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/Support/ErrorHandling.h"
26 #include "llvm/Support/raw_ostream.h"
29 static std::string getTypeString(Type *T) {
31 raw_string_ostream Tmp(Result);
36 /// Run: module ::= toplevelentity*
37 bool LLParser::Run() {
41 return ParseTopLevelEntities() ||
42 ValidateEndOfModule();
45 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
47 bool LLParser::ValidateEndOfModule() {
48 // Handle any instruction metadata forward references.
49 if (!ForwardRefInstMetadata.empty()) {
50 for (DenseMap<Instruction*, std::vector<MDRef> >::iterator
51 I = ForwardRefInstMetadata.begin(), E = ForwardRefInstMetadata.end();
53 Instruction *Inst = I->first;
54 const std::vector<MDRef> &MDList = I->second;
56 for (unsigned i = 0, e = MDList.size(); i != e; ++i) {
57 unsigned SlotNo = MDList[i].MDSlot;
59 if (SlotNo >= NumberedMetadata.size() || NumberedMetadata[SlotNo] == 0)
60 return Error(MDList[i].Loc, "use of undefined metadata '!" +
62 Inst->setMetadata(MDList[i].MDKind, NumberedMetadata[SlotNo]);
65 ForwardRefInstMetadata.clear();
69 // If there are entries in ForwardRefBlockAddresses at this point, they are
70 // references after the function was defined. Resolve those now.
71 while (!ForwardRefBlockAddresses.empty()) {
72 // Okay, we are referencing an already-parsed function, resolve them now.
74 const ValID &Fn = ForwardRefBlockAddresses.begin()->first;
75 if (Fn.Kind == ValID::t_GlobalName)
76 TheFn = M->getFunction(Fn.StrVal);
77 else if (Fn.UIntVal < NumberedVals.size())
78 TheFn = dyn_cast<Function>(NumberedVals[Fn.UIntVal]);
81 return Error(Fn.Loc, "unknown function referenced by blockaddress");
83 // Resolve all these references.
84 if (ResolveForwardRefBlockAddresses(TheFn,
85 ForwardRefBlockAddresses.begin()->second,
89 ForwardRefBlockAddresses.erase(ForwardRefBlockAddresses.begin());
92 for (unsigned i = 0, e = NumberedTypes.size(); i != e; ++i)
93 if (NumberedTypes[i].second.isValid())
94 return Error(NumberedTypes[i].second,
95 "use of undefined type '%" + Twine(i) + "'");
97 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
98 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
99 if (I->second.second.isValid())
100 return Error(I->second.second,
101 "use of undefined type named '" + I->getKey() + "'");
103 if (!ForwardRefVals.empty())
104 return Error(ForwardRefVals.begin()->second.second,
105 "use of undefined value '@" + ForwardRefVals.begin()->first +
108 if (!ForwardRefValIDs.empty())
109 return Error(ForwardRefValIDs.begin()->second.second,
110 "use of undefined value '@" +
111 Twine(ForwardRefValIDs.begin()->first) + "'");
113 if (!ForwardRefMDNodes.empty())
114 return Error(ForwardRefMDNodes.begin()->second.second,
115 "use of undefined metadata '!" +
116 Twine(ForwardRefMDNodes.begin()->first) + "'");
119 // Look for intrinsic functions and CallInst that need to be upgraded
120 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
121 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
126 bool LLParser::ResolveForwardRefBlockAddresses(Function *TheFn,
127 std::vector<std::pair<ValID, GlobalValue*> > &Refs,
128 PerFunctionState *PFS) {
129 // Loop over all the references, resolving them.
130 for (unsigned i = 0, e = Refs.size(); i != e; ++i) {
133 if (Refs[i].first.Kind == ValID::t_LocalName)
134 Res = PFS->GetBB(Refs[i].first.StrVal, Refs[i].first.Loc);
136 Res = PFS->GetBB(Refs[i].first.UIntVal, Refs[i].first.Loc);
137 } else if (Refs[i].first.Kind == ValID::t_LocalID) {
138 return Error(Refs[i].first.Loc,
139 "cannot take address of numeric label after the function is defined");
141 Res = dyn_cast_or_null<BasicBlock>(
142 TheFn->getValueSymbolTable().lookup(Refs[i].first.StrVal));
146 return Error(Refs[i].first.Loc,
147 "referenced value is not a basic block");
149 // Get the BlockAddress for this and update references to use it.
150 BlockAddress *BA = BlockAddress::get(TheFn, Res);
151 Refs[i].second->replaceAllUsesWith(BA);
152 Refs[i].second->eraseFromParent();
158 //===----------------------------------------------------------------------===//
159 // Top-Level Entities
160 //===----------------------------------------------------------------------===//
162 bool LLParser::ParseTopLevelEntities() {
164 switch (Lex.getKind()) {
165 default: return TokError("expected top-level entity");
166 case lltok::Eof: return false;
167 case lltok::kw_declare: if (ParseDeclare()) return true; break;
168 case lltok::kw_define: if (ParseDefine()) return true; break;
169 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
170 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
171 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
172 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
173 case lltok::LocalVar: if (ParseNamedType()) return true; break;
174 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
175 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
176 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
177 case lltok::MetadataVar: if (ParseNamedMetadata()) return true; break;
179 // The Global variable production with no name can have many different
180 // optional leading prefixes, the production is:
181 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
182 // OptionalAddrSpace OptionalUnNammedAddr
183 // ('constant'|'global') ...
184 case lltok::kw_private: // OptionalLinkage
185 case lltok::kw_linker_private: // OptionalLinkage
186 case lltok::kw_linker_private_weak: // OptionalLinkage
187 case lltok::kw_linker_private_weak_def_auto: // OptionalLinkage
188 case lltok::kw_internal: // OptionalLinkage
189 case lltok::kw_weak: // OptionalLinkage
190 case lltok::kw_weak_odr: // OptionalLinkage
191 case lltok::kw_linkonce: // OptionalLinkage
192 case lltok::kw_linkonce_odr: // OptionalLinkage
193 case lltok::kw_appending: // OptionalLinkage
194 case lltok::kw_dllexport: // OptionalLinkage
195 case lltok::kw_common: // OptionalLinkage
196 case lltok::kw_dllimport: // OptionalLinkage
197 case lltok::kw_extern_weak: // OptionalLinkage
198 case lltok::kw_external: { // OptionalLinkage
199 unsigned Linkage, Visibility;
200 if (ParseOptionalLinkage(Linkage) ||
201 ParseOptionalVisibility(Visibility) ||
202 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
206 case lltok::kw_default: // OptionalVisibility
207 case lltok::kw_hidden: // OptionalVisibility
208 case lltok::kw_protected: { // OptionalVisibility
210 if (ParseOptionalVisibility(Visibility) ||
211 ParseGlobal("", SMLoc(), 0, false, Visibility))
216 case lltok::kw_thread_local: // OptionalThreadLocal
217 case lltok::kw_addrspace: // OptionalAddrSpace
218 case lltok::kw_constant: // GlobalType
219 case lltok::kw_global: // GlobalType
220 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
228 /// ::= 'module' 'asm' STRINGCONSTANT
229 bool LLParser::ParseModuleAsm() {
230 assert(Lex.getKind() == lltok::kw_module);
234 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
235 ParseStringConstant(AsmStr)) return true;
237 M->appendModuleInlineAsm(AsmStr);
242 /// ::= 'target' 'triple' '=' STRINGCONSTANT
243 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
244 bool LLParser::ParseTargetDefinition() {
245 assert(Lex.getKind() == lltok::kw_target);
248 default: return TokError("unknown target property");
249 case lltok::kw_triple:
251 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
252 ParseStringConstant(Str))
254 M->setTargetTriple(Str);
256 case lltok::kw_datalayout:
258 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
259 ParseStringConstant(Str))
261 M->setDataLayout(Str);
267 /// ::= 'deplibs' '=' '[' ']'
268 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
269 bool LLParser::ParseDepLibs() {
270 assert(Lex.getKind() == lltok::kw_deplibs);
272 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
273 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
276 if (EatIfPresent(lltok::rsquare))
280 if (ParseStringConstant(Str)) return true;
283 while (EatIfPresent(lltok::comma)) {
284 if (ParseStringConstant(Str)) return true;
288 return ParseToken(lltok::rsquare, "expected ']' at end of list");
291 /// ParseUnnamedType:
292 /// ::= LocalVarID '=' 'type' type
293 bool LLParser::ParseUnnamedType() {
294 LocTy TypeLoc = Lex.getLoc();
295 unsigned TypeID = Lex.getUIntVal();
296 Lex.Lex(); // eat LocalVarID;
298 if (ParseToken(lltok::equal, "expected '=' after name") ||
299 ParseToken(lltok::kw_type, "expected 'type' after '='"))
302 if (TypeID >= NumberedTypes.size())
303 NumberedTypes.resize(TypeID+1);
306 if (ParseStructDefinition(TypeLoc, "",
307 NumberedTypes[TypeID], Result)) return true;
309 if (!isa<StructType>(Result)) {
310 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
312 return Error(TypeLoc, "non-struct types may not be recursive");
313 Entry.first = Result;
314 Entry.second = SMLoc();
322 /// ::= LocalVar '=' 'type' type
323 bool LLParser::ParseNamedType() {
324 std::string Name = Lex.getStrVal();
325 LocTy NameLoc = Lex.getLoc();
326 Lex.Lex(); // eat LocalVar.
328 if (ParseToken(lltok::equal, "expected '=' after name") ||
329 ParseToken(lltok::kw_type, "expected 'type' after name"))
333 if (ParseStructDefinition(NameLoc, Name,
334 NamedTypes[Name], Result)) return true;
336 if (!isa<StructType>(Result)) {
337 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
339 return Error(NameLoc, "non-struct types may not be recursive");
340 Entry.first = Result;
341 Entry.second = SMLoc();
349 /// ::= 'declare' FunctionHeader
350 bool LLParser::ParseDeclare() {
351 assert(Lex.getKind() == lltok::kw_declare);
355 return ParseFunctionHeader(F, false);
359 /// ::= 'define' FunctionHeader '{' ...
360 bool LLParser::ParseDefine() {
361 assert(Lex.getKind() == lltok::kw_define);
365 return ParseFunctionHeader(F, true) ||
366 ParseFunctionBody(*F);
372 bool LLParser::ParseGlobalType(bool &IsConstant) {
373 if (Lex.getKind() == lltok::kw_constant)
375 else if (Lex.getKind() == lltok::kw_global)
379 return TokError("expected 'global' or 'constant'");
385 /// ParseUnnamedGlobal:
386 /// OptionalVisibility ALIAS ...
387 /// OptionalLinkage OptionalVisibility ... -> global variable
388 /// GlobalID '=' OptionalVisibility ALIAS ...
389 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
390 bool LLParser::ParseUnnamedGlobal() {
391 unsigned VarID = NumberedVals.size();
393 LocTy NameLoc = Lex.getLoc();
395 // Handle the GlobalID form.
396 if (Lex.getKind() == lltok::GlobalID) {
397 if (Lex.getUIntVal() != VarID)
398 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
400 Lex.Lex(); // eat GlobalID;
402 if (ParseToken(lltok::equal, "expected '=' after name"))
407 unsigned Linkage, Visibility;
408 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
409 ParseOptionalVisibility(Visibility))
412 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
413 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
414 return ParseAlias(Name, NameLoc, Visibility);
417 /// ParseNamedGlobal:
418 /// GlobalVar '=' OptionalVisibility ALIAS ...
419 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
420 bool LLParser::ParseNamedGlobal() {
421 assert(Lex.getKind() == lltok::GlobalVar);
422 LocTy NameLoc = Lex.getLoc();
423 std::string Name = Lex.getStrVal();
427 unsigned Linkage, Visibility;
428 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
429 ParseOptionalLinkage(Linkage, HasLinkage) ||
430 ParseOptionalVisibility(Visibility))
433 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
434 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
435 return ParseAlias(Name, NameLoc, Visibility);
439 // ::= '!' STRINGCONSTANT
440 bool LLParser::ParseMDString(MDString *&Result) {
442 if (ParseStringConstant(Str)) return true;
443 Result = MDString::get(Context, Str);
448 // ::= '!' MDNodeNumber
450 /// This version of ParseMDNodeID returns the slot number and null in the case
451 /// of a forward reference.
452 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
453 // !{ ..., !42, ... }
454 if (ParseUInt32(SlotNo)) return true;
456 // Check existing MDNode.
457 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != 0)
458 Result = NumberedMetadata[SlotNo];
464 bool LLParser::ParseMDNodeID(MDNode *&Result) {
465 // !{ ..., !42, ... }
467 if (ParseMDNodeID(Result, MID)) return true;
469 // If not a forward reference, just return it now.
470 if (Result) return false;
472 // Otherwise, create MDNode forward reference.
473 MDNode *FwdNode = MDNode::getTemporary(Context, ArrayRef<Value*>());
474 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
476 if (NumberedMetadata.size() <= MID)
477 NumberedMetadata.resize(MID+1);
478 NumberedMetadata[MID] = FwdNode;
483 /// ParseNamedMetadata:
484 /// !foo = !{ !1, !2 }
485 bool LLParser::ParseNamedMetadata() {
486 assert(Lex.getKind() == lltok::MetadataVar);
487 std::string Name = Lex.getStrVal();
490 if (ParseToken(lltok::equal, "expected '=' here") ||
491 ParseToken(lltok::exclaim, "Expected '!' here") ||
492 ParseToken(lltok::lbrace, "Expected '{' here"))
495 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
496 if (Lex.getKind() != lltok::rbrace)
498 if (ParseToken(lltok::exclaim, "Expected '!' here"))
502 if (ParseMDNodeID(N)) return true;
504 } while (EatIfPresent(lltok::comma));
506 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
512 /// ParseStandaloneMetadata:
514 bool LLParser::ParseStandaloneMetadata() {
515 assert(Lex.getKind() == lltok::exclaim);
517 unsigned MetadataID = 0;
521 SmallVector<Value *, 16> Elts;
522 if (ParseUInt32(MetadataID) ||
523 ParseToken(lltok::equal, "expected '=' here") ||
524 ParseType(Ty, TyLoc) ||
525 ParseToken(lltok::exclaim, "Expected '!' here") ||
526 ParseToken(lltok::lbrace, "Expected '{' here") ||
527 ParseMDNodeVector(Elts, NULL) ||
528 ParseToken(lltok::rbrace, "expected end of metadata node"))
531 MDNode *Init = MDNode::get(Context, Elts);
533 // See if this was forward referenced, if so, handle it.
534 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
535 FI = ForwardRefMDNodes.find(MetadataID);
536 if (FI != ForwardRefMDNodes.end()) {
537 MDNode *Temp = FI->second.first;
538 Temp->replaceAllUsesWith(Init);
539 MDNode::deleteTemporary(Temp);
540 ForwardRefMDNodes.erase(FI);
542 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
544 if (MetadataID >= NumberedMetadata.size())
545 NumberedMetadata.resize(MetadataID+1);
547 if (NumberedMetadata[MetadataID] != 0)
548 return TokError("Metadata id is already used");
549 NumberedMetadata[MetadataID] = Init;
556 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
559 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
560 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
562 /// Everything through visibility has already been parsed.
564 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
565 unsigned Visibility) {
566 assert(Lex.getKind() == lltok::kw_alias);
569 LocTy LinkageLoc = Lex.getLoc();
570 if (ParseOptionalLinkage(Linkage))
573 if (Linkage != GlobalValue::ExternalLinkage &&
574 Linkage != GlobalValue::WeakAnyLinkage &&
575 Linkage != GlobalValue::WeakODRLinkage &&
576 Linkage != GlobalValue::InternalLinkage &&
577 Linkage != GlobalValue::PrivateLinkage &&
578 Linkage != GlobalValue::LinkerPrivateLinkage &&
579 Linkage != GlobalValue::LinkerPrivateWeakLinkage &&
580 Linkage != GlobalValue::LinkerPrivateWeakDefAutoLinkage)
581 return Error(LinkageLoc, "invalid linkage type for alias");
584 LocTy AliaseeLoc = Lex.getLoc();
585 if (Lex.getKind() != lltok::kw_bitcast &&
586 Lex.getKind() != lltok::kw_getelementptr) {
587 if (ParseGlobalTypeAndValue(Aliasee)) return true;
589 // The bitcast dest type is not present, it is implied by the dest type.
591 if (ParseValID(ID)) return true;
592 if (ID.Kind != ValID::t_Constant)
593 return Error(AliaseeLoc, "invalid aliasee");
594 Aliasee = ID.ConstantVal;
597 if (!Aliasee->getType()->isPointerTy())
598 return Error(AliaseeLoc, "alias must have pointer type");
600 // Okay, create the alias but do not insert it into the module yet.
601 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
602 (GlobalValue::LinkageTypes)Linkage, Name,
604 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
606 // See if this value already exists in the symbol table. If so, it is either
607 // a redefinition or a definition of a forward reference.
608 if (GlobalValue *Val = M->getNamedValue(Name)) {
609 // See if this was a redefinition. If so, there is no entry in
611 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
612 I = ForwardRefVals.find(Name);
613 if (I == ForwardRefVals.end())
614 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
616 // Otherwise, this was a definition of forward ref. Verify that types
618 if (Val->getType() != GA->getType())
619 return Error(NameLoc,
620 "forward reference and definition of alias have different types");
622 // If they agree, just RAUW the old value with the alias and remove the
624 Val->replaceAllUsesWith(GA);
625 Val->eraseFromParent();
626 ForwardRefVals.erase(I);
629 // Insert into the module, we know its name won't collide now.
630 M->getAliasList().push_back(GA);
631 assert(GA->getName() == Name && "Should not be a name conflict!");
637 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
638 /// OptionalAddrSpace OptionalUnNammedAddr GlobalType Type Const
639 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
640 /// OptionalAddrSpace OptionalUnNammedAddr GlobalType Type Const
642 /// Everything through visibility has been parsed already.
644 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
645 unsigned Linkage, bool HasLinkage,
646 unsigned Visibility) {
648 bool IsConstant, UnnamedAddr;
649 GlobalVariable::ThreadLocalMode TLM;
650 LocTy UnnamedAddrLoc;
654 if (ParseOptionalThreadLocal(TLM) ||
655 ParseOptionalAddrSpace(AddrSpace) ||
656 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
658 ParseGlobalType(IsConstant) ||
659 ParseType(Ty, TyLoc))
662 // If the linkage is specified and is external, then no initializer is
665 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
666 Linkage != GlobalValue::ExternalWeakLinkage &&
667 Linkage != GlobalValue::ExternalLinkage)) {
668 if (ParseGlobalValue(Ty, Init))
672 if (Ty->isFunctionTy() || Ty->isLabelTy())
673 return Error(TyLoc, "invalid type for global variable");
675 GlobalVariable *GV = 0;
677 // See if the global was forward referenced, if so, use the global.
679 if (GlobalValue *GVal = M->getNamedValue(Name)) {
680 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
681 return Error(NameLoc, "redefinition of global '@" + Name + "'");
682 GV = cast<GlobalVariable>(GVal);
685 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
686 I = ForwardRefValIDs.find(NumberedVals.size());
687 if (I != ForwardRefValIDs.end()) {
688 GV = cast<GlobalVariable>(I->second.first);
689 ForwardRefValIDs.erase(I);
694 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
695 Name, 0, GlobalVariable::NotThreadLocal,
698 if (GV->getType()->getElementType() != Ty)
700 "forward reference and definition of global have different types");
702 // Move the forward-reference to the correct spot in the module.
703 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
707 NumberedVals.push_back(GV);
709 // Set the parsed properties on the global.
711 GV->setInitializer(Init);
712 GV->setConstant(IsConstant);
713 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
714 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
715 GV->setThreadLocalMode(TLM);
716 GV->setUnnamedAddr(UnnamedAddr);
718 // Parse attributes on the global.
719 while (Lex.getKind() == lltok::comma) {
722 if (Lex.getKind() == lltok::kw_section) {
724 GV->setSection(Lex.getStrVal());
725 if (ParseToken(lltok::StringConstant, "expected global section string"))
727 } else if (Lex.getKind() == lltok::kw_align) {
729 if (ParseOptionalAlignment(Alignment)) return true;
730 GV->setAlignment(Alignment);
732 TokError("unknown global variable property!");
740 //===----------------------------------------------------------------------===//
741 // GlobalValue Reference/Resolution Routines.
742 //===----------------------------------------------------------------------===//
744 /// GetGlobalVal - Get a value with the specified name or ID, creating a
745 /// forward reference record if needed. This can return null if the value
746 /// exists but does not have the right type.
747 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
749 PointerType *PTy = dyn_cast<PointerType>(Ty);
751 Error(Loc, "global variable reference must have pointer type");
755 // Look this name up in the normal function symbol table.
757 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
759 // If this is a forward reference for the value, see if we already created a
760 // forward ref record.
762 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
763 I = ForwardRefVals.find(Name);
764 if (I != ForwardRefVals.end())
765 Val = I->second.first;
768 // If we have the value in the symbol table or fwd-ref table, return it.
770 if (Val->getType() == Ty) return Val;
771 Error(Loc, "'@" + Name + "' defined with type '" +
772 getTypeString(Val->getType()) + "'");
776 // Otherwise, create a new forward reference for this value and remember it.
778 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
779 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
781 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
782 GlobalValue::ExternalWeakLinkage, 0, Name);
784 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
788 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
789 PointerType *PTy = dyn_cast<PointerType>(Ty);
791 Error(Loc, "global variable reference must have pointer type");
795 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
797 // If this is a forward reference for the value, see if we already created a
798 // forward ref record.
800 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
801 I = ForwardRefValIDs.find(ID);
802 if (I != ForwardRefValIDs.end())
803 Val = I->second.first;
806 // If we have the value in the symbol table or fwd-ref table, return it.
808 if (Val->getType() == Ty) return Val;
809 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
810 getTypeString(Val->getType()) + "'");
814 // Otherwise, create a new forward reference for this value and remember it.
816 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
817 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
819 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
820 GlobalValue::ExternalWeakLinkage, 0, "");
822 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
827 //===----------------------------------------------------------------------===//
829 //===----------------------------------------------------------------------===//
831 /// ParseToken - If the current token has the specified kind, eat it and return
832 /// success. Otherwise, emit the specified error and return failure.
833 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
834 if (Lex.getKind() != T)
835 return TokError(ErrMsg);
840 /// ParseStringConstant
841 /// ::= StringConstant
842 bool LLParser::ParseStringConstant(std::string &Result) {
843 if (Lex.getKind() != lltok::StringConstant)
844 return TokError("expected string constant");
845 Result = Lex.getStrVal();
852 bool LLParser::ParseUInt32(unsigned &Val) {
853 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
854 return TokError("expected integer");
855 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
856 if (Val64 != unsigned(Val64))
857 return TokError("expected 32-bit integer (too large)");
864 /// := 'localdynamic'
867 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
868 switch (Lex.getKind()) {
870 return TokError("expected localdynamic, initialexec or localexec");
871 case lltok::kw_localdynamic:
872 TLM = GlobalVariable::LocalDynamicTLSModel;
874 case lltok::kw_initialexec:
875 TLM = GlobalVariable::InitialExecTLSModel;
877 case lltok::kw_localexec:
878 TLM = GlobalVariable::LocalExecTLSModel;
886 /// ParseOptionalThreadLocal
888 /// := 'thread_local'
889 /// := 'thread_local' '(' tlsmodel ')'
890 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
891 TLM = GlobalVariable::NotThreadLocal;
892 if (!EatIfPresent(lltok::kw_thread_local))
895 TLM = GlobalVariable::GeneralDynamicTLSModel;
896 if (Lex.getKind() == lltok::lparen) {
898 return ParseTLSModel(TLM) ||
899 ParseToken(lltok::rparen, "expected ')' after thread local model");
904 /// ParseOptionalAddrSpace
906 /// := 'addrspace' '(' uint32 ')'
907 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
909 if (!EatIfPresent(lltok::kw_addrspace))
911 return ParseToken(lltok::lparen, "expected '(' in address space") ||
912 ParseUInt32(AddrSpace) ||
913 ParseToken(lltok::rparen, "expected ')' in address space");
916 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
917 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
918 /// 2: function attr.
919 bool LLParser::ParseOptionalAttrs(Attributes &Attrs, unsigned AttrKind) {
920 Attrs = Attribute::None;
921 LocTy AttrLoc = Lex.getLoc();
924 switch (Lex.getKind()) {
925 default: // End of attributes.
926 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
927 return Error(AttrLoc, "invalid use of function-only attribute");
929 // As a hack, we allow "align 2" on functions as a synonym for
932 (Attrs & ~(Attribute::FunctionOnly | Attribute::Alignment)))
933 return Error(AttrLoc, "invalid use of attribute on a function");
935 if (AttrKind != 0 && (Attrs & Attribute::ParameterOnly))
936 return Error(AttrLoc, "invalid use of parameter-only attribute");
939 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
940 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
941 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
942 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
943 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
944 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
945 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
946 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
948 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
949 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
950 case lltok::kw_uwtable: Attrs |= Attribute::UWTable; break;
951 case lltok::kw_returns_twice: Attrs |= Attribute::ReturnsTwice; break;
952 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
953 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
954 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
955 case lltok::kw_inlinehint: Attrs |= Attribute::InlineHint; break;
956 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
957 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
958 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
959 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
960 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
961 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
962 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
963 case lltok::kw_nonlazybind: Attrs |= Attribute::NonLazyBind; break;
964 case lltok::kw_address_safety: Attrs |= Attribute::AddressSafety; break;
965 case lltok::kw_ia_nsdialect: Attrs |= Attribute::IANSDialect; break;
967 case lltok::kw_alignstack: {
969 if (ParseOptionalStackAlignment(Alignment))
971 Attrs |= Attribute::constructStackAlignmentFromInt(Alignment);
975 case lltok::kw_align: {
977 if (ParseOptionalAlignment(Alignment))
979 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
988 /// ParseOptionalLinkage
991 /// ::= 'linker_private'
992 /// ::= 'linker_private_weak'
993 /// ::= 'linker_private_weak_def_auto'
998 /// ::= 'linkonce_odr'
999 /// ::= 'available_externally'
1004 /// ::= 'extern_weak'
1006 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1008 switch (Lex.getKind()) {
1009 default: Res=GlobalValue::ExternalLinkage; return false;
1010 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1011 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1012 case lltok::kw_linker_private_weak:
1013 Res = GlobalValue::LinkerPrivateWeakLinkage;
1015 case lltok::kw_linker_private_weak_def_auto:
1016 Res = GlobalValue::LinkerPrivateWeakDefAutoLinkage;
1018 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1019 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1020 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1021 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1022 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1023 case lltok::kw_available_externally:
1024 Res = GlobalValue::AvailableExternallyLinkage;
1026 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1027 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1028 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1029 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1030 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1031 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1038 /// ParseOptionalVisibility
1044 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1045 switch (Lex.getKind()) {
1046 default: Res = GlobalValue::DefaultVisibility; return false;
1047 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1048 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1049 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1055 /// ParseOptionalCallingConv
1060 /// ::= 'x86_stdcallcc'
1061 /// ::= 'x86_fastcallcc'
1062 /// ::= 'x86_thiscallcc'
1063 /// ::= 'arm_apcscc'
1064 /// ::= 'arm_aapcscc'
1065 /// ::= 'arm_aapcs_vfpcc'
1066 /// ::= 'msp430_intrcc'
1067 /// ::= 'ptx_kernel'
1068 /// ::= 'ptx_device'
1071 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1072 switch (Lex.getKind()) {
1073 default: CC = CallingConv::C; return false;
1074 case lltok::kw_ccc: CC = CallingConv::C; break;
1075 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1076 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1077 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1078 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1079 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1080 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1081 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1082 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1083 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1084 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1085 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1086 case lltok::kw_cc: {
1087 unsigned ArbitraryCC;
1089 if (ParseUInt32(ArbitraryCC))
1091 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1100 /// ParseInstructionMetadata
1101 /// ::= !dbg !42 (',' !dbg !57)*
1102 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1103 PerFunctionState *PFS) {
1105 if (Lex.getKind() != lltok::MetadataVar)
1106 return TokError("expected metadata after comma");
1108 std::string Name = Lex.getStrVal();
1109 unsigned MDK = M->getMDKindID(Name);
1113 SMLoc Loc = Lex.getLoc();
1115 if (ParseToken(lltok::exclaim, "expected '!' here"))
1118 // This code is similar to that of ParseMetadataValue, however it needs to
1119 // have special-case code for a forward reference; see the comments on
1120 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1121 // at the top level here.
1122 if (Lex.getKind() == lltok::lbrace) {
1124 if (ParseMetadataListValue(ID, PFS))
1126 assert(ID.Kind == ValID::t_MDNode);
1127 Inst->setMetadata(MDK, ID.MDNodeVal);
1129 unsigned NodeID = 0;
1130 if (ParseMDNodeID(Node, NodeID))
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);
1142 // If this is the end of the list, we're done.
1143 } while (EatIfPresent(lltok::comma));
1147 /// ParseOptionalAlignment
1150 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1152 if (!EatIfPresent(lltok::kw_align))
1154 LocTy AlignLoc = Lex.getLoc();
1155 if (ParseUInt32(Alignment)) return true;
1156 if (!isPowerOf2_32(Alignment))
1157 return Error(AlignLoc, "alignment is not a power of two");
1158 if (Alignment > Value::MaximumAlignment)
1159 return Error(AlignLoc, "huge alignments are not supported yet");
1163 /// ParseOptionalCommaAlign
1167 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1169 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1170 bool &AteExtraComma) {
1171 AteExtraComma = false;
1172 while (EatIfPresent(lltok::comma)) {
1173 // Metadata at the end is an early exit.
1174 if (Lex.getKind() == lltok::MetadataVar) {
1175 AteExtraComma = true;
1179 if (Lex.getKind() != lltok::kw_align)
1180 return Error(Lex.getLoc(), "expected metadata or 'align'");
1182 if (ParseOptionalAlignment(Alignment)) return true;
1188 /// ParseScopeAndOrdering
1189 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1192 /// This sets Scope and Ordering to the parsed values.
1193 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1194 AtomicOrdering &Ordering) {
1198 Scope = CrossThread;
1199 if (EatIfPresent(lltok::kw_singlethread))
1200 Scope = SingleThread;
1201 switch (Lex.getKind()) {
1202 default: return TokError("Expected ordering on atomic instruction");
1203 case lltok::kw_unordered: Ordering = Unordered; break;
1204 case lltok::kw_monotonic: Ordering = Monotonic; break;
1205 case lltok::kw_acquire: Ordering = Acquire; break;
1206 case lltok::kw_release: Ordering = Release; break;
1207 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1208 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1214 /// ParseOptionalStackAlignment
1216 /// ::= 'alignstack' '(' 4 ')'
1217 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1219 if (!EatIfPresent(lltok::kw_alignstack))
1221 LocTy ParenLoc = Lex.getLoc();
1222 if (!EatIfPresent(lltok::lparen))
1223 return Error(ParenLoc, "expected '('");
1224 LocTy AlignLoc = Lex.getLoc();
1225 if (ParseUInt32(Alignment)) return true;
1226 ParenLoc = Lex.getLoc();
1227 if (!EatIfPresent(lltok::rparen))
1228 return Error(ParenLoc, "expected ')'");
1229 if (!isPowerOf2_32(Alignment))
1230 return Error(AlignLoc, "stack alignment is not a power of two");
1234 /// ParseIndexList - This parses the index list for an insert/extractvalue
1235 /// instruction. This sets AteExtraComma in the case where we eat an extra
1236 /// comma at the end of the line and find that it is followed by metadata.
1237 /// Clients that don't allow metadata can call the version of this function that
1238 /// only takes one argument.
1241 /// ::= (',' uint32)+
1243 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1244 bool &AteExtraComma) {
1245 AteExtraComma = false;
1247 if (Lex.getKind() != lltok::comma)
1248 return TokError("expected ',' as start of index list");
1250 while (EatIfPresent(lltok::comma)) {
1251 if (Lex.getKind() == lltok::MetadataVar) {
1252 AteExtraComma = true;
1256 if (ParseUInt32(Idx)) return true;
1257 Indices.push_back(Idx);
1263 //===----------------------------------------------------------------------===//
1265 //===----------------------------------------------------------------------===//
1267 /// ParseType - Parse a type.
1268 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1269 SMLoc TypeLoc = Lex.getLoc();
1270 switch (Lex.getKind()) {
1272 return TokError("expected type");
1274 // Type ::= 'float' | 'void' (etc)
1275 Result = Lex.getTyVal();
1279 // Type ::= StructType
1280 if (ParseAnonStructType(Result, false))
1283 case lltok::lsquare:
1284 // Type ::= '[' ... ']'
1285 Lex.Lex(); // eat the lsquare.
1286 if (ParseArrayVectorType(Result, false))
1289 case lltok::less: // Either vector or packed struct.
1290 // Type ::= '<' ... '>'
1292 if (Lex.getKind() == lltok::lbrace) {
1293 if (ParseAnonStructType(Result, true) ||
1294 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1296 } else if (ParseArrayVectorType(Result, true))
1299 case lltok::LocalVar: {
1301 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1303 // If the type hasn't been defined yet, create a forward definition and
1304 // remember where that forward def'n was seen (in case it never is defined).
1305 if (Entry.first == 0) {
1306 Entry.first = StructType::create(Context, Lex.getStrVal());
1307 Entry.second = Lex.getLoc();
1309 Result = Entry.first;
1314 case lltok::LocalVarID: {
1316 if (Lex.getUIntVal() >= NumberedTypes.size())
1317 NumberedTypes.resize(Lex.getUIntVal()+1);
1318 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1320 // If the type hasn't been defined yet, create a forward definition and
1321 // remember where that forward def'n was seen (in case it never is defined).
1322 if (Entry.first == 0) {
1323 Entry.first = StructType::create(Context);
1324 Entry.second = Lex.getLoc();
1326 Result = Entry.first;
1332 // Parse the type suffixes.
1334 switch (Lex.getKind()) {
1337 if (!AllowVoid && Result->isVoidTy())
1338 return Error(TypeLoc, "void type only allowed for function results");
1341 // Type ::= Type '*'
1343 if (Result->isLabelTy())
1344 return TokError("basic block pointers are invalid");
1345 if (Result->isVoidTy())
1346 return TokError("pointers to void are invalid - use i8* instead");
1347 if (!PointerType::isValidElementType(Result))
1348 return TokError("pointer to this type is invalid");
1349 Result = PointerType::getUnqual(Result);
1353 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1354 case lltok::kw_addrspace: {
1355 if (Result->isLabelTy())
1356 return TokError("basic block pointers are invalid");
1357 if (Result->isVoidTy())
1358 return TokError("pointers to void are invalid; use i8* instead");
1359 if (!PointerType::isValidElementType(Result))
1360 return TokError("pointer to this type is invalid");
1362 if (ParseOptionalAddrSpace(AddrSpace) ||
1363 ParseToken(lltok::star, "expected '*' in address space"))
1366 Result = PointerType::get(Result, AddrSpace);
1370 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1372 if (ParseFunctionType(Result))
1379 /// ParseParameterList
1381 /// ::= '(' Arg (',' Arg)* ')'
1383 /// ::= Type OptionalAttributes Value OptionalAttributes
1384 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1385 PerFunctionState &PFS) {
1386 if (ParseToken(lltok::lparen, "expected '(' in call"))
1389 while (Lex.getKind() != lltok::rparen) {
1390 // If this isn't the first argument, we need a comma.
1391 if (!ArgList.empty() &&
1392 ParseToken(lltok::comma, "expected ',' in argument list"))
1395 // Parse the argument.
1398 Attributes ArgAttrs1;
1399 Attributes ArgAttrs2;
1401 if (ParseType(ArgTy, ArgLoc))
1404 // Otherwise, handle normal operands.
1405 if (ParseOptionalAttrs(ArgAttrs1, 0) || ParseValue(ArgTy, V, PFS))
1407 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1410 Lex.Lex(); // Lex the ')'.
1416 /// ParseArgumentList - Parse the argument list for a function type or function
1418 /// ::= '(' ArgTypeListI ')'
1422 /// ::= ArgTypeList ',' '...'
1423 /// ::= ArgType (',' ArgType)*
1425 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1428 assert(Lex.getKind() == lltok::lparen);
1429 Lex.Lex(); // eat the (.
1431 if (Lex.getKind() == lltok::rparen) {
1433 } else if (Lex.getKind() == lltok::dotdotdot) {
1437 LocTy TypeLoc = Lex.getLoc();
1442 if (ParseType(ArgTy) ||
1443 ParseOptionalAttrs(Attrs, 0)) return true;
1445 if (ArgTy->isVoidTy())
1446 return Error(TypeLoc, "argument can not have void type");
1448 if (Lex.getKind() == lltok::LocalVar) {
1449 Name = Lex.getStrVal();
1453 if (!FunctionType::isValidArgumentType(ArgTy))
1454 return Error(TypeLoc, "invalid type for function argument");
1456 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1458 while (EatIfPresent(lltok::comma)) {
1459 // Handle ... at end of arg list.
1460 if (EatIfPresent(lltok::dotdotdot)) {
1465 // Otherwise must be an argument type.
1466 TypeLoc = Lex.getLoc();
1467 if (ParseType(ArgTy) || ParseOptionalAttrs(Attrs, 0)) return true;
1469 if (ArgTy->isVoidTy())
1470 return Error(TypeLoc, "argument can not have void type");
1472 if (Lex.getKind() == lltok::LocalVar) {
1473 Name = Lex.getStrVal();
1479 if (!ArgTy->isFirstClassType())
1480 return Error(TypeLoc, "invalid type for function argument");
1482 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1486 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1489 /// ParseFunctionType
1490 /// ::= Type ArgumentList OptionalAttrs
1491 bool LLParser::ParseFunctionType(Type *&Result) {
1492 assert(Lex.getKind() == lltok::lparen);
1494 if (!FunctionType::isValidReturnType(Result))
1495 return TokError("invalid function return type");
1497 SmallVector<ArgInfo, 8> ArgList;
1499 if (ParseArgumentList(ArgList, isVarArg))
1502 // Reject names on the arguments lists.
1503 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1504 if (!ArgList[i].Name.empty())
1505 return Error(ArgList[i].Loc, "argument name invalid in function type");
1506 if (ArgList[i].Attrs)
1507 return Error(ArgList[i].Loc,
1508 "argument attributes invalid in function type");
1511 SmallVector<Type*, 16> ArgListTy;
1512 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1513 ArgListTy.push_back(ArgList[i].Ty);
1515 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1519 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1521 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1522 SmallVector<Type*, 8> Elts;
1523 if (ParseStructBody(Elts)) return true;
1525 Result = StructType::get(Context, Elts, Packed);
1529 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1530 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1531 std::pair<Type*, LocTy> &Entry,
1533 // If the type was already defined, diagnose the redefinition.
1534 if (Entry.first && !Entry.second.isValid())
1535 return Error(TypeLoc, "redefinition of type");
1537 // If we have opaque, just return without filling in the definition for the
1538 // struct. This counts as a definition as far as the .ll file goes.
1539 if (EatIfPresent(lltok::kw_opaque)) {
1540 // This type is being defined, so clear the location to indicate this.
1541 Entry.second = SMLoc();
1543 // If this type number has never been uttered, create it.
1544 if (Entry.first == 0)
1545 Entry.first = StructType::create(Context, Name);
1546 ResultTy = Entry.first;
1550 // If the type starts with '<', then it is either a packed struct or a vector.
1551 bool isPacked = EatIfPresent(lltok::less);
1553 // If we don't have a struct, then we have a random type alias, which we
1554 // accept for compatibility with old files. These types are not allowed to be
1555 // forward referenced and not allowed to be recursive.
1556 if (Lex.getKind() != lltok::lbrace) {
1558 return Error(TypeLoc, "forward references to non-struct type");
1562 return ParseArrayVectorType(ResultTy, true);
1563 return ParseType(ResultTy);
1566 // This type is being defined, so clear the location to indicate this.
1567 Entry.second = SMLoc();
1569 // If this type number has never been uttered, create it.
1570 if (Entry.first == 0)
1571 Entry.first = StructType::create(Context, Name);
1573 StructType *STy = cast<StructType>(Entry.first);
1575 SmallVector<Type*, 8> Body;
1576 if (ParseStructBody(Body) ||
1577 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
1580 STy->setBody(Body, isPacked);
1586 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1589 /// ::= '{' Type (',' Type)* '}'
1590 /// ::= '<' '{' '}' '>'
1591 /// ::= '<' '{' Type (',' Type)* '}' '>'
1592 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
1593 assert(Lex.getKind() == lltok::lbrace);
1594 Lex.Lex(); // Consume the '{'
1596 // Handle the empty struct.
1597 if (EatIfPresent(lltok::rbrace))
1600 LocTy EltTyLoc = Lex.getLoc();
1602 if (ParseType(Ty)) return true;
1605 if (!StructType::isValidElementType(Ty))
1606 return Error(EltTyLoc, "invalid element type for struct");
1608 while (EatIfPresent(lltok::comma)) {
1609 EltTyLoc = Lex.getLoc();
1610 if (ParseType(Ty)) return true;
1612 if (!StructType::isValidElementType(Ty))
1613 return Error(EltTyLoc, "invalid element type for struct");
1618 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
1621 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1622 /// token has already been consumed.
1624 /// ::= '[' APSINTVAL 'x' Types ']'
1625 /// ::= '<' APSINTVAL 'x' Types '>'
1626 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
1627 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1628 Lex.getAPSIntVal().getBitWidth() > 64)
1629 return TokError("expected number in address space");
1631 LocTy SizeLoc = Lex.getLoc();
1632 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1635 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1638 LocTy TypeLoc = Lex.getLoc();
1640 if (ParseType(EltTy)) return true;
1642 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1643 "expected end of sequential type"))
1648 return Error(SizeLoc, "zero element vector is illegal");
1649 if ((unsigned)Size != Size)
1650 return Error(SizeLoc, "size too large for vector");
1651 if (!VectorType::isValidElementType(EltTy))
1652 return Error(TypeLoc,
1653 "vector element type must be fp, integer or a pointer to these types");
1654 Result = VectorType::get(EltTy, unsigned(Size));
1656 if (!ArrayType::isValidElementType(EltTy))
1657 return Error(TypeLoc, "invalid array element type");
1658 Result = ArrayType::get(EltTy, Size);
1663 //===----------------------------------------------------------------------===//
1664 // Function Semantic Analysis.
1665 //===----------------------------------------------------------------------===//
1667 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1669 : P(p), F(f), FunctionNumber(functionNumber) {
1671 // Insert unnamed arguments into the NumberedVals list.
1672 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1675 NumberedVals.push_back(AI);
1678 LLParser::PerFunctionState::~PerFunctionState() {
1679 // If there were any forward referenced non-basicblock values, delete them.
1680 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1681 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1682 if (!isa<BasicBlock>(I->second.first)) {
1683 I->second.first->replaceAllUsesWith(
1684 UndefValue::get(I->second.first->getType()));
1685 delete I->second.first;
1686 I->second.first = 0;
1689 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1690 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1691 if (!isa<BasicBlock>(I->second.first)) {
1692 I->second.first->replaceAllUsesWith(
1693 UndefValue::get(I->second.first->getType()));
1694 delete I->second.first;
1695 I->second.first = 0;
1699 bool LLParser::PerFunctionState::FinishFunction() {
1700 // Check to see if someone took the address of labels in this block.
1701 if (!P.ForwardRefBlockAddresses.empty()) {
1703 if (!F.getName().empty()) {
1704 FunctionID.Kind = ValID::t_GlobalName;
1705 FunctionID.StrVal = F.getName();
1707 FunctionID.Kind = ValID::t_GlobalID;
1708 FunctionID.UIntVal = FunctionNumber;
1711 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1712 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1713 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1714 // Resolve all these references.
1715 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1718 P.ForwardRefBlockAddresses.erase(FRBAI);
1722 if (!ForwardRefVals.empty())
1723 return P.Error(ForwardRefVals.begin()->second.second,
1724 "use of undefined value '%" + ForwardRefVals.begin()->first +
1726 if (!ForwardRefValIDs.empty())
1727 return P.Error(ForwardRefValIDs.begin()->second.second,
1728 "use of undefined value '%" +
1729 Twine(ForwardRefValIDs.begin()->first) + "'");
1734 /// GetVal - Get a value with the specified name or ID, creating a
1735 /// forward reference record if needed. This can return null if the value
1736 /// exists but does not have the right type.
1737 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1738 Type *Ty, LocTy Loc) {
1739 // Look this name up in the normal function symbol table.
1740 Value *Val = F.getValueSymbolTable().lookup(Name);
1742 // If this is a forward reference for the value, see if we already created a
1743 // forward ref record.
1745 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1746 I = ForwardRefVals.find(Name);
1747 if (I != ForwardRefVals.end())
1748 Val = I->second.first;
1751 // If we have the value in the symbol table or fwd-ref table, return it.
1753 if (Val->getType() == Ty) return Val;
1754 if (Ty->isLabelTy())
1755 P.Error(Loc, "'%" + Name + "' is not a basic block");
1757 P.Error(Loc, "'%" + Name + "' defined with type '" +
1758 getTypeString(Val->getType()) + "'");
1762 // Don't make placeholders with invalid type.
1763 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
1764 P.Error(Loc, "invalid use of a non-first-class type");
1768 // Otherwise, create a new forward reference for this value and remember it.
1770 if (Ty->isLabelTy())
1771 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1773 FwdVal = new Argument(Ty, Name);
1775 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1779 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
1781 // Look this name up in the normal function symbol table.
1782 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1784 // If this is a forward reference for the value, see if we already created a
1785 // forward ref record.
1787 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1788 I = ForwardRefValIDs.find(ID);
1789 if (I != ForwardRefValIDs.end())
1790 Val = I->second.first;
1793 // If we have the value in the symbol table or fwd-ref table, return it.
1795 if (Val->getType() == Ty) return Val;
1796 if (Ty->isLabelTy())
1797 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
1799 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
1800 getTypeString(Val->getType()) + "'");
1804 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
1805 P.Error(Loc, "invalid use of a non-first-class type");
1809 // Otherwise, create a new forward reference for this value and remember it.
1811 if (Ty->isLabelTy())
1812 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1814 FwdVal = new Argument(Ty);
1816 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1820 /// SetInstName - After an instruction is parsed and inserted into its
1821 /// basic block, this installs its name.
1822 bool LLParser::PerFunctionState::SetInstName(int NameID,
1823 const std::string &NameStr,
1824 LocTy NameLoc, Instruction *Inst) {
1825 // If this instruction has void type, it cannot have a name or ID specified.
1826 if (Inst->getType()->isVoidTy()) {
1827 if (NameID != -1 || !NameStr.empty())
1828 return P.Error(NameLoc, "instructions returning void cannot have a name");
1832 // If this was a numbered instruction, verify that the instruction is the
1833 // expected value and resolve any forward references.
1834 if (NameStr.empty()) {
1835 // If neither a name nor an ID was specified, just use the next ID.
1837 NameID = NumberedVals.size();
1839 if (unsigned(NameID) != NumberedVals.size())
1840 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1841 Twine(NumberedVals.size()) + "'");
1843 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1844 ForwardRefValIDs.find(NameID);
1845 if (FI != ForwardRefValIDs.end()) {
1846 if (FI->second.first->getType() != Inst->getType())
1847 return P.Error(NameLoc, "instruction forward referenced with type '" +
1848 getTypeString(FI->second.first->getType()) + "'");
1849 FI->second.first->replaceAllUsesWith(Inst);
1850 delete FI->second.first;
1851 ForwardRefValIDs.erase(FI);
1854 NumberedVals.push_back(Inst);
1858 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1859 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1860 FI = ForwardRefVals.find(NameStr);
1861 if (FI != ForwardRefVals.end()) {
1862 if (FI->second.first->getType() != Inst->getType())
1863 return P.Error(NameLoc, "instruction forward referenced with type '" +
1864 getTypeString(FI->second.first->getType()) + "'");
1865 FI->second.first->replaceAllUsesWith(Inst);
1866 delete FI->second.first;
1867 ForwardRefVals.erase(FI);
1870 // Set the name on the instruction.
1871 Inst->setName(NameStr);
1873 if (Inst->getName() != NameStr)
1874 return P.Error(NameLoc, "multiple definition of local value named '" +
1879 /// GetBB - Get a basic block with the specified name or ID, creating a
1880 /// forward reference record if needed.
1881 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1883 return cast_or_null<BasicBlock>(GetVal(Name,
1884 Type::getLabelTy(F.getContext()), Loc));
1887 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1888 return cast_or_null<BasicBlock>(GetVal(ID,
1889 Type::getLabelTy(F.getContext()), Loc));
1892 /// DefineBB - Define the specified basic block, which is either named or
1893 /// unnamed. If there is an error, this returns null otherwise it returns
1894 /// the block being defined.
1895 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1899 BB = GetBB(NumberedVals.size(), Loc);
1901 BB = GetBB(Name, Loc);
1902 if (BB == 0) return 0; // Already diagnosed error.
1904 // Move the block to the end of the function. Forward ref'd blocks are
1905 // inserted wherever they happen to be referenced.
1906 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1908 // Remove the block from forward ref sets.
1910 ForwardRefValIDs.erase(NumberedVals.size());
1911 NumberedVals.push_back(BB);
1913 // BB forward references are already in the function symbol table.
1914 ForwardRefVals.erase(Name);
1920 //===----------------------------------------------------------------------===//
1922 //===----------------------------------------------------------------------===//
1924 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1925 /// type implied. For example, if we parse "4" we don't know what integer type
1926 /// it has. The value will later be combined with its type and checked for
1927 /// sanity. PFS is used to convert function-local operands of metadata (since
1928 /// metadata operands are not just parsed here but also converted to values).
1929 /// PFS can be null when we are not parsing metadata values inside a function.
1930 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
1931 ID.Loc = Lex.getLoc();
1932 switch (Lex.getKind()) {
1933 default: return TokError("expected value token");
1934 case lltok::GlobalID: // @42
1935 ID.UIntVal = Lex.getUIntVal();
1936 ID.Kind = ValID::t_GlobalID;
1938 case lltok::GlobalVar: // @foo
1939 ID.StrVal = Lex.getStrVal();
1940 ID.Kind = ValID::t_GlobalName;
1942 case lltok::LocalVarID: // %42
1943 ID.UIntVal = Lex.getUIntVal();
1944 ID.Kind = ValID::t_LocalID;
1946 case lltok::LocalVar: // %foo
1947 ID.StrVal = Lex.getStrVal();
1948 ID.Kind = ValID::t_LocalName;
1950 case lltok::exclaim: // !42, !{...}, or !"foo"
1951 return ParseMetadataValue(ID, PFS);
1953 ID.APSIntVal = Lex.getAPSIntVal();
1954 ID.Kind = ValID::t_APSInt;
1956 case lltok::APFloat:
1957 ID.APFloatVal = Lex.getAPFloatVal();
1958 ID.Kind = ValID::t_APFloat;
1960 case lltok::kw_true:
1961 ID.ConstantVal = ConstantInt::getTrue(Context);
1962 ID.Kind = ValID::t_Constant;
1964 case lltok::kw_false:
1965 ID.ConstantVal = ConstantInt::getFalse(Context);
1966 ID.Kind = ValID::t_Constant;
1968 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
1969 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
1970 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
1972 case lltok::lbrace: {
1973 // ValID ::= '{' ConstVector '}'
1975 SmallVector<Constant*, 16> Elts;
1976 if (ParseGlobalValueVector(Elts) ||
1977 ParseToken(lltok::rbrace, "expected end of struct constant"))
1980 ID.ConstantStructElts = new Constant*[Elts.size()];
1981 ID.UIntVal = Elts.size();
1982 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
1983 ID.Kind = ValID::t_ConstantStruct;
1987 // ValID ::= '<' ConstVector '>' --> Vector.
1988 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
1990 bool isPackedStruct = EatIfPresent(lltok::lbrace);
1992 SmallVector<Constant*, 16> Elts;
1993 LocTy FirstEltLoc = Lex.getLoc();
1994 if (ParseGlobalValueVector(Elts) ||
1996 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
1997 ParseToken(lltok::greater, "expected end of constant"))
2000 if (isPackedStruct) {
2001 ID.ConstantStructElts = new Constant*[Elts.size()];
2002 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2003 ID.UIntVal = Elts.size();
2004 ID.Kind = ValID::t_PackedConstantStruct;
2009 return Error(ID.Loc, "constant vector must not be empty");
2011 if (!Elts[0]->getType()->isIntegerTy() &&
2012 !Elts[0]->getType()->isFloatingPointTy() &&
2013 !Elts[0]->getType()->isPointerTy())
2014 return Error(FirstEltLoc,
2015 "vector elements must have integer, pointer or floating point type");
2017 // Verify that all the vector elements have the same type.
2018 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2019 if (Elts[i]->getType() != Elts[0]->getType())
2020 return Error(FirstEltLoc,
2021 "vector element #" + Twine(i) +
2022 " is not of type '" + getTypeString(Elts[0]->getType()));
2024 ID.ConstantVal = ConstantVector::get(Elts);
2025 ID.Kind = ValID::t_Constant;
2028 case lltok::lsquare: { // Array Constant
2030 SmallVector<Constant*, 16> Elts;
2031 LocTy FirstEltLoc = Lex.getLoc();
2032 if (ParseGlobalValueVector(Elts) ||
2033 ParseToken(lltok::rsquare, "expected end of array constant"))
2036 // Handle empty element.
2038 // Use undef instead of an array because it's inconvenient to determine
2039 // the element type at this point, there being no elements to examine.
2040 ID.Kind = ValID::t_EmptyArray;
2044 if (!Elts[0]->getType()->isFirstClassType())
2045 return Error(FirstEltLoc, "invalid array element type: " +
2046 getTypeString(Elts[0]->getType()));
2048 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2050 // Verify all elements are correct type!
2051 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2052 if (Elts[i]->getType() != Elts[0]->getType())
2053 return Error(FirstEltLoc,
2054 "array element #" + Twine(i) +
2055 " is not of type '" + getTypeString(Elts[0]->getType()));
2058 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2059 ID.Kind = ValID::t_Constant;
2062 case lltok::kw_c: // c "foo"
2064 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2066 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2067 ID.Kind = ValID::t_Constant;
2070 case lltok::kw_asm: {
2071 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2072 bool HasSideEffect, AlignStack;
2074 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2075 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2076 ParseStringConstant(ID.StrVal) ||
2077 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2078 ParseToken(lltok::StringConstant, "expected constraint string"))
2080 ID.StrVal2 = Lex.getStrVal();
2081 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2082 ID.Kind = ValID::t_InlineAsm;
2086 case lltok::kw_blockaddress: {
2087 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2091 LocTy FnLoc, LabelLoc;
2093 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2095 ParseToken(lltok::comma, "expected comma in block address expression")||
2096 ParseValID(Label) ||
2097 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2100 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2101 return Error(Fn.Loc, "expected function name in blockaddress");
2102 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2103 return Error(Label.Loc, "expected basic block name in blockaddress");
2105 // Make a global variable as a placeholder for this reference.
2106 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2107 false, GlobalValue::InternalLinkage,
2109 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2110 ID.ConstantVal = FwdRef;
2111 ID.Kind = ValID::t_Constant;
2115 case lltok::kw_trunc:
2116 case lltok::kw_zext:
2117 case lltok::kw_sext:
2118 case lltok::kw_fptrunc:
2119 case lltok::kw_fpext:
2120 case lltok::kw_bitcast:
2121 case lltok::kw_uitofp:
2122 case lltok::kw_sitofp:
2123 case lltok::kw_fptoui:
2124 case lltok::kw_fptosi:
2125 case lltok::kw_inttoptr:
2126 case lltok::kw_ptrtoint: {
2127 unsigned Opc = Lex.getUIntVal();
2131 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2132 ParseGlobalTypeAndValue(SrcVal) ||
2133 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2134 ParseType(DestTy) ||
2135 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2137 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2138 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2139 getTypeString(SrcVal->getType()) + "' to '" +
2140 getTypeString(DestTy) + "'");
2141 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2143 ID.Kind = ValID::t_Constant;
2146 case lltok::kw_extractvalue: {
2149 SmallVector<unsigned, 4> Indices;
2150 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2151 ParseGlobalTypeAndValue(Val) ||
2152 ParseIndexList(Indices) ||
2153 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2156 if (!Val->getType()->isAggregateType())
2157 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2158 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2159 return Error(ID.Loc, "invalid indices for extractvalue");
2160 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2161 ID.Kind = ValID::t_Constant;
2164 case lltok::kw_insertvalue: {
2166 Constant *Val0, *Val1;
2167 SmallVector<unsigned, 4> Indices;
2168 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2169 ParseGlobalTypeAndValue(Val0) ||
2170 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2171 ParseGlobalTypeAndValue(Val1) ||
2172 ParseIndexList(Indices) ||
2173 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2175 if (!Val0->getType()->isAggregateType())
2176 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2177 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2178 return Error(ID.Loc, "invalid indices for insertvalue");
2179 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2180 ID.Kind = ValID::t_Constant;
2183 case lltok::kw_icmp:
2184 case lltok::kw_fcmp: {
2185 unsigned PredVal, Opc = Lex.getUIntVal();
2186 Constant *Val0, *Val1;
2188 if (ParseCmpPredicate(PredVal, Opc) ||
2189 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2190 ParseGlobalTypeAndValue(Val0) ||
2191 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2192 ParseGlobalTypeAndValue(Val1) ||
2193 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2196 if (Val0->getType() != Val1->getType())
2197 return Error(ID.Loc, "compare operands must have the same type");
2199 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2201 if (Opc == Instruction::FCmp) {
2202 if (!Val0->getType()->isFPOrFPVectorTy())
2203 return Error(ID.Loc, "fcmp requires floating point operands");
2204 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2206 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2207 if (!Val0->getType()->isIntOrIntVectorTy() &&
2208 !Val0->getType()->getScalarType()->isPointerTy())
2209 return Error(ID.Loc, "icmp requires pointer or integer operands");
2210 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2212 ID.Kind = ValID::t_Constant;
2216 // Binary Operators.
2218 case lltok::kw_fadd:
2220 case lltok::kw_fsub:
2222 case lltok::kw_fmul:
2223 case lltok::kw_udiv:
2224 case lltok::kw_sdiv:
2225 case lltok::kw_fdiv:
2226 case lltok::kw_urem:
2227 case lltok::kw_srem:
2228 case lltok::kw_frem:
2230 case lltok::kw_lshr:
2231 case lltok::kw_ashr: {
2235 unsigned Opc = Lex.getUIntVal();
2236 Constant *Val0, *Val1;
2238 LocTy ModifierLoc = Lex.getLoc();
2239 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2240 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2241 if (EatIfPresent(lltok::kw_nuw))
2243 if (EatIfPresent(lltok::kw_nsw)) {
2245 if (EatIfPresent(lltok::kw_nuw))
2248 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2249 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2250 if (EatIfPresent(lltok::kw_exact))
2253 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2254 ParseGlobalTypeAndValue(Val0) ||
2255 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2256 ParseGlobalTypeAndValue(Val1) ||
2257 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2259 if (Val0->getType() != Val1->getType())
2260 return Error(ID.Loc, "operands of constexpr must have same type");
2261 if (!Val0->getType()->isIntOrIntVectorTy()) {
2263 return Error(ModifierLoc, "nuw only applies to integer operations");
2265 return Error(ModifierLoc, "nsw only applies to integer operations");
2267 // Check that the type is valid for the operator.
2269 case Instruction::Add:
2270 case Instruction::Sub:
2271 case Instruction::Mul:
2272 case Instruction::UDiv:
2273 case Instruction::SDiv:
2274 case Instruction::URem:
2275 case Instruction::SRem:
2276 case Instruction::Shl:
2277 case Instruction::AShr:
2278 case Instruction::LShr:
2279 if (!Val0->getType()->isIntOrIntVectorTy())
2280 return Error(ID.Loc, "constexpr requires integer operands");
2282 case Instruction::FAdd:
2283 case Instruction::FSub:
2284 case Instruction::FMul:
2285 case Instruction::FDiv:
2286 case Instruction::FRem:
2287 if (!Val0->getType()->isFPOrFPVectorTy())
2288 return Error(ID.Loc, "constexpr requires fp operands");
2290 default: llvm_unreachable("Unknown binary operator!");
2293 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2294 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2295 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2296 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2298 ID.Kind = ValID::t_Constant;
2302 // Logical Operations
2305 case lltok::kw_xor: {
2306 unsigned Opc = Lex.getUIntVal();
2307 Constant *Val0, *Val1;
2309 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2310 ParseGlobalTypeAndValue(Val0) ||
2311 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2312 ParseGlobalTypeAndValue(Val1) ||
2313 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2315 if (Val0->getType() != Val1->getType())
2316 return Error(ID.Loc, "operands of constexpr must have same type");
2317 if (!Val0->getType()->isIntOrIntVectorTy())
2318 return Error(ID.Loc,
2319 "constexpr requires integer or integer vector operands");
2320 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2321 ID.Kind = ValID::t_Constant;
2325 case lltok::kw_getelementptr:
2326 case lltok::kw_shufflevector:
2327 case lltok::kw_insertelement:
2328 case lltok::kw_extractelement:
2329 case lltok::kw_select: {
2330 unsigned Opc = Lex.getUIntVal();
2331 SmallVector<Constant*, 16> Elts;
2332 bool InBounds = false;
2334 if (Opc == Instruction::GetElementPtr)
2335 InBounds = EatIfPresent(lltok::kw_inbounds);
2336 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2337 ParseGlobalValueVector(Elts) ||
2338 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2341 if (Opc == Instruction::GetElementPtr) {
2342 if (Elts.size() == 0 ||
2343 !Elts[0]->getType()->getScalarType()->isPointerTy())
2344 return Error(ID.Loc, "getelementptr requires pointer operand");
2346 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2347 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2348 return Error(ID.Loc, "invalid indices for getelementptr");
2349 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2351 } else if (Opc == Instruction::Select) {
2352 if (Elts.size() != 3)
2353 return Error(ID.Loc, "expected three operands to select");
2354 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2356 return Error(ID.Loc, Reason);
2357 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2358 } else if (Opc == Instruction::ShuffleVector) {
2359 if (Elts.size() != 3)
2360 return Error(ID.Loc, "expected three operands to shufflevector");
2361 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2362 return Error(ID.Loc, "invalid operands to shufflevector");
2364 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2365 } else if (Opc == Instruction::ExtractElement) {
2366 if (Elts.size() != 2)
2367 return Error(ID.Loc, "expected two operands to extractelement");
2368 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2369 return Error(ID.Loc, "invalid extractelement operands");
2370 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2372 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2373 if (Elts.size() != 3)
2374 return Error(ID.Loc, "expected three operands to insertelement");
2375 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2376 return Error(ID.Loc, "invalid insertelement operands");
2378 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2381 ID.Kind = ValID::t_Constant;
2390 /// ParseGlobalValue - Parse a global value with the specified type.
2391 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2395 bool Parsed = ParseValID(ID) ||
2396 ConvertValIDToValue(Ty, ID, V, NULL);
2397 if (V && !(C = dyn_cast<Constant>(V)))
2398 return Error(ID.Loc, "global values must be constants");
2402 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2404 return ParseType(Ty) ||
2405 ParseGlobalValue(Ty, V);
2408 /// ParseGlobalValueVector
2410 /// ::= TypeAndValue (',' TypeAndValue)*
2411 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2413 if (Lex.getKind() == lltok::rbrace ||
2414 Lex.getKind() == lltok::rsquare ||
2415 Lex.getKind() == lltok::greater ||
2416 Lex.getKind() == lltok::rparen)
2420 if (ParseGlobalTypeAndValue(C)) return true;
2423 while (EatIfPresent(lltok::comma)) {
2424 if (ParseGlobalTypeAndValue(C)) return true;
2431 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2432 assert(Lex.getKind() == lltok::lbrace);
2435 SmallVector<Value*, 16> Elts;
2436 if (ParseMDNodeVector(Elts, PFS) ||
2437 ParseToken(lltok::rbrace, "expected end of metadata node"))
2440 ID.MDNodeVal = MDNode::get(Context, Elts);
2441 ID.Kind = ValID::t_MDNode;
2445 /// ParseMetadataValue
2449 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2450 assert(Lex.getKind() == lltok::exclaim);
2455 if (Lex.getKind() == lltok::lbrace)
2456 return ParseMetadataListValue(ID, PFS);
2458 // Standalone metadata reference
2460 if (Lex.getKind() == lltok::APSInt) {
2461 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2462 ID.Kind = ValID::t_MDNode;
2467 // ::= '!' STRINGCONSTANT
2468 if (ParseMDString(ID.MDStringVal)) return true;
2469 ID.Kind = ValID::t_MDString;
2474 //===----------------------------------------------------------------------===//
2475 // Function Parsing.
2476 //===----------------------------------------------------------------------===//
2478 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2479 PerFunctionState *PFS) {
2480 if (Ty->isFunctionTy())
2481 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2484 case ValID::t_LocalID:
2485 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2486 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2488 case ValID::t_LocalName:
2489 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2490 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2492 case ValID::t_InlineAsm: {
2493 PointerType *PTy = dyn_cast<PointerType>(Ty);
2495 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2496 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2497 return Error(ID.Loc, "invalid type for inline asm constraint string");
2498 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2501 case ValID::t_MDNode:
2502 if (!Ty->isMetadataTy())
2503 return Error(ID.Loc, "metadata value must have metadata type");
2506 case ValID::t_MDString:
2507 if (!Ty->isMetadataTy())
2508 return Error(ID.Loc, "metadata value must have metadata type");
2511 case ValID::t_GlobalName:
2512 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2514 case ValID::t_GlobalID:
2515 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2517 case ValID::t_APSInt:
2518 if (!Ty->isIntegerTy())
2519 return Error(ID.Loc, "integer constant must have integer type");
2520 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2521 V = ConstantInt::get(Context, ID.APSIntVal);
2523 case ValID::t_APFloat:
2524 if (!Ty->isFloatingPointTy() ||
2525 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2526 return Error(ID.Loc, "floating point constant invalid for type");
2528 // The lexer has no type info, so builds all half, float, and double FP
2529 // constants as double. Fix this here. Long double does not need this.
2530 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
2533 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
2535 else if (Ty->isFloatTy())
2536 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2539 V = ConstantFP::get(Context, ID.APFloatVal);
2541 if (V->getType() != Ty)
2542 return Error(ID.Loc, "floating point constant does not have type '" +
2543 getTypeString(Ty) + "'");
2547 if (!Ty->isPointerTy())
2548 return Error(ID.Loc, "null must be a pointer type");
2549 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2551 case ValID::t_Undef:
2552 // FIXME: LabelTy should not be a first-class type.
2553 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2554 return Error(ID.Loc, "invalid type for undef constant");
2555 V = UndefValue::get(Ty);
2557 case ValID::t_EmptyArray:
2558 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2559 return Error(ID.Loc, "invalid empty array initializer");
2560 V = UndefValue::get(Ty);
2563 // FIXME: LabelTy should not be a first-class type.
2564 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2565 return Error(ID.Loc, "invalid type for null constant");
2566 V = Constant::getNullValue(Ty);
2568 case ValID::t_Constant:
2569 if (ID.ConstantVal->getType() != Ty)
2570 return Error(ID.Loc, "constant expression type mismatch");
2574 case ValID::t_ConstantStruct:
2575 case ValID::t_PackedConstantStruct:
2576 if (StructType *ST = dyn_cast<StructType>(Ty)) {
2577 if (ST->getNumElements() != ID.UIntVal)
2578 return Error(ID.Loc,
2579 "initializer with struct type has wrong # elements");
2580 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
2581 return Error(ID.Loc, "packed'ness of initializer and type don't match");
2583 // Verify that the elements are compatible with the structtype.
2584 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
2585 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
2586 return Error(ID.Loc, "element " + Twine(i) +
2587 " of struct initializer doesn't match struct element type");
2589 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
2592 return Error(ID.Loc, "constant expression type mismatch");
2595 llvm_unreachable("Invalid ValID");
2598 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
2601 return ParseValID(ID, PFS) ||
2602 ConvertValIDToValue(Ty, ID, V, PFS);
2605 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
2607 return ParseType(Ty) ||
2608 ParseValue(Ty, V, PFS);
2611 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2612 PerFunctionState &PFS) {
2615 if (ParseTypeAndValue(V, PFS)) return true;
2616 if (!isa<BasicBlock>(V))
2617 return Error(Loc, "expected a basic block");
2618 BB = cast<BasicBlock>(V);
2624 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2625 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2626 /// OptionalAlign OptGC
2627 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2628 // Parse the linkage.
2629 LocTy LinkageLoc = Lex.getLoc();
2632 unsigned Visibility;
2633 Attributes RetAttrs;
2636 LocTy RetTypeLoc = Lex.getLoc();
2637 if (ParseOptionalLinkage(Linkage) ||
2638 ParseOptionalVisibility(Visibility) ||
2639 ParseOptionalCallingConv(CC) ||
2640 ParseOptionalAttrs(RetAttrs, 1) ||
2641 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2644 // Verify that the linkage is ok.
2645 switch ((GlobalValue::LinkageTypes)Linkage) {
2646 case GlobalValue::ExternalLinkage:
2647 break; // always ok.
2648 case GlobalValue::DLLImportLinkage:
2649 case GlobalValue::ExternalWeakLinkage:
2651 return Error(LinkageLoc, "invalid linkage for function definition");
2653 case GlobalValue::PrivateLinkage:
2654 case GlobalValue::LinkerPrivateLinkage:
2655 case GlobalValue::LinkerPrivateWeakLinkage:
2656 case GlobalValue::LinkerPrivateWeakDefAutoLinkage:
2657 case GlobalValue::InternalLinkage:
2658 case GlobalValue::AvailableExternallyLinkage:
2659 case GlobalValue::LinkOnceAnyLinkage:
2660 case GlobalValue::LinkOnceODRLinkage:
2661 case GlobalValue::WeakAnyLinkage:
2662 case GlobalValue::WeakODRLinkage:
2663 case GlobalValue::DLLExportLinkage:
2665 return Error(LinkageLoc, "invalid linkage for function declaration");
2667 case GlobalValue::AppendingLinkage:
2668 case GlobalValue::CommonLinkage:
2669 return Error(LinkageLoc, "invalid function linkage type");
2672 if (!FunctionType::isValidReturnType(RetType))
2673 return Error(RetTypeLoc, "invalid function return type");
2675 LocTy NameLoc = Lex.getLoc();
2677 std::string FunctionName;
2678 if (Lex.getKind() == lltok::GlobalVar) {
2679 FunctionName = Lex.getStrVal();
2680 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2681 unsigned NameID = Lex.getUIntVal();
2683 if (NameID != NumberedVals.size())
2684 return TokError("function expected to be numbered '%" +
2685 Twine(NumberedVals.size()) + "'");
2687 return TokError("expected function name");
2692 if (Lex.getKind() != lltok::lparen)
2693 return TokError("expected '(' in function argument list");
2695 SmallVector<ArgInfo, 8> ArgList;
2697 Attributes FuncAttrs;
2698 std::string Section;
2702 LocTy UnnamedAddrLoc;
2704 if (ParseArgumentList(ArgList, isVarArg) ||
2705 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
2707 ParseOptionalAttrs(FuncAttrs, 2) ||
2708 (EatIfPresent(lltok::kw_section) &&
2709 ParseStringConstant(Section)) ||
2710 ParseOptionalAlignment(Alignment) ||
2711 (EatIfPresent(lltok::kw_gc) &&
2712 ParseStringConstant(GC)))
2715 // If the alignment was parsed as an attribute, move to the alignment field.
2716 if (FuncAttrs & Attribute::Alignment) {
2717 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2718 FuncAttrs &= ~Attribute::Alignment;
2721 // Okay, if we got here, the function is syntactically valid. Convert types
2722 // and do semantic checks.
2723 std::vector<Type*> ParamTypeList;
2724 SmallVector<AttributeWithIndex, 8> Attrs;
2726 if (RetAttrs != Attribute::None)
2727 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2729 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2730 ParamTypeList.push_back(ArgList[i].Ty);
2731 if (ArgList[i].Attrs != Attribute::None)
2732 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2735 if (FuncAttrs != Attribute::None)
2736 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2738 AttrListPtr PAL = AttrListPtr::get(Attrs);
2740 if (PAL.paramHasAttr(1, Attribute::StructRet) && !RetType->isVoidTy())
2741 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2744 FunctionType::get(RetType, ParamTypeList, isVarArg);
2745 PointerType *PFT = PointerType::getUnqual(FT);
2748 if (!FunctionName.empty()) {
2749 // If this was a definition of a forward reference, remove the definition
2750 // from the forward reference table and fill in the forward ref.
2751 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2752 ForwardRefVals.find(FunctionName);
2753 if (FRVI != ForwardRefVals.end()) {
2754 Fn = M->getFunction(FunctionName);
2755 if (Fn->getType() != PFT)
2756 return Error(FRVI->second.second, "invalid forward reference to "
2757 "function '" + FunctionName + "' with wrong type!");
2759 ForwardRefVals.erase(FRVI);
2760 } else if ((Fn = M->getFunction(FunctionName))) {
2761 // Reject redefinitions.
2762 return Error(NameLoc, "invalid redefinition of function '" +
2763 FunctionName + "'");
2764 } else if (M->getNamedValue(FunctionName)) {
2765 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2769 // If this is a definition of a forward referenced function, make sure the
2771 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2772 = ForwardRefValIDs.find(NumberedVals.size());
2773 if (I != ForwardRefValIDs.end()) {
2774 Fn = cast<Function>(I->second.first);
2775 if (Fn->getType() != PFT)
2776 return Error(NameLoc, "type of definition and forward reference of '@" +
2777 Twine(NumberedVals.size()) + "' disagree");
2778 ForwardRefValIDs.erase(I);
2783 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2784 else // Move the forward-reference to the correct spot in the module.
2785 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2787 if (FunctionName.empty())
2788 NumberedVals.push_back(Fn);
2790 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2791 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2792 Fn->setCallingConv(CC);
2793 Fn->setAttributes(PAL);
2794 Fn->setUnnamedAddr(UnnamedAddr);
2795 Fn->setAlignment(Alignment);
2796 Fn->setSection(Section);
2797 if (!GC.empty()) Fn->setGC(GC.c_str());
2799 // Add all of the arguments we parsed to the function.
2800 Function::arg_iterator ArgIt = Fn->arg_begin();
2801 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2802 // If the argument has a name, insert it into the argument symbol table.
2803 if (ArgList[i].Name.empty()) continue;
2805 // Set the name, if it conflicted, it will be auto-renamed.
2806 ArgIt->setName(ArgList[i].Name);
2808 if (ArgIt->getName() != ArgList[i].Name)
2809 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2810 ArgList[i].Name + "'");
2817 /// ParseFunctionBody
2818 /// ::= '{' BasicBlock+ '}'
2820 bool LLParser::ParseFunctionBody(Function &Fn) {
2821 if (Lex.getKind() != lltok::lbrace)
2822 return TokError("expected '{' in function body");
2823 Lex.Lex(); // eat the {.
2825 int FunctionNumber = -1;
2826 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2828 PerFunctionState PFS(*this, Fn, FunctionNumber);
2830 // We need at least one basic block.
2831 if (Lex.getKind() == lltok::rbrace)
2832 return TokError("function body requires at least one basic block");
2834 while (Lex.getKind() != lltok::rbrace)
2835 if (ParseBasicBlock(PFS)) return true;
2840 // Verify function is ok.
2841 return PFS.FinishFunction();
2845 /// ::= LabelStr? Instruction*
2846 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2847 // If this basic block starts out with a name, remember it.
2849 LocTy NameLoc = Lex.getLoc();
2850 if (Lex.getKind() == lltok::LabelStr) {
2851 Name = Lex.getStrVal();
2855 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2856 if (BB == 0) return true;
2858 std::string NameStr;
2860 // Parse the instructions in this block until we get a terminator.
2862 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2864 // This instruction may have three possibilities for a name: a) none
2865 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2866 LocTy NameLoc = Lex.getLoc();
2870 if (Lex.getKind() == lltok::LocalVarID) {
2871 NameID = Lex.getUIntVal();
2873 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2875 } else if (Lex.getKind() == lltok::LocalVar) {
2876 NameStr = Lex.getStrVal();
2878 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2882 switch (ParseInstruction(Inst, BB, PFS)) {
2883 default: llvm_unreachable("Unknown ParseInstruction result!");
2884 case InstError: return true;
2886 BB->getInstList().push_back(Inst);
2888 // With a normal result, we check to see if the instruction is followed by
2889 // a comma and metadata.
2890 if (EatIfPresent(lltok::comma))
2891 if (ParseInstructionMetadata(Inst, &PFS))
2894 case InstExtraComma:
2895 BB->getInstList().push_back(Inst);
2897 // If the instruction parser ate an extra comma at the end of it, it
2898 // *must* be followed by metadata.
2899 if (ParseInstructionMetadata(Inst, &PFS))
2904 // Set the name on the instruction.
2905 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2906 } while (!isa<TerminatorInst>(Inst));
2911 //===----------------------------------------------------------------------===//
2912 // Instruction Parsing.
2913 //===----------------------------------------------------------------------===//
2915 /// ParseInstruction - Parse one of the many different instructions.
2917 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2918 PerFunctionState &PFS) {
2919 lltok::Kind Token = Lex.getKind();
2920 if (Token == lltok::Eof)
2921 return TokError("found end of file when expecting more instructions");
2922 LocTy Loc = Lex.getLoc();
2923 unsigned KeywordVal = Lex.getUIntVal();
2924 Lex.Lex(); // Eat the keyword.
2927 default: return Error(Loc, "expected instruction opcode");
2928 // Terminator Instructions.
2929 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
2930 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
2931 case lltok::kw_br: return ParseBr(Inst, PFS);
2932 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
2933 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
2934 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
2935 case lltok::kw_resume: return ParseResume(Inst, PFS);
2936 // Binary Operators.
2940 case lltok::kw_shl: {
2941 bool NUW = EatIfPresent(lltok::kw_nuw);
2942 bool NSW = EatIfPresent(lltok::kw_nsw);
2943 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
2945 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
2947 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
2948 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
2951 case lltok::kw_fadd:
2952 case lltok::kw_fsub:
2953 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2955 case lltok::kw_sdiv:
2956 case lltok::kw_udiv:
2957 case lltok::kw_lshr:
2958 case lltok::kw_ashr: {
2959 bool Exact = EatIfPresent(lltok::kw_exact);
2961 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
2962 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
2966 case lltok::kw_urem:
2967 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
2968 case lltok::kw_fdiv:
2969 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2972 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
2973 case lltok::kw_icmp:
2974 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
2976 case lltok::kw_trunc:
2977 case lltok::kw_zext:
2978 case lltok::kw_sext:
2979 case lltok::kw_fptrunc:
2980 case lltok::kw_fpext:
2981 case lltok::kw_bitcast:
2982 case lltok::kw_uitofp:
2983 case lltok::kw_sitofp:
2984 case lltok::kw_fptoui:
2985 case lltok::kw_fptosi:
2986 case lltok::kw_inttoptr:
2987 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
2989 case lltok::kw_select: return ParseSelect(Inst, PFS);
2990 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
2991 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
2992 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
2993 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
2994 case lltok::kw_phi: return ParsePHI(Inst, PFS);
2995 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
2996 case lltok::kw_call: return ParseCall(Inst, PFS, false);
2997 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
2999 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3000 case lltok::kw_load: return ParseLoad(Inst, PFS);
3001 case lltok::kw_store: return ParseStore(Inst, PFS);
3002 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3003 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3004 case lltok::kw_fence: return ParseFence(Inst, PFS);
3005 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3006 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3007 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3011 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3012 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3013 if (Opc == Instruction::FCmp) {
3014 switch (Lex.getKind()) {
3015 default: TokError("expected fcmp predicate (e.g. 'oeq')");
3016 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3017 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3018 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3019 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3020 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3021 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3022 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3023 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3024 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3025 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3026 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3027 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3028 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3029 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3030 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3031 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3034 switch (Lex.getKind()) {
3035 default: TokError("expected icmp predicate (e.g. 'eq')");
3036 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3037 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3038 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3039 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3040 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3041 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3042 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3043 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3044 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3045 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3052 //===----------------------------------------------------------------------===//
3053 // Terminator Instructions.
3054 //===----------------------------------------------------------------------===//
3056 /// ParseRet - Parse a return instruction.
3057 /// ::= 'ret' void (',' !dbg, !1)*
3058 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3059 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3060 PerFunctionState &PFS) {
3061 SMLoc TypeLoc = Lex.getLoc();
3063 if (ParseType(Ty, true /*void allowed*/)) return true;
3065 Type *ResType = PFS.getFunction().getReturnType();
3067 if (Ty->isVoidTy()) {
3068 if (!ResType->isVoidTy())
3069 return Error(TypeLoc, "value doesn't match function result type '" +
3070 getTypeString(ResType) + "'");
3072 Inst = ReturnInst::Create(Context);
3077 if (ParseValue(Ty, RV, PFS)) return true;
3079 if (ResType != RV->getType())
3080 return Error(TypeLoc, "value doesn't match function result type '" +
3081 getTypeString(ResType) + "'");
3083 Inst = ReturnInst::Create(Context, RV);
3089 /// ::= 'br' TypeAndValue
3090 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3091 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3094 BasicBlock *Op1, *Op2;
3095 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3097 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3098 Inst = BranchInst::Create(BB);
3102 if (Op0->getType() != Type::getInt1Ty(Context))
3103 return Error(Loc, "branch condition must have 'i1' type");
3105 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3106 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3107 ParseToken(lltok::comma, "expected ',' after true destination") ||
3108 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3111 Inst = BranchInst::Create(Op1, Op2, Op0);
3117 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3119 /// ::= (TypeAndValue ',' TypeAndValue)*
3120 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3121 LocTy CondLoc, BBLoc;
3123 BasicBlock *DefaultBB;
3124 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3125 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3126 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3127 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3130 if (!Cond->getType()->isIntegerTy())
3131 return Error(CondLoc, "switch condition must have integer type");
3133 // Parse the jump table pairs.
3134 SmallPtrSet<Value*, 32> SeenCases;
3135 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3136 while (Lex.getKind() != lltok::rsquare) {
3140 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3141 ParseToken(lltok::comma, "expected ',' after case value") ||
3142 ParseTypeAndBasicBlock(DestBB, PFS))
3145 if (!SeenCases.insert(Constant))
3146 return Error(CondLoc, "duplicate case value in switch");
3147 if (!isa<ConstantInt>(Constant))
3148 return Error(CondLoc, "case value is not a constant integer");
3150 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3153 Lex.Lex(); // Eat the ']'.
3155 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3156 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3157 SI->addCase(Table[i].first, Table[i].second);
3164 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3165 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3168 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3169 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3170 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3173 if (!Address->getType()->isPointerTy())
3174 return Error(AddrLoc, "indirectbr address must have pointer type");
3176 // Parse the destination list.
3177 SmallVector<BasicBlock*, 16> DestList;
3179 if (Lex.getKind() != lltok::rsquare) {
3181 if (ParseTypeAndBasicBlock(DestBB, PFS))
3183 DestList.push_back(DestBB);
3185 while (EatIfPresent(lltok::comma)) {
3186 if (ParseTypeAndBasicBlock(DestBB, PFS))
3188 DestList.push_back(DestBB);
3192 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3195 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3196 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3197 IBI->addDestination(DestList[i]);
3204 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3205 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3206 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3207 LocTy CallLoc = Lex.getLoc();
3208 Attributes RetAttrs, FnAttrs;
3213 SmallVector<ParamInfo, 16> ArgList;
3215 BasicBlock *NormalBB, *UnwindBB;
3216 if (ParseOptionalCallingConv(CC) ||
3217 ParseOptionalAttrs(RetAttrs, 1) ||
3218 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3219 ParseValID(CalleeID) ||
3220 ParseParameterList(ArgList, PFS) ||
3221 ParseOptionalAttrs(FnAttrs, 2) ||
3222 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3223 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3224 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3225 ParseTypeAndBasicBlock(UnwindBB, PFS))
3228 // If RetType is a non-function pointer type, then this is the short syntax
3229 // for the call, which means that RetType is just the return type. Infer the
3230 // rest of the function argument types from the arguments that are present.
3231 PointerType *PFTy = 0;
3232 FunctionType *Ty = 0;
3233 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3234 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3235 // Pull out the types of all of the arguments...
3236 std::vector<Type*> ParamTypes;
3237 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3238 ParamTypes.push_back(ArgList[i].V->getType());
3240 if (!FunctionType::isValidReturnType(RetType))
3241 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3243 Ty = FunctionType::get(RetType, ParamTypes, false);
3244 PFTy = PointerType::getUnqual(Ty);
3247 // Look up the callee.
3249 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3251 // Set up the Attributes for the function.
3252 SmallVector<AttributeWithIndex, 8> Attrs;
3253 if (RetAttrs != Attribute::None)
3254 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3256 SmallVector<Value*, 8> Args;
3258 // Loop through FunctionType's arguments and ensure they are specified
3259 // correctly. Also, gather any parameter attributes.
3260 FunctionType::param_iterator I = Ty->param_begin();
3261 FunctionType::param_iterator E = Ty->param_end();
3262 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3263 Type *ExpectedTy = 0;
3266 } else if (!Ty->isVarArg()) {
3267 return Error(ArgList[i].Loc, "too many arguments specified");
3270 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3271 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3272 getTypeString(ExpectedTy) + "'");
3273 Args.push_back(ArgList[i].V);
3274 if (ArgList[i].Attrs != Attribute::None)
3275 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3279 return Error(CallLoc, "not enough parameters specified for call");
3281 if (FnAttrs != Attribute::None)
3282 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3284 // Finish off the Attributes and check them
3285 AttrListPtr PAL = AttrListPtr::get(Attrs);
3287 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3288 II->setCallingConv(CC);
3289 II->setAttributes(PAL);
3295 /// ::= 'resume' TypeAndValue
3296 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3297 Value *Exn; LocTy ExnLoc;
3298 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3301 ResumeInst *RI = ResumeInst::Create(Exn);
3306 //===----------------------------------------------------------------------===//
3307 // Binary Operators.
3308 //===----------------------------------------------------------------------===//
3311 /// ::= ArithmeticOps TypeAndValue ',' Value
3313 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3314 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3315 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3316 unsigned Opc, unsigned OperandType) {
3317 LocTy Loc; Value *LHS, *RHS;
3318 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3319 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3320 ParseValue(LHS->getType(), RHS, PFS))
3324 switch (OperandType) {
3325 default: llvm_unreachable("Unknown operand type!");
3326 case 0: // int or FP.
3327 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3328 LHS->getType()->isFPOrFPVectorTy();
3330 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3331 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3335 return Error(Loc, "invalid operand type for instruction");
3337 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3342 /// ::= ArithmeticOps TypeAndValue ',' Value {
3343 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3345 LocTy Loc; Value *LHS, *RHS;
3346 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3347 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3348 ParseValue(LHS->getType(), RHS, PFS))
3351 if (!LHS->getType()->isIntOrIntVectorTy())
3352 return Error(Loc,"instruction requires integer or integer vector operands");
3354 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3360 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3361 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3362 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3364 // Parse the integer/fp comparison predicate.
3368 if (ParseCmpPredicate(Pred, Opc) ||
3369 ParseTypeAndValue(LHS, Loc, PFS) ||
3370 ParseToken(lltok::comma, "expected ',' after compare value") ||
3371 ParseValue(LHS->getType(), RHS, PFS))
3374 if (Opc == Instruction::FCmp) {
3375 if (!LHS->getType()->isFPOrFPVectorTy())
3376 return Error(Loc, "fcmp requires floating point operands");
3377 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3379 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3380 if (!LHS->getType()->isIntOrIntVectorTy() &&
3381 !LHS->getType()->getScalarType()->isPointerTy())
3382 return Error(Loc, "icmp requires integer operands");
3383 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3388 //===----------------------------------------------------------------------===//
3389 // Other Instructions.
3390 //===----------------------------------------------------------------------===//
3394 /// ::= CastOpc TypeAndValue 'to' Type
3395 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3400 if (ParseTypeAndValue(Op, Loc, PFS) ||
3401 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3405 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3406 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3407 return Error(Loc, "invalid cast opcode for cast from '" +
3408 getTypeString(Op->getType()) + "' to '" +
3409 getTypeString(DestTy) + "'");
3411 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3416 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3417 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3419 Value *Op0, *Op1, *Op2;
3420 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3421 ParseToken(lltok::comma, "expected ',' after select condition") ||
3422 ParseTypeAndValue(Op1, PFS) ||
3423 ParseToken(lltok::comma, "expected ',' after select value") ||
3424 ParseTypeAndValue(Op2, PFS))
3427 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3428 return Error(Loc, Reason);
3430 Inst = SelectInst::Create(Op0, Op1, Op2);
3435 /// ::= 'va_arg' TypeAndValue ',' Type
3436 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3440 if (ParseTypeAndValue(Op, PFS) ||
3441 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3442 ParseType(EltTy, TypeLoc))
3445 if (!EltTy->isFirstClassType())
3446 return Error(TypeLoc, "va_arg requires operand with first class type");
3448 Inst = new VAArgInst(Op, EltTy);
3452 /// ParseExtractElement
3453 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3454 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3457 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3458 ParseToken(lltok::comma, "expected ',' after extract value") ||
3459 ParseTypeAndValue(Op1, PFS))
3462 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3463 return Error(Loc, "invalid extractelement operands");
3465 Inst = ExtractElementInst::Create(Op0, Op1);
3469 /// ParseInsertElement
3470 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3471 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3473 Value *Op0, *Op1, *Op2;
3474 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3475 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3476 ParseTypeAndValue(Op1, PFS) ||
3477 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3478 ParseTypeAndValue(Op2, PFS))
3481 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3482 return Error(Loc, "invalid insertelement operands");
3484 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3488 /// ParseShuffleVector
3489 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3490 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3492 Value *Op0, *Op1, *Op2;
3493 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3494 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3495 ParseTypeAndValue(Op1, PFS) ||
3496 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3497 ParseTypeAndValue(Op2, PFS))
3500 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3501 return Error(Loc, "invalid shufflevector operands");
3503 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3508 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3509 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3510 Type *Ty = 0; LocTy TypeLoc;
3513 if (ParseType(Ty, TypeLoc) ||
3514 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3515 ParseValue(Ty, Op0, PFS) ||
3516 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3517 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3518 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3521 bool AteExtraComma = false;
3522 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3524 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3526 if (!EatIfPresent(lltok::comma))
3529 if (Lex.getKind() == lltok::MetadataVar) {
3530 AteExtraComma = true;
3534 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3535 ParseValue(Ty, Op0, PFS) ||
3536 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3537 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3538 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3542 if (!Ty->isFirstClassType())
3543 return Error(TypeLoc, "phi node must have first class type");
3545 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
3546 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3547 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3549 return AteExtraComma ? InstExtraComma : InstNormal;
3553 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
3555 /// ::= 'catch' TypeAndValue
3557 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
3558 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
3559 Type *Ty = 0; LocTy TyLoc;
3560 Value *PersFn; LocTy PersFnLoc;
3562 if (ParseType(Ty, TyLoc) ||
3563 ParseToken(lltok::kw_personality, "expected 'personality'") ||
3564 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
3567 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
3568 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
3570 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
3571 LandingPadInst::ClauseType CT;
3572 if (EatIfPresent(lltok::kw_catch))
3573 CT = LandingPadInst::Catch;
3574 else if (EatIfPresent(lltok::kw_filter))
3575 CT = LandingPadInst::Filter;
3577 return TokError("expected 'catch' or 'filter' clause type");
3579 Value *V; LocTy VLoc;
3580 if (ParseTypeAndValue(V, VLoc, PFS)) {
3585 // A 'catch' type expects a non-array constant. A filter clause expects an
3587 if (CT == LandingPadInst::Catch) {
3588 if (isa<ArrayType>(V->getType()))
3589 Error(VLoc, "'catch' clause has an invalid type");
3591 if (!isa<ArrayType>(V->getType()))
3592 Error(VLoc, "'filter' clause has an invalid type");
3603 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3604 /// ParameterList OptionalAttrs
3605 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3607 Attributes RetAttrs, FnAttrs;
3612 SmallVector<ParamInfo, 16> ArgList;
3613 LocTy CallLoc = Lex.getLoc();
3615 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3616 ParseOptionalCallingConv(CC) ||
3617 ParseOptionalAttrs(RetAttrs, 1) ||
3618 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3619 ParseValID(CalleeID) ||
3620 ParseParameterList(ArgList, PFS) ||
3621 ParseOptionalAttrs(FnAttrs, 2))
3624 // If RetType is a non-function pointer type, then this is the short syntax
3625 // for the call, which means that RetType is just the return type. Infer the
3626 // rest of the function argument types from the arguments that are present.
3627 PointerType *PFTy = 0;
3628 FunctionType *Ty = 0;
3629 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3630 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3631 // Pull out the types of all of the arguments...
3632 std::vector<Type*> ParamTypes;
3633 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3634 ParamTypes.push_back(ArgList[i].V->getType());
3636 if (!FunctionType::isValidReturnType(RetType))
3637 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3639 Ty = FunctionType::get(RetType, ParamTypes, false);
3640 PFTy = PointerType::getUnqual(Ty);
3643 // Look up the callee.
3645 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3647 // Set up the Attributes for the function.
3648 SmallVector<AttributeWithIndex, 8> Attrs;
3649 if (RetAttrs != Attribute::None)
3650 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3652 SmallVector<Value*, 8> Args;
3654 // Loop through FunctionType's arguments and ensure they are specified
3655 // correctly. Also, gather any parameter attributes.
3656 FunctionType::param_iterator I = Ty->param_begin();
3657 FunctionType::param_iterator E = Ty->param_end();
3658 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3659 Type *ExpectedTy = 0;
3662 } else if (!Ty->isVarArg()) {
3663 return Error(ArgList[i].Loc, "too many arguments specified");
3666 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3667 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3668 getTypeString(ExpectedTy) + "'");
3669 Args.push_back(ArgList[i].V);
3670 if (ArgList[i].Attrs != Attribute::None)
3671 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3675 return Error(CallLoc, "not enough parameters specified for call");
3677 if (FnAttrs != Attribute::None)
3678 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3680 // Finish off the Attributes and check them
3681 AttrListPtr PAL = AttrListPtr::get(Attrs);
3683 CallInst *CI = CallInst::Create(Callee, Args);
3684 CI->setTailCall(isTail);
3685 CI->setCallingConv(CC);
3686 CI->setAttributes(PAL);
3691 //===----------------------------------------------------------------------===//
3692 // Memory Instructions.
3693 //===----------------------------------------------------------------------===//
3696 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3697 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
3700 unsigned Alignment = 0;
3702 if (ParseType(Ty)) return true;
3704 bool AteExtraComma = false;
3705 if (EatIfPresent(lltok::comma)) {
3706 if (Lex.getKind() == lltok::kw_align) {
3707 if (ParseOptionalAlignment(Alignment)) return true;
3708 } else if (Lex.getKind() == lltok::MetadataVar) {
3709 AteExtraComma = true;
3711 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3712 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3717 if (Size && !Size->getType()->isIntegerTy())
3718 return Error(SizeLoc, "element count must have integer type");
3720 Inst = new AllocaInst(Ty, Size, Alignment);
3721 return AteExtraComma ? InstExtraComma : InstNormal;
3725 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
3726 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
3727 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
3728 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
3729 Value *Val; LocTy Loc;
3730 unsigned Alignment = 0;
3731 bool AteExtraComma = false;
3732 bool isAtomic = false;
3733 AtomicOrdering Ordering = NotAtomic;
3734 SynchronizationScope Scope = CrossThread;
3736 if (Lex.getKind() == lltok::kw_atomic) {
3741 bool isVolatile = false;
3742 if (Lex.getKind() == lltok::kw_volatile) {
3747 if (ParseTypeAndValue(Val, Loc, PFS) ||
3748 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
3749 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3752 if (!Val->getType()->isPointerTy() ||
3753 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3754 return Error(Loc, "load operand must be a pointer to a first class type");
3755 if (isAtomic && !Alignment)
3756 return Error(Loc, "atomic load must have explicit non-zero alignment");
3757 if (Ordering == Release || Ordering == AcquireRelease)
3758 return Error(Loc, "atomic load cannot use Release ordering");
3760 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
3761 return AteExtraComma ? InstExtraComma : InstNormal;
3766 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3767 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
3768 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
3769 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
3770 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3771 unsigned Alignment = 0;
3772 bool AteExtraComma = false;
3773 bool isAtomic = false;
3774 AtomicOrdering Ordering = NotAtomic;
3775 SynchronizationScope Scope = CrossThread;
3777 if (Lex.getKind() == lltok::kw_atomic) {
3782 bool isVolatile = false;
3783 if (Lex.getKind() == lltok::kw_volatile) {
3788 if (ParseTypeAndValue(Val, Loc, PFS) ||
3789 ParseToken(lltok::comma, "expected ',' after store operand") ||
3790 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3791 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
3792 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3795 if (!Ptr->getType()->isPointerTy())
3796 return Error(PtrLoc, "store operand must be a pointer");
3797 if (!Val->getType()->isFirstClassType())
3798 return Error(Loc, "store operand must be a first class value");
3799 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3800 return Error(Loc, "stored value and pointer type do not match");
3801 if (isAtomic && !Alignment)
3802 return Error(Loc, "atomic store must have explicit non-zero alignment");
3803 if (Ordering == Acquire || Ordering == AcquireRelease)
3804 return Error(Loc, "atomic store cannot use Acquire ordering");
3806 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
3807 return AteExtraComma ? InstExtraComma : InstNormal;
3811 /// ::= 'cmpxchg' 'volatile'? TypeAndValue ',' TypeAndValue ',' TypeAndValue
3812 /// 'singlethread'? AtomicOrdering
3813 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
3814 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
3815 bool AteExtraComma = false;
3816 AtomicOrdering Ordering = NotAtomic;
3817 SynchronizationScope Scope = CrossThread;
3818 bool isVolatile = false;
3820 if (EatIfPresent(lltok::kw_volatile))
3823 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3824 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
3825 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
3826 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
3827 ParseTypeAndValue(New, NewLoc, PFS) ||
3828 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
3831 if (Ordering == Unordered)
3832 return TokError("cmpxchg cannot be unordered");
3833 if (!Ptr->getType()->isPointerTy())
3834 return Error(PtrLoc, "cmpxchg operand must be a pointer");
3835 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
3836 return Error(CmpLoc, "compare value and pointer type do not match");
3837 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
3838 return Error(NewLoc, "new value and pointer type do not match");
3839 if (!New->getType()->isIntegerTy())
3840 return Error(NewLoc, "cmpxchg operand must be an integer");
3841 unsigned Size = New->getType()->getPrimitiveSizeInBits();
3842 if (Size < 8 || (Size & (Size - 1)))
3843 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
3846 AtomicCmpXchgInst *CXI =
3847 new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, Scope);
3848 CXI->setVolatile(isVolatile);
3850 return AteExtraComma ? InstExtraComma : InstNormal;
3854 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
3855 /// 'singlethread'? AtomicOrdering
3856 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
3857 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
3858 bool AteExtraComma = false;
3859 AtomicOrdering Ordering = NotAtomic;
3860 SynchronizationScope Scope = CrossThread;
3861 bool isVolatile = false;
3862 AtomicRMWInst::BinOp Operation;
3864 if (EatIfPresent(lltok::kw_volatile))
3867 switch (Lex.getKind()) {
3868 default: return TokError("expected binary operation in atomicrmw");
3869 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
3870 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
3871 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
3872 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
3873 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
3874 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
3875 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
3876 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
3877 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
3878 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
3879 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
3881 Lex.Lex(); // Eat the operation.
3883 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3884 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
3885 ParseTypeAndValue(Val, ValLoc, PFS) ||
3886 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
3889 if (Ordering == Unordered)
3890 return TokError("atomicrmw cannot be unordered");
3891 if (!Ptr->getType()->isPointerTy())
3892 return Error(PtrLoc, "atomicrmw operand must be a pointer");
3893 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3894 return Error(ValLoc, "atomicrmw value and pointer type do not match");
3895 if (!Val->getType()->isIntegerTy())
3896 return Error(ValLoc, "atomicrmw operand must be an integer");
3897 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
3898 if (Size < 8 || (Size & (Size - 1)))
3899 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
3902 AtomicRMWInst *RMWI =
3903 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
3904 RMWI->setVolatile(isVolatile);
3906 return AteExtraComma ? InstExtraComma : InstNormal;
3910 /// ::= 'fence' 'singlethread'? AtomicOrdering
3911 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
3912 AtomicOrdering Ordering = NotAtomic;
3913 SynchronizationScope Scope = CrossThread;
3914 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
3917 if (Ordering == Unordered)
3918 return TokError("fence cannot be unordered");
3919 if (Ordering == Monotonic)
3920 return TokError("fence cannot be monotonic");
3922 Inst = new FenceInst(Context, Ordering, Scope);
3926 /// ParseGetElementPtr
3927 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3928 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3933 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3935 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3937 if (!Ptr->getType()->getScalarType()->isPointerTy())
3938 return Error(Loc, "base of getelementptr must be a pointer");
3940 SmallVector<Value*, 16> Indices;
3941 bool AteExtraComma = false;
3942 while (EatIfPresent(lltok::comma)) {
3943 if (Lex.getKind() == lltok::MetadataVar) {
3944 AteExtraComma = true;
3947 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3948 if (!Val->getType()->getScalarType()->isIntegerTy())
3949 return Error(EltLoc, "getelementptr index must be an integer");
3950 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
3951 return Error(EltLoc, "getelementptr index type missmatch");
3952 if (Val->getType()->isVectorTy()) {
3953 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
3954 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
3955 if (ValNumEl != PtrNumEl)
3956 return Error(EltLoc,
3957 "getelementptr vector index has a wrong number of elements");
3959 Indices.push_back(Val);
3962 if (Val && Val->getType()->isVectorTy() && Indices.size() != 1)
3963 return Error(EltLoc, "vector getelementptrs must have a single index");
3965 if (!GetElementPtrInst::getIndexedType(Ptr->getType(), Indices))
3966 return Error(Loc, "invalid getelementptr indices");
3967 Inst = GetElementPtrInst::Create(Ptr, Indices);
3969 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3970 return AteExtraComma ? InstExtraComma : InstNormal;
3973 /// ParseExtractValue
3974 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3975 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3976 Value *Val; LocTy Loc;
3977 SmallVector<unsigned, 4> Indices;
3979 if (ParseTypeAndValue(Val, Loc, PFS) ||
3980 ParseIndexList(Indices, AteExtraComma))
3983 if (!Val->getType()->isAggregateType())
3984 return Error(Loc, "extractvalue operand must be aggregate type");
3986 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
3987 return Error(Loc, "invalid indices for extractvalue");
3988 Inst = ExtractValueInst::Create(Val, Indices);
3989 return AteExtraComma ? InstExtraComma : InstNormal;
3992 /// ParseInsertValue
3993 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3994 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3995 Value *Val0, *Val1; LocTy Loc0, Loc1;
3996 SmallVector<unsigned, 4> Indices;
3998 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3999 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4000 ParseTypeAndValue(Val1, Loc1, PFS) ||
4001 ParseIndexList(Indices, AteExtraComma))
4004 if (!Val0->getType()->isAggregateType())
4005 return Error(Loc0, "insertvalue operand must be aggregate type");
4007 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4008 return Error(Loc0, "invalid indices for insertvalue");
4009 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4010 return AteExtraComma ? InstExtraComma : InstNormal;
4013 //===----------------------------------------------------------------------===//
4014 // Embedded metadata.
4015 //===----------------------------------------------------------------------===//
4017 /// ParseMDNodeVector
4018 /// ::= Element (',' Element)*
4020 /// ::= 'null' | TypeAndValue
4021 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4022 PerFunctionState *PFS) {
4023 // Check for an empty list.
4024 if (Lex.getKind() == lltok::rbrace)
4028 // Null is a special case since it is typeless.
4029 if (EatIfPresent(lltok::kw_null)) {
4035 if (ParseTypeAndValue(V, PFS)) return true;
4037 } while (EatIfPresent(lltok::comma));