1 //===-- LLParser.cpp - Parser Class ---------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the parser class for .ll files.
12 //===----------------------------------------------------------------------===//
15 #include "llvm/AutoUpgrade.h"
16 #include "llvm/CallingConv.h"
17 #include "llvm/Constants.h"
18 #include "llvm/DerivedTypes.h"
19 #include "llvm/InlineAsm.h"
20 #include "llvm/Instructions.h"
21 #include "llvm/Module.h"
22 #include "llvm/Operator.h"
23 #include "llvm/ValueSymbolTable.h"
24 #include "llvm/ADT/SmallPtrSet.h"
25 #include "llvm/ADT/StringExtras.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/Support/raw_ostream.h"
30 /// Run: module ::= toplevelentity*
31 bool LLParser::Run() {
35 return ParseTopLevelEntities() ||
36 ValidateEndOfModule();
39 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
41 bool LLParser::ValidateEndOfModule() {
42 // Handle any instruction metadata forward references.
43 if (!ForwardRefInstMetadata.empty()) {
44 for (DenseMap<Instruction*, std::vector<MDRef> >::iterator
45 I = ForwardRefInstMetadata.begin(), E = ForwardRefInstMetadata.end();
47 Instruction *Inst = I->first;
48 const std::vector<MDRef> &MDList = I->second;
50 for (unsigned i = 0, e = MDList.size(); i != e; ++i) {
51 unsigned SlotNo = MDList[i].MDSlot;
53 if (SlotNo >= NumberedMetadata.size() || NumberedMetadata[SlotNo] == 0)
54 return Error(MDList[i].Loc, "use of undefined metadata '!" +
55 utostr(SlotNo) + "'");
56 Inst->setMetadata(MDList[i].MDKind, NumberedMetadata[SlotNo]);
59 ForwardRefInstMetadata.clear();
63 // Update auto-upgraded malloc calls to "malloc".
64 // FIXME: Remove in LLVM 3.0.
66 MallocF->setName("malloc");
67 // If setName() does not set the name to "malloc", then there is already a
68 // declaration of "malloc". In that case, iterate over all calls to MallocF
69 // and get them to call the declared "malloc" instead.
70 if (MallocF->getName() != "malloc") {
71 Constant *RealMallocF = M->getFunction("malloc");
72 if (RealMallocF->getType() != MallocF->getType())
73 RealMallocF = ConstantExpr::getBitCast(RealMallocF, MallocF->getType());
74 MallocF->replaceAllUsesWith(RealMallocF);
75 MallocF->eraseFromParent();
81 // If there are entries in ForwardRefBlockAddresses at this point, they are
82 // references after the function was defined. Resolve those now.
83 while (!ForwardRefBlockAddresses.empty()) {
84 // Okay, we are referencing an already-parsed function, resolve them now.
86 const ValID &Fn = ForwardRefBlockAddresses.begin()->first;
87 if (Fn.Kind == ValID::t_GlobalName)
88 TheFn = M->getFunction(Fn.StrVal);
89 else if (Fn.UIntVal < NumberedVals.size())
90 TheFn = dyn_cast<Function>(NumberedVals[Fn.UIntVal]);
93 return Error(Fn.Loc, "unknown function referenced by blockaddress");
95 // Resolve all these references.
96 if (ResolveForwardRefBlockAddresses(TheFn,
97 ForwardRefBlockAddresses.begin()->second,
101 ForwardRefBlockAddresses.erase(ForwardRefBlockAddresses.begin());
105 if (!ForwardRefTypes.empty())
106 return Error(ForwardRefTypes.begin()->second.second,
107 "use of undefined type named '" +
108 ForwardRefTypes.begin()->first + "'");
109 if (!ForwardRefTypeIDs.empty())
110 return Error(ForwardRefTypeIDs.begin()->second.second,
111 "use of undefined type '%" +
112 utostr(ForwardRefTypeIDs.begin()->first) + "'");
114 if (!ForwardRefVals.empty())
115 return Error(ForwardRefVals.begin()->second.second,
116 "use of undefined value '@" + ForwardRefVals.begin()->first +
119 if (!ForwardRefValIDs.empty())
120 return Error(ForwardRefValIDs.begin()->second.second,
121 "use of undefined value '@" +
122 utostr(ForwardRefValIDs.begin()->first) + "'");
124 if (!ForwardRefMDNodes.empty())
125 return Error(ForwardRefMDNodes.begin()->second.second,
126 "use of undefined metadata '!" +
127 utostr(ForwardRefMDNodes.begin()->first) + "'");
130 // Look for intrinsic functions and CallInst that need to be upgraded
131 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
132 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
134 // Check debug info intrinsics.
135 CheckDebugInfoIntrinsics(M);
139 bool LLParser::ResolveForwardRefBlockAddresses(Function *TheFn,
140 std::vector<std::pair<ValID, GlobalValue*> > &Refs,
141 PerFunctionState *PFS) {
142 // Loop over all the references, resolving them.
143 for (unsigned i = 0, e = Refs.size(); i != e; ++i) {
146 if (Refs[i].first.Kind == ValID::t_LocalName)
147 Res = PFS->GetBB(Refs[i].first.StrVal, Refs[i].first.Loc);
149 Res = PFS->GetBB(Refs[i].first.UIntVal, Refs[i].first.Loc);
150 } else if (Refs[i].first.Kind == ValID::t_LocalID) {
151 return Error(Refs[i].first.Loc,
152 "cannot take address of numeric label after the function is defined");
154 Res = dyn_cast_or_null<BasicBlock>(
155 TheFn->getValueSymbolTable().lookup(Refs[i].first.StrVal));
159 return Error(Refs[i].first.Loc,
160 "referenced value is not a basic block");
162 // Get the BlockAddress for this and update references to use it.
163 BlockAddress *BA = BlockAddress::get(TheFn, Res);
164 Refs[i].second->replaceAllUsesWith(BA);
165 Refs[i].second->eraseFromParent();
171 //===----------------------------------------------------------------------===//
172 // Top-Level Entities
173 //===----------------------------------------------------------------------===//
175 bool LLParser::ParseTopLevelEntities() {
177 switch (Lex.getKind()) {
178 default: return TokError("expected top-level entity");
179 case lltok::Eof: return false;
180 //case lltok::kw_define:
181 case lltok::kw_declare: if (ParseDeclare()) return true; break;
182 case lltok::kw_define: if (ParseDefine()) return true; break;
183 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
184 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
185 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
186 case lltok::kw_type: if (ParseUnnamedType()) return true; break;
187 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
188 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
189 case lltok::LocalVar: if (ParseNamedType()) return true; break;
190 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
191 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
192 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
193 case lltok::MetadataVar: if (ParseNamedMetadata()) return true; break;
195 // The Global variable production with no name can have many different
196 // optional leading prefixes, the production is:
197 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
198 // OptionalAddrSpace ('constant'|'global') ...
199 case lltok::kw_private: // OptionalLinkage
200 case lltok::kw_linker_private: // OptionalLinkage
201 case lltok::kw_linker_private_weak: // OptionalLinkage
202 case lltok::kw_internal: // OptionalLinkage
203 case lltok::kw_weak: // OptionalLinkage
204 case lltok::kw_weak_odr: // OptionalLinkage
205 case lltok::kw_linkonce: // OptionalLinkage
206 case lltok::kw_linkonce_odr: // OptionalLinkage
207 case lltok::kw_appending: // OptionalLinkage
208 case lltok::kw_dllexport: // OptionalLinkage
209 case lltok::kw_common: // OptionalLinkage
210 case lltok::kw_dllimport: // OptionalLinkage
211 case lltok::kw_extern_weak: // OptionalLinkage
212 case lltok::kw_external: { // OptionalLinkage
213 unsigned Linkage, Visibility;
214 if (ParseOptionalLinkage(Linkage) ||
215 ParseOptionalVisibility(Visibility) ||
216 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
220 case lltok::kw_default: // OptionalVisibility
221 case lltok::kw_hidden: // OptionalVisibility
222 case lltok::kw_protected: { // OptionalVisibility
224 if (ParseOptionalVisibility(Visibility) ||
225 ParseGlobal("", SMLoc(), 0, false, Visibility))
230 case lltok::kw_thread_local: // OptionalThreadLocal
231 case lltok::kw_addrspace: // OptionalAddrSpace
232 case lltok::kw_constant: // GlobalType
233 case lltok::kw_global: // GlobalType
234 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
242 /// ::= 'module' 'asm' STRINGCONSTANT
243 bool LLParser::ParseModuleAsm() {
244 assert(Lex.getKind() == lltok::kw_module);
248 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
249 ParseStringConstant(AsmStr)) return true;
251 const std::string &AsmSoFar = M->getModuleInlineAsm();
252 if (AsmSoFar.empty())
253 M->setModuleInlineAsm(AsmStr);
255 M->setModuleInlineAsm(AsmSoFar+"\n"+AsmStr);
260 /// ::= 'target' 'triple' '=' STRINGCONSTANT
261 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
262 bool LLParser::ParseTargetDefinition() {
263 assert(Lex.getKind() == lltok::kw_target);
266 default: return TokError("unknown target property");
267 case lltok::kw_triple:
269 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
270 ParseStringConstant(Str))
272 M->setTargetTriple(Str);
274 case lltok::kw_datalayout:
276 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
277 ParseStringConstant(Str))
279 M->setDataLayout(Str);
285 /// ::= 'deplibs' '=' '[' ']'
286 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
287 bool LLParser::ParseDepLibs() {
288 assert(Lex.getKind() == lltok::kw_deplibs);
290 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
291 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
294 if (EatIfPresent(lltok::rsquare))
298 if (ParseStringConstant(Str)) return true;
301 while (EatIfPresent(lltok::comma)) {
302 if (ParseStringConstant(Str)) return true;
306 return ParseToken(lltok::rsquare, "expected ']' at end of list");
309 /// ParseUnnamedType:
311 /// ::= LocalVarID '=' 'type' type
312 bool LLParser::ParseUnnamedType() {
313 unsigned TypeID = NumberedTypes.size();
315 // Handle the LocalVarID form.
316 if (Lex.getKind() == lltok::LocalVarID) {
317 if (Lex.getUIntVal() != TypeID)
318 return Error(Lex.getLoc(), "type expected to be numbered '%" +
319 utostr(TypeID) + "'");
320 Lex.Lex(); // eat LocalVarID;
322 if (ParseToken(lltok::equal, "expected '=' after name"))
326 LocTy TypeLoc = Lex.getLoc();
327 if (ParseToken(lltok::kw_type, "expected 'type' after '='")) return true;
329 PATypeHolder Ty(Type::getVoidTy(Context));
330 if (ParseType(Ty)) return true;
332 // See if this type was previously referenced.
333 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
334 FI = ForwardRefTypeIDs.find(TypeID);
335 if (FI != ForwardRefTypeIDs.end()) {
336 if (FI->second.first.get() == Ty)
337 return Error(TypeLoc, "self referential type is invalid");
339 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
340 Ty = FI->second.first.get();
341 ForwardRefTypeIDs.erase(FI);
344 NumberedTypes.push_back(Ty);
350 /// ::= LocalVar '=' 'type' type
351 bool LLParser::ParseNamedType() {
352 std::string Name = Lex.getStrVal();
353 LocTy NameLoc = Lex.getLoc();
354 Lex.Lex(); // eat LocalVar.
356 PATypeHolder Ty(Type::getVoidTy(Context));
358 if (ParseToken(lltok::equal, "expected '=' after name") ||
359 ParseToken(lltok::kw_type, "expected 'type' after name") ||
363 // Set the type name, checking for conflicts as we do so.
364 bool AlreadyExists = M->addTypeName(Name, Ty);
365 if (!AlreadyExists) return false;
367 // See if this type is a forward reference. We need to eagerly resolve
368 // types to allow recursive type redefinitions below.
369 std::map<std::string, std::pair<PATypeHolder, LocTy> >::iterator
370 FI = ForwardRefTypes.find(Name);
371 if (FI != ForwardRefTypes.end()) {
372 if (FI->second.first.get() == Ty)
373 return Error(NameLoc, "self referential type is invalid");
375 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
376 Ty = FI->second.first.get();
377 ForwardRefTypes.erase(FI);
380 // Inserting a name that is already defined, get the existing name.
381 const Type *Existing = M->getTypeByName(Name);
382 assert(Existing && "Conflict but no matching type?!");
384 // Otherwise, this is an attempt to redefine a type. That's okay if
385 // the redefinition is identical to the original.
386 // FIXME: REMOVE REDEFINITIONS IN LLVM 3.0
387 if (Existing == Ty) return false;
389 // Any other kind of (non-equivalent) redefinition is an error.
390 return Error(NameLoc, "redefinition of type named '" + Name + "' of type '" +
391 Ty->getDescription() + "'");
396 /// ::= 'declare' FunctionHeader
397 bool LLParser::ParseDeclare() {
398 assert(Lex.getKind() == lltok::kw_declare);
402 return ParseFunctionHeader(F, false);
406 /// ::= 'define' FunctionHeader '{' ...
407 bool LLParser::ParseDefine() {
408 assert(Lex.getKind() == lltok::kw_define);
412 return ParseFunctionHeader(F, true) ||
413 ParseFunctionBody(*F);
419 bool LLParser::ParseGlobalType(bool &IsConstant) {
420 if (Lex.getKind() == lltok::kw_constant)
422 else if (Lex.getKind() == lltok::kw_global)
426 return TokError("expected 'global' or 'constant'");
432 /// ParseUnnamedGlobal:
433 /// OptionalVisibility ALIAS ...
434 /// OptionalLinkage OptionalVisibility ... -> global variable
435 /// GlobalID '=' OptionalVisibility ALIAS ...
436 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
437 bool LLParser::ParseUnnamedGlobal() {
438 unsigned VarID = NumberedVals.size();
440 LocTy NameLoc = Lex.getLoc();
442 // Handle the GlobalID form.
443 if (Lex.getKind() == lltok::GlobalID) {
444 if (Lex.getUIntVal() != VarID)
445 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
446 utostr(VarID) + "'");
447 Lex.Lex(); // eat GlobalID;
449 if (ParseToken(lltok::equal, "expected '=' after name"))
454 unsigned Linkage, Visibility;
455 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
456 ParseOptionalVisibility(Visibility))
459 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
460 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
461 return ParseAlias(Name, NameLoc, Visibility);
464 /// ParseNamedGlobal:
465 /// GlobalVar '=' OptionalVisibility ALIAS ...
466 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
467 bool LLParser::ParseNamedGlobal() {
468 assert(Lex.getKind() == lltok::GlobalVar);
469 LocTy NameLoc = Lex.getLoc();
470 std::string Name = Lex.getStrVal();
474 unsigned Linkage, Visibility;
475 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
476 ParseOptionalLinkage(Linkage, HasLinkage) ||
477 ParseOptionalVisibility(Visibility))
480 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
481 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
482 return ParseAlias(Name, NameLoc, Visibility);
486 // ::= '!' STRINGCONSTANT
487 bool LLParser::ParseMDString(MDString *&Result) {
489 if (ParseStringConstant(Str)) return true;
490 Result = MDString::get(Context, Str);
495 // ::= '!' MDNodeNumber
497 /// This version of ParseMDNodeID returns the slot number and null in the case
498 /// of a forward reference.
499 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
500 // !{ ..., !42, ... }
501 if (ParseUInt32(SlotNo)) return true;
503 // Check existing MDNode.
504 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != 0)
505 Result = NumberedMetadata[SlotNo];
511 bool LLParser::ParseMDNodeID(MDNode *&Result) {
512 // !{ ..., !42, ... }
514 if (ParseMDNodeID(Result, MID)) return true;
516 // If not a forward reference, just return it now.
517 if (Result) return false;
519 // Otherwise, create MDNode forward reference.
521 // FIXME: This is not unique enough!
522 std::string FwdRefName = "llvm.mdnode.fwdref." + utostr(MID);
523 Value *V = MDString::get(Context, FwdRefName);
524 MDNode *FwdNode = MDNode::get(Context, &V, 1);
525 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
527 if (NumberedMetadata.size() <= MID)
528 NumberedMetadata.resize(MID+1);
529 NumberedMetadata[MID] = FwdNode;
534 /// ParseNamedMetadata:
535 /// !foo = !{ !1, !2 }
536 bool LLParser::ParseNamedMetadata() {
537 assert(Lex.getKind() == lltok::MetadataVar);
538 std::string Name = Lex.getStrVal();
541 if (ParseToken(lltok::equal, "expected '=' here") ||
542 ParseToken(lltok::exclaim, "Expected '!' here") ||
543 ParseToken(lltok::lbrace, "Expected '{' here"))
546 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
547 if (Lex.getKind() != lltok::rbrace)
549 if (ParseToken(lltok::exclaim, "Expected '!' here"))
553 if (ParseMDNodeID(N)) return true;
555 } while (EatIfPresent(lltok::comma));
557 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
563 /// ParseStandaloneMetadata:
565 bool LLParser::ParseStandaloneMetadata() {
566 assert(Lex.getKind() == lltok::exclaim);
568 unsigned MetadataID = 0;
571 PATypeHolder Ty(Type::getVoidTy(Context));
572 SmallVector<Value *, 16> Elts;
573 if (ParseUInt32(MetadataID) ||
574 ParseToken(lltok::equal, "expected '=' here") ||
575 ParseType(Ty, TyLoc) ||
576 ParseToken(lltok::exclaim, "Expected '!' here") ||
577 ParseToken(lltok::lbrace, "Expected '{' here") ||
578 ParseMDNodeVector(Elts, NULL) ||
579 ParseToken(lltok::rbrace, "expected end of metadata node"))
582 MDNode *Init = MDNode::get(Context, Elts.data(), Elts.size());
584 // See if this was forward referenced, if so, handle it.
585 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
586 FI = ForwardRefMDNodes.find(MetadataID);
587 if (FI != ForwardRefMDNodes.end()) {
588 FI->second.first->replaceAllUsesWith(Init);
589 ForwardRefMDNodes.erase(FI);
591 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
593 if (MetadataID >= NumberedMetadata.size())
594 NumberedMetadata.resize(MetadataID+1);
596 if (NumberedMetadata[MetadataID] != 0)
597 return TokError("Metadata id is already used");
598 NumberedMetadata[MetadataID] = Init;
605 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
608 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
609 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
611 /// Everything through visibility has already been parsed.
613 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
614 unsigned Visibility) {
615 assert(Lex.getKind() == lltok::kw_alias);
618 LocTy LinkageLoc = Lex.getLoc();
619 if (ParseOptionalLinkage(Linkage))
622 if (Linkage != GlobalValue::ExternalLinkage &&
623 Linkage != GlobalValue::WeakAnyLinkage &&
624 Linkage != GlobalValue::WeakODRLinkage &&
625 Linkage != GlobalValue::InternalLinkage &&
626 Linkage != GlobalValue::PrivateLinkage &&
627 Linkage != GlobalValue::LinkerPrivateLinkage &&
628 Linkage != GlobalValue::LinkerPrivateWeakLinkage)
629 return Error(LinkageLoc, "invalid linkage type for alias");
632 LocTy AliaseeLoc = Lex.getLoc();
633 if (Lex.getKind() != lltok::kw_bitcast &&
634 Lex.getKind() != lltok::kw_getelementptr) {
635 if (ParseGlobalTypeAndValue(Aliasee)) return true;
637 // The bitcast dest type is not present, it is implied by the dest type.
639 if (ParseValID(ID)) return true;
640 if (ID.Kind != ValID::t_Constant)
641 return Error(AliaseeLoc, "invalid aliasee");
642 Aliasee = ID.ConstantVal;
645 if (!Aliasee->getType()->isPointerTy())
646 return Error(AliaseeLoc, "alias must have pointer type");
648 // Okay, create the alias but do not insert it into the module yet.
649 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
650 (GlobalValue::LinkageTypes)Linkage, Name,
652 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
654 // See if this value already exists in the symbol table. If so, it is either
655 // a redefinition or a definition of a forward reference.
656 if (GlobalValue *Val = M->getNamedValue(Name)) {
657 // See if this was a redefinition. If so, there is no entry in
659 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
660 I = ForwardRefVals.find(Name);
661 if (I == ForwardRefVals.end())
662 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
664 // Otherwise, this was a definition of forward ref. Verify that types
666 if (Val->getType() != GA->getType())
667 return Error(NameLoc,
668 "forward reference and definition of alias have different types");
670 // If they agree, just RAUW the old value with the alias and remove the
672 Val->replaceAllUsesWith(GA);
673 Val->eraseFromParent();
674 ForwardRefVals.erase(I);
677 // Insert into the module, we know its name won't collide now.
678 M->getAliasList().push_back(GA);
679 assert(GA->getNameStr() == Name && "Should not be a name conflict!");
685 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
686 /// OptionalAddrSpace GlobalType Type Const
687 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
688 /// OptionalAddrSpace GlobalType Type Const
690 /// Everything through visibility has been parsed already.
692 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
693 unsigned Linkage, bool HasLinkage,
694 unsigned Visibility) {
696 bool ThreadLocal, IsConstant;
699 PATypeHolder Ty(Type::getVoidTy(Context));
700 if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
701 ParseOptionalAddrSpace(AddrSpace) ||
702 ParseGlobalType(IsConstant) ||
703 ParseType(Ty, TyLoc))
706 // If the linkage is specified and is external, then no initializer is
709 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
710 Linkage != GlobalValue::ExternalWeakLinkage &&
711 Linkage != GlobalValue::ExternalLinkage)) {
712 if (ParseGlobalValue(Ty, Init))
716 if (Ty->isFunctionTy() || Ty->isLabelTy())
717 return Error(TyLoc, "invalid type for global variable");
719 GlobalVariable *GV = 0;
721 // See if the global was forward referenced, if so, use the global.
723 if (GlobalValue *GVal = M->getNamedValue(Name)) {
724 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
725 return Error(NameLoc, "redefinition of global '@" + Name + "'");
726 GV = cast<GlobalVariable>(GVal);
729 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
730 I = ForwardRefValIDs.find(NumberedVals.size());
731 if (I != ForwardRefValIDs.end()) {
732 GV = cast<GlobalVariable>(I->second.first);
733 ForwardRefValIDs.erase(I);
738 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
739 Name, 0, false, AddrSpace);
741 if (GV->getType()->getElementType() != Ty)
743 "forward reference and definition of global have different types");
745 // Move the forward-reference to the correct spot in the module.
746 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
750 NumberedVals.push_back(GV);
752 // Set the parsed properties on the global.
754 GV->setInitializer(Init);
755 GV->setConstant(IsConstant);
756 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
757 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
758 GV->setThreadLocal(ThreadLocal);
760 // Parse attributes on the global.
761 while (Lex.getKind() == lltok::comma) {
764 if (Lex.getKind() == lltok::kw_section) {
766 GV->setSection(Lex.getStrVal());
767 if (ParseToken(lltok::StringConstant, "expected global section string"))
769 } else if (Lex.getKind() == lltok::kw_align) {
771 if (ParseOptionalAlignment(Alignment)) return true;
772 GV->setAlignment(Alignment);
774 TokError("unknown global variable property!");
782 //===----------------------------------------------------------------------===//
783 // GlobalValue Reference/Resolution Routines.
784 //===----------------------------------------------------------------------===//
786 /// GetGlobalVal - Get a value with the specified name or ID, creating a
787 /// forward reference record if needed. This can return null if the value
788 /// exists but does not have the right type.
789 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, const Type *Ty,
791 const PointerType *PTy = dyn_cast<PointerType>(Ty);
793 Error(Loc, "global variable reference must have pointer type");
797 // Look this name up in the normal function symbol table.
799 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
801 // If this is a forward reference for the value, see if we already created a
802 // forward ref record.
804 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
805 I = ForwardRefVals.find(Name);
806 if (I != ForwardRefVals.end())
807 Val = I->second.first;
810 // If we have the value in the symbol table or fwd-ref table, return it.
812 if (Val->getType() == Ty) return Val;
813 Error(Loc, "'@" + Name + "' defined with type '" +
814 Val->getType()->getDescription() + "'");
818 // Otherwise, create a new forward reference for this value and remember it.
820 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
821 // Function types can return opaque but functions can't.
822 if (FT->getReturnType()->isOpaqueTy()) {
823 Error(Loc, "function may not return opaque type");
827 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
829 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
830 GlobalValue::ExternalWeakLinkage, 0, Name);
833 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
837 GlobalValue *LLParser::GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc) {
838 const PointerType *PTy = dyn_cast<PointerType>(Ty);
840 Error(Loc, "global variable reference must have pointer type");
844 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
846 // If this is a forward reference for the value, see if we already created a
847 // forward ref record.
849 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
850 I = ForwardRefValIDs.find(ID);
851 if (I != ForwardRefValIDs.end())
852 Val = I->second.first;
855 // If we have the value in the symbol table or fwd-ref table, return it.
857 if (Val->getType() == Ty) return Val;
858 Error(Loc, "'@" + utostr(ID) + "' defined with type '" +
859 Val->getType()->getDescription() + "'");
863 // Otherwise, create a new forward reference for this value and remember it.
865 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
866 // Function types can return opaque but functions can't.
867 if (FT->getReturnType()->isOpaqueTy()) {
868 Error(Loc, "function may not return opaque type");
871 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
873 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
874 GlobalValue::ExternalWeakLinkage, 0, "");
877 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
882 //===----------------------------------------------------------------------===//
884 //===----------------------------------------------------------------------===//
886 /// ParseToken - If the current token has the specified kind, eat it and return
887 /// success. Otherwise, emit the specified error and return failure.
888 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
889 if (Lex.getKind() != T)
890 return TokError(ErrMsg);
895 /// ParseStringConstant
896 /// ::= StringConstant
897 bool LLParser::ParseStringConstant(std::string &Result) {
898 if (Lex.getKind() != lltok::StringConstant)
899 return TokError("expected string constant");
900 Result = Lex.getStrVal();
907 bool LLParser::ParseUInt32(unsigned &Val) {
908 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
909 return TokError("expected integer");
910 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
911 if (Val64 != unsigned(Val64))
912 return TokError("expected 32-bit integer (too large)");
919 /// ParseOptionalAddrSpace
921 /// := 'addrspace' '(' uint32 ')'
922 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
924 if (!EatIfPresent(lltok::kw_addrspace))
926 return ParseToken(lltok::lparen, "expected '(' in address space") ||
927 ParseUInt32(AddrSpace) ||
928 ParseToken(lltok::rparen, "expected ')' in address space");
931 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
932 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
933 /// 2: function attr.
934 /// 3: function arg after value: FIXME: REMOVE IN LLVM 3.0
935 bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
936 Attrs = Attribute::None;
937 LocTy AttrLoc = Lex.getLoc();
940 switch (Lex.getKind()) {
943 // Treat these as signext/zeroext if they occur in the argument list after
944 // the value, as in "call i8 @foo(i8 10 sext)". If they occur before the
945 // value, as in "call i8 @foo(i8 sext (" then it is part of a constant
947 // FIXME: REMOVE THIS IN LLVM 3.0
949 if (Lex.getKind() == lltok::kw_sext)
950 Attrs |= Attribute::SExt;
952 Attrs |= Attribute::ZExt;
956 default: // End of attributes.
957 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
958 return Error(AttrLoc, "invalid use of function-only attribute");
960 if (AttrKind != 0 && AttrKind != 3 && (Attrs & Attribute::ParameterOnly))
961 return Error(AttrLoc, "invalid use of parameter-only attribute");
964 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
965 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
966 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
967 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
968 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
969 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
970 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
971 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
973 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
974 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
975 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
976 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
977 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
978 case lltok::kw_inlinehint: Attrs |= Attribute::InlineHint; break;
979 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
980 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
981 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
982 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
983 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
984 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
985 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
987 case lltok::kw_alignstack: {
989 if (ParseOptionalStackAlignment(Alignment))
991 Attrs |= Attribute::constructStackAlignmentFromInt(Alignment);
995 case lltok::kw_align: {
997 if (ParseOptionalAlignment(Alignment))
999 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
1008 /// ParseOptionalLinkage
1011 /// ::= 'linker_private'
1012 /// ::= 'linker_private_weak'
1017 /// ::= 'linkonce_odr'
1018 /// ::= 'available_externally'
1023 /// ::= 'extern_weak'
1025 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1027 switch (Lex.getKind()) {
1028 default: Res=GlobalValue::ExternalLinkage; return false;
1029 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1030 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1031 case lltok::kw_linker_private_weak:
1032 Res = GlobalValue::LinkerPrivateWeakLinkage;
1034 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1035 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1036 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1037 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1038 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1039 case lltok::kw_available_externally:
1040 Res = GlobalValue::AvailableExternallyLinkage;
1042 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1043 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1044 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1045 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1046 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1047 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1054 /// ParseOptionalVisibility
1060 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1061 switch (Lex.getKind()) {
1062 default: Res = GlobalValue::DefaultVisibility; return false;
1063 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1064 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1065 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1071 /// ParseOptionalCallingConv
1076 /// ::= 'x86_stdcallcc'
1077 /// ::= 'x86_fastcallcc'
1078 /// ::= 'x86_thiscallcc'
1079 /// ::= 'arm_apcscc'
1080 /// ::= 'arm_aapcscc'
1081 /// ::= 'arm_aapcs_vfpcc'
1082 /// ::= 'msp430_intrcc'
1085 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1086 switch (Lex.getKind()) {
1087 default: CC = CallingConv::C; return false;
1088 case lltok::kw_ccc: CC = CallingConv::C; break;
1089 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1090 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1091 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1092 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1093 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1094 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1095 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1096 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1097 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1098 case lltok::kw_cc: {
1099 unsigned ArbitraryCC;
1101 if (ParseUInt32(ArbitraryCC)) {
1104 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1114 /// ParseInstructionMetadata
1115 /// ::= !dbg !42 (',' !dbg !57)*
1116 bool LLParser::ParseInstructionMetadata(Instruction *Inst) {
1118 if (Lex.getKind() != lltok::MetadataVar)
1119 return TokError("expected metadata after comma");
1121 std::string Name = Lex.getStrVal();
1126 SMLoc Loc = Lex.getLoc();
1127 if (ParseToken(lltok::exclaim, "expected '!' here") ||
1128 ParseMDNodeID(Node, NodeID))
1131 unsigned MDK = M->getMDKindID(Name.c_str());
1133 // If we got the node, add it to the instruction.
1134 Inst->setMetadata(MDK, Node);
1136 MDRef R = { Loc, MDK, NodeID };
1137 // Otherwise, remember that this should be resolved later.
1138 ForwardRefInstMetadata[Inst].push_back(R);
1141 // If this is the end of the list, we're done.
1142 } while (EatIfPresent(lltok::comma));
1146 /// ParseOptionalAlignment
1149 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1151 if (!EatIfPresent(lltok::kw_align))
1153 LocTy AlignLoc = Lex.getLoc();
1154 if (ParseUInt32(Alignment)) return true;
1155 if (!isPowerOf2_32(Alignment))
1156 return Error(AlignLoc, "alignment is not a power of two");
1157 if (Alignment > Value::MaximumAlignment)
1158 return Error(AlignLoc, "huge alignments are not supported yet");
1162 /// ParseOptionalCommaAlign
1166 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1168 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1169 bool &AteExtraComma) {
1170 AteExtraComma = false;
1171 while (EatIfPresent(lltok::comma)) {
1172 // Metadata at the end is an early exit.
1173 if (Lex.getKind() == lltok::MetadataVar) {
1174 AteExtraComma = true;
1178 if (Lex.getKind() != lltok::kw_align)
1179 return Error(Lex.getLoc(), "expected metadata or 'align'");
1181 LocTy AlignLoc = Lex.getLoc();
1182 if (ParseOptionalAlignment(Alignment)) return true;
1188 /// ParseOptionalStackAlignment
1190 /// ::= 'alignstack' '(' 4 ')'
1191 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1193 if (!EatIfPresent(lltok::kw_alignstack))
1195 LocTy ParenLoc = Lex.getLoc();
1196 if (!EatIfPresent(lltok::lparen))
1197 return Error(ParenLoc, "expected '('");
1198 LocTy AlignLoc = Lex.getLoc();
1199 if (ParseUInt32(Alignment)) return true;
1200 ParenLoc = Lex.getLoc();
1201 if (!EatIfPresent(lltok::rparen))
1202 return Error(ParenLoc, "expected ')'");
1203 if (!isPowerOf2_32(Alignment))
1204 return Error(AlignLoc, "stack alignment is not a power of two");
1208 /// ParseIndexList - This parses the index list for an insert/extractvalue
1209 /// instruction. This sets AteExtraComma in the case where we eat an extra
1210 /// comma at the end of the line and find that it is followed by metadata.
1211 /// Clients that don't allow metadata can call the version of this function that
1212 /// only takes one argument.
1215 /// ::= (',' uint32)+
1217 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1218 bool &AteExtraComma) {
1219 AteExtraComma = false;
1221 if (Lex.getKind() != lltok::comma)
1222 return TokError("expected ',' as start of index list");
1224 while (EatIfPresent(lltok::comma)) {
1225 if (Lex.getKind() == lltok::MetadataVar) {
1226 AteExtraComma = true;
1230 if (ParseUInt32(Idx)) return true;
1231 Indices.push_back(Idx);
1237 //===----------------------------------------------------------------------===//
1239 //===----------------------------------------------------------------------===//
1241 /// ParseType - Parse and resolve a full type.
1242 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1243 LocTy TypeLoc = Lex.getLoc();
1244 if (ParseTypeRec(Result)) return true;
1246 // Verify no unresolved uprefs.
1247 if (!UpRefs.empty())
1248 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1250 if (!AllowVoid && Result.get()->isVoidTy())
1251 return Error(TypeLoc, "void type only allowed for function results");
1256 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1257 /// called. It loops through the UpRefs vector, which is a list of the
1258 /// currently active types. For each type, if the up-reference is contained in
1259 /// the newly completed type, we decrement the level count. When the level
1260 /// count reaches zero, the up-referenced type is the type that is passed in:
1261 /// thus we can complete the cycle.
1263 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1264 // If Ty isn't abstract, or if there are no up-references in it, then there is
1265 // nothing to resolve here.
1266 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1268 PATypeHolder Ty(ty);
1270 dbgs() << "Type '" << Ty->getDescription()
1271 << "' newly formed. Resolving upreferences.\n"
1272 << UpRefs.size() << " upreferences active!\n";
1275 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1276 // to zero), we resolve them all together before we resolve them to Ty. At
1277 // the end of the loop, if there is anything to resolve to Ty, it will be in
1279 OpaqueType *TypeToResolve = 0;
1281 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1282 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1284 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1285 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1288 dbgs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1289 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1290 << (ContainsType ? "true" : "false")
1291 << " level=" << UpRefs[i].NestingLevel << "\n";
1296 // Decrement level of upreference
1297 unsigned Level = --UpRefs[i].NestingLevel;
1298 UpRefs[i].LastContainedTy = Ty;
1300 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1305 dbgs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1308 TypeToResolve = UpRefs[i].UpRefTy;
1310 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1311 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1312 --i; // Do not skip the next element.
1316 TypeToResolve->refineAbstractTypeTo(Ty);
1322 /// ParseTypeRec - The recursive function used to process the internal
1323 /// implementation details of types.
1324 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1325 switch (Lex.getKind()) {
1327 return TokError("expected type");
1329 // TypeRec ::= 'float' | 'void' (etc)
1330 Result = Lex.getTyVal();
1333 case lltok::kw_opaque:
1334 // TypeRec ::= 'opaque'
1335 Result = OpaqueType::get(Context);
1339 // TypeRec ::= '{' ... '}'
1340 if (ParseStructType(Result, false))
1343 case lltok::kw_union:
1344 // TypeRec ::= 'union' '{' ... '}'
1345 if (ParseUnionType(Result))
1348 case lltok::lsquare:
1349 // TypeRec ::= '[' ... ']'
1350 Lex.Lex(); // eat the lsquare.
1351 if (ParseArrayVectorType(Result, false))
1354 case lltok::less: // Either vector or packed struct.
1355 // TypeRec ::= '<' ... '>'
1357 if (Lex.getKind() == lltok::lbrace) {
1358 if (ParseStructType(Result, true) ||
1359 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1361 } else if (ParseArrayVectorType(Result, true))
1364 case lltok::LocalVar:
1365 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1367 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1370 Result = OpaqueType::get(Context);
1371 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1372 std::make_pair(Result,
1374 M->addTypeName(Lex.getStrVal(), Result.get());
1379 case lltok::LocalVarID:
1381 if (Lex.getUIntVal() < NumberedTypes.size())
1382 Result = NumberedTypes[Lex.getUIntVal()];
1384 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1385 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1386 if (I != ForwardRefTypeIDs.end())
1387 Result = I->second.first;
1389 Result = OpaqueType::get(Context);
1390 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1391 std::make_pair(Result,
1397 case lltok::backslash: {
1398 // TypeRec ::= '\' 4
1401 if (ParseUInt32(Val)) return true;
1402 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1403 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1409 // Parse the type suffixes.
1411 switch (Lex.getKind()) {
1413 default: return false;
1415 // TypeRec ::= TypeRec '*'
1417 if (Result.get()->isLabelTy())
1418 return TokError("basic block pointers are invalid");
1419 if (Result.get()->isVoidTy())
1420 return TokError("pointers to void are invalid; use i8* instead");
1421 if (!PointerType::isValidElementType(Result.get()))
1422 return TokError("pointer to this type is invalid");
1423 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1427 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1428 case lltok::kw_addrspace: {
1429 if (Result.get()->isLabelTy())
1430 return TokError("basic block pointers are invalid");
1431 if (Result.get()->isVoidTy())
1432 return TokError("pointers to void are invalid; use i8* instead");
1433 if (!PointerType::isValidElementType(Result.get()))
1434 return TokError("pointer to this type is invalid");
1436 if (ParseOptionalAddrSpace(AddrSpace) ||
1437 ParseToken(lltok::star, "expected '*' in address space"))
1440 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1444 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1446 if (ParseFunctionType(Result))
1453 /// ParseParameterList
1455 /// ::= '(' Arg (',' Arg)* ')'
1457 /// ::= Type OptionalAttributes Value OptionalAttributes
1458 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1459 PerFunctionState &PFS) {
1460 if (ParseToken(lltok::lparen, "expected '(' in call"))
1463 while (Lex.getKind() != lltok::rparen) {
1464 // If this isn't the first argument, we need a comma.
1465 if (!ArgList.empty() &&
1466 ParseToken(lltok::comma, "expected ',' in argument list"))
1469 // Parse the argument.
1471 PATypeHolder ArgTy(Type::getVoidTy(Context));
1472 unsigned ArgAttrs1 = Attribute::None;
1473 unsigned ArgAttrs2 = Attribute::None;
1475 if (ParseType(ArgTy, ArgLoc))
1478 // Otherwise, handle normal operands.
1479 if (ParseOptionalAttrs(ArgAttrs1, 0) ||
1480 ParseValue(ArgTy, V, PFS) ||
1481 // FIXME: Should not allow attributes after the argument, remove this
1483 ParseOptionalAttrs(ArgAttrs2, 3))
1485 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1488 Lex.Lex(); // Lex the ')'.
1494 /// ParseArgumentList - Parse the argument list for a function type or function
1495 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1496 /// ::= '(' ArgTypeListI ')'
1500 /// ::= ArgTypeList ',' '...'
1501 /// ::= ArgType (',' ArgType)*
1503 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1504 bool &isVarArg, bool inType) {
1506 assert(Lex.getKind() == lltok::lparen);
1507 Lex.Lex(); // eat the (.
1509 if (Lex.getKind() == lltok::rparen) {
1511 } else if (Lex.getKind() == lltok::dotdotdot) {
1515 LocTy TypeLoc = Lex.getLoc();
1516 PATypeHolder ArgTy(Type::getVoidTy(Context));
1520 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1521 // types (such as a function returning a pointer to itself). If parsing a
1522 // function prototype, we require fully resolved types.
1523 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1524 ParseOptionalAttrs(Attrs, 0)) return true;
1526 if (ArgTy->isVoidTy())
1527 return Error(TypeLoc, "argument can not have void type");
1529 if (Lex.getKind() == lltok::LocalVar ||
1530 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1531 Name = Lex.getStrVal();
1535 if (!FunctionType::isValidArgumentType(ArgTy))
1536 return Error(TypeLoc, "invalid type for function argument");
1538 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1540 while (EatIfPresent(lltok::comma)) {
1541 // Handle ... at end of arg list.
1542 if (EatIfPresent(lltok::dotdotdot)) {
1547 // Otherwise must be an argument type.
1548 TypeLoc = Lex.getLoc();
1549 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1550 ParseOptionalAttrs(Attrs, 0)) return true;
1552 if (ArgTy->isVoidTy())
1553 return Error(TypeLoc, "argument can not have void type");
1555 if (Lex.getKind() == lltok::LocalVar ||
1556 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1557 Name = Lex.getStrVal();
1563 if (!ArgTy->isFirstClassType() && !ArgTy->isOpaqueTy())
1564 return Error(TypeLoc, "invalid type for function argument");
1566 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1570 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1573 /// ParseFunctionType
1574 /// ::= Type ArgumentList OptionalAttrs
1575 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1576 assert(Lex.getKind() == lltok::lparen);
1578 if (!FunctionType::isValidReturnType(Result))
1579 return TokError("invalid function return type");
1581 std::vector<ArgInfo> ArgList;
1584 if (ParseArgumentList(ArgList, isVarArg, true) ||
1585 // FIXME: Allow, but ignore attributes on function types!
1586 // FIXME: Remove in LLVM 3.0
1587 ParseOptionalAttrs(Attrs, 2))
1590 // Reject names on the arguments lists.
1591 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1592 if (!ArgList[i].Name.empty())
1593 return Error(ArgList[i].Loc, "argument name invalid in function type");
1594 if (!ArgList[i].Attrs != 0) {
1595 // Allow but ignore attributes on function types; this permits
1597 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1601 std::vector<const Type*> ArgListTy;
1602 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1603 ArgListTy.push_back(ArgList[i].Type);
1605 Result = HandleUpRefs(FunctionType::get(Result.get(),
1606 ArgListTy, isVarArg));
1610 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1613 /// ::= '{' TypeRec (',' TypeRec)* '}'
1614 /// ::= '<' '{' '}' '>'
1615 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1616 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1617 assert(Lex.getKind() == lltok::lbrace);
1618 Lex.Lex(); // Consume the '{'
1620 if (EatIfPresent(lltok::rbrace)) {
1621 Result = StructType::get(Context, Packed);
1625 std::vector<PATypeHolder> ParamsList;
1626 LocTy EltTyLoc = Lex.getLoc();
1627 if (ParseTypeRec(Result)) return true;
1628 ParamsList.push_back(Result);
1630 if (Result->isVoidTy())
1631 return Error(EltTyLoc, "struct element can not have void type");
1632 if (!StructType::isValidElementType(Result))
1633 return Error(EltTyLoc, "invalid element type for struct");
1635 while (EatIfPresent(lltok::comma)) {
1636 EltTyLoc = Lex.getLoc();
1637 if (ParseTypeRec(Result)) return true;
1639 if (Result->isVoidTy())
1640 return Error(EltTyLoc, "struct element can not have void type");
1641 if (!StructType::isValidElementType(Result))
1642 return Error(EltTyLoc, "invalid element type for struct");
1644 ParamsList.push_back(Result);
1647 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1650 std::vector<const Type*> ParamsListTy;
1651 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1652 ParamsListTy.push_back(ParamsList[i].get());
1653 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1659 /// ::= 'union' '{' TypeRec (',' TypeRec)* '}'
1660 bool LLParser::ParseUnionType(PATypeHolder &Result) {
1661 assert(Lex.getKind() == lltok::kw_union);
1662 Lex.Lex(); // Consume the 'union'
1664 if (ParseToken(lltok::lbrace, "'{' expected after 'union'")) return true;
1666 SmallVector<PATypeHolder, 8> ParamsList;
1668 LocTy EltTyLoc = Lex.getLoc();
1669 if (ParseTypeRec(Result)) return true;
1670 ParamsList.push_back(Result);
1672 if (Result->isVoidTy())
1673 return Error(EltTyLoc, "union element can not have void type");
1674 if (!UnionType::isValidElementType(Result))
1675 return Error(EltTyLoc, "invalid element type for union");
1677 } while (EatIfPresent(lltok::comma)) ;
1679 if (ParseToken(lltok::rbrace, "expected '}' at end of union"))
1682 SmallVector<const Type*, 8> ParamsListTy;
1683 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1684 ParamsListTy.push_back(ParamsList[i].get());
1685 Result = HandleUpRefs(UnionType::get(&ParamsListTy[0], ParamsListTy.size()));
1689 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1690 /// token has already been consumed.
1692 /// ::= '[' APSINTVAL 'x' Types ']'
1693 /// ::= '<' APSINTVAL 'x' Types '>'
1694 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1695 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1696 Lex.getAPSIntVal().getBitWidth() > 64)
1697 return TokError("expected number in address space");
1699 LocTy SizeLoc = Lex.getLoc();
1700 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1703 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1706 LocTy TypeLoc = Lex.getLoc();
1707 PATypeHolder EltTy(Type::getVoidTy(Context));
1708 if (ParseTypeRec(EltTy)) return true;
1710 if (EltTy->isVoidTy())
1711 return Error(TypeLoc, "array and vector element type cannot be void");
1713 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1714 "expected end of sequential type"))
1719 return Error(SizeLoc, "zero element vector is illegal");
1720 if ((unsigned)Size != Size)
1721 return Error(SizeLoc, "size too large for vector");
1722 if (!VectorType::isValidElementType(EltTy))
1723 return Error(TypeLoc, "vector element type must be fp or integer");
1724 Result = VectorType::get(EltTy, unsigned(Size));
1726 if (!ArrayType::isValidElementType(EltTy))
1727 return Error(TypeLoc, "invalid array element type");
1728 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1733 //===----------------------------------------------------------------------===//
1734 // Function Semantic Analysis.
1735 //===----------------------------------------------------------------------===//
1737 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1739 : P(p), F(f), FunctionNumber(functionNumber) {
1741 // Insert unnamed arguments into the NumberedVals list.
1742 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1745 NumberedVals.push_back(AI);
1748 LLParser::PerFunctionState::~PerFunctionState() {
1749 // If there were any forward referenced non-basicblock values, delete them.
1750 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1751 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1752 if (!isa<BasicBlock>(I->second.first)) {
1753 I->second.first->replaceAllUsesWith(
1754 UndefValue::get(I->second.first->getType()));
1755 delete I->second.first;
1756 I->second.first = 0;
1759 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1760 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1761 if (!isa<BasicBlock>(I->second.first)) {
1762 I->second.first->replaceAllUsesWith(
1763 UndefValue::get(I->second.first->getType()));
1764 delete I->second.first;
1765 I->second.first = 0;
1769 bool LLParser::PerFunctionState::FinishFunction() {
1770 // Check to see if someone took the address of labels in this block.
1771 if (!P.ForwardRefBlockAddresses.empty()) {
1773 if (!F.getName().empty()) {
1774 FunctionID.Kind = ValID::t_GlobalName;
1775 FunctionID.StrVal = F.getName();
1777 FunctionID.Kind = ValID::t_GlobalID;
1778 FunctionID.UIntVal = FunctionNumber;
1781 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1782 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1783 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1784 // Resolve all these references.
1785 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1788 P.ForwardRefBlockAddresses.erase(FRBAI);
1792 if (!ForwardRefVals.empty())
1793 return P.Error(ForwardRefVals.begin()->second.second,
1794 "use of undefined value '%" + ForwardRefVals.begin()->first +
1796 if (!ForwardRefValIDs.empty())
1797 return P.Error(ForwardRefValIDs.begin()->second.second,
1798 "use of undefined value '%" +
1799 utostr(ForwardRefValIDs.begin()->first) + "'");
1804 /// GetVal - Get a value with the specified name or ID, creating a
1805 /// forward reference record if needed. This can return null if the value
1806 /// exists but does not have the right type.
1807 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1808 const Type *Ty, LocTy Loc) {
1809 // Look this name up in the normal function symbol table.
1810 Value *Val = F.getValueSymbolTable().lookup(Name);
1812 // If this is a forward reference for the value, see if we already created a
1813 // forward ref record.
1815 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1816 I = ForwardRefVals.find(Name);
1817 if (I != ForwardRefVals.end())
1818 Val = I->second.first;
1821 // If we have the value in the symbol table or fwd-ref table, return it.
1823 if (Val->getType() == Ty) return Val;
1824 if (Ty->isLabelTy())
1825 P.Error(Loc, "'%" + Name + "' is not a basic block");
1827 P.Error(Loc, "'%" + Name + "' defined with type '" +
1828 Val->getType()->getDescription() + "'");
1832 // Don't make placeholders with invalid type.
1833 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1834 P.Error(Loc, "invalid use of a non-first-class type");
1838 // Otherwise, create a new forward reference for this value and remember it.
1840 if (Ty->isLabelTy())
1841 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1843 FwdVal = new Argument(Ty, Name);
1845 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1849 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1851 // Look this name up in the normal function symbol table.
1852 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1854 // If this is a forward reference for the value, see if we already created a
1855 // forward ref record.
1857 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1858 I = ForwardRefValIDs.find(ID);
1859 if (I != ForwardRefValIDs.end())
1860 Val = I->second.first;
1863 // If we have the value in the symbol table or fwd-ref table, return it.
1865 if (Val->getType() == Ty) return Val;
1866 if (Ty->isLabelTy())
1867 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1869 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1870 Val->getType()->getDescription() + "'");
1874 if (!Ty->isFirstClassType() && !Ty->isOpaqueTy() && !Ty->isLabelTy()) {
1875 P.Error(Loc, "invalid use of a non-first-class type");
1879 // Otherwise, create a new forward reference for this value and remember it.
1881 if (Ty->isLabelTy())
1882 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1884 FwdVal = new Argument(Ty);
1886 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1890 /// SetInstName - After an instruction is parsed and inserted into its
1891 /// basic block, this installs its name.
1892 bool LLParser::PerFunctionState::SetInstName(int NameID,
1893 const std::string &NameStr,
1894 LocTy NameLoc, Instruction *Inst) {
1895 // If this instruction has void type, it cannot have a name or ID specified.
1896 if (Inst->getType()->isVoidTy()) {
1897 if (NameID != -1 || !NameStr.empty())
1898 return P.Error(NameLoc, "instructions returning void cannot have a name");
1902 // If this was a numbered instruction, verify that the instruction is the
1903 // expected value and resolve any forward references.
1904 if (NameStr.empty()) {
1905 // If neither a name nor an ID was specified, just use the next ID.
1907 NameID = NumberedVals.size();
1909 if (unsigned(NameID) != NumberedVals.size())
1910 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1911 utostr(NumberedVals.size()) + "'");
1913 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1914 ForwardRefValIDs.find(NameID);
1915 if (FI != ForwardRefValIDs.end()) {
1916 if (FI->second.first->getType() != Inst->getType())
1917 return P.Error(NameLoc, "instruction forward referenced with type '" +
1918 FI->second.first->getType()->getDescription() + "'");
1919 FI->second.first->replaceAllUsesWith(Inst);
1920 delete FI->second.first;
1921 ForwardRefValIDs.erase(FI);
1924 NumberedVals.push_back(Inst);
1928 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1929 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1930 FI = ForwardRefVals.find(NameStr);
1931 if (FI != ForwardRefVals.end()) {
1932 if (FI->second.first->getType() != Inst->getType())
1933 return P.Error(NameLoc, "instruction forward referenced with type '" +
1934 FI->second.first->getType()->getDescription() + "'");
1935 FI->second.first->replaceAllUsesWith(Inst);
1936 delete FI->second.first;
1937 ForwardRefVals.erase(FI);
1940 // Set the name on the instruction.
1941 Inst->setName(NameStr);
1943 if (Inst->getNameStr() != NameStr)
1944 return P.Error(NameLoc, "multiple definition of local value named '" +
1949 /// GetBB - Get a basic block with the specified name or ID, creating a
1950 /// forward reference record if needed.
1951 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1953 return cast_or_null<BasicBlock>(GetVal(Name,
1954 Type::getLabelTy(F.getContext()), Loc));
1957 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1958 return cast_or_null<BasicBlock>(GetVal(ID,
1959 Type::getLabelTy(F.getContext()), Loc));
1962 /// DefineBB - Define the specified basic block, which is either named or
1963 /// unnamed. If there is an error, this returns null otherwise it returns
1964 /// the block being defined.
1965 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1969 BB = GetBB(NumberedVals.size(), Loc);
1971 BB = GetBB(Name, Loc);
1972 if (BB == 0) return 0; // Already diagnosed error.
1974 // Move the block to the end of the function. Forward ref'd blocks are
1975 // inserted wherever they happen to be referenced.
1976 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1978 // Remove the block from forward ref sets.
1980 ForwardRefValIDs.erase(NumberedVals.size());
1981 NumberedVals.push_back(BB);
1983 // BB forward references are already in the function symbol table.
1984 ForwardRefVals.erase(Name);
1990 //===----------------------------------------------------------------------===//
1992 //===----------------------------------------------------------------------===//
1994 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1995 /// type implied. For example, if we parse "4" we don't know what integer type
1996 /// it has. The value will later be combined with its type and checked for
1997 /// sanity. PFS is used to convert function-local operands of metadata (since
1998 /// metadata operands are not just parsed here but also converted to values).
1999 /// PFS can be null when we are not parsing metadata values inside a function.
2000 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2001 ID.Loc = Lex.getLoc();
2002 switch (Lex.getKind()) {
2003 default: return TokError("expected value token");
2004 case lltok::GlobalID: // @42
2005 ID.UIntVal = Lex.getUIntVal();
2006 ID.Kind = ValID::t_GlobalID;
2008 case lltok::GlobalVar: // @foo
2009 ID.StrVal = Lex.getStrVal();
2010 ID.Kind = ValID::t_GlobalName;
2012 case lltok::LocalVarID: // %42
2013 ID.UIntVal = Lex.getUIntVal();
2014 ID.Kind = ValID::t_LocalID;
2016 case lltok::LocalVar: // %foo
2017 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
2018 ID.StrVal = Lex.getStrVal();
2019 ID.Kind = ValID::t_LocalName;
2021 case lltok::exclaim: // !42, !{...}, or !"foo"
2022 return ParseMetadataValue(ID, PFS);
2024 ID.APSIntVal = Lex.getAPSIntVal();
2025 ID.Kind = ValID::t_APSInt;
2027 case lltok::APFloat:
2028 ID.APFloatVal = Lex.getAPFloatVal();
2029 ID.Kind = ValID::t_APFloat;
2031 case lltok::kw_true:
2032 ID.ConstantVal = ConstantInt::getTrue(Context);
2033 ID.Kind = ValID::t_Constant;
2035 case lltok::kw_false:
2036 ID.ConstantVal = ConstantInt::getFalse(Context);
2037 ID.Kind = ValID::t_Constant;
2039 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2040 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2041 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2043 case lltok::lbrace: {
2044 // ValID ::= '{' ConstVector '}'
2046 SmallVector<Constant*, 16> Elts;
2047 if (ParseGlobalValueVector(Elts) ||
2048 ParseToken(lltok::rbrace, "expected end of struct constant"))
2051 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
2052 Elts.size(), false);
2053 ID.Kind = ValID::t_Constant;
2057 // ValID ::= '<' ConstVector '>' --> Vector.
2058 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2060 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2062 SmallVector<Constant*, 16> Elts;
2063 LocTy FirstEltLoc = Lex.getLoc();
2064 if (ParseGlobalValueVector(Elts) ||
2066 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2067 ParseToken(lltok::greater, "expected end of constant"))
2070 if (isPackedStruct) {
2072 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
2073 ID.Kind = ValID::t_Constant;
2078 return Error(ID.Loc, "constant vector must not be empty");
2080 if (!Elts[0]->getType()->isIntegerTy() &&
2081 !Elts[0]->getType()->isFloatingPointTy())
2082 return Error(FirstEltLoc,
2083 "vector elements must have integer or floating point type");
2085 // Verify that all the vector elements have the same type.
2086 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2087 if (Elts[i]->getType() != Elts[0]->getType())
2088 return Error(FirstEltLoc,
2089 "vector element #" + utostr(i) +
2090 " is not of type '" + Elts[0]->getType()->getDescription());
2092 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
2093 ID.Kind = ValID::t_Constant;
2096 case lltok::lsquare: { // Array Constant
2098 SmallVector<Constant*, 16> Elts;
2099 LocTy FirstEltLoc = Lex.getLoc();
2100 if (ParseGlobalValueVector(Elts) ||
2101 ParseToken(lltok::rsquare, "expected end of array constant"))
2104 // Handle empty element.
2106 // Use undef instead of an array because it's inconvenient to determine
2107 // the element type at this point, there being no elements to examine.
2108 ID.Kind = ValID::t_EmptyArray;
2112 if (!Elts[0]->getType()->isFirstClassType())
2113 return Error(FirstEltLoc, "invalid array element type: " +
2114 Elts[0]->getType()->getDescription());
2116 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2118 // Verify all elements are correct type!
2119 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2120 if (Elts[i]->getType() != Elts[0]->getType())
2121 return Error(FirstEltLoc,
2122 "array element #" + utostr(i) +
2123 " is not of type '" +Elts[0]->getType()->getDescription());
2126 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
2127 ID.Kind = ValID::t_Constant;
2130 case lltok::kw_c: // c "foo"
2132 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
2133 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2134 ID.Kind = ValID::t_Constant;
2137 case lltok::kw_asm: {
2138 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2139 bool HasSideEffect, AlignStack;
2141 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2142 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2143 ParseStringConstant(ID.StrVal) ||
2144 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2145 ParseToken(lltok::StringConstant, "expected constraint string"))
2147 ID.StrVal2 = Lex.getStrVal();
2148 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2149 ID.Kind = ValID::t_InlineAsm;
2153 case lltok::kw_blockaddress: {
2154 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2158 LocTy FnLoc, LabelLoc;
2160 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2162 ParseToken(lltok::comma, "expected comma in block address expression")||
2163 ParseValID(Label) ||
2164 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2167 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2168 return Error(Fn.Loc, "expected function name in blockaddress");
2169 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2170 return Error(Label.Loc, "expected basic block name in blockaddress");
2172 // Make a global variable as a placeholder for this reference.
2173 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2174 false, GlobalValue::InternalLinkage,
2176 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2177 ID.ConstantVal = FwdRef;
2178 ID.Kind = ValID::t_Constant;
2182 case lltok::kw_trunc:
2183 case lltok::kw_zext:
2184 case lltok::kw_sext:
2185 case lltok::kw_fptrunc:
2186 case lltok::kw_fpext:
2187 case lltok::kw_bitcast:
2188 case lltok::kw_uitofp:
2189 case lltok::kw_sitofp:
2190 case lltok::kw_fptoui:
2191 case lltok::kw_fptosi:
2192 case lltok::kw_inttoptr:
2193 case lltok::kw_ptrtoint: {
2194 unsigned Opc = Lex.getUIntVal();
2195 PATypeHolder DestTy(Type::getVoidTy(Context));
2198 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2199 ParseGlobalTypeAndValue(SrcVal) ||
2200 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2201 ParseType(DestTy) ||
2202 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2204 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2205 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2206 SrcVal->getType()->getDescription() + "' to '" +
2207 DestTy->getDescription() + "'");
2208 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2210 ID.Kind = ValID::t_Constant;
2213 case lltok::kw_extractvalue: {
2216 SmallVector<unsigned, 4> Indices;
2217 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2218 ParseGlobalTypeAndValue(Val) ||
2219 ParseIndexList(Indices) ||
2220 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2223 if (!Val->getType()->isAggregateType())
2224 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2225 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
2227 return Error(ID.Loc, "invalid indices for extractvalue");
2229 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
2230 ID.Kind = ValID::t_Constant;
2233 case lltok::kw_insertvalue: {
2235 Constant *Val0, *Val1;
2236 SmallVector<unsigned, 4> Indices;
2237 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2238 ParseGlobalTypeAndValue(Val0) ||
2239 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2240 ParseGlobalTypeAndValue(Val1) ||
2241 ParseIndexList(Indices) ||
2242 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2244 if (!Val0->getType()->isAggregateType())
2245 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2246 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
2248 return Error(ID.Loc, "invalid indices for insertvalue");
2249 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
2250 Indices.data(), Indices.size());
2251 ID.Kind = ValID::t_Constant;
2254 case lltok::kw_icmp:
2255 case lltok::kw_fcmp: {
2256 unsigned PredVal, Opc = Lex.getUIntVal();
2257 Constant *Val0, *Val1;
2259 if (ParseCmpPredicate(PredVal, Opc) ||
2260 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2261 ParseGlobalTypeAndValue(Val0) ||
2262 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2263 ParseGlobalTypeAndValue(Val1) ||
2264 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2267 if (Val0->getType() != Val1->getType())
2268 return Error(ID.Loc, "compare operands must have the same type");
2270 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2272 if (Opc == Instruction::FCmp) {
2273 if (!Val0->getType()->isFPOrFPVectorTy())
2274 return Error(ID.Loc, "fcmp requires floating point operands");
2275 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2277 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2278 if (!Val0->getType()->isIntOrIntVectorTy() &&
2279 !Val0->getType()->isPointerTy())
2280 return Error(ID.Loc, "icmp requires pointer or integer operands");
2281 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2283 ID.Kind = ValID::t_Constant;
2287 // Binary Operators.
2289 case lltok::kw_fadd:
2291 case lltok::kw_fsub:
2293 case lltok::kw_fmul:
2294 case lltok::kw_udiv:
2295 case lltok::kw_sdiv:
2296 case lltok::kw_fdiv:
2297 case lltok::kw_urem:
2298 case lltok::kw_srem:
2299 case lltok::kw_frem: {
2303 unsigned Opc = Lex.getUIntVal();
2304 Constant *Val0, *Val1;
2306 LocTy ModifierLoc = Lex.getLoc();
2307 if (Opc == Instruction::Add ||
2308 Opc == Instruction::Sub ||
2309 Opc == Instruction::Mul) {
2310 if (EatIfPresent(lltok::kw_nuw))
2312 if (EatIfPresent(lltok::kw_nsw)) {
2314 if (EatIfPresent(lltok::kw_nuw))
2317 } else if (Opc == Instruction::SDiv) {
2318 if (EatIfPresent(lltok::kw_exact))
2321 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2322 ParseGlobalTypeAndValue(Val0) ||
2323 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2324 ParseGlobalTypeAndValue(Val1) ||
2325 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2327 if (Val0->getType() != Val1->getType())
2328 return Error(ID.Loc, "operands of constexpr must have same type");
2329 if (!Val0->getType()->isIntOrIntVectorTy()) {
2331 return Error(ModifierLoc, "nuw only applies to integer operations");
2333 return Error(ModifierLoc, "nsw only applies to integer operations");
2335 // Check that the type is valid for the operator.
2337 case Instruction::Add:
2338 case Instruction::Sub:
2339 case Instruction::Mul:
2340 case Instruction::UDiv:
2341 case Instruction::SDiv:
2342 case Instruction::URem:
2343 case Instruction::SRem:
2344 if (!Val0->getType()->isIntOrIntVectorTy())
2345 return Error(ID.Loc, "constexpr requires integer operands");
2347 case Instruction::FAdd:
2348 case Instruction::FSub:
2349 case Instruction::FMul:
2350 case Instruction::FDiv:
2351 case Instruction::FRem:
2352 if (!Val0->getType()->isFPOrFPVectorTy())
2353 return Error(ID.Loc, "constexpr requires fp operands");
2355 default: llvm_unreachable("Unknown binary operator!");
2358 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2359 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2360 if (Exact) Flags |= SDivOperator::IsExact;
2361 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2363 ID.Kind = ValID::t_Constant;
2367 // Logical Operations
2369 case lltok::kw_lshr:
2370 case lltok::kw_ashr:
2373 case lltok::kw_xor: {
2374 unsigned Opc = Lex.getUIntVal();
2375 Constant *Val0, *Val1;
2377 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2378 ParseGlobalTypeAndValue(Val0) ||
2379 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2380 ParseGlobalTypeAndValue(Val1) ||
2381 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2383 if (Val0->getType() != Val1->getType())
2384 return Error(ID.Loc, "operands of constexpr must have same type");
2385 if (!Val0->getType()->isIntOrIntVectorTy())
2386 return Error(ID.Loc,
2387 "constexpr requires integer or integer vector operands");
2388 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2389 ID.Kind = ValID::t_Constant;
2393 case lltok::kw_getelementptr:
2394 case lltok::kw_shufflevector:
2395 case lltok::kw_insertelement:
2396 case lltok::kw_extractelement:
2397 case lltok::kw_select: {
2398 unsigned Opc = Lex.getUIntVal();
2399 SmallVector<Constant*, 16> Elts;
2400 bool InBounds = false;
2402 if (Opc == Instruction::GetElementPtr)
2403 InBounds = EatIfPresent(lltok::kw_inbounds);
2404 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2405 ParseGlobalValueVector(Elts) ||
2406 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2409 if (Opc == Instruction::GetElementPtr) {
2410 if (Elts.size() == 0 || !Elts[0]->getType()->isPointerTy())
2411 return Error(ID.Loc, "getelementptr requires pointer operand");
2413 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2414 (Value**)(Elts.data() + 1),
2416 return Error(ID.Loc, "invalid indices for getelementptr");
2417 ID.ConstantVal = InBounds ?
2418 ConstantExpr::getInBoundsGetElementPtr(Elts[0],
2421 ConstantExpr::getGetElementPtr(Elts[0],
2422 Elts.data() + 1, Elts.size() - 1);
2423 } else if (Opc == Instruction::Select) {
2424 if (Elts.size() != 3)
2425 return Error(ID.Loc, "expected three operands to select");
2426 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2428 return Error(ID.Loc, Reason);
2429 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2430 } else if (Opc == Instruction::ShuffleVector) {
2431 if (Elts.size() != 3)
2432 return Error(ID.Loc, "expected three operands to shufflevector");
2433 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2434 return Error(ID.Loc, "invalid operands to shufflevector");
2436 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2437 } else if (Opc == Instruction::ExtractElement) {
2438 if (Elts.size() != 2)
2439 return Error(ID.Loc, "expected two operands to extractelement");
2440 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2441 return Error(ID.Loc, "invalid extractelement operands");
2442 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2444 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2445 if (Elts.size() != 3)
2446 return Error(ID.Loc, "expected three operands to insertelement");
2447 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2448 return Error(ID.Loc, "invalid insertelement operands");
2450 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2453 ID.Kind = ValID::t_Constant;
2462 /// ParseGlobalValue - Parse a global value with the specified type.
2463 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&C) {
2467 bool Parsed = ParseValID(ID) ||
2468 ConvertValIDToValue(Ty, ID, V, NULL);
2469 if (V && !(C = dyn_cast<Constant>(V)))
2470 return Error(ID.Loc, "global values must be constants");
2474 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2475 PATypeHolder Type(Type::getVoidTy(Context));
2476 return ParseType(Type) ||
2477 ParseGlobalValue(Type, V);
2480 /// ParseGlobalValueVector
2482 /// ::= TypeAndValue (',' TypeAndValue)*
2483 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2485 if (Lex.getKind() == lltok::rbrace ||
2486 Lex.getKind() == lltok::rsquare ||
2487 Lex.getKind() == lltok::greater ||
2488 Lex.getKind() == lltok::rparen)
2492 if (ParseGlobalTypeAndValue(C)) return true;
2495 while (EatIfPresent(lltok::comma)) {
2496 if (ParseGlobalTypeAndValue(C)) return true;
2503 /// ParseMetadataValue
2507 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2508 assert(Lex.getKind() == lltok::exclaim);
2513 if (EatIfPresent(lltok::lbrace)) {
2514 SmallVector<Value*, 16> Elts;
2515 if (ParseMDNodeVector(Elts, PFS) ||
2516 ParseToken(lltok::rbrace, "expected end of metadata node"))
2519 ID.MDNodeVal = MDNode::get(Context, Elts.data(), Elts.size());
2520 ID.Kind = ValID::t_MDNode;
2524 // Standalone metadata reference
2526 if (Lex.getKind() == lltok::APSInt) {
2527 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2528 ID.Kind = ValID::t_MDNode;
2533 // ::= '!' STRINGCONSTANT
2534 if (ParseMDString(ID.MDStringVal)) return true;
2535 ID.Kind = ValID::t_MDString;
2540 //===----------------------------------------------------------------------===//
2541 // Function Parsing.
2542 //===----------------------------------------------------------------------===//
2544 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2545 PerFunctionState *PFS) {
2546 if (Ty->isFunctionTy())
2547 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2550 default: llvm_unreachable("Unknown ValID!");
2551 case ValID::t_LocalID:
2552 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2553 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2555 case ValID::t_LocalName:
2556 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2557 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2559 case ValID::t_InlineAsm: {
2560 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2561 const FunctionType *FTy =
2562 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2563 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2564 return Error(ID.Loc, "invalid type for inline asm constraint string");
2565 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2568 case ValID::t_MDNode:
2569 if (!Ty->isMetadataTy())
2570 return Error(ID.Loc, "metadata value must have metadata type");
2573 case ValID::t_MDString:
2574 if (!Ty->isMetadataTy())
2575 return Error(ID.Loc, "metadata value must have metadata type");
2578 case ValID::t_GlobalName:
2579 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2581 case ValID::t_GlobalID:
2582 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2584 case ValID::t_APSInt:
2585 if (!Ty->isIntegerTy())
2586 return Error(ID.Loc, "integer constant must have integer type");
2587 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2588 V = ConstantInt::get(Context, ID.APSIntVal);
2590 case ValID::t_APFloat:
2591 if (!Ty->isFloatingPointTy() ||
2592 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2593 return Error(ID.Loc, "floating point constant invalid for type");
2595 // The lexer has no type info, so builds all float and double FP constants
2596 // as double. Fix this here. Long double does not need this.
2597 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2600 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2603 V = ConstantFP::get(Context, ID.APFloatVal);
2605 if (V->getType() != Ty)
2606 return Error(ID.Loc, "floating point constant does not have type '" +
2607 Ty->getDescription() + "'");
2611 if (!Ty->isPointerTy())
2612 return Error(ID.Loc, "null must be a pointer type");
2613 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2615 case ValID::t_Undef:
2616 // FIXME: LabelTy should not be a first-class type.
2617 if ((!Ty->isFirstClassType() || Ty->isLabelTy()) &&
2619 return Error(ID.Loc, "invalid type for undef constant");
2620 V = UndefValue::get(Ty);
2622 case ValID::t_EmptyArray:
2623 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2624 return Error(ID.Loc, "invalid empty array initializer");
2625 V = UndefValue::get(Ty);
2628 // FIXME: LabelTy should not be a first-class type.
2629 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2630 return Error(ID.Loc, "invalid type for null constant");
2631 V = Constant::getNullValue(Ty);
2633 case ValID::t_Constant:
2634 if (ID.ConstantVal->getType() != Ty) {
2635 // Allow a constant struct with a single member to be converted
2636 // to a union, if the union has a member which is the same type
2637 // as the struct member.
2638 if (const UnionType* utype = dyn_cast<UnionType>(Ty)) {
2639 return ParseUnionValue(utype, ID, V);
2642 return Error(ID.Loc, "constant expression type mismatch");
2650 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2653 return ParseValID(ID, &PFS) ||
2654 ConvertValIDToValue(Ty, ID, V, &PFS);
2657 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2658 PATypeHolder T(Type::getVoidTy(Context));
2659 return ParseType(T) ||
2660 ParseValue(T, V, PFS);
2663 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2664 PerFunctionState &PFS) {
2667 if (ParseTypeAndValue(V, PFS)) return true;
2668 if (!isa<BasicBlock>(V))
2669 return Error(Loc, "expected a basic block");
2670 BB = cast<BasicBlock>(V);
2674 bool LLParser::ParseUnionValue(const UnionType* utype, ValID &ID, Value *&V) {
2675 if (const StructType* stype = dyn_cast<StructType>(ID.ConstantVal->getType())) {
2676 if (stype->getNumContainedTypes() != 1)
2677 return Error(ID.Loc, "constant expression type mismatch");
2678 int index = utype->getElementTypeIndex(stype->getContainedType(0));
2680 return Error(ID.Loc, "initializer type is not a member of the union");
2682 V = ConstantUnion::get(
2683 utype, cast<Constant>(ID.ConstantVal->getOperand(0)));
2687 return Error(ID.Loc, "constant expression type mismatch");
2692 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2693 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2694 /// OptionalAlign OptGC
2695 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2696 // Parse the linkage.
2697 LocTy LinkageLoc = Lex.getLoc();
2700 unsigned Visibility, RetAttrs;
2702 PATypeHolder RetType(Type::getVoidTy(Context));
2703 LocTy RetTypeLoc = Lex.getLoc();
2704 if (ParseOptionalLinkage(Linkage) ||
2705 ParseOptionalVisibility(Visibility) ||
2706 ParseOptionalCallingConv(CC) ||
2707 ParseOptionalAttrs(RetAttrs, 1) ||
2708 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2711 // Verify that the linkage is ok.
2712 switch ((GlobalValue::LinkageTypes)Linkage) {
2713 case GlobalValue::ExternalLinkage:
2714 break; // always ok.
2715 case GlobalValue::DLLImportLinkage:
2716 case GlobalValue::ExternalWeakLinkage:
2718 return Error(LinkageLoc, "invalid linkage for function definition");
2720 case GlobalValue::PrivateLinkage:
2721 case GlobalValue::LinkerPrivateLinkage:
2722 case GlobalValue::LinkerPrivateWeakLinkage:
2723 case GlobalValue::InternalLinkage:
2724 case GlobalValue::AvailableExternallyLinkage:
2725 case GlobalValue::LinkOnceAnyLinkage:
2726 case GlobalValue::LinkOnceODRLinkage:
2727 case GlobalValue::WeakAnyLinkage:
2728 case GlobalValue::WeakODRLinkage:
2729 case GlobalValue::DLLExportLinkage:
2731 return Error(LinkageLoc, "invalid linkage for function declaration");
2733 case GlobalValue::AppendingLinkage:
2734 case GlobalValue::CommonLinkage:
2735 return Error(LinkageLoc, "invalid function linkage type");
2738 if (!FunctionType::isValidReturnType(RetType) ||
2739 RetType->isOpaqueTy())
2740 return Error(RetTypeLoc, "invalid function return type");
2742 LocTy NameLoc = Lex.getLoc();
2744 std::string FunctionName;
2745 if (Lex.getKind() == lltok::GlobalVar) {
2746 FunctionName = Lex.getStrVal();
2747 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2748 unsigned NameID = Lex.getUIntVal();
2750 if (NameID != NumberedVals.size())
2751 return TokError("function expected to be numbered '%" +
2752 utostr(NumberedVals.size()) + "'");
2754 return TokError("expected function name");
2759 if (Lex.getKind() != lltok::lparen)
2760 return TokError("expected '(' in function argument list");
2762 std::vector<ArgInfo> ArgList;
2765 std::string Section;
2769 if (ParseArgumentList(ArgList, isVarArg, false) ||
2770 ParseOptionalAttrs(FuncAttrs, 2) ||
2771 (EatIfPresent(lltok::kw_section) &&
2772 ParseStringConstant(Section)) ||
2773 ParseOptionalAlignment(Alignment) ||
2774 (EatIfPresent(lltok::kw_gc) &&
2775 ParseStringConstant(GC)))
2778 // If the alignment was parsed as an attribute, move to the alignment field.
2779 if (FuncAttrs & Attribute::Alignment) {
2780 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2781 FuncAttrs &= ~Attribute::Alignment;
2784 // Okay, if we got here, the function is syntactically valid. Convert types
2785 // and do semantic checks.
2786 std::vector<const Type*> ParamTypeList;
2787 SmallVector<AttributeWithIndex, 8> Attrs;
2788 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2790 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2791 if (FuncAttrs & ObsoleteFuncAttrs) {
2792 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2793 FuncAttrs &= ~ObsoleteFuncAttrs;
2796 if (RetAttrs != Attribute::None)
2797 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2799 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2800 ParamTypeList.push_back(ArgList[i].Type);
2801 if (ArgList[i].Attrs != Attribute::None)
2802 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2805 if (FuncAttrs != Attribute::None)
2806 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2808 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2810 if (PAL.paramHasAttr(1, Attribute::StructRet) && !RetType->isVoidTy())
2811 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2813 const FunctionType *FT =
2814 FunctionType::get(RetType, ParamTypeList, isVarArg);
2815 const PointerType *PFT = PointerType::getUnqual(FT);
2818 if (!FunctionName.empty()) {
2819 // If this was a definition of a forward reference, remove the definition
2820 // from the forward reference table and fill in the forward ref.
2821 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2822 ForwardRefVals.find(FunctionName);
2823 if (FRVI != ForwardRefVals.end()) {
2824 Fn = M->getFunction(FunctionName);
2825 if (Fn->getType() != PFT)
2826 return Error(FRVI->second.second, "invalid forward reference to "
2827 "function '" + FunctionName + "' with wrong type!");
2829 ForwardRefVals.erase(FRVI);
2830 } else if ((Fn = M->getFunction(FunctionName))) {
2831 // If this function already exists in the symbol table, then it is
2832 // multiply defined. We accept a few cases for old backwards compat.
2833 // FIXME: Remove this stuff for LLVM 3.0.
2834 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2835 (!Fn->isDeclaration() && isDefine)) {
2836 // If the redefinition has different type or different attributes,
2837 // reject it. If both have bodies, reject it.
2838 return Error(NameLoc, "invalid redefinition of function '" +
2839 FunctionName + "'");
2840 } else if (Fn->isDeclaration()) {
2841 // Make sure to strip off any argument names so we can't get conflicts.
2842 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2846 } else if (M->getNamedValue(FunctionName)) {
2847 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2851 // If this is a definition of a forward referenced function, make sure the
2853 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2854 = ForwardRefValIDs.find(NumberedVals.size());
2855 if (I != ForwardRefValIDs.end()) {
2856 Fn = cast<Function>(I->second.first);
2857 if (Fn->getType() != PFT)
2858 return Error(NameLoc, "type of definition and forward reference of '@" +
2859 utostr(NumberedVals.size()) +"' disagree");
2860 ForwardRefValIDs.erase(I);
2865 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2866 else // Move the forward-reference to the correct spot in the module.
2867 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2869 if (FunctionName.empty())
2870 NumberedVals.push_back(Fn);
2872 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2873 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2874 Fn->setCallingConv(CC);
2875 Fn->setAttributes(PAL);
2876 Fn->setAlignment(Alignment);
2877 Fn->setSection(Section);
2878 if (!GC.empty()) Fn->setGC(GC.c_str());
2880 // Add all of the arguments we parsed to the function.
2881 Function::arg_iterator ArgIt = Fn->arg_begin();
2882 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2883 // If we run out of arguments in the Function prototype, exit early.
2884 // FIXME: REMOVE THIS IN LLVM 3.0, this is just for the mismatch case above.
2885 if (ArgIt == Fn->arg_end()) break;
2887 // If the argument has a name, insert it into the argument symbol table.
2888 if (ArgList[i].Name.empty()) continue;
2890 // Set the name, if it conflicted, it will be auto-renamed.
2891 ArgIt->setName(ArgList[i].Name);
2893 if (ArgIt->getNameStr() != ArgList[i].Name)
2894 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2895 ArgList[i].Name + "'");
2902 /// ParseFunctionBody
2903 /// ::= '{' BasicBlock+ '}'
2904 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2906 bool LLParser::ParseFunctionBody(Function &Fn) {
2907 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2908 return TokError("expected '{' in function body");
2909 Lex.Lex(); // eat the {.
2911 int FunctionNumber = -1;
2912 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2914 PerFunctionState PFS(*this, Fn, FunctionNumber);
2916 // We need at least one basic block.
2917 if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_end)
2918 return TokError("function body requires at least one basic block");
2920 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2921 if (ParseBasicBlock(PFS)) return true;
2926 // Verify function is ok.
2927 return PFS.FinishFunction();
2931 /// ::= LabelStr? Instruction*
2932 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2933 // If this basic block starts out with a name, remember it.
2935 LocTy NameLoc = Lex.getLoc();
2936 if (Lex.getKind() == lltok::LabelStr) {
2937 Name = Lex.getStrVal();
2941 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2942 if (BB == 0) return true;
2944 std::string NameStr;
2946 // Parse the instructions in this block until we get a terminator.
2948 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2950 // This instruction may have three possibilities for a name: a) none
2951 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2952 LocTy NameLoc = Lex.getLoc();
2956 if (Lex.getKind() == lltok::LocalVarID) {
2957 NameID = Lex.getUIntVal();
2959 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2961 } else if (Lex.getKind() == lltok::LocalVar ||
2962 // FIXME: REMOVE IN LLVM 3.0
2963 Lex.getKind() == lltok::StringConstant) {
2964 NameStr = Lex.getStrVal();
2966 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2970 switch (ParseInstruction(Inst, BB, PFS)) {
2971 default: assert(0 && "Unknown ParseInstruction result!");
2972 case InstError: return true;
2974 BB->getInstList().push_back(Inst);
2976 // With a normal result, we check to see if the instruction is followed by
2977 // a comma and metadata.
2978 if (EatIfPresent(lltok::comma))
2979 if (ParseInstructionMetadata(Inst))
2982 case InstExtraComma:
2983 BB->getInstList().push_back(Inst);
2985 // If the instruction parser ate an extra comma at the end of it, it
2986 // *must* be followed by metadata.
2987 if (ParseInstructionMetadata(Inst))
2992 // Set the name on the instruction.
2993 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2994 } while (!isa<TerminatorInst>(Inst));
2999 //===----------------------------------------------------------------------===//
3000 // Instruction Parsing.
3001 //===----------------------------------------------------------------------===//
3003 /// ParseInstruction - Parse one of the many different instructions.
3005 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3006 PerFunctionState &PFS) {
3007 lltok::Kind Token = Lex.getKind();
3008 if (Token == lltok::Eof)
3009 return TokError("found end of file when expecting more instructions");
3010 LocTy Loc = Lex.getLoc();
3011 unsigned KeywordVal = Lex.getUIntVal();
3012 Lex.Lex(); // Eat the keyword.
3015 default: return Error(Loc, "expected instruction opcode");
3016 // Terminator Instructions.
3017 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
3018 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3019 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3020 case lltok::kw_br: return ParseBr(Inst, PFS);
3021 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3022 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3023 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3024 // Binary Operators.
3027 case lltok::kw_mul: {
3030 LocTy ModifierLoc = Lex.getLoc();
3031 if (EatIfPresent(lltok::kw_nuw))
3033 if (EatIfPresent(lltok::kw_nsw)) {
3035 if (EatIfPresent(lltok::kw_nuw))
3038 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3040 if (!Inst->getType()->isIntOrIntVectorTy()) {
3042 return Error(ModifierLoc, "nuw only applies to integer operations");
3044 return Error(ModifierLoc, "nsw only applies to integer operations");
3047 cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3049 cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3053 case lltok::kw_fadd:
3054 case lltok::kw_fsub:
3055 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3057 case lltok::kw_sdiv: {
3059 if (EatIfPresent(lltok::kw_exact))
3061 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
3064 cast<BinaryOperator>(Inst)->setIsExact(true);
3068 case lltok::kw_udiv:
3069 case lltok::kw_urem:
3070 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3071 case lltok::kw_fdiv:
3072 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3074 case lltok::kw_lshr:
3075 case lltok::kw_ashr:
3078 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3079 case lltok::kw_icmp:
3080 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3082 case lltok::kw_trunc:
3083 case lltok::kw_zext:
3084 case lltok::kw_sext:
3085 case lltok::kw_fptrunc:
3086 case lltok::kw_fpext:
3087 case lltok::kw_bitcast:
3088 case lltok::kw_uitofp:
3089 case lltok::kw_sitofp:
3090 case lltok::kw_fptoui:
3091 case lltok::kw_fptosi:
3092 case lltok::kw_inttoptr:
3093 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3095 case lltok::kw_select: return ParseSelect(Inst, PFS);
3096 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3097 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3098 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3099 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3100 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3101 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3102 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3104 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3105 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, BB, false);
3106 case lltok::kw_free: return ParseFree(Inst, PFS, BB);
3107 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
3108 case lltok::kw_store: return ParseStore(Inst, PFS, false);
3109 case lltok::kw_volatile:
3110 if (EatIfPresent(lltok::kw_load))
3111 return ParseLoad(Inst, PFS, true);
3112 else if (EatIfPresent(lltok::kw_store))
3113 return ParseStore(Inst, PFS, true);
3115 return TokError("expected 'load' or 'store'");
3116 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
3117 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3118 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3119 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3123 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3124 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3125 if (Opc == Instruction::FCmp) {
3126 switch (Lex.getKind()) {
3127 default: TokError("expected fcmp predicate (e.g. 'oeq')");
3128 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3129 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3130 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3131 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3132 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3133 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3134 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3135 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3136 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3137 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3138 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3139 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3140 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3141 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3142 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3143 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3146 switch (Lex.getKind()) {
3147 default: TokError("expected icmp predicate (e.g. 'eq')");
3148 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3149 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3150 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3151 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3152 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3153 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3154 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3155 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3156 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3157 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3164 //===----------------------------------------------------------------------===//
3165 // Terminator Instructions.
3166 //===----------------------------------------------------------------------===//
3168 /// ParseRet - Parse a return instruction.
3169 /// ::= 'ret' void (',' !dbg, !1)*
3170 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3171 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ (',' !dbg, !1)*
3172 /// [[obsolete: LLVM 3.0]]
3173 int LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3174 PerFunctionState &PFS) {
3175 PATypeHolder Ty(Type::getVoidTy(Context));
3176 if (ParseType(Ty, true /*void allowed*/)) return true;
3178 if (Ty->isVoidTy()) {
3179 Inst = ReturnInst::Create(Context);
3184 if (ParseValue(Ty, RV, PFS)) return true;
3186 bool ExtraComma = false;
3187 if (EatIfPresent(lltok::comma)) {
3188 // Parse optional custom metadata, e.g. !dbg
3189 if (Lex.getKind() == lltok::MetadataVar) {
3192 // The normal case is one return value.
3193 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring
3194 // use of 'ret {i32,i32} {i32 1, i32 2}'
3195 SmallVector<Value*, 8> RVs;
3199 // If optional custom metadata, e.g. !dbg is seen then this is the
3201 if (Lex.getKind() == lltok::MetadataVar)
3203 if (ParseTypeAndValue(RV, PFS)) return true;
3205 } while (EatIfPresent(lltok::comma));
3207 RV = UndefValue::get(PFS.getFunction().getReturnType());
3208 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
3209 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
3210 BB->getInstList().push_back(I);
3216 Inst = ReturnInst::Create(Context, RV);
3217 return ExtraComma ? InstExtraComma : InstNormal;
3222 /// ::= 'br' TypeAndValue
3223 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3224 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3227 BasicBlock *Op1, *Op2;
3228 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3230 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3231 Inst = BranchInst::Create(BB);
3235 if (Op0->getType() != Type::getInt1Ty(Context))
3236 return Error(Loc, "branch condition must have 'i1' type");
3238 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3239 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3240 ParseToken(lltok::comma, "expected ',' after true destination") ||
3241 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3244 Inst = BranchInst::Create(Op1, Op2, Op0);
3250 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3252 /// ::= (TypeAndValue ',' TypeAndValue)*
3253 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3254 LocTy CondLoc, BBLoc;
3256 BasicBlock *DefaultBB;
3257 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3258 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3259 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3260 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3263 if (!Cond->getType()->isIntegerTy())
3264 return Error(CondLoc, "switch condition must have integer type");
3266 // Parse the jump table pairs.
3267 SmallPtrSet<Value*, 32> SeenCases;
3268 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3269 while (Lex.getKind() != lltok::rsquare) {
3273 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3274 ParseToken(lltok::comma, "expected ',' after case value") ||
3275 ParseTypeAndBasicBlock(DestBB, PFS))
3278 if (!SeenCases.insert(Constant))
3279 return Error(CondLoc, "duplicate case value in switch");
3280 if (!isa<ConstantInt>(Constant))
3281 return Error(CondLoc, "case value is not a constant integer");
3283 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3286 Lex.Lex(); // Eat the ']'.
3288 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3289 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3290 SI->addCase(Table[i].first, Table[i].second);
3297 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3298 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3301 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3302 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3303 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3306 if (!Address->getType()->isPointerTy())
3307 return Error(AddrLoc, "indirectbr address must have pointer type");
3309 // Parse the destination list.
3310 SmallVector<BasicBlock*, 16> DestList;
3312 if (Lex.getKind() != lltok::rsquare) {
3314 if (ParseTypeAndBasicBlock(DestBB, PFS))
3316 DestList.push_back(DestBB);
3318 while (EatIfPresent(lltok::comma)) {
3319 if (ParseTypeAndBasicBlock(DestBB, PFS))
3321 DestList.push_back(DestBB);
3325 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3328 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3329 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3330 IBI->addDestination(DestList[i]);
3337 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3338 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3339 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3340 LocTy CallLoc = Lex.getLoc();
3341 unsigned RetAttrs, FnAttrs;
3343 PATypeHolder RetType(Type::getVoidTy(Context));
3346 SmallVector<ParamInfo, 16> ArgList;
3348 BasicBlock *NormalBB, *UnwindBB;
3349 if (ParseOptionalCallingConv(CC) ||
3350 ParseOptionalAttrs(RetAttrs, 1) ||
3351 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3352 ParseValID(CalleeID) ||
3353 ParseParameterList(ArgList, PFS) ||
3354 ParseOptionalAttrs(FnAttrs, 2) ||
3355 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3356 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3357 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3358 ParseTypeAndBasicBlock(UnwindBB, PFS))
3361 // If RetType is a non-function pointer type, then this is the short syntax
3362 // for the call, which means that RetType is just the return type. Infer the
3363 // rest of the function argument types from the arguments that are present.
3364 const PointerType *PFTy = 0;
3365 const FunctionType *Ty = 0;
3366 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3367 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3368 // Pull out the types of all of the arguments...
3369 std::vector<const Type*> ParamTypes;
3370 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3371 ParamTypes.push_back(ArgList[i].V->getType());
3373 if (!FunctionType::isValidReturnType(RetType))
3374 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3376 Ty = FunctionType::get(RetType, ParamTypes, false);
3377 PFTy = PointerType::getUnqual(Ty);
3380 // Look up the callee.
3382 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3384 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3385 // function attributes.
3386 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3387 if (FnAttrs & ObsoleteFuncAttrs) {
3388 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3389 FnAttrs &= ~ObsoleteFuncAttrs;
3392 // Set up the Attributes for the function.
3393 SmallVector<AttributeWithIndex, 8> Attrs;
3394 if (RetAttrs != Attribute::None)
3395 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3397 SmallVector<Value*, 8> Args;
3399 // Loop through FunctionType's arguments and ensure they are specified
3400 // correctly. Also, gather any parameter attributes.
3401 FunctionType::param_iterator I = Ty->param_begin();
3402 FunctionType::param_iterator E = Ty->param_end();
3403 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3404 const Type *ExpectedTy = 0;
3407 } else if (!Ty->isVarArg()) {
3408 return Error(ArgList[i].Loc, "too many arguments specified");
3411 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3412 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3413 ExpectedTy->getDescription() + "'");
3414 Args.push_back(ArgList[i].V);
3415 if (ArgList[i].Attrs != Attribute::None)
3416 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3420 return Error(CallLoc, "not enough parameters specified for call");
3422 if (FnAttrs != Attribute::None)
3423 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3425 // Finish off the Attributes and check them
3426 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3428 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB,
3429 Args.begin(), Args.end());
3430 II->setCallingConv(CC);
3431 II->setAttributes(PAL);
3438 //===----------------------------------------------------------------------===//
3439 // Binary Operators.
3440 //===----------------------------------------------------------------------===//
3443 /// ::= ArithmeticOps TypeAndValue ',' Value
3445 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3446 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3447 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3448 unsigned Opc, unsigned OperandType) {
3449 LocTy Loc; Value *LHS, *RHS;
3450 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3451 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3452 ParseValue(LHS->getType(), RHS, PFS))
3456 switch (OperandType) {
3457 default: llvm_unreachable("Unknown operand type!");
3458 case 0: // int or FP.
3459 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3460 LHS->getType()->isFPOrFPVectorTy();
3462 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3463 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3467 return Error(Loc, "invalid operand type for instruction");
3469 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3474 /// ::= ArithmeticOps TypeAndValue ',' Value {
3475 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3477 LocTy Loc; Value *LHS, *RHS;
3478 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3479 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3480 ParseValue(LHS->getType(), RHS, PFS))
3483 if (!LHS->getType()->isIntOrIntVectorTy())
3484 return Error(Loc,"instruction requires integer or integer vector operands");
3486 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3492 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3493 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3494 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3496 // Parse the integer/fp comparison predicate.
3500 if (ParseCmpPredicate(Pred, Opc) ||
3501 ParseTypeAndValue(LHS, Loc, PFS) ||
3502 ParseToken(lltok::comma, "expected ',' after compare value") ||
3503 ParseValue(LHS->getType(), RHS, PFS))
3506 if (Opc == Instruction::FCmp) {
3507 if (!LHS->getType()->isFPOrFPVectorTy())
3508 return Error(Loc, "fcmp requires floating point operands");
3509 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3511 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3512 if (!LHS->getType()->isIntOrIntVectorTy() &&
3513 !LHS->getType()->isPointerTy())
3514 return Error(Loc, "icmp requires integer operands");
3515 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3520 //===----------------------------------------------------------------------===//
3521 // Other Instructions.
3522 //===----------------------------------------------------------------------===//
3526 /// ::= CastOpc TypeAndValue 'to' Type
3527 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3529 LocTy Loc; Value *Op;
3530 PATypeHolder DestTy(Type::getVoidTy(Context));
3531 if (ParseTypeAndValue(Op, Loc, PFS) ||
3532 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3536 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3537 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3538 return Error(Loc, "invalid cast opcode for cast from '" +
3539 Op->getType()->getDescription() + "' to '" +
3540 DestTy->getDescription() + "'");
3542 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3547 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3548 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3550 Value *Op0, *Op1, *Op2;
3551 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3552 ParseToken(lltok::comma, "expected ',' after select condition") ||
3553 ParseTypeAndValue(Op1, PFS) ||
3554 ParseToken(lltok::comma, "expected ',' after select value") ||
3555 ParseTypeAndValue(Op2, PFS))
3558 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3559 return Error(Loc, Reason);
3561 Inst = SelectInst::Create(Op0, Op1, Op2);
3566 /// ::= 'va_arg' TypeAndValue ',' Type
3567 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3569 PATypeHolder EltTy(Type::getVoidTy(Context));
3571 if (ParseTypeAndValue(Op, PFS) ||
3572 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3573 ParseType(EltTy, TypeLoc))
3576 if (!EltTy->isFirstClassType())
3577 return Error(TypeLoc, "va_arg requires operand with first class type");
3579 Inst = new VAArgInst(Op, EltTy);
3583 /// ParseExtractElement
3584 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3585 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3588 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3589 ParseToken(lltok::comma, "expected ',' after extract value") ||
3590 ParseTypeAndValue(Op1, PFS))
3593 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3594 return Error(Loc, "invalid extractelement operands");
3596 Inst = ExtractElementInst::Create(Op0, Op1);
3600 /// ParseInsertElement
3601 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3602 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3604 Value *Op0, *Op1, *Op2;
3605 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3606 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3607 ParseTypeAndValue(Op1, PFS) ||
3608 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3609 ParseTypeAndValue(Op2, PFS))
3612 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3613 return Error(Loc, "invalid insertelement operands");
3615 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3619 /// ParseShuffleVector
3620 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3621 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3623 Value *Op0, *Op1, *Op2;
3624 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3625 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3626 ParseTypeAndValue(Op1, PFS) ||
3627 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3628 ParseTypeAndValue(Op2, PFS))
3631 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3632 return Error(Loc, "invalid extractelement operands");
3634 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3639 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3640 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3641 PATypeHolder Ty(Type::getVoidTy(Context));
3643 LocTy TypeLoc = Lex.getLoc();
3645 if (ParseType(Ty) ||
3646 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3647 ParseValue(Ty, Op0, PFS) ||
3648 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3649 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3650 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3653 bool AteExtraComma = false;
3654 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3656 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3658 if (!EatIfPresent(lltok::comma))
3661 if (Lex.getKind() == lltok::MetadataVar) {
3662 AteExtraComma = true;
3666 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3667 ParseValue(Ty, Op0, PFS) ||
3668 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3669 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3670 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3674 if (!Ty->isFirstClassType())
3675 return Error(TypeLoc, "phi node must have first class type");
3677 PHINode *PN = PHINode::Create(Ty);
3678 PN->reserveOperandSpace(PHIVals.size());
3679 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3680 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3682 return AteExtraComma ? InstExtraComma : InstNormal;
3686 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3687 /// ParameterList OptionalAttrs
3688 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3690 unsigned RetAttrs, FnAttrs;
3692 PATypeHolder RetType(Type::getVoidTy(Context));
3695 SmallVector<ParamInfo, 16> ArgList;
3696 LocTy CallLoc = Lex.getLoc();
3698 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3699 ParseOptionalCallingConv(CC) ||
3700 ParseOptionalAttrs(RetAttrs, 1) ||
3701 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3702 ParseValID(CalleeID) ||
3703 ParseParameterList(ArgList, PFS) ||
3704 ParseOptionalAttrs(FnAttrs, 2))
3707 // If RetType is a non-function pointer type, then this is the short syntax
3708 // for the call, which means that RetType is just the return type. Infer the
3709 // rest of the function argument types from the arguments that are present.
3710 const PointerType *PFTy = 0;
3711 const FunctionType *Ty = 0;
3712 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3713 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3714 // Pull out the types of all of the arguments...
3715 std::vector<const Type*> ParamTypes;
3716 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3717 ParamTypes.push_back(ArgList[i].V->getType());
3719 if (!FunctionType::isValidReturnType(RetType))
3720 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3722 Ty = FunctionType::get(RetType, ParamTypes, false);
3723 PFTy = PointerType::getUnqual(Ty);
3726 // Look up the callee.
3728 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3730 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3731 // function attributes.
3732 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3733 if (FnAttrs & ObsoleteFuncAttrs) {
3734 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3735 FnAttrs &= ~ObsoleteFuncAttrs;
3738 // Set up the Attributes for the function.
3739 SmallVector<AttributeWithIndex, 8> Attrs;
3740 if (RetAttrs != Attribute::None)
3741 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3743 SmallVector<Value*, 8> Args;
3745 // Loop through FunctionType's arguments and ensure they are specified
3746 // correctly. Also, gather any parameter attributes.
3747 FunctionType::param_iterator I = Ty->param_begin();
3748 FunctionType::param_iterator E = Ty->param_end();
3749 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3750 const Type *ExpectedTy = 0;
3753 } else if (!Ty->isVarArg()) {
3754 return Error(ArgList[i].Loc, "too many arguments specified");
3757 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3758 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3759 ExpectedTy->getDescription() + "'");
3760 Args.push_back(ArgList[i].V);
3761 if (ArgList[i].Attrs != Attribute::None)
3762 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3766 return Error(CallLoc, "not enough parameters specified for call");
3768 if (FnAttrs != Attribute::None)
3769 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3771 // Finish off the Attributes and check them
3772 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3774 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3775 CI->setTailCall(isTail);
3776 CI->setCallingConv(CC);
3777 CI->setAttributes(PAL);
3782 //===----------------------------------------------------------------------===//
3783 // Memory Instructions.
3784 //===----------------------------------------------------------------------===//
3787 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalInfo)?
3788 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3789 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3790 BasicBlock* BB, bool isAlloca) {
3791 PATypeHolder Ty(Type::getVoidTy(Context));
3794 unsigned Alignment = 0;
3795 if (ParseType(Ty)) return true;
3797 bool AteExtraComma = false;
3798 if (EatIfPresent(lltok::comma)) {
3799 if (Lex.getKind() == lltok::kw_align) {
3800 if (ParseOptionalAlignment(Alignment)) return true;
3801 } else if (Lex.getKind() == lltok::MetadataVar) {
3802 AteExtraComma = true;
3804 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3805 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3810 if (Size && !Size->getType()->isIntegerTy())
3811 return Error(SizeLoc, "element count must have integer type");
3814 Inst = new AllocaInst(Ty, Size, Alignment);
3815 return AteExtraComma ? InstExtraComma : InstNormal;
3818 // Autoupgrade old malloc instruction to malloc call.
3819 // FIXME: Remove in LLVM 3.0.
3820 if (Size && !Size->getType()->isIntegerTy(32))
3821 return Error(SizeLoc, "element count must be i32");
3822 const Type *IntPtrTy = Type::getInt32Ty(Context);
3823 Constant *AllocSize = ConstantExpr::getSizeOf(Ty);
3824 AllocSize = ConstantExpr::getTruncOrBitCast(AllocSize, IntPtrTy);
3826 // Prototype malloc as "void *(int32)".
3827 // This function is renamed as "malloc" in ValidateEndOfModule().
3828 MallocF = cast<Function>(
3829 M->getOrInsertFunction("", Type::getInt8PtrTy(Context), IntPtrTy, NULL));
3830 Inst = CallInst::CreateMalloc(BB, IntPtrTy, Ty, AllocSize, Size, MallocF);
3831 return AteExtraComma ? InstExtraComma : InstNormal;
3835 /// ::= 'free' TypeAndValue
3836 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS,
3838 Value *Val; LocTy Loc;
3839 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3840 if (!Val->getType()->isPointerTy())
3841 return Error(Loc, "operand to free must be a pointer");
3842 Inst = CallInst::CreateFree(Val, BB);
3847 /// ::= 'volatile'? 'load' TypeAndValue (',' OptionalInfo)?
3848 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3850 Value *Val; LocTy Loc;
3851 unsigned Alignment = 0;
3852 bool AteExtraComma = false;
3853 if (ParseTypeAndValue(Val, Loc, PFS) ||
3854 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3857 if (!Val->getType()->isPointerTy() ||
3858 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3859 return Error(Loc, "load operand must be a pointer to a first class type");
3861 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3862 return AteExtraComma ? InstExtraComma : InstNormal;
3866 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3867 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3869 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3870 unsigned Alignment = 0;
3871 bool AteExtraComma = false;
3872 if (ParseTypeAndValue(Val, Loc, PFS) ||
3873 ParseToken(lltok::comma, "expected ',' after store operand") ||
3874 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3875 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3878 if (!Ptr->getType()->isPointerTy())
3879 return Error(PtrLoc, "store operand must be a pointer");
3880 if (!Val->getType()->isFirstClassType())
3881 return Error(Loc, "store operand must be a first class value");
3882 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3883 return Error(Loc, "stored value and pointer type do not match");
3885 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3886 return AteExtraComma ? InstExtraComma : InstNormal;
3890 /// ::= 'getresult' TypeAndValue ',' i32
3891 /// FIXME: Remove support for getresult in LLVM 3.0
3892 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3893 Value *Val; LocTy ValLoc, EltLoc;
3895 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3896 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3897 ParseUInt32(Element, EltLoc))
3900 if (!Val->getType()->isStructTy() && !Val->getType()->isArrayTy())
3901 return Error(ValLoc, "getresult inst requires an aggregate operand");
3902 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3903 return Error(EltLoc, "invalid getresult index for value");
3904 Inst = ExtractValueInst::Create(Val, Element);
3908 /// ParseGetElementPtr
3909 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3910 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3911 Value *Ptr, *Val; LocTy Loc, EltLoc;
3913 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3915 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3917 if (!Ptr->getType()->isPointerTy())
3918 return Error(Loc, "base of getelementptr must be a pointer");
3920 SmallVector<Value*, 16> Indices;
3921 bool AteExtraComma = false;
3922 while (EatIfPresent(lltok::comma)) {
3923 if (Lex.getKind() == lltok::MetadataVar) {
3924 AteExtraComma = true;
3927 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3928 if (!Val->getType()->isIntegerTy())
3929 return Error(EltLoc, "getelementptr index must be an integer");
3930 Indices.push_back(Val);
3933 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3934 Indices.begin(), Indices.end()))
3935 return Error(Loc, "invalid getelementptr indices");
3936 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3938 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3939 return AteExtraComma ? InstExtraComma : InstNormal;
3942 /// ParseExtractValue
3943 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3944 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3945 Value *Val; LocTy Loc;
3946 SmallVector<unsigned, 4> Indices;
3948 if (ParseTypeAndValue(Val, Loc, PFS) ||
3949 ParseIndexList(Indices, AteExtraComma))
3952 if (!Val->getType()->isAggregateType())
3953 return Error(Loc, "extractvalue operand must be aggregate type");
3955 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3957 return Error(Loc, "invalid indices for extractvalue");
3958 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3959 return AteExtraComma ? InstExtraComma : InstNormal;
3962 /// ParseInsertValue
3963 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3964 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3965 Value *Val0, *Val1; LocTy Loc0, Loc1;
3966 SmallVector<unsigned, 4> Indices;
3968 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3969 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3970 ParseTypeAndValue(Val1, Loc1, PFS) ||
3971 ParseIndexList(Indices, AteExtraComma))
3974 if (!Val0->getType()->isAggregateType())
3975 return Error(Loc0, "insertvalue operand must be aggregate type");
3977 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3979 return Error(Loc0, "invalid indices for insertvalue");
3980 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3981 return AteExtraComma ? InstExtraComma : InstNormal;
3984 //===----------------------------------------------------------------------===//
3985 // Embedded metadata.
3986 //===----------------------------------------------------------------------===//
3988 /// ParseMDNodeVector
3989 /// ::= Element (',' Element)*
3991 /// ::= 'null' | TypeAndValue
3992 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
3993 PerFunctionState *PFS) {
3994 // Check for an empty list.
3995 if (Lex.getKind() == lltok::rbrace)
3999 // Null is a special case since it is typeless.
4000 if (EatIfPresent(lltok::kw_null)) {
4006 PATypeHolder Ty(Type::getVoidTy(Context));
4008 if (ParseType(Ty) || ParseValID(ID, PFS) ||
4009 ConvertValIDToValue(Ty, ID, V, PFS))
4013 } while (EatIfPresent(lltok::comma));