STRINGCONSTANT
486 bool LLParser::ParseMDString(MDString *&Result) {
488 if (ParseStringConstant(Str)) return true;
489 Result = MDString::get(Context, Str);
494 // ::= '!' MDNodeNumber
496 /// This version of ParseMDNodeID returns the slot number and null in the case
497 /// of a forward reference.
498 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
499 // !{ ..., !42, ... }
500 if (ParseUInt32(SlotNo)) return true;
502 // Check existing MDNode.
503 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != 0)
504 Result = NumberedMetadata[SlotNo];
510 bool LLParser::ParseMDNodeID(MDNode *&Result) {
511 // !{ ..., !42, ... }
513 if (ParseMDNodeID(Result, MID)) return true;
515 // If not a forward reference, just return it now.
516 if (Result) return false;
518 // Otherwise, create MDNode forward reference.
520 // FIXME: This is not unique enough!
521 std::string FwdRefName = "llvm.mdnode.fwdref." + utostr(MID);
522 Value *V = MDString::get(Context, FwdRefName);
523 MDNode *FwdNode = MDNode::get(Context, &V, 1);
524 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
526 if (NumberedMetadata.size() <= MID)
527 NumberedMetadata.resize(MID+1);
528 NumberedMetadata[MID] = FwdNode;
533 /// ParseNamedMetadata:
534 /// !foo = !{ !1, !2 }
535 bool LLParser::ParseNamedMetadata() {
536 assert(Lex.getKind() == lltok::MetadataVar);
537 std::string Name = Lex.getStrVal();
540 if (ParseToken(lltok::equal, "expected '=' here") ||
541 ParseToken(lltok::exclaim, "Expected '!' here") ||
542 ParseToken(lltok::lbrace, "Expected '{' here"))
545 SmallVector<MDNode *, 8> Elts;
547 // Null is a special case since it is typeless.
548 if (EatIfPresent(lltok::kw_null)) {
553 if (ParseToken(lltok::exclaim, "Expected '!' here"))
557 if (ParseMDNodeID(N)) return true;
559 } while (EatIfPresent(lltok::comma));
561 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
564 NamedMDNode::Create(Context, Name, Elts.data(), Elts.size(), M);
568 /// ParseStandaloneMetadata:
570 bool LLParser::ParseStandaloneMetadata() {
571 assert(Lex.getKind() == lltok::exclaim);
573 unsigned MetadataID = 0;
576 PATypeHolder Ty(Type::getVoidTy(Context));
577 SmallVector<Value *, 16> Elts;
578 if (ParseUInt32(MetadataID) ||
579 ParseToken(lltok::equal, "expected '=' here") ||
580 ParseType(Ty, TyLoc) ||
581 ParseToken(lltok::exclaim, "Expected '!' here") ||
582 ParseToken(lltok::lbrace, "Expected '{' here") ||
583 ParseMDNodeVector(Elts, NULL) ||
584 ParseToken(lltok::rbrace, "expected end of metadata node"))
587 MDNode *Init = MDNode::get(Context, Elts.data(), Elts.size());
589 // See if this was forward referenced, if so, handle it.
590 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
591 FI = ForwardRefMDNodes.find(MetadataID);
592 if (FI != ForwardRefMDNodes.end()) {
593 FI->second.first->replaceAllUsesWith(Init);
594 ForwardRefMDNodes.erase(FI);
596 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
598 if (MetadataID >= NumberedMetadata.size())
599 NumberedMetadata.resize(MetadataID+1);
601 if (NumberedMetadata[MetadataID] != 0)
602 return TokError("Metadata id is already used");
603 NumberedMetadata[MetadataID] = Init;
610 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
613 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
614 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
616 /// Everything through visibility has already been parsed.
618 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
619 unsigned Visibility) {
620 assert(Lex.getKind() == lltok::kw_alias);
623 LocTy LinkageLoc = Lex.getLoc();
624 if (ParseOptionalLinkage(Linkage))
627 if (Linkage != GlobalValue::ExternalLinkage &&
628 Linkage != GlobalValue::WeakAnyLinkage &&
629 Linkage != GlobalValue::WeakODRLinkage &&
630 Linkage != GlobalValue::InternalLinkage &&
631 Linkage != GlobalValue::PrivateLinkage &&
632 Linkage != GlobalValue::LinkerPrivateLinkage)
633 return Error(LinkageLoc, "invalid linkage type for alias");
636 LocTy AliaseeLoc = Lex.getLoc();
637 if (Lex.getKind() != lltok::kw_bitcast &&
638 Lex.getKind() != lltok::kw_getelementptr) {
639 if (ParseGlobalTypeAndValue(Aliasee)) return true;
641 // The bitcast dest type is not present, it is implied by the dest type.
643 if (ParseValID(ID)) return true;
644 if (ID.Kind != ValID::t_Constant)
645 return Error(AliaseeLoc, "invalid aliasee");
646 Aliasee = ID.ConstantVal;
649 if (!Aliasee->getType()->isPointerTy())
650 return Error(AliaseeLoc, "alias must have pointer type");
652 // Okay, create the alias but do not insert it into the module yet.
653 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
654 (GlobalValue::LinkageTypes)Linkage, Name,
656 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
658 // See if this value already exists in the symbol table. If so, it is either
659 // a redefinition or a definition of a forward reference.
660 if (GlobalValue *Val = M->getNamedValue(Name)) {
661 // See if this was a redefinition. If so, there is no entry in
663 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
664 I = ForwardRefVals.find(Name);
665 if (I == ForwardRefVals.end())
666 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
668 // Otherwise, this was a definition of forward ref. Verify that types
670 if (Val->getType() != GA->getType())
671 return Error(NameLoc,
672 "forward reference and definition of alias have different types");
674 // If they agree, just RAUW the old value with the alias and remove the
676 Val->replaceAllUsesWith(GA);
677 Val->eraseFromParent();
678 ForwardRefVals.erase(I);
681 // Insert into the module, we know its name won't collide now.
682 M->getAliasList().push_back(GA);
683 assert(GA->getNameStr() == Name && "Should not be a name conflict!");
689 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
690 /// OptionalAddrSpace GlobalType Type Const
691 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
692 /// OptionalAddrSpace GlobalType Type Const
694 /// Everything through visibility has been parsed already.
696 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
697 unsigned Linkage, bool HasLinkage,
698 unsigned Visibility) {
700 bool ThreadLocal, IsConstant;
703 PATypeHolder Ty(Type::getVoidTy(Context));
704 if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
705 ParseOptionalAddrSpace(AddrSpace) ||
706 ParseGlobalType(IsConstant) ||
707 ParseType(Ty, TyLoc))
710 // If the linkage is specified and is external, then no initializer is
713 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
714 Linkage != GlobalValue::ExternalWeakLinkage &&
715 Linkage != GlobalValue::ExternalLinkage)) {
716 if (ParseGlobalValue(Ty, Init))
720 if (Ty->isFunctionTy() || Ty->isLabelTy())
721 return Error(TyLoc, "invalid type for global variable");
723 GlobalVariable *GV = 0;
725 // See if the global was forward referenced, if so, use the global.
727 if (GlobalValue *GVal = M->getNamedValue(Name)) {
728 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
729 return Error(NameLoc, "redefinition of global '@" + Name + "'");
730 GV = cast<GlobalVariable>(GVal);
733 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
734 I = ForwardRefValIDs.find(NumberedVals.size());
735 if (I != ForwardRefValIDs.end()) {
736 GV = cast<GlobalVariable>(I->second.first);
737 ForwardRefValIDs.erase(I);
742 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
743 Name, 0, false, AddrSpace);
745 if (GV->getType()->getElementType() != Ty)
747 "forward reference and definition of global have different types");
749 // Move the forward-reference to the correct spot in the module.
750 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
754 NumberedVals.push_back(GV);
756 // Set the parsed properties on the global.
758 GV->setInitializer(Init);
759 GV->setConstant(IsConstant);
760 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
761 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
762 GV->setThreadLocal(ThreadLocal);
764 // Parse attributes on the global.
765 while (Lex.getKind() == lltok::comma) {
768 if (Lex.getKind() == lltok::kw_section) {
770 GV->setSection(Lex.getStrVal());
771 if (ParseToken(lltok::StringConstant, "expected global section string"))
773 } else if (Lex.getKind() == lltok::kw_align) {
775 if (ParseOptionalAlignment(Alignment)) return true;
776 GV->setAlignment(Alignment);
778 TokError("unknown global variable property!");
786 //===----------------------------------------------------------------------===//
787 // GlobalValue Reference/Resolution Routines.
788 //===----------------------------------------------------------------------===//
790 /// GetGlobalVal - Get a value with the specified name or ID, creating a
791 /// forward reference record if needed. This can return null if the value
792 /// exists but does not have the right type.
793 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, const Type *Ty,
795 const PointerType *PTy = dyn_cast<PointerType>(Ty);
797 Error(Loc, "global variable reference must have pointer type");
801 // Look this name up in the normal function symbol table.
803 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
805 // If this is a forward reference for the value, see if we already created a
806 // forward ref record.
808 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
809 I = ForwardRefVals.find(Name);
810 if (I != ForwardRefVals.end())
811 Val = I->second.first;
814 // If we have the value in the symbol table or fwd-ref table, return it.
816 if (Val->getType() == Ty) return Val;
817 Error(Loc, "'@" + Name + "' defined with type '" +
818 Val->getType()->getDescription() + "'");
822 // Otherwise, create a new forward reference for this value and remember it.
824 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
825 // Function types can return opaque but functions can't.
826 if (FT->getReturnType()->isOpaqueTy()) {
827 Error(Loc, "function may not return opaque type");
831 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
833 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
834 GlobalValue::ExternalWeakLinkage, 0, Name);
837 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
841 GlobalValue *LLParser::GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc) {
842 const PointerType *PTy = dyn_cast<PointerType>(Ty);
844 Error(Loc, "global variable reference must have pointer type");
848 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
850 // If this is a forward reference for the value, see if we already created a
851 // forward ref record.
853 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
854 I = ForwardRefValIDs.find(ID);
855 if (I != ForwardRefValIDs.end())
856 Val = I->second.first;
859 // If we have the value in the symbol table or fwd-ref table, return it.
861 if (Val->getType() == Ty) return Val;
862 Error(Loc, "'@" + utostr(ID) + "' defined with type '" +
863 Val->getType()->getDescription() + "'");
867 // Otherwise, create a new forward reference for this value and remember it.
869 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
870 // Function types can return opaque but functions can't.
871 if (FT->getReturnType()->isOpaqueTy()) {
872 Error(Loc, "function may not return opaque type");
875 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
877 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
878 GlobalValue::ExternalWeakLinkage, 0, "");
881 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
886 //===----------------------------------------------------------------------===//
888 //===----------------------------------------------------------------------===//
890 /// ParseToken - If the current token has the specified kind, eat it and return
891 /// success. Otherwise, emit the specified error and return failure.
892 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
893 if (Lex.getKind() != T)
894 return TokError(ErrMsg);
899 /// ParseStringConstant
900 /// ::= StringConstant
901 bool LLParser::ParseStringConstant(std::string &Result) {
902 if (Lex.getKind() != lltok::StringConstant)
903 return TokError("expected string constant");
904 Result = Lex.getStrVal();
911 bool LLParser::ParseUInt32(unsigned &Val) {
912 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
913 return TokError("expected integer");
914 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
915 if (Val64 != unsigned(Val64))
916 return TokError("expected 32-bit integer (too large)");
923 /// ParseOptionalAddrSpace
925 /// := 'addrspace' '(' uint32 ')'
926 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
928 if (!EatIfPresent(lltok::kw_addrspace))
930 return ParseToken(lltok::lparen, "expected '(' in address space") ||
931 ParseUInt32(AddrSpace) ||
932 ParseToken(lltok::rparen, "expected ')' in address space");
935 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
936 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
937 /// 2: function attr.
938 /// 3: function arg after value: FIXME: REMOVE IN LLVM 3.0
939 bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
940 Attrs = Attribute::None;
941 LocTy AttrLoc = Lex.getLoc();
944 switch (Lex.getKind()) {
947 // Treat these as signext/zeroext if they occur in the argument list after
948 // the value, as in "call i8 @foo(i8 10 sext)". If they occur before the
949 // value, as in "call i8 @foo(i8 sext (" then it is part of a constant
951 // FIXME: REMOVE THIS IN LLVM 3.0
953 if (Lex.getKind() == lltok::kw_sext)
954 Attrs |= Attribute::SExt;
956 Attrs |= Attribute::ZExt;
960 default: // End of attributes.
961 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
962 return Error(AttrLoc, "invalid use of function-only attribute");
964 if (AttrKind != 0 && AttrKind != 3 && (Attrs & Attribute::ParameterOnly))
965 return Error(AttrLoc, "invalid use of parameter-only attribute");
968 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
969 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
970 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
971 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
972 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
973 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
974 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
975 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
977 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
978 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
979 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
980 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
981 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
982 case lltok::kw_inlinehint: Attrs |= Attribute::InlineHint; break;
983 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
984 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
985 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
986 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
987 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
988 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
989 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
991 case lltok::kw_alignstack: {
993 if (ParseOptionalStackAlignment(Alignment))
995 Attrs |= Attribute::constructStackAlignmentFromInt(Alignment);
999 case lltok::kw_align: {
1001 if (ParseOptionalAlignment(Alignment))
1003 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
1012 /// ParseOptionalLinkage
1015 /// ::= 'linker_private'
1020 /// ::= 'linkonce_odr'
1025 /// ::= 'extern_weak'
1027 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1029 switch (Lex.getKind()) {
1030 default: Res=GlobalValue::ExternalLinkage; return false;
1031 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1032 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1033 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1034 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1035 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1036 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1037 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1038 case lltok::kw_available_externally:
1039 Res = GlobalValue::AvailableExternallyLinkage;
1041 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1042 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1043 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1044 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1045 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1046 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1053 /// ParseOptionalVisibility
1059 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1060 switch (Lex.getKind()) {
1061 default: Res = GlobalValue::DefaultVisibility; return false;
1062 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1063 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1064 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1070 /// ParseOptionalCallingConv
1075 /// ::= 'x86_stdcallcc'
1076 /// ::= 'x86_fastcallcc'
1077 /// ::= 'arm_apcscc'
1078 /// ::= 'arm_aapcscc'
1079 /// ::= 'arm_aapcs_vfpcc'
1080 /// ::= 'msp430_intrcc'
1083 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1084 switch (Lex.getKind()) {
1085 default: CC = CallingConv::C; return false;
1086 case lltok::kw_ccc: CC = CallingConv::C; break;
1087 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1088 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1089 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1090 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1091 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1092 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1093 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1094 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1095 case lltok::kw_cc: {
1096 unsigned ArbitraryCC;
1098 if (ParseUInt32(ArbitraryCC)) {
1101 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1111 /// ParseInstructionMetadata
1112 /// ::= !dbg !42 (',' !dbg !57)*
1113 bool LLParser::ParseInstructionMetadata(Instruction *Inst) {
1115 if (Lex.getKind() != lltok::MetadataVar)
1116 return TokError("expected metadata after comma");
1118 std::string Name = Lex.getStrVal();
1123 SMLoc Loc = Lex.getLoc();
1124 if (ParseToken(lltok::exclaim, "expected '!' here") ||
1125 ParseMDNodeID(Node, NodeID))
1128 unsigned MDK = M->getMDKindID(Name.c_str());
1130 // If we got the node, add it to the instruction.
1131 Inst->setMetadata(MDK, Node);
1133 MDRef R = { Loc, MDK, NodeID };
1134 // Otherwise, remember that this should be resolved later.
1135 ForwardRefInstMetadata[Inst].push_back(R);
1138 // If this is the end of the list, we're done.
1139 } while (EatIfPresent(lltok::comma));
1143 /// ParseOptionalAlignment
1146 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1148 if (!EatIfPresent(lltok::kw_align))
1150 LocTy AlignLoc = Lex.getLoc();
1151 if (ParseUInt32(Alignment)) return true;
1152 if (!isPowerOf2_32(Alignment))
1153 return Error(AlignLoc, "alignment is not a power of two");
1157 /// ParseOptionalCommaAlign
1161 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1163 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1164 bool &AteExtraComma) {
1165 AteExtraComma = false;
1166 while (EatIfPresent(lltok::comma)) {
1167 // Metadata at the end is an early exit.
1168 if (Lex.getKind() == lltok::MetadataVar) {
1169 AteExtraComma = true;
1173 if (Lex.getKind() != lltok::kw_align)
1174 return Error(Lex.getLoc(), "expected metadata or 'align'");
1176 if (ParseOptionalAlignment(Alignment)) return true;
1182 /// ParseOptionalStackAlignment
1184 /// ::= 'alignstack' '(' 4 ')'
1185 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1187 if (!EatIfPresent(lltok::kw_alignstack))
1189 LocTy ParenLoc = Lex.getLoc();
1190 if (!EatIfPresent(lltok::lparen))
1191 return Error(ParenLoc, "expected '('");
1192 LocTy AlignLoc = Lex.getLoc();
1193 if (ParseUInt32(Alignment)) return true;
1194 ParenLoc = Lex.getLoc();
1195 if (!EatIfPresent(lltok::rparen))
1196 return Error(ParenLoc, "expected ')'");
1197 if (!isPowerOf2_32(Alignment))
1198 return Error(AlignLoc, "stack alignment is not a power of two");
1202 /// ParseIndexList - This parses the index list for an insert/extractvalue
1203 /// instruction. This sets AteExtraComma in the case where we eat an extra
1204 /// comma at the end of the line and find that it is followed by metadata.
1205 /// Clients that don't allow metadata can call the version of this function that
1206 /// only takes one argument.
1209 /// ::= (',' uint32)+
1211 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1212 bool &AteExtraComma) {
1213 AteExtraComma = false;
1215 if (Lex.getKind() != lltok::comma)
1216 return TokError("expected ',' as start of index list");
1218 while (EatIfPresent(lltok::comma)) {
1219 if (Lex.getKind() == lltok::MetadataVar) {
1220 AteExtraComma = true;
1224 if (ParseUInt32(Idx)) return true;
1225 Indices.push_back(Idx);
1231 //===----------------------------------------------------------------------===//
1233 //===----------------------------------------------------------------------===//
1235 /// ParseType - Parse and resolve a full type.
1236 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1237 LocTy TypeLoc = Lex.getLoc();
1238 if (ParseTypeRec(Result)) return true;
1240 // Verify no unresolved uprefs.
1241 if (!UpRefs.empty())
1242 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1244 if (!AllowVoid && Result.get()->isVoidTy())
1245 return Error(TypeLoc, "void type only allowed for function results");
1250 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1251 /// called. It loops through the UpRefs vector, which is a list of the
1252 /// currently active types. For each type, if the up-reference is contained in
1253 /// the newly completed type, we decrement the level count. When the level
1254 /// count reaches zero, the up-referenced type is the type that is passed in:
1255 /// thus we can complete the cycle.
1257 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1258 // If Ty isn't abstract, or if there are no up-references in it, then there is
1259 // nothing to resolve here.
1260 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1262 PATypeHolder Ty(ty);
1264 dbgs() << "Type '" << Ty->getDescription()
1265 << "' newly formed. Resolving upreferences.\n"
1266 << UpRefs.size() << " upreferences active!\n";
1269 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1270 // to zero), we resolve them all together before we resolve them to Ty. At
1271 // the end of the loop, if there is anything to resolve to Ty, it will be in
1273 OpaqueType *TypeToResolve = 0;
1275 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1276 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1278 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1279 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1282 dbgs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1283 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1284 << (ContainsType ? "true" : "false")
1285 << " level=" << UpRefs[i].NestingLevel << "\n";
1290 // Decrement level of upreference
1291 unsigned Level = --UpRefs[i].NestingLevel;
1292 UpRefs[i].LastContainedTy = Ty;
1294 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1299 dbgs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1302 TypeToResolve = UpRefs[i].UpRefTy;
1304 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1305 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1306 --i; // Do not skip the next element.
1310 TypeToResolve->refineAbstractTypeTo(Ty);
1316 /// ParseTypeRec - The recursive function used to process the internal
1317 /// implementation details of types.
1318 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1319 switch (Lex.getKind()) {
1321 return TokError("expected type");
1323 // TypeRec ::= 'float' | 'void' (etc)
1324 Result = Lex.getTyVal();
1327 case lltok::kw_opaque:
1328 // TypeRec ::= 'opaque'
1329 Result = OpaqueType::get(Context);
1333 // TypeRec ::= '{' ... '}'
1334 if (ParseStructType(Result, false))
1337 case lltok::kw_union:
1338 // TypeRec ::= 'union' '{' ... '}'
1339 if (ParseUnionType(Result))
1342 case lltok::lsquare:
1343 // TypeRec ::= '[' ... ']'
1344 Lex.Lex(); // eat the lsquare.
1345 if (ParseArrayVectorType(Result, false))
1348 case lltok::less: // Either vector or packed struct.
1349 // TypeRec ::= '<' ... '>'
1351 if (Lex.getKind() == lltok::lbrace) {
1352 if (ParseStructType(Result, true) ||
1353 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1355 } else if (ParseArrayVectorType(Result, true))
1358 case lltok::LocalVar:
1359 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1361 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1364 Result = OpaqueType::get(Context);
1365 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1366 std::make_pair(Result,
1368 M->addTypeName(Lex.getStrVal(), Result.get());
1373 case lltok::LocalVarID:
1375 if (Lex.getUIntVal() < NumberedTypes.size())
1376 Result = NumberedTypes[Lex.getUIntVal()];
1378 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1379 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1380 if (I != ForwardRefTypeIDs.end())
1381 Result = I->second.first;
1383 Result = OpaqueType::get(Context);
1384 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1385 std::make_pair(Result,
1391 case lltok::backslash: {
1392 // TypeRec ::= '\' 4
1395 if (ParseUInt32(Val)) return true;
1396 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1397 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1403 // Parse the type suffixes.
1405 switch (Lex.getKind()) {
1407 default: return false;
1409 // TypeRec ::= TypeRec '*'
1411 if (Result.get()->isLabelTy())
1412 return TokError("basic block pointers are invalid");
1413 if (Result.get()->isVoidTy())
1414 return TokError("pointers to void are invalid; use i8* instead");
1415 if (!PointerType::isValidElementType(Result.get()))
1416 return TokError("pointer to this type is invalid");
1417 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1421 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1422 case lltok::kw_addrspace: {
1423 if (Result.get()->isLabelTy())
1424 return TokError("basic block pointers are invalid");
1425 if (Result.get()->isVoidTy())
1426 return TokError("pointers to void are invalid; use i8* instead");
1427 if (!PointerType::isValidElementType(Result.get()))
1428 return TokError("pointer to this type is invalid");
1430 if (ParseOptionalAddrSpace(AddrSpace) ||
1431 ParseToken(lltok::star, "expected '*' in address space"))
1434 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1438 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1440 if (ParseFunctionType(Result))
1447 /// ParseParameterList
1449 /// ::= '(' Arg (',' Arg)* ')'
1451 /// ::= Type OptionalAttributes Value OptionalAttributes
1452 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1453 PerFunctionState &PFS) {
1454 if (ParseToken(lltok::lparen, "expected '(' in call"))
1457 while (Lex.getKind() != lltok::rparen) {
1458 // If this isn't the first argument, we need a comma.
1459 if (!ArgList.empty() &&
1460 ParseToken(lltok::comma, "expected ',' in argument list"))
1463 // Parse the argument.
1465 PATypeHolder ArgTy(Type::getVoidTy(Context));
1466 unsigned ArgAttrs1 = Attribute::None;
1467 unsigned ArgAttrs2 = Attribute::None;
1469 if (ParseType(ArgTy, ArgLoc))
1472 // Otherwise, handle normal operands.
1473 if (ParseOptionalAttrs(ArgAttrs1, 0) ||
1474 ParseValue(ArgTy, V, PFS) ||
1475 // FIXME: Should not allow attributes after the argument, remove this
1477 ParseOptionalAttrs(ArgAttrs2, 3))
1479 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1482 Lex.Lex(); // Lex the ')'.
1488 /// ParseArgumentList - Parse the argument list for a function type or function
1489 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1490 /// ::= '(' ArgTypeListI ')'
1494 /// ::= ArgTypeList ',' '...'
1495 /// ::= ArgType (',' ArgType)*
1497 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1498 bool &isVarArg, bool inType) {
1500 assert(Lex.getKind() == lltok::lparen);
1501 Lex.Lex(); // eat the (.
1503 if (Lex.getKind() == lltok::rparen) {
1505 } else if (Lex.getKind() == lltok::dotdotdot) {
1509 LocTy TypeLoc = Lex.getLoc();
1510 PATypeHolder ArgTy(Type::getVoidTy(Context));
1514 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1515 // types (such as a function returning a pointer to itself). If parsing a
1516 // function prototype, we require fully resolved types.
1517 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1518 ParseOptionalAttrs(Attrs, 0)) return true;
1520 if (ArgTy->isVoidTy())
1521 return Error(TypeLoc, "argument can not have void type");
1523 if (Lex.getKind() == lltok::LocalVar ||
1524 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1525 Name = Lex.getStrVal();
1529 if (!FunctionType::isValidArgumentType(ArgTy))
1530 return Error(TypeLoc, "invalid type for function argument");
1532 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1534 while (EatIfPresent(lltok::comma)) {
1535 // Handle ... at end of arg list.
1536 if (EatIfPresent(lltok::dotdotdot)) {
1541 // Otherwise must be an argument type.
1542 TypeLoc = Lex.getLoc();
1543 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1544 ParseOptionalAttrs(Attrs, 0)) return true;
1546 if (ArgTy->isVoidTy())
1547 return Error(TypeLoc, "argument can not have void type");
1549 if (Lex.getKind() == lltok::LocalVar ||
1550 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1551 Name = Lex.getStrVal();
1557 if (!ArgTy->isFirstClassType() && !ArgTy->isOpaqueTy())
1558 return Error(TypeLoc, "invalid type for function argument");
1560 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1564 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1567 /// ParseFunctionType
1568 /// ::= Type ArgumentList OptionalAttrs
1569 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1570 assert(Lex.getKind() == lltok::lparen);
1572 if (!FunctionType::isValidReturnType(Result))
1573 return TokError("invalid function return type");
1575 std::vector<ArgInfo> ArgList;
1578 if (ParseArgumentList(ArgList, isVarArg, true) ||
1579 // FIXME: Allow, but ignore attributes on function types!
1580 // FIXME: Remove in LLVM 3.0
1581 ParseOptionalAttrs(Attrs, 2))
1584 // Reject names on the arguments lists.
1585 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1586 if (!ArgList[i].Name.empty())
1587 return Error(ArgList[i].Loc, "argument name invalid in function type");
1588 if (!ArgList[i].Attrs != 0) {
1589 // Allow but ignore attributes on function types; this permits
1591 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1595 std::vector<const Type*> ArgListTy;
1596 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1597 ArgListTy.push_back(ArgList[i].Type);
1599 Result = HandleUpRefs(FunctionType::get(Result.get(),
1600 ArgListTy, isVarArg));
1604 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1607 /// ::= '{' TypeRec (',' TypeRec)* '}'
1608 /// ::= '<' '{' '}' '>'
1609 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1610 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1611 assert(Lex.getKind() == lltok::lbrace);
1612 Lex.Lex(); // Consume the '{'
1614 if (EatIfPresent(lltok::rbrace)) {
1615 Result = StructType::get(Context, Packed);
1619 std::vector<PATypeHolder> ParamsList;
1620 LocTy EltTyLoc = Lex.getLoc();
1621 if (ParseTypeRec(Result)) return true;
1622 ParamsList.push_back(Result);
1624 if (Result->isVoidTy())
1625 return Error(EltTyLoc, "struct element can not have void type");
1626 if (!StructType::isValidElementType(Result))
1627 return Error(EltTyLoc, "invalid element type for struct");
1629 while (EatIfPresent(lltok::comma)) {
1630 EltTyLoc = Lex.getLoc();
1631 if (ParseTypeRec(Result)) return true;
1633 if (Result->isVoidTy())
1634 return Error(EltTyLoc, "struct element can not have void type");
1635 if (!StructType::isValidElementType(Result))
1636 return Error(EltTyLoc, "invalid element type for struct");
1638 ParamsList.push_back(Result);
1641 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1644 std::vector<const Type*> ParamsListTy;
1645 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1646 ParamsListTy.push_back(ParamsList[i].get());
1647 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1653 /// ::= 'union' '{' TypeRec (',' TypeRec)* '}'
1654 bool LLParser::ParseUnionType(PATypeHolder &Result) {
1655 assert(Lex.getKind() == lltok::kw_union);
1656 Lex.Lex(); // Consume the 'union'
1658 if (ParseToken(lltok::lbrace, "'{' expected after 'union'")) return true;
1660 SmallVector<PATypeHolder, 8> ParamsList;
1662 LocTy EltTyLoc = Lex.getLoc();
1663 if (ParseTypeRec(Result)) return true;
1664 ParamsList.push_back(Result);
1666 if (Result->isVoidTy())
1667 return Error(EltTyLoc, "union element can not have void type");
1668 if (!UnionType::isValidElementType(Result))
1669 return Error(EltTyLoc, "invalid element type for union");
1671 } while (EatIfPresent(lltok::comma)) ;
1673 if (ParseToken(lltok::rbrace, "expected '}' at end of union"))
1676 SmallVector<const Type*, 8> ParamsListTy;
1677 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1678 ParamsListTy.push_back(ParamsList[i].get());
1679 Result = HandleUpRefs(UnionType::get(&ParamsListTy[0], ParamsListTy.size()));
1683 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1684 /// token has already been consumed.
1686 /// ::= '[' APSINTVAL 'x' Types ']'
1687 /// ::= '<' APSINTVAL 'x' Types '>'
1688 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1689 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1690 Lex.getAPSIntVal().getBitWidth() > 64)
1691 return TokError("expected number in address space");
1693 LocTy SizeLoc = Lex.getLoc();
1694 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1697 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1700 LocTy TypeLoc = Lex.getLoc();
1701 PATypeHolder EltTy(Type::getVoidTy(Context));
1702 if (ParseTypeRec(EltTy)) return true;
1704 if (EltTy->isVoidTy())
1705 return Error(TypeLoc, "array and vector element type cannot be void");
1707 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1708 "expected end of sequential type"))
1713 return Error(SizeLoc, "zero element vector is illegal");
1714 if ((unsigned)Size != Size)
1715 return Error(SizeLoc, "size too large for vector");
1716 if (!VectorType::isValidElementType(EltTy))
1717 return Error(TypeLoc, "vector element type must be fp or integer");
1718 Result = VectorType::get(EltTy, unsigned(Size));
1720 if (!ArrayType::isValidElementType(EltTy))
1721 return Error(TypeLoc, "invalid array element type");
1722 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1727 //===----------------------------------------------------------------------===//
1728 // Function Semantic Analysis.
1729 //===----------------------------------------------------------------------===//
1731 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1733 : P(p), F(f), FunctionNumber(functionNumber) {
1735 // Insert unnamed arguments into the NumberedVals list.
1736 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1739 NumberedVals.push_back(AI);
1742 LLParser::PerFunctionState::~PerFunctionState() {
1743 // If there were any forward referenced non-basicblock values, delete them.
1744 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1745 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1746 if (!isa<BasicBlock>(I->second.first)) {
1747 I->second.first->replaceAllUsesWith(
1748 UndefValue::get(I->second.first->getType()));
1749 delete I->second.first;
1750 I->second.first = 0;
1753 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1754 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1755 if (!isa<BasicBlock>(I->second.first)) {
1756 I->second.first->replaceAllUsesWith(
1757 UndefValue::get(I->second.first->getType()));
1758 delete I->second.first;
1759 I->second.first = 0;
1763 bool LLParser::PerFunctionState::FinishFunction() {
1764 // Check to see if someone took the address of labels in this block.
1765 if (!P.ForwardRefBlockAddresses.empty()) {
1767 if (!F.getName().empty()) {
1768 FunctionID.Kind = ValID::t_GlobalName;
1769 FunctionID.StrVal = F.getName();
1771 FunctionID.Kind = ValID::t_GlobalID;
1772 FunctionID.UIntVal = FunctionNumber;
1775 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1776 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1777 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1778 // Resolve all these references.
1779 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1782 P.ForwardRefBlockAddresses.erase(FRBAI);
1786 if (!ForwardRefVals.empty())
1787 return P.Error(ForwardRefVals.begin()->second.second,
1788 "use of undefined value '%" + ForwardRefVals.begin()->first +
1790 if (!ForwardRefValIDs.empty())
1791 return P.Error(ForwardRefValIDs.begin()->second.second,
1792 "use of undefined value '%" +
1793 utostr(ForwardRefValIDs.begin()->first) + "'");
1798 /// GetVal - Get a value with the specified name or ID, creating a
1799 /// forward reference record if needed. This can return null if the value
1800 /// exists but does not have the right type.
1801 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1802 const Type *Ty, LocTy Loc) {
1803 // Look this name up in the normal function symbol table.
1804 Value *Val = F.getValueSymbolTable().lookup(Name);
1806 // If this is a forward reference for the value, see if we already created a
1807 // forward ref record.
1809 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1810 I = ForwardRefVals.find(Name);
1811 if (I != ForwardRefVals.end())
1812 Val = I->second.first;
1815 // If we have the value in the symbol table or fwd-ref table, return it.
1817 if (Val->getType() == Ty) return Val;
1818 if (Ty->isLabelTy())
1819 P.Error(Loc, "'%" + Name + "' is not a basic block");
1821 P.Error(Loc, "'%" + Name + "' defined with type '" +
1822 Val->getType()->getDescription() + "'");
1826 // Don't make placeholders with invalid type.
1827 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1828 P.Error(Loc, "invalid use of a non-first-class type");
1832 // Otherwise, create a new forward reference for this value and remember it.
1834 if (Ty->isLabelTy())
1835 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1837 FwdVal = new Argument(Ty, Name);
1839 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1843 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1845 // Look this name up in the normal function symbol table.
1846 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1848 // If this is a forward reference for the value, see if we already created a
1849 // forward ref record.
1851 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1852 I = ForwardRefValIDs.find(ID);
1853 if (I != ForwardRefValIDs.end())
1854 Val = I->second.first;
1857 // If we have the value in the symbol table or fwd-ref table, return it.
1859 if (Val->getType() == Ty) return Val;
1860 if (Ty->isLabelTy())
1861 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1863 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1864 Val->getType()->getDescription() + "'");
1868 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1869 P.Error(Loc, "invalid use of a non-first-class type");
1873 // Otherwise, create a new forward reference for this value and remember it.
1875 if (Ty->isLabelTy())
1876 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1878 FwdVal = new Argument(Ty);
1880 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1884 /// SetInstName - After an instruction is parsed and inserted into its
1885 /// basic block, this installs its name.
1886 bool LLParser::PerFunctionState::SetInstName(int NameID,
1887 const std::string &NameStr,
1888 LocTy NameLoc, Instruction *Inst) {
1889 // If this instruction has void type, it cannot have a name or ID specified.
1890 if (Inst->getType()->isVoidTy()) {
1891 if (NameID != -1 || !NameStr.empty())
1892 return P.Error(NameLoc, "instructions returning void cannot have a name");
1896 // If this was a numbered instruction, verify that the instruction is the
1897 // expected value and resolve any forward references.
1898 if (NameStr.empty()) {
1899 // If neither a name nor an ID was specified, just use the next ID.
1901 NameID = NumberedVals.size();
1903 if (unsigned(NameID) != NumberedVals.size())
1904 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1905 utostr(NumberedVals.size()) + "'");
1907 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1908 ForwardRefValIDs.find(NameID);
1909 if (FI != ForwardRefValIDs.end()) {
1910 if (FI->second.first->getType() != Inst->getType())
1911 return P.Error(NameLoc, "instruction forward referenced with type '" +
1912 FI->second.first->getType()->getDescription() + "'");
1913 FI->second.first->replaceAllUsesWith(Inst);
1914 delete FI->second.first;
1915 ForwardRefValIDs.erase(FI);
1918 NumberedVals.push_back(Inst);
1922 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1923 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1924 FI = ForwardRefVals.find(NameStr);
1925 if (FI != ForwardRefVals.end()) {
1926 if (FI->second.first->getType() != Inst->getType())
1927 return P.Error(NameLoc, "instruction forward referenced with type '" +
1928 FI->second.first->getType()->getDescription() + "'");
1929 FI->second.first->replaceAllUsesWith(Inst);
1930 delete FI->second.first;
1931 ForwardRefVals.erase(FI);
1934 // Set the name on the instruction.
1935 Inst->setName(NameStr);
1937 if (Inst->getNameStr() != NameStr)
1938 return P.Error(NameLoc, "multiple definition of local value named '" +
1943 /// GetBB - Get a basic block with the specified name or ID, creating a
1944 /// forward reference record if needed.
1945 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1947 return cast_or_null<BasicBlock>(GetVal(Name,
1948 Type::getLabelTy(F.getContext()), Loc));
1951 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1952 return cast_or_null<BasicBlock>(GetVal(ID,
1953 Type::getLabelTy(F.getContext()), Loc));
1956 /// DefineBB - Define the specified basic block, which is either named or
1957 /// unnamed. If there is an error, this returns null otherwise it returns
1958 /// the block being defined.
1959 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1963 BB = GetBB(NumberedVals.size(), Loc);
1965 BB = GetBB(Name, Loc);
1966 if (BB == 0) return 0; // Already diagnosed error.
1968 // Move the block to the end of the function. Forward ref'd blocks are
1969 // inserted wherever they happen to be referenced.
1970 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1972 // Remove the block from forward ref sets.
1974 ForwardRefValIDs.erase(NumberedVals.size());
1975 NumberedVals.push_back(BB);
1977 // BB forward references are already in the function symbol table.
1978 ForwardRefVals.erase(Name);
1984 //===----------------------------------------------------------------------===//
1986 //===----------------------------------------------------------------------===//
1988 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1989 /// type implied. For example, if we parse "4" we don't know what integer type
1990 /// it has. The value will later be combined with its type and checked for
1991 /// sanity. PFS is used to convert function-local operands of metadata (since
1992 /// metadata operands are not just parsed here but also converted to values).
1993 /// PFS can be null when we are not parsing metadata values inside a function.
1994 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
1995 ID.Loc = Lex.getLoc();
1996 switch (Lex.getKind()) {
1997 default: return TokError("expected value token");
1998 case lltok::GlobalID: // @42
1999 ID.UIntVal = Lex.getUIntVal();
2000 ID.Kind = ValID::t_GlobalID;
2002 case lltok::GlobalVar: // @foo
2003 ID.StrVal = Lex.getStrVal();
2004 ID.Kind = ValID::t_GlobalName;
2006 case lltok::LocalVarID: // %42
2007 ID.UIntVal = Lex.getUIntVal();
2008 ID.Kind = ValID::t_LocalID;
2010 case lltok::LocalVar: // %foo
2011 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
2012 ID.StrVal = Lex.getStrVal();
2013 ID.Kind = ValID::t_LocalName;
2015 case lltok::exclaim: // !{...} MDNode, !"foo" MDString
2018 if (EatIfPresent(lltok::lbrace)) {
2019 SmallVector<Value*, 16> Elts;
2020 if (ParseMDNodeVector(Elts, PFS) ||
2021 ParseToken(lltok::rbrace, "expected end of metadata node"))
2024 ID.MDNodeVal = MDNode::get(Context, Elts.data(), Elts.size());
2025 ID.Kind = ValID::t_MDNode;
2029 // Standalone metadata reference
2030 // !{ ..., !42, ... }
2031 if (Lex.getKind() == lltok::APSInt) {
2032 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2033 ID.Kind = ValID::t_MDNode;
2038 // ::= '!' STRINGCONSTANT
2039 if (ParseMDString(ID.MDStringVal)) return true;
2040 ID.Kind = ValID::t_MDString;
2043 ID.APSIntVal = Lex.getAPSIntVal();
2044 ID.Kind = ValID::t_APSInt;
2046 case lltok::APFloat:
2047 ID.APFloatVal = Lex.getAPFloatVal();
2048 ID.Kind = ValID::t_APFloat;
2050 case lltok::kw_true:
2051 ID.ConstantVal = ConstantInt::getTrue(Context);
2052 ID.Kind = ValID::t_Constant;
2054 case lltok::kw_false:
2055 ID.ConstantVal = ConstantInt::getFalse(Context);
2056 ID.Kind = ValID::t_Constant;
2058 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2059 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2060 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2062 case lltok::lbrace: {
2063 // ValID ::= '{' ConstVector '}'
2065 SmallVector<Constant*, 16> Elts;
2066 if (ParseGlobalValueVector(Elts) ||
2067 ParseToken(lltok::rbrace, "expected end of struct constant"))
2070 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
2071 Elts.size(), false);
2072 ID.Kind = ValID::t_Constant;
2076 // ValID ::= '<' ConstVector '>' --> Vector.
2077 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2079 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2081 SmallVector<Constant*, 16> Elts;
2082 LocTy FirstEltLoc = Lex.getLoc();
2083 if (ParseGlobalValueVector(Elts) ||
2085 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2086 ParseToken(lltok::greater, "expected end of constant"))
2089 if (isPackedStruct) {
2091 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
2092 ID.Kind = ValID::t_Constant;
2097 return Error(ID.Loc, "constant vector must not be empty");
2099 if (!Elts[0]->getType()->isIntegerTy() &&
2100 !Elts[0]->getType()->isFloatingPointTy())
2101 return Error(FirstEltLoc,
2102 "vector elements must have integer or floating point type");
2104 // Verify that all the vector elements have the same type.
2105 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2106 if (Elts[i]->getType() != Elts[0]->getType())
2107 return Error(FirstEltLoc,
2108 "vector element #" + utostr(i) +
2109 " is not of type '" + Elts[0]->getType()->getDescription());
2111 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
2112 ID.Kind = ValID::t_Constant;
2115 case lltok::lsquare: { // Array Constant
2117 SmallVector<Constant*, 16> Elts;
2118 LocTy FirstEltLoc = Lex.getLoc();
2119 if (ParseGlobalValueVector(Elts) ||
2120 ParseToken(lltok::rsquare, "expected end of array constant"))
2123 // Handle empty element.
2125 // Use undef instead of an array because it's inconvenient to determine
2126 // the element type at this point, there being no elements to examine.
2127 ID.Kind = ValID::t_EmptyArray;
2131 if (!Elts[0]->getType()->isFirstClassType())
2132 return Error(FirstEltLoc, "invalid array element type: " +
2133 Elts[0]->getType()->getDescription());
2135 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2137 // Verify all elements are correct type!
2138 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2139 if (Elts[i]->getType() != Elts[0]->getType())
2140 return Error(FirstEltLoc,
2141 "array element #" + utostr(i) +
2142 " is not of type '" +Elts[0]->getType()->getDescription());
2145 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
2146 ID.Kind = ValID::t_Constant;
2149 case lltok::kw_c: // c "foo"
2151 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
2152 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2153 ID.Kind = ValID::t_Constant;
2156 case lltok::kw_asm: {
2157 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2158 bool HasSideEffect, AlignStack;
2160 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2161 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2162 ParseStringConstant(ID.StrVal) ||
2163 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2164 ParseToken(lltok::StringConstant, "expected constraint string"))
2166 ID.StrVal2 = Lex.getStrVal();
2167 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2168 ID.Kind = ValID::t_InlineAsm;
2172 case lltok::kw_blockaddress: {
2173 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2177 LocTy FnLoc, LabelLoc;
2179 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2181 ParseToken(lltok::comma, "expected comma in block address expression")||
2182 ParseValID(Label) ||
2183 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2186 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2187 return Error(Fn.Loc, "expected function name in blockaddress");
2188 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2189 return Error(Label.Loc, "expected basic block name in blockaddress");
2191 // Make a global variable as a placeholder for this reference.
2192 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2193 false, GlobalValue::InternalLinkage,
2195 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2196 ID.ConstantVal = FwdRef;
2197 ID.Kind = ValID::t_Constant;
2201 case lltok::kw_trunc:
2202 case lltok::kw_zext:
2203 case lltok::kw_sext:
2204 case lltok::kw_fptrunc:
2205 case lltok::kw_fpext:
2206 case lltok::kw_bitcast:
2207 case lltok::kw_uitofp:
2208 case lltok::kw_sitofp:
2209 case lltok::kw_fptoui:
2210 case lltok::kw_fptosi:
2211 case lltok::kw_inttoptr:
2212 case lltok::kw_ptrtoint: {
2213 unsigned Opc = Lex.getUIntVal();
2214 PATypeHolder DestTy(Type::getVoidTy(Context));
2217 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2218 ParseGlobalTypeAndValue(SrcVal) ||
2219 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2220 ParseType(DestTy) ||
2221 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2223 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2224 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2225 SrcVal->getType()->getDescription() + "' to '" +
2226 DestTy->getDescription() + "'");
2227 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2229 ID.Kind = ValID::t_Constant;
2232 case lltok::kw_extractvalue: {
2235 SmallVector<unsigned, 4> Indices;
2236 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2237 ParseGlobalTypeAndValue(Val) ||
2238 ParseIndexList(Indices) ||
2239 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2242 if (!Val->getType()->isAggregateType())
2243 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2244 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
2246 return Error(ID.Loc, "invalid indices for extractvalue");
2248 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
2249 ID.Kind = ValID::t_Constant;
2252 case lltok::kw_insertvalue: {
2254 Constant *Val0, *Val1;
2255 SmallVector<unsigned, 4> Indices;
2256 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2257 ParseGlobalTypeAndValue(Val0) ||
2258 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2259 ParseGlobalTypeAndValue(Val1) ||
2260 ParseIndexList(Indices) ||
2261 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2263 if (!Val0->getType()->isAggregateType())
2264 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2265 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
2267 return Error(ID.Loc, "invalid indices for insertvalue");
2268 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
2269 Indices.data(), Indices.size());
2270 ID.Kind = ValID::t_Constant;
2273 case lltok::kw_icmp:
2274 case lltok::kw_fcmp: {
2275 unsigned PredVal, Opc = Lex.getUIntVal();
2276 Constant *Val0, *Val1;
2278 if (ParseCmpPredicate(PredVal, Opc) ||
2279 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2280 ParseGlobalTypeAndValue(Val0) ||
2281 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2282 ParseGlobalTypeAndValue(Val1) ||
2283 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2286 if (Val0->getType() != Val1->getType())
2287 return Error(ID.Loc, "compare operands must have the same type");
2289 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2291 if (Opc == Instruction::FCmp) {
2292 if (!Val0->getType()->isFPOrFPVectorTy())
2293 return Error(ID.Loc, "fcmp requires floating point operands");
2294 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2296 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2297 if (!Val0->getType()->isIntOrIntVectorTy() &&
2298 !Val0->getType()->isPointerTy())
2299 return Error(ID.Loc, "icmp requires pointer or integer operands");
2300 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2302 ID.Kind = ValID::t_Constant;
2306 // Binary Operators.
2308 case lltok::kw_fadd:
2310 case lltok::kw_fsub:
2312 case lltok::kw_fmul:
2313 case lltok::kw_udiv:
2314 case lltok::kw_sdiv:
2315 case lltok::kw_fdiv:
2316 case lltok::kw_urem:
2317 case lltok::kw_srem:
2318 case lltok::kw_frem: {
2322 unsigned Opc = Lex.getUIntVal();
2323 Constant *Val0, *Val1;
2325 LocTy ModifierLoc = Lex.getLoc();
2326 if (Opc == Instruction::Add ||
2327 Opc == Instruction::Sub ||
2328 Opc == Instruction::Mul) {
2329 if (EatIfPresent(lltok::kw_nuw))
2331 if (EatIfPresent(lltok::kw_nsw)) {
2333 if (EatIfPresent(lltok::kw_nuw))
2336 } else if (Opc == Instruction::SDiv) {
2337 if (EatIfPresent(lltok::kw_exact))
2340 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2341 ParseGlobalTypeAndValue(Val0) ||
2342 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2343 ParseGlobalTypeAndValue(Val1) ||
2344 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2346 if (Val0->getType() != Val1->getType())
2347 return Error(ID.Loc, "operands of constexpr must have same type");
2348 if (!Val0->getType()->isIntOrIntVectorTy()) {
2350 return Error(ModifierLoc, "nuw only applies to integer operations");
2352 return Error(ModifierLoc, "nsw only applies to integer operations");
2354 // Check that the type is valid for the operator.
2356 case Instruction::Add:
2357 case Instruction::Sub:
2358 case Instruction::Mul:
2359 case Instruction::UDiv:
2360 case Instruction::SDiv:
2361 case Instruction::URem:
2362 case Instruction::SRem:
2363 if (!Val0->getType()->isIntOrIntVectorTy())
2364 return Error(ID.Loc, "constexpr requires integer operands");
2366 case Instruction::FAdd:
2367 case Instruction::FSub:
2368 case Instruction::FMul:
2369 case Instruction::FDiv:
2370 case Instruction::FRem:
2371 if (!Val0->getType()->isFPOrFPVectorTy())
2372 return Error(ID.Loc, "constexpr requires fp operands");
2374 default: llvm_unreachable("Unknown binary operator!");
2377 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2378 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2379 if (Exact) Flags |= SDivOperator::IsExact;
2380 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2382 ID.Kind = ValID::t_Constant;
2386 // Logical Operations
2388 case lltok::kw_lshr:
2389 case lltok::kw_ashr:
2392 case lltok::kw_xor: {
2393 unsigned Opc = Lex.getUIntVal();
2394 Constant *Val0, *Val1;
2396 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2397 ParseGlobalTypeAndValue(Val0) ||
2398 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2399 ParseGlobalTypeAndValue(Val1) ||
2400 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2402 if (Val0->getType() != Val1->getType())
2403 return Error(ID.Loc, "operands of constexpr must have same type");
2404 if (!Val0->getType()->isIntOrIntVectorTy())
2405 return Error(ID.Loc,
2406 "constexpr requires integer or integer vector operands");
2407 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2408 ID.Kind = ValID::t_Constant;
2412 case lltok::kw_getelementptr:
2413 case lltok::kw_shufflevector:
2414 case lltok::kw_insertelement:
2415 case lltok::kw_extractelement:
2416 case lltok::kw_select: {
2417 unsigned Opc = Lex.getUIntVal();
2418 SmallVector<Constant*, 16> Elts;
2419 bool InBounds = false;
2421 if (Opc == Instruction::GetElementPtr)
2422 InBounds = EatIfPresent(lltok::kw_inbounds);
2423 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2424 ParseGlobalValueVector(Elts) ||
2425 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2428 if (Opc == Instruction::GetElementPtr) {
2429 if (Elts.size() == 0 || !Elts[0]->getType()->isPointerTy())
2430 return Error(ID.Loc, "getelementptr requires pointer operand");
2432 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2433 (Value**)(Elts.data() + 1),
2435 return Error(ID.Loc, "invalid indices for getelementptr");
2436 ID.ConstantVal = InBounds ?
2437 ConstantExpr::getInBoundsGetElementPtr(Elts[0],
2440 ConstantExpr::getGetElementPtr(Elts[0],
2441 Elts.data() + 1, Elts.size() - 1);
2442 } else if (Opc == Instruction::Select) {
2443 if (Elts.size() != 3)
2444 return Error(ID.Loc, "expected three operands to select");
2445 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2447 return Error(ID.Loc, Reason);
2448 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2449 } else if (Opc == Instruction::ShuffleVector) {
2450 if (Elts.size() != 3)
2451 return Error(ID.Loc, "expected three operands to shufflevector");
2452 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2453 return Error(ID.Loc, "invalid operands to shufflevector");
2455 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2456 } else if (Opc == Instruction::ExtractElement) {
2457 if (Elts.size() != 2)
2458 return Error(ID.Loc, "expected two operands to extractelement");
2459 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2460 return Error(ID.Loc, "invalid extractelement operands");
2461 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2463 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2464 if (Elts.size() != 3)
2465 return Error(ID.Loc, "expected three operands to insertelement");
2466 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2467 return Error(ID.Loc, "invalid insertelement operands");
2469 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2472 ID.Kind = ValID::t_Constant;
2481 /// ParseGlobalValue - Parse a global value with the specified type.
2482 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&C) {
2486 bool Parsed = ParseValID(ID) ||
2487 ConvertValIDToValue(Ty, ID, V, NULL);
2488 if (V && !(C = dyn_cast<Constant>(V)))
2489 return Error(ID.Loc, "global values must be constants");
2493 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2494 PATypeHolder Type(Type::getVoidTy(Context));
2495 return ParseType(Type) ||
2496 ParseGlobalValue(Type, V);
2499 /// ParseGlobalValueVector
2501 /// ::= TypeAndValue (',' TypeAndValue)*
2502 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2504 if (Lex.getKind() == lltok::rbrace ||
2505 Lex.getKind() == lltok::rsquare ||
2506 Lex.getKind() == lltok::greater ||
2507 Lex.getKind() == lltok::rparen)
2511 if (ParseGlobalTypeAndValue(C)) return true;
2514 while (EatIfPresent(lltok::comma)) {
2515 if (ParseGlobalTypeAndValue(C)) return true;
2523 //===----------------------------------------------------------------------===//
2524 // Function Parsing.
2525 //===----------------------------------------------------------------------===//
2527 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2528 PerFunctionState *PFS) {
2529 if (Ty->isFunctionTy())
2530 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2533 default: llvm_unreachable("Unknown ValID!");
2534 case ValID::t_LocalID:
2535 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2536 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2538 case ValID::t_LocalName:
2539 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2540 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2542 case ValID::t_InlineAsm: {
2543 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2544 const FunctionType *FTy =
2545 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2546 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2547 return Error(ID.Loc, "invalid type for inline asm constraint string");
2548 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2551 case ValID::t_MDNode:
2552 if (!Ty->isMetadataTy())
2553 return Error(ID.Loc, "metadata value must have metadata type");
2556 case ValID::t_MDString:
2557 if (!Ty->isMetadataTy())
2558 return Error(ID.Loc, "metadata value must have metadata type");
2561 case ValID::t_GlobalName:
2562 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2564 case ValID::t_GlobalID:
2565 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2567 case ValID::t_APSInt:
2568 if (!Ty->isIntegerTy())
2569 return Error(ID.Loc, "integer constant must have integer type");
2570 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2571 V = ConstantInt::get(Context, ID.APSIntVal);
2573 case ValID::t_APFloat:
2574 if (!Ty->isFloatingPointTy() ||
2575 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2576 return Error(ID.Loc, "floating point constant invalid for type");
2578 // The lexer has no type info, so builds all float and double FP constants
2579 // as double. Fix this here. Long double does not need this.
2580 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2583 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2586 V = ConstantFP::get(Context, ID.APFloatVal);
2588 if (V->getType() != Ty)
2589 return Error(ID.Loc, "floating point constant does not have type '" +
2590 Ty->getDescription() + "'");
2594 if (!Ty->isPointerTy())
2595 return Error(ID.Loc, "null must be a pointer type");
2596 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2598 case ValID::t_Undef:
2599 // FIXME: LabelTy should not be a first-class type.
2600 if ((!Ty->isFirstClassType() || Ty->isLabelTy()) &&
2602 return Error(ID.Loc, "invalid type for undef constant");
2603 V = UndefValue::get(Ty);
2605 case ValID::t_EmptyArray:
2606 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2607 return Error(ID.Loc, "invalid empty array initializer");
2608 V = UndefValue::get(Ty);
2611 // FIXME: LabelTy should not be a first-class type.
2612 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2613 return Error(ID.Loc, "invalid type for null constant");
2614 V = Constant::getNullValue(Ty);
2616 case ValID::t_Constant:
2617 if (ID.ConstantVal->getType() != Ty) {
2618 // Allow a constant struct with a single member to be converted
2619 // to a union, if the union has a member which is the same type
2620 // as the struct member.
2621 if (const UnionType* utype = dyn_cast<UnionType>(Ty)) {
2622 return ParseUnionValue(utype, ID, V);
2625 return Error(ID.Loc, "constant expression type mismatch");
2633 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2636 return ParseValID(ID, &PFS) ||
2637 ConvertValIDToValue(Ty, ID, V, &PFS);
2640 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2641 PATypeHolder T(Type::getVoidTy(Context));
2642 return ParseType(T) ||
2643 ParseValue(T, V, PFS);
2646 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2647 PerFunctionState &PFS) {
2650 if (ParseTypeAndValue(V, PFS)) return true;
2651 if (!isa<BasicBlock>(V))
2652 return Error(Loc, "expected a basic block");
2653 BB = cast<BasicBlock>(V);
2657 bool LLParser::ParseUnionValue(const UnionType* utype, ValID &ID, Value *&V) {
2658 if (const StructType* stype = dyn_cast<StructType>(ID.ConstantVal->getType())) {
2659 if (stype->getNumContainedTypes() != 1)
2660 return Error(ID.Loc, "constant expression type mismatch");
2661 int index = utype->getElementTypeIndex(stype->getContainedType(0));
2663 return Error(ID.Loc, "initializer type is not a member of the union");
2665 V = ConstantUnion::get(
2666 utype, cast<Constant>(ID.ConstantVal->getOperand(0)));
2670 return Error(ID.Loc, "constant expression type mismatch");
2675 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2676 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2677 /// OptionalAlign OptGC
2678 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2679 // Parse the linkage.
2680 LocTy LinkageLoc = Lex.getLoc();
2683 unsigned Visibility, RetAttrs;
2685 PATypeHolder RetType(Type::getVoidTy(Context));
2686 LocTy RetTypeLoc = Lex.getLoc();
2687 if (ParseOptionalLinkage(Linkage) ||
2688 ParseOptionalVisibility(Visibility) ||
2689 ParseOptionalCallingConv(CC) ||
2690 ParseOptionalAttrs(RetAttrs, 1) ||
2691 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2694 // Verify that the linkage is ok.
2695 switch ((GlobalValue::LinkageTypes)Linkage) {
2696 case GlobalValue::ExternalLinkage:
2697 break; // always ok.
2698 case GlobalValue::DLLImportLinkage:
2699 case GlobalValue::ExternalWeakLinkage:
2701 return Error(LinkageLoc, "invalid linkage for function definition");
2703 case GlobalValue::PrivateLinkage:
2704 case GlobalValue::LinkerPrivateLinkage:
2705 case GlobalValue::InternalLinkage:
2706 case GlobalValue::AvailableExternallyLinkage:
2707 case GlobalValue::LinkOnceAnyLinkage:
2708 case GlobalValue::LinkOnceODRLinkage:
2709 case GlobalValue::WeakAnyLinkage:
2710 case GlobalValue::WeakODRLinkage:
2711 case GlobalValue::DLLExportLinkage:
2713 return Error(LinkageLoc, "invalid linkage for function declaration");
2715 case GlobalValue::AppendingLinkage:
2716 case GlobalValue::CommonLinkage:
2717 return Error(LinkageLoc, "invalid function linkage type");
2720 if (!FunctionType::isValidReturnType(RetType) ||
2721 RetType->isOpaqueTy())
2722 return Error(RetTypeLoc, "invalid function return type");
2724 LocTy NameLoc = Lex.getLoc();
2726 std::string FunctionName;
2727 if (Lex.getKind() == lltok::GlobalVar) {
2728 FunctionName = Lex.getStrVal();
2729 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2730 unsigned NameID = Lex.getUIntVal();
2732 if (NameID != NumberedVals.size())
2733 return TokError("function expected to be numbered '%" +
2734 utostr(NumberedVals.size()) + "'");
2736 return TokError("expected function name");
2741 if (Lex.getKind() != lltok::lparen)
2742 return TokError("expected '(' in function argument list");
2744 std::vector<ArgInfo> ArgList;
2747 std::string Section;
2751 if (ParseArgumentList(ArgList, isVarArg, false) ||
2752 ParseOptionalAttrs(FuncAttrs, 2) ||
2753 (EatIfPresent(lltok::kw_section) &&
2754 ParseStringConstant(Section)) ||
2755 ParseOptionalAlignment(Alignment) ||
2756 (EatIfPresent(lltok::kw_gc) &&
2757 ParseStringConstant(GC)))
2760 // If the alignment was parsed as an attribute, move to the alignment field.
2761 if (FuncAttrs & Attribute::Alignment) {
2762 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2763 FuncAttrs &= ~Attribute::Alignment;
2766 // Okay, if we got here, the function is syntactically valid. Convert types
2767 // and do semantic checks.
2768 std::vector<const Type*> ParamTypeList;
2769 SmallVector<AttributeWithIndex, 8> Attrs;
2770 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2772 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2773 if (FuncAttrs & ObsoleteFuncAttrs) {
2774 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2775 FuncAttrs &= ~ObsoleteFuncAttrs;
2778 if (RetAttrs != Attribute::None)
2779 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2781 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2782 ParamTypeList.push_back(ArgList[i].Type);
2783 if (ArgList[i].Attrs != Attribute::None)
2784 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2787 if (FuncAttrs != Attribute::None)
2788 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2790 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2792 if (PAL.paramHasAttr(1, Attribute::StructRet) && !RetType->isVoidTy())
2793 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2795 const FunctionType *FT =
2796 FunctionType::get(RetType, ParamTypeList, isVarArg);
2797 const PointerType *PFT = PointerType::getUnqual(FT);
2800 if (!FunctionName.empty()) {
2801 // If this was a definition of a forward reference, remove the definition
2802 // from the forward reference table and fill in the forward ref.
2803 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2804 ForwardRefVals.find(FunctionName);
2805 if (FRVI != ForwardRefVals.end()) {
2806 Fn = M->getFunction(FunctionName);
2807 if (Fn->getType() != PFT)
2808 return Error(FRVI->second.second, "invalid forward reference to "
2809 "function '" + FunctionName + "' with wrong type!");
2811 ForwardRefVals.erase(FRVI);
2812 } else if ((Fn = M->getFunction(FunctionName))) {
2813 // If this function already exists in the symbol table, then it is
2814 // multiply defined. We accept a few cases for old backwards compat.
2815 // FIXME: Remove this stuff for LLVM 3.0.
2816 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2817 (!Fn->isDeclaration() && isDefine)) {
2818 // If the redefinition has different type or different attributes,
2819 // reject it. If both have bodies, reject it.
2820 return Error(NameLoc, "invalid redefinition of function '" +
2821 FunctionName + "'");
2822 } else if (Fn->isDeclaration()) {
2823 // Make sure to strip off any argument names so we can't get conflicts.
2824 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2828 } else if (M->getNamedValue(FunctionName)) {
2829 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2833 // If this is a definition of a forward referenced function, make sure the
2835 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2836 = ForwardRefValIDs.find(NumberedVals.size());
2837 if (I != ForwardRefValIDs.end()) {
2838 Fn = cast<Function>(I->second.first);
2839 if (Fn->getType() != PFT)
2840 return Error(NameLoc, "type of definition and forward reference of '@" +
2841 utostr(NumberedVals.size()) +"' disagree");
2842 ForwardRefValIDs.erase(I);
2847 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2848 else // Move the forward-reference to the correct spot in the module.
2849 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2851 if (FunctionName.empty())
2852 NumberedVals.push_back(Fn);
2854 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2855 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2856 Fn->setCallingConv(CC);
2857 Fn->setAttributes(PAL);
2858 Fn->setAlignment(Alignment);
2859 Fn->setSection(Section);
2860 if (!GC.empty()) Fn->setGC(GC.c_str());
2862 // Add all of the arguments we parsed to the function.
2863 Function::arg_iterator ArgIt = Fn->arg_begin();
2864 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2865 // If we run out of arguments in the Function prototype, exit early.
2866 // FIXME: REMOVE THIS IN LLVM 3.0, this is just for the mismatch case above.
2867 if (ArgIt == Fn->arg_end()) break;
2869 // If the argument has a name, insert it into the argument symbol table.
2870 if (ArgList[i].Name.empty()) continue;
2872 // Set the name, if it conflicted, it will be auto-renamed.
2873 ArgIt->setName(ArgList[i].Name);
2875 if (ArgIt->getNameStr() != ArgList[i].Name)
2876 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2877 ArgList[i].Name + "'");
2884 /// ParseFunctionBody
2885 /// ::= '{' BasicBlock+ '}'
2886 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2888 bool LLParser::ParseFunctionBody(Function &Fn) {
2889 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2890 return TokError("expected '{' in function body");
2891 Lex.Lex(); // eat the {.
2893 int FunctionNumber = -1;
2894 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2896 PerFunctionState PFS(*this, Fn, FunctionNumber);
2898 // We need at least one basic block.
2899 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_end)
2900 return TokError("function body requires at least one basic block");
2902 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2903 if (ParseBasicBlock(PFS)) return true;
2908 // Verify function is ok.
2909 return PFS.FinishFunction();
2913 /// ::= LabelStr? Instruction*
2914 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2915 // If this basic block starts out with a name, remember it.
2917 LocTy NameLoc = Lex.getLoc();
2918 if (Lex.getKind() == lltok::LabelStr) {
2919 Name = Lex.getStrVal();
2923 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2924 if (BB == 0) return true;
2926 std::string NameStr;
2928 // Parse the instructions in this block until we get a terminator.
2930 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2932 // This instruction may have three possibilities for a name: a) none
2933 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2934 LocTy NameLoc = Lex.getLoc();
2938 if (Lex.getKind() == lltok::LocalVarID) {
2939 NameID = Lex.getUIntVal();
2941 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2943 } else if (Lex.getKind() == lltok::LocalVar ||
2944 // FIXME: REMOVE IN LLVM 3.0
2945 Lex.getKind() == lltok::StringConstant) {
2946 NameStr = Lex.getStrVal();
2948 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2952 switch (ParseInstruction(Inst, BB, PFS)) {
2953 default: assert(0 && "Unknown ParseInstruction result!");
2954 case InstError: return true;
2956 BB->getInstList().push_back(Inst);
2958 // With a normal result, we check to see if the instruction is followed by
2959 // a comma and metadata.
2960 if (EatIfPresent(lltok::comma))
2961 if (ParseInstructionMetadata(Inst))
2964 case InstExtraComma:
2965 BB->getInstList().push_back(Inst);
2967 // If the instruction parser ate an extra comma at the end of it, it
2968 // *must* be followed by metadata.
2969 if (ParseInstructionMetadata(Inst))
2974 // Set the name on the instruction.
2975 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2976 } while (!isa<TerminatorInst>(Inst));
2981 //===----------------------------------------------------------------------===//
2982 // Instruction Parsing.
2983 //===----------------------------------------------------------------------===//
2985 /// ParseInstruction - Parse one of the many different instructions.
2987 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2988 PerFunctionState &PFS) {
2989 lltok::Kind Token = Lex.getKind();
2990 if (Token == lltok::Eof)
2991 return TokError("found end of file when expecting more instructions");
2992 LocTy Loc = Lex.getLoc();
2993 unsigned KeywordVal = Lex.getUIntVal();
2994 Lex.Lex(); // Eat the keyword.
2997 default: return Error(Loc, "expected instruction opcode");
2998 // Terminator Instructions.
2999 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
3000 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3001 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3002 case lltok::kw_br: return ParseBr(Inst, PFS);
3003 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3004 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3005 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3006 // Binary Operators.
3009 case lltok::kw_mul: {
3012 LocTy ModifierLoc = Lex.getLoc();
3013 if (EatIfPresent(lltok::kw_nuw))
3015 if (EatIfPresent(lltok::kw_nsw)) {
3017 if (EatIfPresent(lltok::kw_nuw))
3020 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3022 if (!Inst->getType()->isIntOrIntVectorTy()) {
3024 return Error(ModifierLoc, "nuw only applies to integer operations");
3026 return Error(ModifierLoc, "nsw only applies to integer operations");
3029 cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3031 cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3035 case lltok::kw_fadd:
3036 case lltok::kw_fsub:
3037 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3039 case lltok::kw_sdiv: {
3041 if (EatIfPresent(lltok::kw_exact))
3043 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3046 cast<BinaryOperator>(Inst)->setIsExact(true);
3050 case lltok::kw_udiv:
3051 case lltok::kw_urem:
3052 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3053 case lltok::kw_fdiv:
3054 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3056 case lltok::kw_lshr:
3057 case lltok::kw_ashr:
3060 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3061 case lltok::kw_icmp:
3062 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3064 case lltok::kw_trunc:
3065 case lltok::kw_zext:
3066 case lltok::kw_sext:
3067 case lltok::kw_fptrunc:
3068 case lltok::kw_fpext:
3069 case lltok::kw_bitcast:
3070 case lltok::kw_uitofp:
3071 case lltok::kw_sitofp:
3072 case lltok::kw_fptoui:
3073 case lltok::kw_fptosi:
3074 case lltok::kw_inttoptr:
3075 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3077 case lltok::kw_select: return ParseSelect(Inst, PFS);
3078 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3079 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3080 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3081 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3082 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3083 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3084 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3086 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3087 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, BB, false);
3088 case lltok::kw_free: return ParseFree(Inst, PFS, BB);
3089 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
3090 case lltok::kw_store: return ParseStore(Inst, PFS, false);
3091 case lltok::kw_volatile:
3092 if (EatIfPresent(lltok::kw_load))
3093 return ParseLoad(Inst, PFS, true);
3094 else if (EatIfPresent(lltok::kw_store))
3095 return ParseStore(Inst, PFS, true);
3097 return TokError("expected 'load' or 'store'");
3098 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
3099 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3100 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3101 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3105 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3106 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3107 if (Opc == Instruction::FCmp) {
3108 switch (Lex.getKind()) {
3109 default: TokError("expected fcmp predicate (e.g. 'oeq')");
3110 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3111 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3112 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3113 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3114 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3115 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3116 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3117 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3118 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3119 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3120 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3121 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3122 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3123 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3124 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3125 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3128 switch (Lex.getKind()) {
3129 default: TokError("expected icmp predicate (e.g. 'eq')");
3130 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3131 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3132 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3133 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3134 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3135 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3136 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3137 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3138 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3139 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3146 //===----------------------------------------------------------------------===//
3147 // Terminator Instructions.
3148 //===----------------------------------------------------------------------===//
3150 /// ParseRet - Parse a return instruction.
3151 /// ::= 'ret' void (',' !dbg, !1)*
3152 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3153 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ (',' !dbg, !1)*
3154 /// [[obsolete: LLVM 3.0]]
3155 int LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3156 PerFunctionState &PFS) {
3157 PATypeHolder Ty(Type::getVoidTy(Context));
3158 if (ParseType(Ty, true /*void allowed*/)) return true;
3160 if (Ty->isVoidTy()) {
3161 Inst = ReturnInst::Create(Context);
3166 if (ParseValue(Ty, RV, PFS)) return true;
3168 bool ExtraComma = false;
3169 if (EatIfPresent(lltok::comma)) {
3170 // Parse optional custom metadata, e.g. !dbg
3171 if (Lex.getKind() == lltok::MetadataVar) {
3174 // The normal case is one return value.
3175 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring
3176 // use of 'ret {i32,i32} {i32 1, i32 2}'
3177 SmallVector<Value*, 8> RVs;
3181 // If optional custom metadata, e.g. !dbg is seen then this is the
3183 if (Lex.getKind() == lltok::MetadataVar)
3185 if (ParseTypeAndValue(RV, PFS)) return true;
3187 } while (EatIfPresent(lltok::comma));
3189 RV = UndefValue::get(PFS.getFunction().getReturnType());
3190 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
3191 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
3192 BB->getInstList().push_back(I);
3198 Inst = ReturnInst::Create(Context, RV);
3199 return ExtraComma ? InstExtraComma : InstNormal;
3204 /// ::= 'br' TypeAndValue
3205 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3206 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3209 BasicBlock *Op1, *Op2;
3210 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3212 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3213 Inst = BranchInst::Create(BB);
3217 if (Op0->getType() != Type::getInt1Ty(Context))
3218 return Error(Loc, "branch condition must have 'i1' type");
3220 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3221 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3222 ParseToken(lltok::comma, "expected ',' after true destination") ||
3223 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3226 Inst = BranchInst::Create(Op1, Op2, Op0);
3232 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3234 /// ::= (TypeAndValue ',' TypeAndValue)*
3235 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3236 LocTy CondLoc, BBLoc;
3238 BasicBlock *DefaultBB;
3239 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3240 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3241 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3242 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3245 if (!Cond->getType()->isIntegerTy())
3246 return Error(CondLoc, "switch condition must have integer type");
3248 // Parse the jump table pairs.
3249 SmallPtrSet<Value*, 32> SeenCases;
3250 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3251 while (Lex.getKind() != lltok::rsquare) {
3255 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3256 ParseToken(lltok::comma, "expected ',' after case value") ||
3257 ParseTypeAndBasicBlock(DestBB, PFS))
3260 if (!SeenCases.insert(Constant))
3261 return Error(CondLoc, "duplicate case value in switch");
3262 if (!isa<ConstantInt>(Constant))
3263 return Error(CondLoc, "case value is not a constant integer");
3265 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3268 Lex.Lex(); // Eat the ']'.
3270 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3271 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3272 SI->addCase(Table[i].first, Table[i].second);
3279 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3280 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3283 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3284 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3285 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3288 if (!Address->getType()->isPointerTy())
3289 return Error(AddrLoc, "indirectbr address must have pointer type");
3291 // Parse the destination list.
3292 SmallVector<BasicBlock*, 16> DestList;
3294 if (Lex.getKind() != lltok::rsquare) {
3296 if (ParseTypeAndBasicBlock(DestBB, PFS))
3298 DestList.push_back(DestBB);
3300 while (EatIfPresent(lltok::comma)) {
3301 if (ParseTypeAndBasicBlock(DestBB, PFS))
3303 DestList.push_back(DestBB);
3307 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3310 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3311 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3312 IBI->addDestination(DestList[i]);
3319 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3320 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3321 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3322 LocTy CallLoc = Lex.getLoc();
3323 unsigned RetAttrs, FnAttrs;
3325 PATypeHolder RetType(Type::getVoidTy(Context));
3328 SmallVector<ParamInfo, 16> ArgList;
3330 BasicBlock *NormalBB, *UnwindBB;
3331 if (ParseOptionalCallingConv(CC) ||
3332 ParseOptionalAttrs(RetAttrs, 1) ||
3333 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3334 ParseValID(CalleeID) ||
3335 ParseParameterList(ArgList, PFS) ||
3336 ParseOptionalAttrs(FnAttrs, 2) ||
3337 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3338 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3339 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3340 ParseTypeAndBasicBlock(UnwindBB, PFS))
3343 // If RetType is a non-function pointer type, then this is the short syntax
3344 // for the call, which means that RetType is just the return type. Infer the
3345 // rest of the function argument types from the arguments that are present.
3346 const PointerType *PFTy = 0;
3347 const FunctionType *Ty = 0;
3348 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3349 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3350 // Pull out the types of all of the arguments...
3351 std::vector<const Type*> ParamTypes;
3352 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3353 ParamTypes.push_back(ArgList[i].V->getType());
3355 if (!FunctionType::isValidReturnType(RetType))
3356 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3358 Ty = FunctionType::get(RetType, ParamTypes, false);
3359 PFTy = PointerType::getUnqual(Ty);
3362 // Look up the callee.
3364 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3366 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3367 // function attributes.
3368 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3369 if (FnAttrs & ObsoleteFuncAttrs) {
3370 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3371 FnAttrs &= ~ObsoleteFuncAttrs;
3374 // Set up the Attributes for the function.
3375 SmallVector<AttributeWithIndex, 8> Attrs;
3376 if (RetAttrs != Attribute::None)
3377 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3379 SmallVector<Value*, 8> Args;
3381 // Loop through FunctionType's arguments and ensure they are specified
3382 // correctly. Also, gather any parameter attributes.
3383 FunctionType::param_iterator I = Ty->param_begin();
3384 FunctionType::param_iterator E = Ty->param_end();
3385 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3386 const Type *ExpectedTy = 0;
3389 } else if (!Ty->isVarArg()) {
3390 return Error(ArgList[i].Loc, "too many arguments specified");
3393 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3394 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3395 ExpectedTy->getDescription() + "'");
3396 Args.push_back(ArgList[i].V);
3397 if (ArgList[i].Attrs != Attribute::None)
3398 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3402 return Error(CallLoc, "not enough parameters specified for call");
3404 if (FnAttrs != Attribute::None)
3405 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3407 // Finish off the Attributes and check them
3408 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3410 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB,
3411 Args.begin(), Args.end());
3412 II->setCallingConv(CC);
3413 II->setAttributes(PAL);
3420 //===----------------------------------------------------------------------===//
3421 // Binary Operators.
3422 //===----------------------------------------------------------------------===//
3425 /// ::= ArithmeticOps TypeAndValue ',' Value
3427 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3428 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3429 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3430 unsigned Opc, unsigned OperandType) {
3431 LocTy Loc; Value *LHS, *RHS;
3432 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3433 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3434 ParseValue(LHS->getType(), RHS, PFS))
3438 switch (OperandType) {
3439 default: llvm_unreachable("Unknown operand type!");
3440 case 0: // int or FP.
3441 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3442 LHS->getType()->isFPOrFPVectorTy();
3444 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3445 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3449 return Error(Loc, "invalid operand type for instruction");
3451 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3456 /// ::= ArithmeticOps TypeAndValue ',' Value {
3457 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3459 LocTy Loc; Value *LHS, *RHS;
3460 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3461 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3462 ParseValue(LHS->getType(), RHS, PFS))
3465 if (!LHS->getType()->isIntOrIntVectorTy())
3466 return Error(Loc,"instruction requires integer or integer vector operands");
3468 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3474 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3475 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3476 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3478 // Parse the integer/fp comparison predicate.
3482 if (ParseCmpPredicate(Pred, Opc) ||
3483 ParseTypeAndValue(LHS, Loc, PFS) ||
3484 ParseToken(lltok::comma, "expected ',' after compare value") ||
3485 ParseValue(LHS->getType(), RHS, PFS))
3488 if (Opc == Instruction::FCmp) {
3489 if (!LHS->getType()->isFPOrFPVectorTy())
3490 return Error(Loc, "fcmp requires floating point operands");
3491 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3493 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3494 if (!LHS->getType()->isIntOrIntVectorTy() &&
3495 !LHS->getType()->isPointerTy())
3496 return Error(Loc, "icmp requires integer operands");
3497 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3502 //===----------------------------------------------------------------------===//
3503 // Other Instructions.
3504 //===----------------------------------------------------------------------===//
3508 /// ::= CastOpc TypeAndValue 'to' Type
3509 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3511 LocTy Loc; Value *Op;
3512 PATypeHolder DestTy(Type::getVoidTy(Context));
3513 if (ParseTypeAndValue(Op, Loc, PFS) ||
3514 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3518 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3519 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3520 return Error(Loc, "invalid cast opcode for cast from '" +
3521 Op->getType()->getDescription() + "' to '" +
3522 DestTy->getDescription() + "'");
3524 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3529 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3530 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3532 Value *Op0, *Op1, *Op2;
3533 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3534 ParseToken(lltok::comma, "expected ',' after select condition") ||
3535 ParseTypeAndValue(Op1, PFS) ||
3536 ParseToken(lltok::comma, "expected ',' after select value") ||
3537 ParseTypeAndValue(Op2, PFS))
3540 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3541 return Error(Loc, Reason);
3543 Inst = SelectInst::Create(Op0, Op1, Op2);
3548 /// ::= 'va_arg' TypeAndValue ',' Type
3549 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3551 PATypeHolder EltTy(Type::getVoidTy(Context));
3553 if (ParseTypeAndValue(Op, PFS) ||
3554 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3555 ParseType(EltTy, TypeLoc))
3558 if (!EltTy->isFirstClassType())
3559 return Error(TypeLoc, "va_arg requires operand with first class type");
3561 Inst = new VAArgInst(Op, EltTy);
3565 /// ParseExtractElement
3566 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3567 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3570 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3571 ParseToken(lltok::comma, "expected ',' after extract value") ||
3572 ParseTypeAndValue(Op1, PFS))
3575 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3576 return Error(Loc, "invalid extractelement operands");
3578 Inst = ExtractElementInst::Create(Op0, Op1);
3582 /// ParseInsertElement
3583 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3584 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3586 Value *Op0, *Op1, *Op2;
3587 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3588 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3589 ParseTypeAndValue(Op1, PFS) ||
3590 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3591 ParseTypeAndValue(Op2, PFS))
3594 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3595 return Error(Loc, "invalid insertelement operands");
3597 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3601 /// ParseShuffleVector
3602 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3603 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3605 Value *Op0, *Op1, *Op2;
3606 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3607 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3608 ParseTypeAndValue(Op1, PFS) ||
3609 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3610 ParseTypeAndValue(Op2, PFS))
3613 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3614 return Error(Loc, "invalid extractelement operands");
3616 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3621 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3622 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3623 PATypeHolder Ty(Type::getVoidTy(Context));
3625 LocTy TypeLoc = Lex.getLoc();
3627 if (ParseType(Ty) ||
3628 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3629 ParseValue(Ty, Op0, PFS) ||
3630 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3631 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3632 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3635 bool AteExtraComma = false;
3636 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3638 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3640 if (!EatIfPresent(lltok::comma))
3643 if (Lex.getKind() == lltok::MetadataVar) {
3644 AteExtraComma = true;
3648 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3649 ParseValue(Ty, Op0, PFS) ||
3650 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3651 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3652 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3656 if (!Ty->isFirstClassType())
3657 return Error(TypeLoc, "phi node must have first class type");
3659 PHINode *PN = PHINode::Create(Ty);
3660 PN->reserveOperandSpace(PHIVals.size());
3661 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3662 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3664 return AteExtraComma ? InstExtraComma : InstNormal;
3668 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3669 /// ParameterList OptionalAttrs
3670 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3672 unsigned RetAttrs, FnAttrs;
3674 PATypeHolder RetType(Type::getVoidTy(Context));
3677 SmallVector<ParamInfo, 16> ArgList;
3678 LocTy CallLoc = Lex.getLoc();
3680 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3681 ParseOptionalCallingConv(CC) ||
3682 ParseOptionalAttrs(RetAttrs, 1) ||
3683 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3684 ParseValID(CalleeID) ||
3685 ParseParameterList(ArgList, PFS) ||
3686 ParseOptionalAttrs(FnAttrs, 2))
3689 // If RetType is a non-function pointer type, then this is the short syntax
3690 // for the call, which means that RetType is just the return type. Infer the
3691 // rest of the function argument types from the arguments that are present.
3692 const PointerType *PFTy = 0;
3693 const FunctionType *Ty = 0;
3694 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3695 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3696 // Pull out the types of all of the arguments...
3697 std::vector<const Type*> ParamTypes;
3698 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3699 ParamTypes.push_back(ArgList[i].V->getType());
3701 if (!FunctionType::isValidReturnType(RetType))
3702 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3704 Ty = FunctionType::get(RetType, ParamTypes, false);
3705 PFTy = PointerType::getUnqual(Ty);
3708 // Look up the callee.
3710 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3712 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3713 // function attributes.
3714 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3715 if (FnAttrs & ObsoleteFuncAttrs) {
3716 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3717 FnAttrs &= ~ObsoleteFuncAttrs;
3720 // Set up the Attributes for the function.
3721 SmallVector<AttributeWithIndex, 8> Attrs;
3722 if (RetAttrs != Attribute::None)
3723 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3725 SmallVector<Value*, 8> Args;
3727 // Loop through FunctionType's arguments and ensure they are specified
3728 // correctly. Also, gather any parameter attributes.
3729 FunctionType::param_iterator I = Ty->param_begin();
3730 FunctionType::param_iterator E = Ty->param_end();
3731 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3732 const Type *ExpectedTy = 0;
3735 } else if (!Ty->isVarArg()) {
3736 return Error(ArgList[i].Loc, "too many arguments specified");
3739 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3740 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3741 ExpectedTy->getDescription() + "'");
3742 Args.push_back(ArgList[i].V);
3743 if (ArgList[i].Attrs != Attribute::None)
3744 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3748 return Error(CallLoc, "not enough parameters specified for call");
3750 if (FnAttrs != Attribute::None)
3751 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3753 // Finish off the Attributes and check them
3754 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3756 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3757 CI->setTailCall(isTail);
3758 CI->setCallingConv(CC);
3759 CI->setAttributes(PAL);
3764 //===----------------------------------------------------------------------===//
3765 // Memory Instructions.
3766 //===----------------------------------------------------------------------===//
3769 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalInfo)?
3770 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3771 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3772 BasicBlock* BB, bool isAlloca) {
3773 PATypeHolder Ty(Type::getVoidTy(Context));
3776 unsigned Alignment = 0;
3777 if (ParseType(Ty)) return true;
3779 bool AteExtraComma = false;
3780 if (EatIfPresent(lltok::comma)) {
3781 if (Lex.getKind() == lltok::kw_align) {
3782 if (ParseOptionalAlignment(Alignment)) return true;
3783 } else if (Lex.getKind() == lltok::MetadataVar) {
3784 AteExtraComma = true;
3786 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3787 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3792 if (Size && !Size->getType()->isIntegerTy(32))
3793 return Error(SizeLoc, "element count must be i32");
3796 Inst = new AllocaInst(Ty, Size, Alignment);
3797 return AteExtraComma ? InstExtraComma : InstNormal;
3800 // Autoupgrade old malloc instruction to malloc call.
3801 // FIXME: Remove in LLVM 3.0.
3802 const Type *IntPtrTy = Type::getInt32Ty(Context);
3803 Constant *AllocSize = ConstantExpr::getSizeOf(Ty);
3804 AllocSize = ConstantExpr::getTruncOrBitCast(AllocSize, IntPtrTy);
3806 // Prototype malloc as "void *(int32)".
3807 // This function is renamed as "malloc" in ValidateEndOfModule().
3808 MallocF = cast<Function>(
3809 M->getOrInsertFunction("", Type::getInt8PtrTy(Context), IntPtrTy, NULL));
3810 Inst = CallInst::CreateMalloc(BB, IntPtrTy, Ty, AllocSize, Size, MallocF);
3811 return AteExtraComma ? InstExtraComma : InstNormal;
3815 /// ::= 'free' TypeAndValue
3816 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS,
3818 Value *Val; LocTy Loc;
3819 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3820 if (!Val->getType()->isPointerTy())
3821 return Error(Loc, "operand to free must be a pointer");
3822 Inst = CallInst::CreateFree(Val, BB);
3827 /// ::= 'volatile'? 'load' TypeAndValue (',' OptionalInfo)?
3828 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3830 Value *Val; LocTy Loc;
3831 unsigned Alignment = 0;
3832 bool AteExtraComma = false;
3833 if (ParseTypeAndValue(Val, Loc, PFS) ||
3834 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3837 if (!Val->getType()->isPointerTy() ||
3838 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3839 return Error(Loc, "load operand must be a pointer to a first class type");
3841 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3842 return AteExtraComma ? InstExtraComma : InstNormal;
3846 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3847 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3849 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3850 unsigned Alignment = 0;
3851 bool AteExtraComma = false;
3852 if (ParseTypeAndValue(Val, Loc, PFS) ||
3853 ParseToken(lltok::comma, "expected ',' after store operand") ||
3854 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3855 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3858 if (!Ptr->getType()->isPointerTy())
3859 return Error(PtrLoc, "store operand must be a pointer");
3860 if (!Val->getType()->isFirstClassType())
3861 return Error(Loc, "store operand must be a first class value");
3862 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3863 return Error(Loc, "stored value and pointer type do not match");
3865 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3866 return AteExtraComma ? InstExtraComma : InstNormal;
3870 /// ::= 'getresult' TypeAndValue ',' i32
3871 /// FIXME: Remove support for getresult in LLVM 3.0
3872 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3873 Value *Val; LocTy ValLoc, EltLoc;
3875 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3876 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3877 ParseUInt32(Element, EltLoc))
3880 if (!Val->getType()->isStructTy() && !Val->getType()->isArrayTy())
3881 return Error(ValLoc, "getresult inst requires an aggregate operand");
3882 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3883 return Error(EltLoc, "invalid getresult index for value");
3884 Inst = ExtractValueInst::Create(Val, Element);
3888 /// ParseGetElementPtr
3889 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3890 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3891 Value *Ptr, *Val; LocTy Loc, EltLoc;
3893 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3895 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3897 if (!Ptr->getType()->isPointerTy())
3898 return Error(Loc, "base of getelementptr must be a pointer");
3900 SmallVector<Value*, 16> Indices;
3901 bool AteExtraComma = false;
3902 while (EatIfPresent(lltok::comma)) {
3903 if (Lex.getKind() == lltok::MetadataVar) {
3904 AteExtraComma = true;
3907 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3908 if (!Val->getType()->isIntegerTy())
3909 return Error(EltLoc, "getelementptr index must be an integer");
3910 Indices.push_back(Val);
3913 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3914 Indices.begin(), Indices.end()))
3915 return Error(Loc, "invalid getelementptr indices");
3916 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3918 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3919 return AteExtraComma ? InstExtraComma : InstNormal;
3922 /// ParseExtractValue
3923 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3924 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3925 Value *Val; LocTy Loc;
3926 SmallVector<unsigned, 4> Indices;
3928 if (ParseTypeAndValue(Val, Loc, PFS) ||
3929 ParseIndexList(Indices, AteExtraComma))
3932 if (!Val->getType()->isAggregateType())
3933 return Error(Loc, "extractvalue operand must be aggregate type");
3935 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3937 return Error(Loc, "invalid indices for extractvalue");
3938 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3939 return AteExtraComma ? InstExtraComma : InstNormal;
3942 /// ParseInsertValue
3943 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3944 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3945 Value *Val0, *Val1; LocTy Loc0, Loc1;
3946 SmallVector<unsigned, 4> Indices;
3948 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3949 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3950 ParseTypeAndValue(Val1, Loc1, PFS) ||
3951 ParseIndexList(Indices, AteExtraComma))
3954 if (!Val0->getType()->isAggregateType())
3955 return Error(Loc0, "insertvalue operand must be aggregate type");
3957 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3959 return Error(Loc0, "invalid indices for insertvalue");
3960 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3961 return AteExtraComma ? InstExtraComma : InstNormal;
3964 //===----------------------------------------------------------------------===//
3965 // Embedded metadata.
3966 //===----------------------------------------------------------------------===//
3968 /// ParseMDNodeVector
3969 /// ::= Element (',' Element)*
3971 /// ::= 'null' | TypeAndValue
3972 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
3973 PerFunctionState *PFS) {
3975 // Null is a special case since it is typeless.
3976 if (EatIfPresent(lltok::kw_null)) {
3982 PATypeHolder Ty(Type::getVoidTy(Context));
3984 if (ParseType(Ty) || ParseValID(ID, PFS) ||
3985 ConvertValIDToValue(Ty, ID, V, PFS))
3989 } while (EatIfPresent(lltok::comma));