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: // FIXME: backwards compat.
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_linkonce_odr_auto_hide: // OptionalLinkage
194 case lltok::kw_appending: // OptionalLinkage
195 case lltok::kw_dllexport: // OptionalLinkage
196 case lltok::kw_common: // OptionalLinkage
197 case lltok::kw_dllimport: // OptionalLinkage
198 case lltok::kw_extern_weak: // OptionalLinkage
199 case lltok::kw_external: { // OptionalLinkage
200 unsigned Linkage, Visibility;
201 if (ParseOptionalLinkage(Linkage) ||
202 ParseOptionalVisibility(Visibility) ||
203 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
207 case lltok::kw_default: // OptionalVisibility
208 case lltok::kw_hidden: // OptionalVisibility
209 case lltok::kw_protected: { // OptionalVisibility
211 if (ParseOptionalVisibility(Visibility) ||
212 ParseGlobal("", SMLoc(), 0, false, Visibility))
217 case lltok::kw_thread_local: // OptionalThreadLocal
218 case lltok::kw_addrspace: // OptionalAddrSpace
219 case lltok::kw_constant: // GlobalType
220 case lltok::kw_global: // GlobalType
221 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
229 /// ::= 'module' 'asm' STRINGCONSTANT
230 bool LLParser::ParseModuleAsm() {
231 assert(Lex.getKind() == lltok::kw_module);
235 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
236 ParseStringConstant(AsmStr)) return true;
238 M->appendModuleInlineAsm(AsmStr);
243 /// ::= 'target' 'triple' '=' STRINGCONSTANT
244 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
245 bool LLParser::ParseTargetDefinition() {
246 assert(Lex.getKind() == lltok::kw_target);
249 default: return TokError("unknown target property");
250 case lltok::kw_triple:
252 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
253 ParseStringConstant(Str))
255 M->setTargetTriple(Str);
257 case lltok::kw_datalayout:
259 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
260 ParseStringConstant(Str))
262 M->setDataLayout(Str);
268 /// ::= 'deplibs' '=' '[' ']'
269 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
270 /// FIXME: Remove in 4.0. Currently parse, but ignore.
271 bool LLParser::ParseDepLibs() {
272 assert(Lex.getKind() == lltok::kw_deplibs);
274 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
275 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
278 if (EatIfPresent(lltok::rsquare))
283 if (ParseStringConstant(Str)) return true;
284 } while (EatIfPresent(lltok::comma));
286 return ParseToken(lltok::rsquare, "expected ']' at end of list");
289 /// ParseUnnamedType:
290 /// ::= LocalVarID '=' 'type' type
291 bool LLParser::ParseUnnamedType() {
292 LocTy TypeLoc = Lex.getLoc();
293 unsigned TypeID = Lex.getUIntVal();
294 Lex.Lex(); // eat LocalVarID;
296 if (ParseToken(lltok::equal, "expected '=' after name") ||
297 ParseToken(lltok::kw_type, "expected 'type' after '='"))
300 if (TypeID >= NumberedTypes.size())
301 NumberedTypes.resize(TypeID+1);
304 if (ParseStructDefinition(TypeLoc, "",
305 NumberedTypes[TypeID], Result)) return true;
307 if (!isa<StructType>(Result)) {
308 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
310 return Error(TypeLoc, "non-struct types may not be recursive");
311 Entry.first = Result;
312 Entry.second = SMLoc();
320 /// ::= LocalVar '=' 'type' type
321 bool LLParser::ParseNamedType() {
322 std::string Name = Lex.getStrVal();
323 LocTy NameLoc = Lex.getLoc();
324 Lex.Lex(); // eat LocalVar.
326 if (ParseToken(lltok::equal, "expected '=' after name") ||
327 ParseToken(lltok::kw_type, "expected 'type' after name"))
331 if (ParseStructDefinition(NameLoc, Name,
332 NamedTypes[Name], Result)) return true;
334 if (!isa<StructType>(Result)) {
335 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
337 return Error(NameLoc, "non-struct types may not be recursive");
338 Entry.first = Result;
339 Entry.second = SMLoc();
347 /// ::= 'declare' FunctionHeader
348 bool LLParser::ParseDeclare() {
349 assert(Lex.getKind() == lltok::kw_declare);
353 return ParseFunctionHeader(F, false);
357 /// ::= 'define' FunctionHeader '{' ...
358 bool LLParser::ParseDefine() {
359 assert(Lex.getKind() == lltok::kw_define);
363 return ParseFunctionHeader(F, true) ||
364 ParseFunctionBody(*F);
370 bool LLParser::ParseGlobalType(bool &IsConstant) {
371 if (Lex.getKind() == lltok::kw_constant)
373 else if (Lex.getKind() == lltok::kw_global)
377 return TokError("expected 'global' or 'constant'");
383 /// ParseUnnamedGlobal:
384 /// OptionalVisibility ALIAS ...
385 /// OptionalLinkage OptionalVisibility ... -> global variable
386 /// GlobalID '=' OptionalVisibility ALIAS ...
387 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
388 bool LLParser::ParseUnnamedGlobal() {
389 unsigned VarID = NumberedVals.size();
391 LocTy NameLoc = Lex.getLoc();
393 // Handle the GlobalID form.
394 if (Lex.getKind() == lltok::GlobalID) {
395 if (Lex.getUIntVal() != VarID)
396 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
398 Lex.Lex(); // eat GlobalID;
400 if (ParseToken(lltok::equal, "expected '=' after name"))
405 unsigned Linkage, Visibility;
406 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
407 ParseOptionalVisibility(Visibility))
410 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
411 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
412 return ParseAlias(Name, NameLoc, Visibility);
415 /// ParseNamedGlobal:
416 /// GlobalVar '=' OptionalVisibility ALIAS ...
417 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
418 bool LLParser::ParseNamedGlobal() {
419 assert(Lex.getKind() == lltok::GlobalVar);
420 LocTy NameLoc = Lex.getLoc();
421 std::string Name = Lex.getStrVal();
425 unsigned Linkage, Visibility;
426 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
427 ParseOptionalLinkage(Linkage, HasLinkage) ||
428 ParseOptionalVisibility(Visibility))
431 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
432 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
433 return ParseAlias(Name, NameLoc, Visibility);
437 // ::= '!' STRINGCONSTANT
438 bool LLParser::ParseMDString(MDString *&Result) {
440 if (ParseStringConstant(Str)) return true;
441 Result = MDString::get(Context, Str);
446 // ::= '!' MDNodeNumber
448 /// This version of ParseMDNodeID returns the slot number and null in the case
449 /// of a forward reference.
450 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
451 // !{ ..., !42, ... }
452 if (ParseUInt32(SlotNo)) return true;
454 // Check existing MDNode.
455 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != 0)
456 Result = NumberedMetadata[SlotNo];
462 bool LLParser::ParseMDNodeID(MDNode *&Result) {
463 // !{ ..., !42, ... }
465 if (ParseMDNodeID(Result, MID)) return true;
467 // If not a forward reference, just return it now.
468 if (Result) return false;
470 // Otherwise, create MDNode forward reference.
471 MDNode *FwdNode = MDNode::getTemporary(Context, ArrayRef<Value*>());
472 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
474 if (NumberedMetadata.size() <= MID)
475 NumberedMetadata.resize(MID+1);
476 NumberedMetadata[MID] = FwdNode;
481 /// ParseNamedMetadata:
482 /// !foo = !{ !1, !2 }
483 bool LLParser::ParseNamedMetadata() {
484 assert(Lex.getKind() == lltok::MetadataVar);
485 std::string Name = Lex.getStrVal();
488 if (ParseToken(lltok::equal, "expected '=' here") ||
489 ParseToken(lltok::exclaim, "Expected '!' here") ||
490 ParseToken(lltok::lbrace, "Expected '{' here"))
493 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
494 if (Lex.getKind() != lltok::rbrace)
496 if (ParseToken(lltok::exclaim, "Expected '!' here"))
500 if (ParseMDNodeID(N)) return true;
502 } while (EatIfPresent(lltok::comma));
504 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
510 /// ParseStandaloneMetadata:
512 bool LLParser::ParseStandaloneMetadata() {
513 assert(Lex.getKind() == lltok::exclaim);
515 unsigned MetadataID = 0;
519 SmallVector<Value *, 16> Elts;
520 if (ParseUInt32(MetadataID) ||
521 ParseToken(lltok::equal, "expected '=' here") ||
522 ParseType(Ty, TyLoc) ||
523 ParseToken(lltok::exclaim, "Expected '!' here") ||
524 ParseToken(lltok::lbrace, "Expected '{' here") ||
525 ParseMDNodeVector(Elts, NULL) ||
526 ParseToken(lltok::rbrace, "expected end of metadata node"))
529 MDNode *Init = MDNode::get(Context, Elts);
531 // See if this was forward referenced, if so, handle it.
532 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
533 FI = ForwardRefMDNodes.find(MetadataID);
534 if (FI != ForwardRefMDNodes.end()) {
535 MDNode *Temp = FI->second.first;
536 Temp->replaceAllUsesWith(Init);
537 MDNode::deleteTemporary(Temp);
538 ForwardRefMDNodes.erase(FI);
540 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
542 if (MetadataID >= NumberedMetadata.size())
543 NumberedMetadata.resize(MetadataID+1);
545 if (NumberedMetadata[MetadataID] != 0)
546 return TokError("Metadata id is already used");
547 NumberedMetadata[MetadataID] = Init;
554 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
557 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
558 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
560 /// Everything through visibility has already been parsed.
562 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
563 unsigned Visibility) {
564 assert(Lex.getKind() == lltok::kw_alias);
567 LocTy LinkageLoc = Lex.getLoc();
568 if (ParseOptionalLinkage(Linkage))
571 if (Linkage != GlobalValue::ExternalLinkage &&
572 Linkage != GlobalValue::WeakAnyLinkage &&
573 Linkage != GlobalValue::WeakODRLinkage &&
574 Linkage != GlobalValue::InternalLinkage &&
575 Linkage != GlobalValue::PrivateLinkage &&
576 Linkage != GlobalValue::LinkerPrivateLinkage &&
577 Linkage != GlobalValue::LinkerPrivateWeakLinkage)
578 return Error(LinkageLoc, "invalid linkage type for alias");
581 LocTy AliaseeLoc = Lex.getLoc();
582 if (Lex.getKind() != lltok::kw_bitcast &&
583 Lex.getKind() != lltok::kw_getelementptr) {
584 if (ParseGlobalTypeAndValue(Aliasee)) return true;
586 // The bitcast dest type is not present, it is implied by the dest type.
588 if (ParseValID(ID)) return true;
589 if (ID.Kind != ValID::t_Constant)
590 return Error(AliaseeLoc, "invalid aliasee");
591 Aliasee = ID.ConstantVal;
594 if (!Aliasee->getType()->isPointerTy())
595 return Error(AliaseeLoc, "alias must have pointer type");
597 // Okay, create the alias but do not insert it into the module yet.
598 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
599 (GlobalValue::LinkageTypes)Linkage, Name,
601 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
603 // See if this value already exists in the symbol table. If so, it is either
604 // a redefinition or a definition of a forward reference.
605 if (GlobalValue *Val = M->getNamedValue(Name)) {
606 // See if this was a redefinition. If so, there is no entry in
608 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
609 I = ForwardRefVals.find(Name);
610 if (I == ForwardRefVals.end())
611 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
613 // Otherwise, this was a definition of forward ref. Verify that types
615 if (Val->getType() != GA->getType())
616 return Error(NameLoc,
617 "forward reference and definition of alias have different types");
619 // If they agree, just RAUW the old value with the alias and remove the
621 Val->replaceAllUsesWith(GA);
622 Val->eraseFromParent();
623 ForwardRefVals.erase(I);
626 // Insert into the module, we know its name won't collide now.
627 M->getAliasList().push_back(GA);
628 assert(GA->getName() == Name && "Should not be a name conflict!");
634 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
635 /// OptionalAddrSpace OptionalUnNammedAddr GlobalType Type Const
636 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
637 /// OptionalAddrSpace OptionalUnNammedAddr GlobalType Type Const
639 /// Everything through visibility has been parsed already.
641 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
642 unsigned Linkage, bool HasLinkage,
643 unsigned Visibility) {
645 bool IsConstant, UnnamedAddr;
646 GlobalVariable::ThreadLocalMode TLM;
647 LocTy UnnamedAddrLoc;
651 if (ParseOptionalThreadLocal(TLM) ||
652 ParseOptionalAddrSpace(AddrSpace) ||
653 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
655 ParseGlobalType(IsConstant) ||
656 ParseType(Ty, TyLoc))
659 // If the linkage is specified and is external, then no initializer is
662 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
663 Linkage != GlobalValue::ExternalWeakLinkage &&
664 Linkage != GlobalValue::ExternalLinkage)) {
665 if (ParseGlobalValue(Ty, Init))
669 if (Ty->isFunctionTy() || Ty->isLabelTy())
670 return Error(TyLoc, "invalid type for global variable");
672 GlobalVariable *GV = 0;
674 // See if the global was forward referenced, if so, use the global.
676 if (GlobalValue *GVal = M->getNamedValue(Name)) {
677 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
678 return Error(NameLoc, "redefinition of global '@" + Name + "'");
679 GV = cast<GlobalVariable>(GVal);
682 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
683 I = ForwardRefValIDs.find(NumberedVals.size());
684 if (I != ForwardRefValIDs.end()) {
685 GV = cast<GlobalVariable>(I->second.first);
686 ForwardRefValIDs.erase(I);
691 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
692 Name, 0, GlobalVariable::NotThreadLocal,
695 if (GV->getType()->getElementType() != Ty)
697 "forward reference and definition of global have different types");
699 // Move the forward-reference to the correct spot in the module.
700 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
704 NumberedVals.push_back(GV);
706 // Set the parsed properties on the global.
708 GV->setInitializer(Init);
709 GV->setConstant(IsConstant);
710 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
711 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
712 GV->setThreadLocalMode(TLM);
713 GV->setUnnamedAddr(UnnamedAddr);
715 // Parse attributes on the global.
716 while (Lex.getKind() == lltok::comma) {
719 if (Lex.getKind() == lltok::kw_section) {
721 GV->setSection(Lex.getStrVal());
722 if (ParseToken(lltok::StringConstant, "expected global section string"))
724 } else if (Lex.getKind() == lltok::kw_align) {
726 if (ParseOptionalAlignment(Alignment)) return true;
727 GV->setAlignment(Alignment);
729 TokError("unknown global variable property!");
737 //===----------------------------------------------------------------------===//
738 // GlobalValue Reference/Resolution Routines.
739 //===----------------------------------------------------------------------===//
741 /// GetGlobalVal - Get a value with the specified name or ID, creating a
742 /// forward reference record if needed. This can return null if the value
743 /// exists but does not have the right type.
744 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
746 PointerType *PTy = dyn_cast<PointerType>(Ty);
748 Error(Loc, "global variable reference must have pointer type");
752 // Look this name up in the normal function symbol table.
754 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
756 // If this is a forward reference for the value, see if we already created a
757 // forward ref record.
759 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
760 I = ForwardRefVals.find(Name);
761 if (I != ForwardRefVals.end())
762 Val = I->second.first;
765 // If we have the value in the symbol table or fwd-ref table, return it.
767 if (Val->getType() == Ty) return Val;
768 Error(Loc, "'@" + Name + "' defined with type '" +
769 getTypeString(Val->getType()) + "'");
773 // Otherwise, create a new forward reference for this value and remember it.
775 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
776 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
778 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
779 GlobalValue::ExternalWeakLinkage, 0, Name,
780 0, GlobalVariable::NotThreadLocal,
781 PTy->getAddressSpace());
783 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
787 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
788 PointerType *PTy = dyn_cast<PointerType>(Ty);
790 Error(Loc, "global variable reference must have pointer type");
794 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
796 // If this is a forward reference for the value, see if we already created a
797 // forward ref record.
799 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
800 I = ForwardRefValIDs.find(ID);
801 if (I != ForwardRefValIDs.end())
802 Val = I->second.first;
805 // If we have the value in the symbol table or fwd-ref table, return it.
807 if (Val->getType() == Ty) return Val;
808 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
809 getTypeString(Val->getType()) + "'");
813 // Otherwise, create a new forward reference for this value and remember it.
815 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
816 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
818 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
819 GlobalValue::ExternalWeakLinkage, 0, "");
821 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
826 //===----------------------------------------------------------------------===//
828 //===----------------------------------------------------------------------===//
830 /// ParseToken - If the current token has the specified kind, eat it and return
831 /// success. Otherwise, emit the specified error and return failure.
832 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
833 if (Lex.getKind() != T)
834 return TokError(ErrMsg);
839 /// ParseStringConstant
840 /// ::= StringConstant
841 bool LLParser::ParseStringConstant(std::string &Result) {
842 if (Lex.getKind() != lltok::StringConstant)
843 return TokError("expected string constant");
844 Result = Lex.getStrVal();
851 bool LLParser::ParseUInt32(unsigned &Val) {
852 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
853 return TokError("expected integer");
854 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
855 if (Val64 != unsigned(Val64))
856 return TokError("expected 32-bit integer (too large)");
863 /// := 'localdynamic'
866 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
867 switch (Lex.getKind()) {
869 return TokError("expected localdynamic, initialexec or localexec");
870 case lltok::kw_localdynamic:
871 TLM = GlobalVariable::LocalDynamicTLSModel;
873 case lltok::kw_initialexec:
874 TLM = GlobalVariable::InitialExecTLSModel;
876 case lltok::kw_localexec:
877 TLM = GlobalVariable::LocalExecTLSModel;
885 /// ParseOptionalThreadLocal
887 /// := 'thread_local'
888 /// := 'thread_local' '(' tlsmodel ')'
889 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
890 TLM = GlobalVariable::NotThreadLocal;
891 if (!EatIfPresent(lltok::kw_thread_local))
894 TLM = GlobalVariable::GeneralDynamicTLSModel;
895 if (Lex.getKind() == lltok::lparen) {
897 return ParseTLSModel(TLM) ||
898 ParseToken(lltok::rparen, "expected ')' after thread local model");
903 /// ParseOptionalAddrSpace
905 /// := 'addrspace' '(' uint32 ')'
906 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
908 if (!EatIfPresent(lltok::kw_addrspace))
910 return ParseToken(lltok::lparen, "expected '(' in address space") ||
911 ParseUInt32(AddrSpace) ||
912 ParseToken(lltok::rparen, "expected ')' in address space");
915 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
916 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
917 /// 2: function attr.
918 bool LLParser::ParseOptionalAttrs(AttrBuilder &B, unsigned AttrKind) {
919 LocTy AttrLoc = Lex.getLoc();
920 bool HaveError = false;
925 lltok::Kind Token = Lex.getKind();
927 default: // End of attributes.
929 case lltok::kw_zeroext: B.addAttribute(Attributes::ZExt); break;
930 case lltok::kw_signext: B.addAttribute(Attributes::SExt); break;
931 case lltok::kw_inreg: B.addAttribute(Attributes::InReg); break;
932 case lltok::kw_sret: B.addAttribute(Attributes::StructRet); break;
933 case lltok::kw_noalias: B.addAttribute(Attributes::NoAlias); break;
934 case lltok::kw_nocapture: B.addAttribute(Attributes::NoCapture); break;
935 case lltok::kw_byval: B.addAttribute(Attributes::ByVal); break;
936 case lltok::kw_nest: B.addAttribute(Attributes::Nest); break;
938 case lltok::kw_noreturn: B.addAttribute(Attributes::NoReturn); break;
939 case lltok::kw_nounwind: B.addAttribute(Attributes::NoUnwind); break;
940 case lltok::kw_uwtable: B.addAttribute(Attributes::UWTable); break;
941 case lltok::kw_returns_twice: B.addAttribute(Attributes::ReturnsTwice); break;
942 case lltok::kw_noinline: B.addAttribute(Attributes::NoInline); break;
943 case lltok::kw_readnone: B.addAttribute(Attributes::ReadNone); break;
944 case lltok::kw_readonly: B.addAttribute(Attributes::ReadOnly); break;
945 case lltok::kw_inlinehint: B.addAttribute(Attributes::InlineHint); break;
946 case lltok::kw_alwaysinline: B.addAttribute(Attributes::AlwaysInline); break;
947 case lltok::kw_optsize: B.addAttribute(Attributes::OptimizeForSize); break;
948 case lltok::kw_ssp: B.addAttribute(Attributes::StackProtect); break;
949 case lltok::kw_sspreq: B.addAttribute(Attributes::StackProtectReq); break;
950 case lltok::kw_noredzone: B.addAttribute(Attributes::NoRedZone); break;
951 case lltok::kw_noimplicitfloat: B.addAttribute(Attributes::NoImplicitFloat); break;
952 case lltok::kw_naked: B.addAttribute(Attributes::Naked); break;
953 case lltok::kw_nonlazybind: B.addAttribute(Attributes::NonLazyBind); break;
954 case lltok::kw_address_safety: B.addAttribute(Attributes::AddressSafety); break;
955 case lltok::kw_minsize: B.addAttribute(Attributes::MinSize); break;
957 case lltok::kw_alignstack: {
959 if (ParseOptionalStackAlignment(Alignment))
961 B.addStackAlignmentAttr(Alignment);
965 case lltok::kw_align: {
967 if (ParseOptionalAlignment(Alignment))
969 B.addAlignmentAttr(Alignment);
975 // Perform some error checking.
979 HaveError |= Error(AttrLoc, "invalid use of attribute on a function");
981 case lltok::kw_align:
982 // As a hack, we allow "align 2" on functions as a synonym for
988 case lltok::kw_nocapture:
989 case lltok::kw_byval:
992 HaveError |= Error(AttrLoc, "invalid use of parameter-only attribute");
996 case lltok::kw_noreturn:
997 case lltok::kw_nounwind:
998 case lltok::kw_readnone:
999 case lltok::kw_readonly:
1000 case lltok::kw_noinline:
1001 case lltok::kw_alwaysinline:
1002 case lltok::kw_optsize:
1004 case lltok::kw_sspreq:
1005 case lltok::kw_noredzone:
1006 case lltok::kw_noimplicitfloat:
1007 case lltok::kw_naked:
1008 case lltok::kw_inlinehint:
1009 case lltok::kw_alignstack:
1010 case lltok::kw_uwtable:
1011 case lltok::kw_nonlazybind:
1012 case lltok::kw_returns_twice:
1013 case lltok::kw_address_safety:
1014 case lltok::kw_minsize:
1016 HaveError |= Error(AttrLoc, "invalid use of function-only attribute");
1024 /// ParseOptionalLinkage
1027 /// ::= 'linker_private'
1028 /// ::= 'linker_private_weak'
1033 /// ::= 'linkonce_odr'
1034 /// ::= 'linkonce_odr_auto_hide'
1035 /// ::= 'available_externally'
1040 /// ::= 'extern_weak'
1042 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1044 switch (Lex.getKind()) {
1045 default: Res=GlobalValue::ExternalLinkage; return false;
1046 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1047 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1048 case lltok::kw_linker_private_weak:
1049 Res = GlobalValue::LinkerPrivateWeakLinkage;
1051 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1052 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1053 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1054 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1055 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1056 case lltok::kw_linkonce_odr_auto_hide:
1057 case lltok::kw_linker_private_weak_def_auto: // FIXME: For backwards compat.
1058 Res = GlobalValue::LinkOnceODRAutoHideLinkage;
1060 case lltok::kw_available_externally:
1061 Res = GlobalValue::AvailableExternallyLinkage;
1063 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1064 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1065 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1066 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1067 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1068 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1075 /// ParseOptionalVisibility
1081 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1082 switch (Lex.getKind()) {
1083 default: Res = GlobalValue::DefaultVisibility; return false;
1084 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1085 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1086 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1092 /// ParseOptionalCallingConv
1096 /// ::= 'kw_intel_ocl_bicc'
1098 /// ::= 'x86_stdcallcc'
1099 /// ::= 'x86_fastcallcc'
1100 /// ::= 'x86_thiscallcc'
1101 /// ::= 'arm_apcscc'
1102 /// ::= 'arm_aapcscc'
1103 /// ::= 'arm_aapcs_vfpcc'
1104 /// ::= 'msp430_intrcc'
1105 /// ::= 'ptx_kernel'
1106 /// ::= 'ptx_device'
1108 /// ::= 'spir_kernel'
1111 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1112 switch (Lex.getKind()) {
1113 default: CC = CallingConv::C; return false;
1114 case lltok::kw_ccc: CC = CallingConv::C; break;
1115 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1116 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1117 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1118 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1119 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1120 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1121 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1122 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1123 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1124 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1125 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1126 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1127 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1128 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1129 case lltok::kw_cc: {
1130 unsigned ArbitraryCC;
1132 if (ParseUInt32(ArbitraryCC))
1134 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1143 /// ParseInstructionMetadata
1144 /// ::= !dbg !42 (',' !dbg !57)*
1145 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1146 PerFunctionState *PFS) {
1148 if (Lex.getKind() != lltok::MetadataVar)
1149 return TokError("expected metadata after comma");
1151 std::string Name = Lex.getStrVal();
1152 unsigned MDK = M->getMDKindID(Name);
1156 SMLoc Loc = Lex.getLoc();
1158 if (ParseToken(lltok::exclaim, "expected '!' here"))
1161 // This code is similar to that of ParseMetadataValue, however it needs to
1162 // have special-case code for a forward reference; see the comments on
1163 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1164 // at the top level here.
1165 if (Lex.getKind() == lltok::lbrace) {
1167 if (ParseMetadataListValue(ID, PFS))
1169 assert(ID.Kind == ValID::t_MDNode);
1170 Inst->setMetadata(MDK, ID.MDNodeVal);
1172 unsigned NodeID = 0;
1173 if (ParseMDNodeID(Node, NodeID))
1176 // If we got the node, add it to the instruction.
1177 Inst->setMetadata(MDK, Node);
1179 MDRef R = { Loc, MDK, NodeID };
1180 // Otherwise, remember that this should be resolved later.
1181 ForwardRefInstMetadata[Inst].push_back(R);
1185 // If this is the end of the list, we're done.
1186 } while (EatIfPresent(lltok::comma));
1190 /// ParseOptionalAlignment
1193 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1195 if (!EatIfPresent(lltok::kw_align))
1197 LocTy AlignLoc = Lex.getLoc();
1198 if (ParseUInt32(Alignment)) return true;
1199 if (!isPowerOf2_32(Alignment))
1200 return Error(AlignLoc, "alignment is not a power of two");
1201 if (Alignment > Value::MaximumAlignment)
1202 return Error(AlignLoc, "huge alignments are not supported yet");
1206 /// ParseOptionalCommaAlign
1210 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1212 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1213 bool &AteExtraComma) {
1214 AteExtraComma = false;
1215 while (EatIfPresent(lltok::comma)) {
1216 // Metadata at the end is an early exit.
1217 if (Lex.getKind() == lltok::MetadataVar) {
1218 AteExtraComma = true;
1222 if (Lex.getKind() != lltok::kw_align)
1223 return Error(Lex.getLoc(), "expected metadata or 'align'");
1225 if (ParseOptionalAlignment(Alignment)) return true;
1231 /// ParseScopeAndOrdering
1232 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1235 /// This sets Scope and Ordering to the parsed values.
1236 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1237 AtomicOrdering &Ordering) {
1241 Scope = CrossThread;
1242 if (EatIfPresent(lltok::kw_singlethread))
1243 Scope = SingleThread;
1244 switch (Lex.getKind()) {
1245 default: return TokError("Expected ordering on atomic instruction");
1246 case lltok::kw_unordered: Ordering = Unordered; break;
1247 case lltok::kw_monotonic: Ordering = Monotonic; break;
1248 case lltok::kw_acquire: Ordering = Acquire; break;
1249 case lltok::kw_release: Ordering = Release; break;
1250 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1251 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1257 /// ParseOptionalStackAlignment
1259 /// ::= 'alignstack' '(' 4 ')'
1260 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1262 if (!EatIfPresent(lltok::kw_alignstack))
1264 LocTy ParenLoc = Lex.getLoc();
1265 if (!EatIfPresent(lltok::lparen))
1266 return Error(ParenLoc, "expected '('");
1267 LocTy AlignLoc = Lex.getLoc();
1268 if (ParseUInt32(Alignment)) return true;
1269 ParenLoc = Lex.getLoc();
1270 if (!EatIfPresent(lltok::rparen))
1271 return Error(ParenLoc, "expected ')'");
1272 if (!isPowerOf2_32(Alignment))
1273 return Error(AlignLoc, "stack alignment is not a power of two");
1277 /// ParseIndexList - This parses the index list for an insert/extractvalue
1278 /// instruction. This sets AteExtraComma in the case where we eat an extra
1279 /// comma at the end of the line and find that it is followed by metadata.
1280 /// Clients that don't allow metadata can call the version of this function that
1281 /// only takes one argument.
1284 /// ::= (',' uint32)+
1286 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1287 bool &AteExtraComma) {
1288 AteExtraComma = false;
1290 if (Lex.getKind() != lltok::comma)
1291 return TokError("expected ',' as start of index list");
1293 while (EatIfPresent(lltok::comma)) {
1294 if (Lex.getKind() == lltok::MetadataVar) {
1295 AteExtraComma = true;
1299 if (ParseUInt32(Idx)) return true;
1300 Indices.push_back(Idx);
1306 //===----------------------------------------------------------------------===//
1308 //===----------------------------------------------------------------------===//
1310 /// ParseType - Parse a type.
1311 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1312 SMLoc TypeLoc = Lex.getLoc();
1313 switch (Lex.getKind()) {
1315 return TokError("expected type");
1317 // Type ::= 'float' | 'void' (etc)
1318 Result = Lex.getTyVal();
1322 // Type ::= StructType
1323 if (ParseAnonStructType(Result, false))
1326 case lltok::lsquare:
1327 // Type ::= '[' ... ']'
1328 Lex.Lex(); // eat the lsquare.
1329 if (ParseArrayVectorType(Result, false))
1332 case lltok::less: // Either vector or packed struct.
1333 // Type ::= '<' ... '>'
1335 if (Lex.getKind() == lltok::lbrace) {
1336 if (ParseAnonStructType(Result, true) ||
1337 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1339 } else if (ParseArrayVectorType(Result, true))
1342 case lltok::LocalVar: {
1344 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1346 // If the type hasn't been defined yet, create a forward definition and
1347 // remember where that forward def'n was seen (in case it never is defined).
1348 if (Entry.first == 0) {
1349 Entry.first = StructType::create(Context, Lex.getStrVal());
1350 Entry.second = Lex.getLoc();
1352 Result = Entry.first;
1357 case lltok::LocalVarID: {
1359 if (Lex.getUIntVal() >= NumberedTypes.size())
1360 NumberedTypes.resize(Lex.getUIntVal()+1);
1361 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1363 // If the type hasn't been defined yet, create a forward definition and
1364 // remember where that forward def'n was seen (in case it never is defined).
1365 if (Entry.first == 0) {
1366 Entry.first = StructType::create(Context);
1367 Entry.second = Lex.getLoc();
1369 Result = Entry.first;
1375 // Parse the type suffixes.
1377 switch (Lex.getKind()) {
1380 if (!AllowVoid && Result->isVoidTy())
1381 return Error(TypeLoc, "void type only allowed for function results");
1384 // Type ::= Type '*'
1386 if (Result->isLabelTy())
1387 return TokError("basic block pointers are invalid");
1388 if (Result->isVoidTy())
1389 return TokError("pointers to void are invalid - use i8* instead");
1390 if (!PointerType::isValidElementType(Result))
1391 return TokError("pointer to this type is invalid");
1392 Result = PointerType::getUnqual(Result);
1396 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1397 case lltok::kw_addrspace: {
1398 if (Result->isLabelTy())
1399 return TokError("basic block pointers are invalid");
1400 if (Result->isVoidTy())
1401 return TokError("pointers to void are invalid; use i8* instead");
1402 if (!PointerType::isValidElementType(Result))
1403 return TokError("pointer to this type is invalid");
1405 if (ParseOptionalAddrSpace(AddrSpace) ||
1406 ParseToken(lltok::star, "expected '*' in address space"))
1409 Result = PointerType::get(Result, AddrSpace);
1413 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1415 if (ParseFunctionType(Result))
1422 /// ParseParameterList
1424 /// ::= '(' Arg (',' Arg)* ')'
1426 /// ::= Type OptionalAttributes Value OptionalAttributes
1427 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1428 PerFunctionState &PFS) {
1429 if (ParseToken(lltok::lparen, "expected '(' in call"))
1432 while (Lex.getKind() != lltok::rparen) {
1433 // If this isn't the first argument, we need a comma.
1434 if (!ArgList.empty() &&
1435 ParseToken(lltok::comma, "expected ',' in argument list"))
1438 // Parse the argument.
1441 AttrBuilder ArgAttrs;
1443 if (ParseType(ArgTy, ArgLoc))
1446 // Otherwise, handle normal operands.
1447 if (ParseOptionalAttrs(ArgAttrs, 0) || ParseValue(ArgTy, V, PFS))
1449 ArgList.push_back(ParamInfo(ArgLoc, V, Attributes::get(V->getContext(),
1453 Lex.Lex(); // Lex the ')'.
1459 /// ParseArgumentList - Parse the argument list for a function type or function
1461 /// ::= '(' ArgTypeListI ')'
1465 /// ::= ArgTypeList ',' '...'
1466 /// ::= ArgType (',' ArgType)*
1468 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1471 assert(Lex.getKind() == lltok::lparen);
1472 Lex.Lex(); // eat the (.
1474 if (Lex.getKind() == lltok::rparen) {
1476 } else if (Lex.getKind() == lltok::dotdotdot) {
1480 LocTy TypeLoc = Lex.getLoc();
1485 if (ParseType(ArgTy) ||
1486 ParseOptionalAttrs(Attrs, 0)) return true;
1488 if (ArgTy->isVoidTy())
1489 return Error(TypeLoc, "argument can not have void type");
1491 if (Lex.getKind() == lltok::LocalVar) {
1492 Name = Lex.getStrVal();
1496 if (!FunctionType::isValidArgumentType(ArgTy))
1497 return Error(TypeLoc, "invalid type for function argument");
1499 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1500 Attributes::get(ArgTy->getContext(),
1503 while (EatIfPresent(lltok::comma)) {
1504 // Handle ... at end of arg list.
1505 if (EatIfPresent(lltok::dotdotdot)) {
1510 // Otherwise must be an argument type.
1511 TypeLoc = Lex.getLoc();
1512 if (ParseType(ArgTy) || ParseOptionalAttrs(Attrs, 0)) return true;
1514 if (ArgTy->isVoidTy())
1515 return Error(TypeLoc, "argument can not have void type");
1517 if (Lex.getKind() == lltok::LocalVar) {
1518 Name = Lex.getStrVal();
1524 if (!ArgTy->isFirstClassType())
1525 return Error(TypeLoc, "invalid type for function argument");
1527 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1528 Attributes::get(ArgTy->getContext(), Attrs),
1533 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1536 /// ParseFunctionType
1537 /// ::= Type ArgumentList OptionalAttrs
1538 bool LLParser::ParseFunctionType(Type *&Result) {
1539 assert(Lex.getKind() == lltok::lparen);
1541 if (!FunctionType::isValidReturnType(Result))
1542 return TokError("invalid function return type");
1544 SmallVector<ArgInfo, 8> ArgList;
1546 if (ParseArgumentList(ArgList, isVarArg))
1549 // Reject names on the arguments lists.
1550 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1551 if (!ArgList[i].Name.empty())
1552 return Error(ArgList[i].Loc, "argument name invalid in function type");
1553 if (ArgList[i].Attrs.hasAttributes())
1554 return Error(ArgList[i].Loc,
1555 "argument attributes invalid in function type");
1558 SmallVector<Type*, 16> ArgListTy;
1559 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1560 ArgListTy.push_back(ArgList[i].Ty);
1562 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1566 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1568 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1569 SmallVector<Type*, 8> Elts;
1570 if (ParseStructBody(Elts)) return true;
1572 Result = StructType::get(Context, Elts, Packed);
1576 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1577 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1578 std::pair<Type*, LocTy> &Entry,
1580 // If the type was already defined, diagnose the redefinition.
1581 if (Entry.first && !Entry.second.isValid())
1582 return Error(TypeLoc, "redefinition of type");
1584 // If we have opaque, just return without filling in the definition for the
1585 // struct. This counts as a definition as far as the .ll file goes.
1586 if (EatIfPresent(lltok::kw_opaque)) {
1587 // This type is being defined, so clear the location to indicate this.
1588 Entry.second = SMLoc();
1590 // If this type number has never been uttered, create it.
1591 if (Entry.first == 0)
1592 Entry.first = StructType::create(Context, Name);
1593 ResultTy = Entry.first;
1597 // If the type starts with '<', then it is either a packed struct or a vector.
1598 bool isPacked = EatIfPresent(lltok::less);
1600 // If we don't have a struct, then we have a random type alias, which we
1601 // accept for compatibility with old files. These types are not allowed to be
1602 // forward referenced and not allowed to be recursive.
1603 if (Lex.getKind() != lltok::lbrace) {
1605 return Error(TypeLoc, "forward references to non-struct type");
1609 return ParseArrayVectorType(ResultTy, true);
1610 return ParseType(ResultTy);
1613 // This type is being defined, so clear the location to indicate this.
1614 Entry.second = SMLoc();
1616 // If this type number has never been uttered, create it.
1617 if (Entry.first == 0)
1618 Entry.first = StructType::create(Context, Name);
1620 StructType *STy = cast<StructType>(Entry.first);
1622 SmallVector<Type*, 8> Body;
1623 if (ParseStructBody(Body) ||
1624 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
1627 STy->setBody(Body, isPacked);
1633 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1636 /// ::= '{' Type (',' Type)* '}'
1637 /// ::= '<' '{' '}' '>'
1638 /// ::= '<' '{' Type (',' Type)* '}' '>'
1639 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
1640 assert(Lex.getKind() == lltok::lbrace);
1641 Lex.Lex(); // Consume the '{'
1643 // Handle the empty struct.
1644 if (EatIfPresent(lltok::rbrace))
1647 LocTy EltTyLoc = Lex.getLoc();
1649 if (ParseType(Ty)) return true;
1652 if (!StructType::isValidElementType(Ty))
1653 return Error(EltTyLoc, "invalid element type for struct");
1655 while (EatIfPresent(lltok::comma)) {
1656 EltTyLoc = Lex.getLoc();
1657 if (ParseType(Ty)) return true;
1659 if (!StructType::isValidElementType(Ty))
1660 return Error(EltTyLoc, "invalid element type for struct");
1665 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
1668 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1669 /// token has already been consumed.
1671 /// ::= '[' APSINTVAL 'x' Types ']'
1672 /// ::= '<' APSINTVAL 'x' Types '>'
1673 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
1674 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1675 Lex.getAPSIntVal().getBitWidth() > 64)
1676 return TokError("expected number in address space");
1678 LocTy SizeLoc = Lex.getLoc();
1679 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1682 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1685 LocTy TypeLoc = Lex.getLoc();
1687 if (ParseType(EltTy)) return true;
1689 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1690 "expected end of sequential type"))
1695 return Error(SizeLoc, "zero element vector is illegal");
1696 if ((unsigned)Size != Size)
1697 return Error(SizeLoc, "size too large for vector");
1698 if (!VectorType::isValidElementType(EltTy))
1699 return Error(TypeLoc, "invalid vector element type");
1700 Result = VectorType::get(EltTy, unsigned(Size));
1702 if (!ArrayType::isValidElementType(EltTy))
1703 return Error(TypeLoc, "invalid array element type");
1704 Result = ArrayType::get(EltTy, Size);
1709 //===----------------------------------------------------------------------===//
1710 // Function Semantic Analysis.
1711 //===----------------------------------------------------------------------===//
1713 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1715 : P(p), F(f), FunctionNumber(functionNumber) {
1717 // Insert unnamed arguments into the NumberedVals list.
1718 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1721 NumberedVals.push_back(AI);
1724 LLParser::PerFunctionState::~PerFunctionState() {
1725 // If there were any forward referenced non-basicblock values, delete them.
1726 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1727 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1728 if (!isa<BasicBlock>(I->second.first)) {
1729 I->second.first->replaceAllUsesWith(
1730 UndefValue::get(I->second.first->getType()));
1731 delete I->second.first;
1732 I->second.first = 0;
1735 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1736 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1737 if (!isa<BasicBlock>(I->second.first)) {
1738 I->second.first->replaceAllUsesWith(
1739 UndefValue::get(I->second.first->getType()));
1740 delete I->second.first;
1741 I->second.first = 0;
1745 bool LLParser::PerFunctionState::FinishFunction() {
1746 // Check to see if someone took the address of labels in this block.
1747 if (!P.ForwardRefBlockAddresses.empty()) {
1749 if (!F.getName().empty()) {
1750 FunctionID.Kind = ValID::t_GlobalName;
1751 FunctionID.StrVal = F.getName();
1753 FunctionID.Kind = ValID::t_GlobalID;
1754 FunctionID.UIntVal = FunctionNumber;
1757 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1758 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1759 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1760 // Resolve all these references.
1761 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1764 P.ForwardRefBlockAddresses.erase(FRBAI);
1768 if (!ForwardRefVals.empty())
1769 return P.Error(ForwardRefVals.begin()->second.second,
1770 "use of undefined value '%" + ForwardRefVals.begin()->first +
1772 if (!ForwardRefValIDs.empty())
1773 return P.Error(ForwardRefValIDs.begin()->second.second,
1774 "use of undefined value '%" +
1775 Twine(ForwardRefValIDs.begin()->first) + "'");
1780 /// GetVal - Get a value with the specified name or ID, creating a
1781 /// forward reference record if needed. This can return null if the value
1782 /// exists but does not have the right type.
1783 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1784 Type *Ty, LocTy Loc) {
1785 // Look this name up in the normal function symbol table.
1786 Value *Val = F.getValueSymbolTable().lookup(Name);
1788 // If this is a forward reference for the value, see if we already created a
1789 // forward ref record.
1791 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1792 I = ForwardRefVals.find(Name);
1793 if (I != ForwardRefVals.end())
1794 Val = I->second.first;
1797 // If we have the value in the symbol table or fwd-ref table, return it.
1799 if (Val->getType() == Ty) return Val;
1800 if (Ty->isLabelTy())
1801 P.Error(Loc, "'%" + Name + "' is not a basic block");
1803 P.Error(Loc, "'%" + Name + "' defined with type '" +
1804 getTypeString(Val->getType()) + "'");
1808 // Don't make placeholders with invalid type.
1809 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
1810 P.Error(Loc, "invalid use of a non-first-class type");
1814 // Otherwise, create a new forward reference for this value and remember it.
1816 if (Ty->isLabelTy())
1817 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1819 FwdVal = new Argument(Ty, Name);
1821 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1825 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
1827 // Look this name up in the normal function symbol table.
1828 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1830 // If this is a forward reference for the value, see if we already created a
1831 // forward ref record.
1833 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1834 I = ForwardRefValIDs.find(ID);
1835 if (I != ForwardRefValIDs.end())
1836 Val = I->second.first;
1839 // If we have the value in the symbol table or fwd-ref table, return it.
1841 if (Val->getType() == Ty) return Val;
1842 if (Ty->isLabelTy())
1843 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
1845 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
1846 getTypeString(Val->getType()) + "'");
1850 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
1851 P.Error(Loc, "invalid use of a non-first-class type");
1855 // Otherwise, create a new forward reference for this value and remember it.
1857 if (Ty->isLabelTy())
1858 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1860 FwdVal = new Argument(Ty);
1862 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1866 /// SetInstName - After an instruction is parsed and inserted into its
1867 /// basic block, this installs its name.
1868 bool LLParser::PerFunctionState::SetInstName(int NameID,
1869 const std::string &NameStr,
1870 LocTy NameLoc, Instruction *Inst) {
1871 // If this instruction has void type, it cannot have a name or ID specified.
1872 if (Inst->getType()->isVoidTy()) {
1873 if (NameID != -1 || !NameStr.empty())
1874 return P.Error(NameLoc, "instructions returning void cannot have a name");
1878 // If this was a numbered instruction, verify that the instruction is the
1879 // expected value and resolve any forward references.
1880 if (NameStr.empty()) {
1881 // If neither a name nor an ID was specified, just use the next ID.
1883 NameID = NumberedVals.size();
1885 if (unsigned(NameID) != NumberedVals.size())
1886 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1887 Twine(NumberedVals.size()) + "'");
1889 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1890 ForwardRefValIDs.find(NameID);
1891 if (FI != ForwardRefValIDs.end()) {
1892 if (FI->second.first->getType() != Inst->getType())
1893 return P.Error(NameLoc, "instruction forward referenced with type '" +
1894 getTypeString(FI->second.first->getType()) + "'");
1895 FI->second.first->replaceAllUsesWith(Inst);
1896 delete FI->second.first;
1897 ForwardRefValIDs.erase(FI);
1900 NumberedVals.push_back(Inst);
1904 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1905 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1906 FI = ForwardRefVals.find(NameStr);
1907 if (FI != ForwardRefVals.end()) {
1908 if (FI->second.first->getType() != Inst->getType())
1909 return P.Error(NameLoc, "instruction forward referenced with type '" +
1910 getTypeString(FI->second.first->getType()) + "'");
1911 FI->second.first->replaceAllUsesWith(Inst);
1912 delete FI->second.first;
1913 ForwardRefVals.erase(FI);
1916 // Set the name on the instruction.
1917 Inst->setName(NameStr);
1919 if (Inst->getName() != NameStr)
1920 return P.Error(NameLoc, "multiple definition of local value named '" +
1925 /// GetBB - Get a basic block with the specified name or ID, creating a
1926 /// forward reference record if needed.
1927 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1929 return cast_or_null<BasicBlock>(GetVal(Name,
1930 Type::getLabelTy(F.getContext()), Loc));
1933 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1934 return cast_or_null<BasicBlock>(GetVal(ID,
1935 Type::getLabelTy(F.getContext()), Loc));
1938 /// DefineBB - Define the specified basic block, which is either named or
1939 /// unnamed. If there is an error, this returns null otherwise it returns
1940 /// the block being defined.
1941 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1945 BB = GetBB(NumberedVals.size(), Loc);
1947 BB = GetBB(Name, Loc);
1948 if (BB == 0) return 0; // Already diagnosed error.
1950 // Move the block to the end of the function. Forward ref'd blocks are
1951 // inserted wherever they happen to be referenced.
1952 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1954 // Remove the block from forward ref sets.
1956 ForwardRefValIDs.erase(NumberedVals.size());
1957 NumberedVals.push_back(BB);
1959 // BB forward references are already in the function symbol table.
1960 ForwardRefVals.erase(Name);
1966 //===----------------------------------------------------------------------===//
1968 //===----------------------------------------------------------------------===//
1970 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1971 /// type implied. For example, if we parse "4" we don't know what integer type
1972 /// it has. The value will later be combined with its type and checked for
1973 /// sanity. PFS is used to convert function-local operands of metadata (since
1974 /// metadata operands are not just parsed here but also converted to values).
1975 /// PFS can be null when we are not parsing metadata values inside a function.
1976 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
1977 ID.Loc = Lex.getLoc();
1978 switch (Lex.getKind()) {
1979 default: return TokError("expected value token");
1980 case lltok::GlobalID: // @42
1981 ID.UIntVal = Lex.getUIntVal();
1982 ID.Kind = ValID::t_GlobalID;
1984 case lltok::GlobalVar: // @foo
1985 ID.StrVal = Lex.getStrVal();
1986 ID.Kind = ValID::t_GlobalName;
1988 case lltok::LocalVarID: // %42
1989 ID.UIntVal = Lex.getUIntVal();
1990 ID.Kind = ValID::t_LocalID;
1992 case lltok::LocalVar: // %foo
1993 ID.StrVal = Lex.getStrVal();
1994 ID.Kind = ValID::t_LocalName;
1996 case lltok::exclaim: // !42, !{...}, or !"foo"
1997 return ParseMetadataValue(ID, PFS);
1999 ID.APSIntVal = Lex.getAPSIntVal();
2000 ID.Kind = ValID::t_APSInt;
2002 case lltok::APFloat:
2003 ID.APFloatVal = Lex.getAPFloatVal();
2004 ID.Kind = ValID::t_APFloat;
2006 case lltok::kw_true:
2007 ID.ConstantVal = ConstantInt::getTrue(Context);
2008 ID.Kind = ValID::t_Constant;
2010 case lltok::kw_false:
2011 ID.ConstantVal = ConstantInt::getFalse(Context);
2012 ID.Kind = ValID::t_Constant;
2014 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2015 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2016 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2018 case lltok::lbrace: {
2019 // ValID ::= '{' ConstVector '}'
2021 SmallVector<Constant*, 16> Elts;
2022 if (ParseGlobalValueVector(Elts) ||
2023 ParseToken(lltok::rbrace, "expected end of struct constant"))
2026 ID.ConstantStructElts = new Constant*[Elts.size()];
2027 ID.UIntVal = Elts.size();
2028 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2029 ID.Kind = ValID::t_ConstantStruct;
2033 // ValID ::= '<' ConstVector '>' --> Vector.
2034 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2036 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2038 SmallVector<Constant*, 16> Elts;
2039 LocTy FirstEltLoc = Lex.getLoc();
2040 if (ParseGlobalValueVector(Elts) ||
2042 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2043 ParseToken(lltok::greater, "expected end of constant"))
2046 if (isPackedStruct) {
2047 ID.ConstantStructElts = new Constant*[Elts.size()];
2048 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2049 ID.UIntVal = Elts.size();
2050 ID.Kind = ValID::t_PackedConstantStruct;
2055 return Error(ID.Loc, "constant vector must not be empty");
2057 if (!Elts[0]->getType()->isIntegerTy() &&
2058 !Elts[0]->getType()->isFloatingPointTy() &&
2059 !Elts[0]->getType()->isPointerTy())
2060 return Error(FirstEltLoc,
2061 "vector elements must have integer, pointer or floating point type");
2063 // Verify that all the vector elements have the same type.
2064 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2065 if (Elts[i]->getType() != Elts[0]->getType())
2066 return Error(FirstEltLoc,
2067 "vector element #" + Twine(i) +
2068 " is not of type '" + getTypeString(Elts[0]->getType()));
2070 ID.ConstantVal = ConstantVector::get(Elts);
2071 ID.Kind = ValID::t_Constant;
2074 case lltok::lsquare: { // Array Constant
2076 SmallVector<Constant*, 16> Elts;
2077 LocTy FirstEltLoc = Lex.getLoc();
2078 if (ParseGlobalValueVector(Elts) ||
2079 ParseToken(lltok::rsquare, "expected end of array constant"))
2082 // Handle empty element.
2084 // Use undef instead of an array because it's inconvenient to determine
2085 // the element type at this point, there being no elements to examine.
2086 ID.Kind = ValID::t_EmptyArray;
2090 if (!Elts[0]->getType()->isFirstClassType())
2091 return Error(FirstEltLoc, "invalid array element type: " +
2092 getTypeString(Elts[0]->getType()));
2094 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2096 // Verify all elements are correct type!
2097 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2098 if (Elts[i]->getType() != Elts[0]->getType())
2099 return Error(FirstEltLoc,
2100 "array element #" + Twine(i) +
2101 " is not of type '" + getTypeString(Elts[0]->getType()));
2104 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2105 ID.Kind = ValID::t_Constant;
2108 case lltok::kw_c: // c "foo"
2110 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2112 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2113 ID.Kind = ValID::t_Constant;
2116 case lltok::kw_asm: {
2117 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2118 bool HasSideEffect, AlignStack, AsmDialect;
2120 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2121 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2122 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2123 ParseStringConstant(ID.StrVal) ||
2124 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2125 ParseToken(lltok::StringConstant, "expected constraint string"))
2127 ID.StrVal2 = Lex.getStrVal();
2128 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2129 (unsigned(AsmDialect)<<2);
2130 ID.Kind = ValID::t_InlineAsm;
2134 case lltok::kw_blockaddress: {
2135 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2139 LocTy FnLoc, LabelLoc;
2141 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2143 ParseToken(lltok::comma, "expected comma in block address expression")||
2144 ParseValID(Label) ||
2145 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2148 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2149 return Error(Fn.Loc, "expected function name in blockaddress");
2150 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2151 return Error(Label.Loc, "expected basic block name in blockaddress");
2153 // Make a global variable as a placeholder for this reference.
2154 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2155 false, GlobalValue::InternalLinkage,
2157 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2158 ID.ConstantVal = FwdRef;
2159 ID.Kind = ValID::t_Constant;
2163 case lltok::kw_trunc:
2164 case lltok::kw_zext:
2165 case lltok::kw_sext:
2166 case lltok::kw_fptrunc:
2167 case lltok::kw_fpext:
2168 case lltok::kw_bitcast:
2169 case lltok::kw_uitofp:
2170 case lltok::kw_sitofp:
2171 case lltok::kw_fptoui:
2172 case lltok::kw_fptosi:
2173 case lltok::kw_inttoptr:
2174 case lltok::kw_ptrtoint: {
2175 unsigned Opc = Lex.getUIntVal();
2179 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2180 ParseGlobalTypeAndValue(SrcVal) ||
2181 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2182 ParseType(DestTy) ||
2183 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2185 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2186 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2187 getTypeString(SrcVal->getType()) + "' to '" +
2188 getTypeString(DestTy) + "'");
2189 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2191 ID.Kind = ValID::t_Constant;
2194 case lltok::kw_extractvalue: {
2197 SmallVector<unsigned, 4> Indices;
2198 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2199 ParseGlobalTypeAndValue(Val) ||
2200 ParseIndexList(Indices) ||
2201 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2204 if (!Val->getType()->isAggregateType())
2205 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2206 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2207 return Error(ID.Loc, "invalid indices for extractvalue");
2208 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2209 ID.Kind = ValID::t_Constant;
2212 case lltok::kw_insertvalue: {
2214 Constant *Val0, *Val1;
2215 SmallVector<unsigned, 4> Indices;
2216 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2217 ParseGlobalTypeAndValue(Val0) ||
2218 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2219 ParseGlobalTypeAndValue(Val1) ||
2220 ParseIndexList(Indices) ||
2221 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2223 if (!Val0->getType()->isAggregateType())
2224 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2225 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2226 return Error(ID.Loc, "invalid indices for insertvalue");
2227 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2228 ID.Kind = ValID::t_Constant;
2231 case lltok::kw_icmp:
2232 case lltok::kw_fcmp: {
2233 unsigned PredVal, Opc = Lex.getUIntVal();
2234 Constant *Val0, *Val1;
2236 if (ParseCmpPredicate(PredVal, Opc) ||
2237 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2238 ParseGlobalTypeAndValue(Val0) ||
2239 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2240 ParseGlobalTypeAndValue(Val1) ||
2241 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2244 if (Val0->getType() != Val1->getType())
2245 return Error(ID.Loc, "compare operands must have the same type");
2247 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2249 if (Opc == Instruction::FCmp) {
2250 if (!Val0->getType()->isFPOrFPVectorTy())
2251 return Error(ID.Loc, "fcmp requires floating point operands");
2252 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2254 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2255 if (!Val0->getType()->isIntOrIntVectorTy() &&
2256 !Val0->getType()->getScalarType()->isPointerTy())
2257 return Error(ID.Loc, "icmp requires pointer or integer operands");
2258 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2260 ID.Kind = ValID::t_Constant;
2264 // Binary Operators.
2266 case lltok::kw_fadd:
2268 case lltok::kw_fsub:
2270 case lltok::kw_fmul:
2271 case lltok::kw_udiv:
2272 case lltok::kw_sdiv:
2273 case lltok::kw_fdiv:
2274 case lltok::kw_urem:
2275 case lltok::kw_srem:
2276 case lltok::kw_frem:
2278 case lltok::kw_lshr:
2279 case lltok::kw_ashr: {
2283 unsigned Opc = Lex.getUIntVal();
2284 Constant *Val0, *Val1;
2286 LocTy ModifierLoc = Lex.getLoc();
2287 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2288 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2289 if (EatIfPresent(lltok::kw_nuw))
2291 if (EatIfPresent(lltok::kw_nsw)) {
2293 if (EatIfPresent(lltok::kw_nuw))
2296 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2297 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2298 if (EatIfPresent(lltok::kw_exact))
2301 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2302 ParseGlobalTypeAndValue(Val0) ||
2303 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2304 ParseGlobalTypeAndValue(Val1) ||
2305 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2307 if (Val0->getType() != Val1->getType())
2308 return Error(ID.Loc, "operands of constexpr must have same type");
2309 if (!Val0->getType()->isIntOrIntVectorTy()) {
2311 return Error(ModifierLoc, "nuw only applies to integer operations");
2313 return Error(ModifierLoc, "nsw only applies to integer operations");
2315 // Check that the type is valid for the operator.
2317 case Instruction::Add:
2318 case Instruction::Sub:
2319 case Instruction::Mul:
2320 case Instruction::UDiv:
2321 case Instruction::SDiv:
2322 case Instruction::URem:
2323 case Instruction::SRem:
2324 case Instruction::Shl:
2325 case Instruction::AShr:
2326 case Instruction::LShr:
2327 if (!Val0->getType()->isIntOrIntVectorTy())
2328 return Error(ID.Loc, "constexpr requires integer operands");
2330 case Instruction::FAdd:
2331 case Instruction::FSub:
2332 case Instruction::FMul:
2333 case Instruction::FDiv:
2334 case Instruction::FRem:
2335 if (!Val0->getType()->isFPOrFPVectorTy())
2336 return Error(ID.Loc, "constexpr requires fp operands");
2338 default: llvm_unreachable("Unknown binary operator!");
2341 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2342 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2343 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2344 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2346 ID.Kind = ValID::t_Constant;
2350 // Logical Operations
2353 case lltok::kw_xor: {
2354 unsigned Opc = Lex.getUIntVal();
2355 Constant *Val0, *Val1;
2357 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2358 ParseGlobalTypeAndValue(Val0) ||
2359 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2360 ParseGlobalTypeAndValue(Val1) ||
2361 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2363 if (Val0->getType() != Val1->getType())
2364 return Error(ID.Loc, "operands of constexpr must have same type");
2365 if (!Val0->getType()->isIntOrIntVectorTy())
2366 return Error(ID.Loc,
2367 "constexpr requires integer or integer vector operands");
2368 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2369 ID.Kind = ValID::t_Constant;
2373 case lltok::kw_getelementptr:
2374 case lltok::kw_shufflevector:
2375 case lltok::kw_insertelement:
2376 case lltok::kw_extractelement:
2377 case lltok::kw_select: {
2378 unsigned Opc = Lex.getUIntVal();
2379 SmallVector<Constant*, 16> Elts;
2380 bool InBounds = false;
2382 if (Opc == Instruction::GetElementPtr)
2383 InBounds = EatIfPresent(lltok::kw_inbounds);
2384 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2385 ParseGlobalValueVector(Elts) ||
2386 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2389 if (Opc == Instruction::GetElementPtr) {
2390 if (Elts.size() == 0 ||
2391 !Elts[0]->getType()->getScalarType()->isPointerTy())
2392 return Error(ID.Loc, "getelementptr requires pointer operand");
2394 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2395 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2396 return Error(ID.Loc, "invalid indices for getelementptr");
2397 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2399 } else if (Opc == Instruction::Select) {
2400 if (Elts.size() != 3)
2401 return Error(ID.Loc, "expected three operands to select");
2402 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2404 return Error(ID.Loc, Reason);
2405 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2406 } else if (Opc == Instruction::ShuffleVector) {
2407 if (Elts.size() != 3)
2408 return Error(ID.Loc, "expected three operands to shufflevector");
2409 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2410 return Error(ID.Loc, "invalid operands to shufflevector");
2412 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2413 } else if (Opc == Instruction::ExtractElement) {
2414 if (Elts.size() != 2)
2415 return Error(ID.Loc, "expected two operands to extractelement");
2416 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2417 return Error(ID.Loc, "invalid extractelement operands");
2418 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2420 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2421 if (Elts.size() != 3)
2422 return Error(ID.Loc, "expected three operands to insertelement");
2423 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2424 return Error(ID.Loc, "invalid insertelement operands");
2426 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2429 ID.Kind = ValID::t_Constant;
2438 /// ParseGlobalValue - Parse a global value with the specified type.
2439 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2443 bool Parsed = ParseValID(ID) ||
2444 ConvertValIDToValue(Ty, ID, V, NULL);
2445 if (V && !(C = dyn_cast<Constant>(V)))
2446 return Error(ID.Loc, "global values must be constants");
2450 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2452 return ParseType(Ty) ||
2453 ParseGlobalValue(Ty, V);
2456 /// ParseGlobalValueVector
2458 /// ::= TypeAndValue (',' TypeAndValue)*
2459 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2461 if (Lex.getKind() == lltok::rbrace ||
2462 Lex.getKind() == lltok::rsquare ||
2463 Lex.getKind() == lltok::greater ||
2464 Lex.getKind() == lltok::rparen)
2468 if (ParseGlobalTypeAndValue(C)) return true;
2471 while (EatIfPresent(lltok::comma)) {
2472 if (ParseGlobalTypeAndValue(C)) return true;
2479 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2480 assert(Lex.getKind() == lltok::lbrace);
2483 SmallVector<Value*, 16> Elts;
2484 if (ParseMDNodeVector(Elts, PFS) ||
2485 ParseToken(lltok::rbrace, "expected end of metadata node"))
2488 ID.MDNodeVal = MDNode::get(Context, Elts);
2489 ID.Kind = ValID::t_MDNode;
2493 /// ParseMetadataValue
2497 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2498 assert(Lex.getKind() == lltok::exclaim);
2503 if (Lex.getKind() == lltok::lbrace)
2504 return ParseMetadataListValue(ID, PFS);
2506 // Standalone metadata reference
2508 if (Lex.getKind() == lltok::APSInt) {
2509 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2510 ID.Kind = ValID::t_MDNode;
2515 // ::= '!' STRINGCONSTANT
2516 if (ParseMDString(ID.MDStringVal)) return true;
2517 ID.Kind = ValID::t_MDString;
2522 //===----------------------------------------------------------------------===//
2523 // Function Parsing.
2524 //===----------------------------------------------------------------------===//
2526 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2527 PerFunctionState *PFS) {
2528 if (Ty->isFunctionTy())
2529 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2532 case ValID::t_LocalID:
2533 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2534 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2536 case ValID::t_LocalName:
2537 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2538 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2540 case ValID::t_InlineAsm: {
2541 PointerType *PTy = dyn_cast<PointerType>(Ty);
2543 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2544 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2545 return Error(ID.Loc, "invalid type for inline asm constraint string");
2546 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
2547 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
2550 case ValID::t_MDNode:
2551 if (!Ty->isMetadataTy())
2552 return Error(ID.Loc, "metadata value must have metadata type");
2555 case ValID::t_MDString:
2556 if (!Ty->isMetadataTy())
2557 return Error(ID.Loc, "metadata value must have metadata type");
2560 case ValID::t_GlobalName:
2561 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2563 case ValID::t_GlobalID:
2564 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2566 case ValID::t_APSInt:
2567 if (!Ty->isIntegerTy())
2568 return Error(ID.Loc, "integer constant must have integer type");
2569 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2570 V = ConstantInt::get(Context, ID.APSIntVal);
2572 case ValID::t_APFloat:
2573 if (!Ty->isFloatingPointTy() ||
2574 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2575 return Error(ID.Loc, "floating point constant invalid for type");
2577 // The lexer has no type info, so builds all half, float, and double FP
2578 // constants as double. Fix this here. Long double does not need this.
2579 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
2582 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
2584 else if (Ty->isFloatTy())
2585 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2588 V = ConstantFP::get(Context, ID.APFloatVal);
2590 if (V->getType() != Ty)
2591 return Error(ID.Loc, "floating point constant does not have type '" +
2592 getTypeString(Ty) + "'");
2596 if (!Ty->isPointerTy())
2597 return Error(ID.Loc, "null must be a pointer type");
2598 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2600 case ValID::t_Undef:
2601 // FIXME: LabelTy should not be a first-class type.
2602 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2603 return Error(ID.Loc, "invalid type for undef constant");
2604 V = UndefValue::get(Ty);
2606 case ValID::t_EmptyArray:
2607 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2608 return Error(ID.Loc, "invalid empty array initializer");
2609 V = UndefValue::get(Ty);
2612 // FIXME: LabelTy should not be a first-class type.
2613 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2614 return Error(ID.Loc, "invalid type for null constant");
2615 V = Constant::getNullValue(Ty);
2617 case ValID::t_Constant:
2618 if (ID.ConstantVal->getType() != Ty)
2619 return Error(ID.Loc, "constant expression type mismatch");
2623 case ValID::t_ConstantStruct:
2624 case ValID::t_PackedConstantStruct:
2625 if (StructType *ST = dyn_cast<StructType>(Ty)) {
2626 if (ST->getNumElements() != ID.UIntVal)
2627 return Error(ID.Loc,
2628 "initializer with struct type has wrong # elements");
2629 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
2630 return Error(ID.Loc, "packed'ness of initializer and type don't match");
2632 // Verify that the elements are compatible with the structtype.
2633 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
2634 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
2635 return Error(ID.Loc, "element " + Twine(i) +
2636 " of struct initializer doesn't match struct element type");
2638 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
2641 return Error(ID.Loc, "constant expression type mismatch");
2644 llvm_unreachable("Invalid ValID");
2647 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
2650 return ParseValID(ID, PFS) ||
2651 ConvertValIDToValue(Ty, ID, V, PFS);
2654 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
2656 return ParseType(Ty) ||
2657 ParseValue(Ty, V, PFS);
2660 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2661 PerFunctionState &PFS) {
2664 if (ParseTypeAndValue(V, PFS)) return true;
2665 if (!isa<BasicBlock>(V))
2666 return Error(Loc, "expected a basic block");
2667 BB = cast<BasicBlock>(V);
2673 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2674 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2675 /// OptionalAlign OptGC
2676 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2677 // Parse the linkage.
2678 LocTy LinkageLoc = Lex.getLoc();
2681 unsigned Visibility;
2682 AttrBuilder RetAttrs;
2685 LocTy RetTypeLoc = Lex.getLoc();
2686 if (ParseOptionalLinkage(Linkage) ||
2687 ParseOptionalVisibility(Visibility) ||
2688 ParseOptionalCallingConv(CC) ||
2689 ParseOptionalAttrs(RetAttrs, 1) ||
2690 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2693 // Verify that the linkage is ok.
2694 switch ((GlobalValue::LinkageTypes)Linkage) {
2695 case GlobalValue::ExternalLinkage:
2696 break; // always ok.
2697 case GlobalValue::DLLImportLinkage:
2698 case GlobalValue::ExternalWeakLinkage:
2700 return Error(LinkageLoc, "invalid linkage for function definition");
2702 case GlobalValue::PrivateLinkage:
2703 case GlobalValue::LinkerPrivateLinkage:
2704 case GlobalValue::LinkerPrivateWeakLinkage:
2705 case GlobalValue::InternalLinkage:
2706 case GlobalValue::AvailableExternallyLinkage:
2707 case GlobalValue::LinkOnceAnyLinkage:
2708 case GlobalValue::LinkOnceODRLinkage:
2709 case GlobalValue::LinkOnceODRAutoHideLinkage:
2710 case GlobalValue::WeakAnyLinkage:
2711 case GlobalValue::WeakODRLinkage:
2712 case GlobalValue::DLLExportLinkage:
2714 return Error(LinkageLoc, "invalid linkage for function declaration");
2716 case GlobalValue::AppendingLinkage:
2717 case GlobalValue::CommonLinkage:
2718 return Error(LinkageLoc, "invalid function linkage type");
2721 if (!FunctionType::isValidReturnType(RetType))
2722 return Error(RetTypeLoc, "invalid function return type");
2724 LocTy NameLoc = Lex.getLoc();
2726 std::string FunctionName;
2727 if (Lex.getKind() == lltok::GlobalVar) {
2728 FunctionName = Lex.getStrVal();
2729 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2730 unsigned NameID = Lex.getUIntVal();
2732 if (NameID != NumberedVals.size())
2733 return TokError("function expected to be numbered '%" +
2734 Twine(NumberedVals.size()) + "'");
2736 return TokError("expected function name");
2741 if (Lex.getKind() != lltok::lparen)
2742 return TokError("expected '(' in function argument list");
2744 SmallVector<ArgInfo, 8> ArgList;
2746 AttrBuilder FuncAttrs;
2747 std::string Section;
2751 LocTy UnnamedAddrLoc;
2753 if (ParseArgumentList(ArgList, isVarArg) ||
2754 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
2756 ParseOptionalAttrs(FuncAttrs, 2) ||
2757 (EatIfPresent(lltok::kw_section) &&
2758 ParseStringConstant(Section)) ||
2759 ParseOptionalAlignment(Alignment) ||
2760 (EatIfPresent(lltok::kw_gc) &&
2761 ParseStringConstant(GC)))
2764 // If the alignment was parsed as an attribute, move to the alignment field.
2765 if (FuncAttrs.hasAlignmentAttr()) {
2766 Alignment = FuncAttrs.getAlignment();
2767 FuncAttrs.removeAttribute(Attributes::Alignment);
2770 // Okay, if we got here, the function is syntactically valid. Convert types
2771 // and do semantic checks.
2772 std::vector<Type*> ParamTypeList;
2773 SmallVector<AttributeWithIndex, 8> Attrs;
2775 if (RetAttrs.hasAttributes())
2777 AttributeWithIndex::get(AttrListPtr::ReturnIndex,
2778 Attributes::get(RetType->getContext(),
2781 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2782 ParamTypeList.push_back(ArgList[i].Ty);
2783 if (ArgList[i].Attrs.hasAttributes())
2784 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2787 if (FuncAttrs.hasAttributes())
2789 AttributeWithIndex::get(AttrListPtr::FunctionIndex,
2790 Attributes::get(RetType->getContext(),
2793 AttrListPtr PAL = AttrListPtr::get(Context, Attrs);
2795 if (PAL.getParamAttributes(1).hasAttribute(Attributes::StructRet) &&
2796 !RetType->isVoidTy())
2797 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2800 FunctionType::get(RetType, ParamTypeList, isVarArg);
2801 PointerType *PFT = PointerType::getUnqual(FT);
2804 if (!FunctionName.empty()) {
2805 // If this was a definition of a forward reference, remove the definition
2806 // from the forward reference table and fill in the forward ref.
2807 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2808 ForwardRefVals.find(FunctionName);
2809 if (FRVI != ForwardRefVals.end()) {
2810 Fn = M->getFunction(FunctionName);
2812 return Error(FRVI->second.second, "invalid forward reference to "
2813 "function as global value!");
2814 if (Fn->getType() != PFT)
2815 return Error(FRVI->second.second, "invalid forward reference to "
2816 "function '" + FunctionName + "' with wrong type!");
2818 ForwardRefVals.erase(FRVI);
2819 } else if ((Fn = M->getFunction(FunctionName))) {
2820 // Reject redefinitions.
2821 return Error(NameLoc, "invalid redefinition of function '" +
2822 FunctionName + "'");
2823 } else if (M->getNamedValue(FunctionName)) {
2824 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2828 // If this is a definition of a forward referenced function, make sure the
2830 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2831 = ForwardRefValIDs.find(NumberedVals.size());
2832 if (I != ForwardRefValIDs.end()) {
2833 Fn = cast<Function>(I->second.first);
2834 if (Fn->getType() != PFT)
2835 return Error(NameLoc, "type of definition and forward reference of '@" +
2836 Twine(NumberedVals.size()) + "' disagree");
2837 ForwardRefValIDs.erase(I);
2842 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2843 else // Move the forward-reference to the correct spot in the module.
2844 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2846 if (FunctionName.empty())
2847 NumberedVals.push_back(Fn);
2849 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2850 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2851 Fn->setCallingConv(CC);
2852 Fn->setAttributes(PAL);
2853 Fn->setUnnamedAddr(UnnamedAddr);
2854 Fn->setAlignment(Alignment);
2855 Fn->setSection(Section);
2856 if (!GC.empty()) Fn->setGC(GC.c_str());
2858 // Add all of the arguments we parsed to the function.
2859 Function::arg_iterator ArgIt = Fn->arg_begin();
2860 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2861 // If the argument has a name, insert it into the argument symbol table.
2862 if (ArgList[i].Name.empty()) continue;
2864 // Set the name, if it conflicted, it will be auto-renamed.
2865 ArgIt->setName(ArgList[i].Name);
2867 if (ArgIt->getName() != ArgList[i].Name)
2868 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2869 ArgList[i].Name + "'");
2876 /// ParseFunctionBody
2877 /// ::= '{' BasicBlock+ '}'
2879 bool LLParser::ParseFunctionBody(Function &Fn) {
2880 if (Lex.getKind() != lltok::lbrace)
2881 return TokError("expected '{' in function body");
2882 Lex.Lex(); // eat the {.
2884 int FunctionNumber = -1;
2885 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2887 PerFunctionState PFS(*this, Fn, FunctionNumber);
2889 // We need at least one basic block.
2890 if (Lex.getKind() == lltok::rbrace)
2891 return TokError("function body requires at least one basic block");
2893 while (Lex.getKind() != lltok::rbrace)
2894 if (ParseBasicBlock(PFS)) return true;
2899 // Verify function is ok.
2900 return PFS.FinishFunction();
2904 /// ::= LabelStr? Instruction*
2905 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2906 // If this basic block starts out with a name, remember it.
2908 LocTy NameLoc = Lex.getLoc();
2909 if (Lex.getKind() == lltok::LabelStr) {
2910 Name = Lex.getStrVal();
2914 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2915 if (BB == 0) return true;
2917 std::string NameStr;
2919 // Parse the instructions in this block until we get a terminator.
2921 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2923 // This instruction may have three possibilities for a name: a) none
2924 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2925 LocTy NameLoc = Lex.getLoc();
2929 if (Lex.getKind() == lltok::LocalVarID) {
2930 NameID = Lex.getUIntVal();
2932 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2934 } else if (Lex.getKind() == lltok::LocalVar) {
2935 NameStr = Lex.getStrVal();
2937 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2941 switch (ParseInstruction(Inst, BB, PFS)) {
2942 default: llvm_unreachable("Unknown ParseInstruction result!");
2943 case InstError: return true;
2945 BB->getInstList().push_back(Inst);
2947 // With a normal result, we check to see if the instruction is followed by
2948 // a comma and metadata.
2949 if (EatIfPresent(lltok::comma))
2950 if (ParseInstructionMetadata(Inst, &PFS))
2953 case InstExtraComma:
2954 BB->getInstList().push_back(Inst);
2956 // If the instruction parser ate an extra comma at the end of it, it
2957 // *must* be followed by metadata.
2958 if (ParseInstructionMetadata(Inst, &PFS))
2963 // Set the name on the instruction.
2964 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2965 } while (!isa<TerminatorInst>(Inst));
2970 //===----------------------------------------------------------------------===//
2971 // Instruction Parsing.
2972 //===----------------------------------------------------------------------===//
2974 /// ParseInstruction - Parse one of the many different instructions.
2976 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2977 PerFunctionState &PFS) {
2978 lltok::Kind Token = Lex.getKind();
2979 if (Token == lltok::Eof)
2980 return TokError("found end of file when expecting more instructions");
2981 LocTy Loc = Lex.getLoc();
2982 unsigned KeywordVal = Lex.getUIntVal();
2983 Lex.Lex(); // Eat the keyword.
2986 default: return Error(Loc, "expected instruction opcode");
2987 // Terminator Instructions.
2988 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
2989 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
2990 case lltok::kw_br: return ParseBr(Inst, PFS);
2991 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
2992 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
2993 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
2994 case lltok::kw_resume: return ParseResume(Inst, PFS);
2995 // Binary Operators.
2999 case lltok::kw_shl: {
3000 bool NUW = EatIfPresent(lltok::kw_nuw);
3001 bool NSW = EatIfPresent(lltok::kw_nsw);
3002 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3004 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3006 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3007 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3010 case lltok::kw_fadd:
3011 case lltok::kw_fsub:
3012 case lltok::kw_fmul:
3013 case lltok::kw_fdiv:
3014 case lltok::kw_frem: {
3015 FastMathFlags FMF = EatFastMathFlagsIfPresent();
3016 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
3020 Inst->setFastMathFlags(FMF);
3024 case lltok::kw_sdiv:
3025 case lltok::kw_udiv:
3026 case lltok::kw_lshr:
3027 case lltok::kw_ashr: {
3028 bool Exact = EatIfPresent(lltok::kw_exact);
3030 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3031 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3035 case lltok::kw_urem:
3036 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3039 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3040 case lltok::kw_icmp:
3041 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3043 case lltok::kw_trunc:
3044 case lltok::kw_zext:
3045 case lltok::kw_sext:
3046 case lltok::kw_fptrunc:
3047 case lltok::kw_fpext:
3048 case lltok::kw_bitcast:
3049 case lltok::kw_uitofp:
3050 case lltok::kw_sitofp:
3051 case lltok::kw_fptoui:
3052 case lltok::kw_fptosi:
3053 case lltok::kw_inttoptr:
3054 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3056 case lltok::kw_select: return ParseSelect(Inst, PFS);
3057 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3058 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3059 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3060 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3061 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3062 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3063 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3064 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3066 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3067 case lltok::kw_load: return ParseLoad(Inst, PFS);
3068 case lltok::kw_store: return ParseStore(Inst, PFS);
3069 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3070 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3071 case lltok::kw_fence: return ParseFence(Inst, PFS);
3072 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3073 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3074 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3078 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3079 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3080 if (Opc == Instruction::FCmp) {
3081 switch (Lex.getKind()) {
3082 default: TokError("expected fcmp predicate (e.g. 'oeq')");
3083 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3084 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3085 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3086 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3087 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3088 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3089 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3090 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3091 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3092 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3093 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3094 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3095 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3096 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3097 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3098 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3101 switch (Lex.getKind()) {
3102 default: TokError("expected icmp predicate (e.g. 'eq')");
3103 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3104 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3105 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3106 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3107 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3108 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3109 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3110 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3111 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3112 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3119 //===----------------------------------------------------------------------===//
3120 // Terminator Instructions.
3121 //===----------------------------------------------------------------------===//
3123 /// ParseRet - Parse a return instruction.
3124 /// ::= 'ret' void (',' !dbg, !1)*
3125 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3126 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3127 PerFunctionState &PFS) {
3128 SMLoc TypeLoc = Lex.getLoc();
3130 if (ParseType(Ty, true /*void allowed*/)) return true;
3132 Type *ResType = PFS.getFunction().getReturnType();
3134 if (Ty->isVoidTy()) {
3135 if (!ResType->isVoidTy())
3136 return Error(TypeLoc, "value doesn't match function result type '" +
3137 getTypeString(ResType) + "'");
3139 Inst = ReturnInst::Create(Context);
3144 if (ParseValue(Ty, RV, PFS)) return true;
3146 if (ResType != RV->getType())
3147 return Error(TypeLoc, "value doesn't match function result type '" +
3148 getTypeString(ResType) + "'");
3150 Inst = ReturnInst::Create(Context, RV);
3156 /// ::= 'br' TypeAndValue
3157 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3158 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3161 BasicBlock *Op1, *Op2;
3162 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3164 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3165 Inst = BranchInst::Create(BB);
3169 if (Op0->getType() != Type::getInt1Ty(Context))
3170 return Error(Loc, "branch condition must have 'i1' type");
3172 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3173 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3174 ParseToken(lltok::comma, "expected ',' after true destination") ||
3175 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3178 Inst = BranchInst::Create(Op1, Op2, Op0);
3184 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3186 /// ::= (TypeAndValue ',' TypeAndValue)*
3187 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3188 LocTy CondLoc, BBLoc;
3190 BasicBlock *DefaultBB;
3191 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3192 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3193 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3194 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3197 if (!Cond->getType()->isIntegerTy())
3198 return Error(CondLoc, "switch condition must have integer type");
3200 // Parse the jump table pairs.
3201 SmallPtrSet<Value*, 32> SeenCases;
3202 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3203 while (Lex.getKind() != lltok::rsquare) {
3207 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3208 ParseToken(lltok::comma, "expected ',' after case value") ||
3209 ParseTypeAndBasicBlock(DestBB, PFS))
3212 if (!SeenCases.insert(Constant))
3213 return Error(CondLoc, "duplicate case value in switch");
3214 if (!isa<ConstantInt>(Constant))
3215 return Error(CondLoc, "case value is not a constant integer");
3217 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3220 Lex.Lex(); // Eat the ']'.
3222 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3223 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3224 SI->addCase(Table[i].first, Table[i].second);
3231 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3232 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3235 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3236 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3237 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3240 if (!Address->getType()->isPointerTy())
3241 return Error(AddrLoc, "indirectbr address must have pointer type");
3243 // Parse the destination list.
3244 SmallVector<BasicBlock*, 16> DestList;
3246 if (Lex.getKind() != lltok::rsquare) {
3248 if (ParseTypeAndBasicBlock(DestBB, PFS))
3250 DestList.push_back(DestBB);
3252 while (EatIfPresent(lltok::comma)) {
3253 if (ParseTypeAndBasicBlock(DestBB, PFS))
3255 DestList.push_back(DestBB);
3259 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3262 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3263 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3264 IBI->addDestination(DestList[i]);
3271 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3272 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3273 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3274 LocTy CallLoc = Lex.getLoc();
3275 AttrBuilder RetAttrs, FnAttrs;
3280 SmallVector<ParamInfo, 16> ArgList;
3282 BasicBlock *NormalBB, *UnwindBB;
3283 if (ParseOptionalCallingConv(CC) ||
3284 ParseOptionalAttrs(RetAttrs, 1) ||
3285 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3286 ParseValID(CalleeID) ||
3287 ParseParameterList(ArgList, PFS) ||
3288 ParseOptionalAttrs(FnAttrs, 2) ||
3289 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3290 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3291 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3292 ParseTypeAndBasicBlock(UnwindBB, PFS))
3295 // If RetType is a non-function pointer type, then this is the short syntax
3296 // for the call, which means that RetType is just the return type. Infer the
3297 // rest of the function argument types from the arguments that are present.
3298 PointerType *PFTy = 0;
3299 FunctionType *Ty = 0;
3300 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3301 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3302 // Pull out the types of all of the arguments...
3303 std::vector<Type*> ParamTypes;
3304 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3305 ParamTypes.push_back(ArgList[i].V->getType());
3307 if (!FunctionType::isValidReturnType(RetType))
3308 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3310 Ty = FunctionType::get(RetType, ParamTypes, false);
3311 PFTy = PointerType::getUnqual(Ty);
3314 // Look up the callee.
3316 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3318 // Set up the Attributes for the function.
3319 SmallVector<AttributeWithIndex, 8> Attrs;
3320 if (RetAttrs.hasAttributes())
3322 AttributeWithIndex::get(AttrListPtr::ReturnIndex,
3323 Attributes::get(Callee->getContext(),
3326 SmallVector<Value*, 8> Args;
3328 // Loop through FunctionType's arguments and ensure they are specified
3329 // correctly. Also, gather any parameter attributes.
3330 FunctionType::param_iterator I = Ty->param_begin();
3331 FunctionType::param_iterator E = Ty->param_end();
3332 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3333 Type *ExpectedTy = 0;
3336 } else if (!Ty->isVarArg()) {
3337 return Error(ArgList[i].Loc, "too many arguments specified");
3340 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3341 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3342 getTypeString(ExpectedTy) + "'");
3343 Args.push_back(ArgList[i].V);
3344 if (ArgList[i].Attrs.hasAttributes())
3345 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3349 return Error(CallLoc, "not enough parameters specified for call");
3351 if (FnAttrs.hasAttributes())
3353 AttributeWithIndex::get(AttrListPtr::FunctionIndex,
3354 Attributes::get(Callee->getContext(),
3357 // Finish off the Attributes and check them
3358 AttrListPtr PAL = AttrListPtr::get(Context, Attrs);
3360 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3361 II->setCallingConv(CC);
3362 II->setAttributes(PAL);
3368 /// ::= 'resume' TypeAndValue
3369 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3370 Value *Exn; LocTy ExnLoc;
3371 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3374 ResumeInst *RI = ResumeInst::Create(Exn);
3379 //===----------------------------------------------------------------------===//
3380 // Binary Operators.
3381 //===----------------------------------------------------------------------===//
3384 /// ::= ArithmeticOps TypeAndValue ',' Value
3386 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3387 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3388 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3389 unsigned Opc, unsigned OperandType) {
3390 LocTy Loc; Value *LHS, *RHS;
3391 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3392 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3393 ParseValue(LHS->getType(), RHS, PFS))
3397 switch (OperandType) {
3398 default: llvm_unreachable("Unknown operand type!");
3399 case 0: // int or FP.
3400 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3401 LHS->getType()->isFPOrFPVectorTy();
3403 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3404 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3408 return Error(Loc, "invalid operand type for instruction");
3410 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3415 /// ::= ArithmeticOps TypeAndValue ',' Value {
3416 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3418 LocTy Loc; Value *LHS, *RHS;
3419 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3420 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3421 ParseValue(LHS->getType(), RHS, PFS))
3424 if (!LHS->getType()->isIntOrIntVectorTy())
3425 return Error(Loc,"instruction requires integer or integer vector operands");
3427 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3433 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3434 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3435 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3437 // Parse the integer/fp comparison predicate.
3441 if (ParseCmpPredicate(Pred, Opc) ||
3442 ParseTypeAndValue(LHS, Loc, PFS) ||
3443 ParseToken(lltok::comma, "expected ',' after compare value") ||
3444 ParseValue(LHS->getType(), RHS, PFS))
3447 if (Opc == Instruction::FCmp) {
3448 if (!LHS->getType()->isFPOrFPVectorTy())
3449 return Error(Loc, "fcmp requires floating point operands");
3450 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3452 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3453 if (!LHS->getType()->isIntOrIntVectorTy() &&
3454 !LHS->getType()->getScalarType()->isPointerTy())
3455 return Error(Loc, "icmp requires integer operands");
3456 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3461 //===----------------------------------------------------------------------===//
3462 // Other Instructions.
3463 //===----------------------------------------------------------------------===//
3467 /// ::= CastOpc TypeAndValue 'to' Type
3468 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3473 if (ParseTypeAndValue(Op, Loc, PFS) ||
3474 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3478 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3479 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3480 return Error(Loc, "invalid cast opcode for cast from '" +
3481 getTypeString(Op->getType()) + "' to '" +
3482 getTypeString(DestTy) + "'");
3484 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3489 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3490 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3492 Value *Op0, *Op1, *Op2;
3493 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3494 ParseToken(lltok::comma, "expected ',' after select condition") ||
3495 ParseTypeAndValue(Op1, PFS) ||
3496 ParseToken(lltok::comma, "expected ',' after select value") ||
3497 ParseTypeAndValue(Op2, PFS))
3500 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3501 return Error(Loc, Reason);
3503 Inst = SelectInst::Create(Op0, Op1, Op2);
3508 /// ::= 'va_arg' TypeAndValue ',' Type
3509 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3513 if (ParseTypeAndValue(Op, PFS) ||
3514 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3515 ParseType(EltTy, TypeLoc))
3518 if (!EltTy->isFirstClassType())
3519 return Error(TypeLoc, "va_arg requires operand with first class type");
3521 Inst = new VAArgInst(Op, EltTy);
3525 /// ParseExtractElement
3526 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3527 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3530 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3531 ParseToken(lltok::comma, "expected ',' after extract value") ||
3532 ParseTypeAndValue(Op1, PFS))
3535 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3536 return Error(Loc, "invalid extractelement operands");
3538 Inst = ExtractElementInst::Create(Op0, Op1);
3542 /// ParseInsertElement
3543 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3544 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3546 Value *Op0, *Op1, *Op2;
3547 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3548 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3549 ParseTypeAndValue(Op1, PFS) ||
3550 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3551 ParseTypeAndValue(Op2, PFS))
3554 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3555 return Error(Loc, "invalid insertelement operands");
3557 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3561 /// ParseShuffleVector
3562 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3563 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3565 Value *Op0, *Op1, *Op2;
3566 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3567 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3568 ParseTypeAndValue(Op1, PFS) ||
3569 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3570 ParseTypeAndValue(Op2, PFS))
3573 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3574 return Error(Loc, "invalid shufflevector operands");
3576 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3581 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3582 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3583 Type *Ty = 0; LocTy TypeLoc;
3586 if (ParseType(Ty, TypeLoc) ||
3587 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3588 ParseValue(Ty, Op0, PFS) ||
3589 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3590 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3591 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3594 bool AteExtraComma = false;
3595 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3597 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3599 if (!EatIfPresent(lltok::comma))
3602 if (Lex.getKind() == lltok::MetadataVar) {
3603 AteExtraComma = true;
3607 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3608 ParseValue(Ty, Op0, PFS) ||
3609 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3610 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3611 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3615 if (!Ty->isFirstClassType())
3616 return Error(TypeLoc, "phi node must have first class type");
3618 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
3619 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3620 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3622 return AteExtraComma ? InstExtraComma : InstNormal;
3626 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
3628 /// ::= 'catch' TypeAndValue
3630 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
3631 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
3632 Type *Ty = 0; LocTy TyLoc;
3633 Value *PersFn; LocTy PersFnLoc;
3635 if (ParseType(Ty, TyLoc) ||
3636 ParseToken(lltok::kw_personality, "expected 'personality'") ||
3637 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
3640 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
3641 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
3643 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
3644 LandingPadInst::ClauseType CT;
3645 if (EatIfPresent(lltok::kw_catch))
3646 CT = LandingPadInst::Catch;
3647 else if (EatIfPresent(lltok::kw_filter))
3648 CT = LandingPadInst::Filter;
3650 return TokError("expected 'catch' or 'filter' clause type");
3652 Value *V; LocTy VLoc;
3653 if (ParseTypeAndValue(V, VLoc, PFS)) {
3658 // A 'catch' type expects a non-array constant. A filter clause expects an
3660 if (CT == LandingPadInst::Catch) {
3661 if (isa<ArrayType>(V->getType()))
3662 Error(VLoc, "'catch' clause has an invalid type");
3664 if (!isa<ArrayType>(V->getType()))
3665 Error(VLoc, "'filter' clause has an invalid type");
3676 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3677 /// ParameterList OptionalAttrs
3678 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3680 AttrBuilder RetAttrs, FnAttrs;
3685 SmallVector<ParamInfo, 16> ArgList;
3686 LocTy CallLoc = Lex.getLoc();
3688 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3689 ParseOptionalCallingConv(CC) ||
3690 ParseOptionalAttrs(RetAttrs, 1) ||
3691 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3692 ParseValID(CalleeID) ||
3693 ParseParameterList(ArgList, PFS) ||
3694 ParseOptionalAttrs(FnAttrs, 2))
3697 // If RetType is a non-function pointer type, then this is the short syntax
3698 // for the call, which means that RetType is just the return type. Infer the
3699 // rest of the function argument types from the arguments that are present.
3700 PointerType *PFTy = 0;
3701 FunctionType *Ty = 0;
3702 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3703 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3704 // Pull out the types of all of the arguments...
3705 std::vector<Type*> ParamTypes;
3706 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3707 ParamTypes.push_back(ArgList[i].V->getType());
3709 if (!FunctionType::isValidReturnType(RetType))
3710 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3712 Ty = FunctionType::get(RetType, ParamTypes, false);
3713 PFTy = PointerType::getUnqual(Ty);
3716 // Look up the callee.
3718 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3720 // Set up the Attributes for the function.
3721 SmallVector<AttributeWithIndex, 8> Attrs;
3722 if (RetAttrs.hasAttributes())
3724 AttributeWithIndex::get(AttrListPtr::ReturnIndex,
3725 Attributes::get(Callee->getContext(),
3728 SmallVector<Value*, 8> Args;
3730 // Loop through FunctionType's arguments and ensure they are specified
3731 // correctly. Also, gather any parameter attributes.
3732 FunctionType::param_iterator I = Ty->param_begin();
3733 FunctionType::param_iterator E = Ty->param_end();
3734 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3735 Type *ExpectedTy = 0;
3738 } else if (!Ty->isVarArg()) {
3739 return Error(ArgList[i].Loc, "too many arguments specified");
3742 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3743 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3744 getTypeString(ExpectedTy) + "'");
3745 Args.push_back(ArgList[i].V);
3746 if (ArgList[i].Attrs.hasAttributes())
3747 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3751 return Error(CallLoc, "not enough parameters specified for call");
3753 if (FnAttrs.hasAttributes())
3755 AttributeWithIndex::get(AttrListPtr::FunctionIndex,
3756 Attributes::get(Callee->getContext(),
3759 // Finish off the Attributes and check them
3760 AttrListPtr PAL = AttrListPtr::get(Context, Attrs);
3762 CallInst *CI = CallInst::Create(Callee, Args);
3763 CI->setTailCall(isTail);
3764 CI->setCallingConv(CC);
3765 CI->setAttributes(PAL);
3770 //===----------------------------------------------------------------------===//
3771 // Memory Instructions.
3772 //===----------------------------------------------------------------------===//
3775 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3776 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
3779 unsigned Alignment = 0;
3781 if (ParseType(Ty)) return true;
3783 bool AteExtraComma = false;
3784 if (EatIfPresent(lltok::comma)) {
3785 if (Lex.getKind() == lltok::kw_align) {
3786 if (ParseOptionalAlignment(Alignment)) return true;
3787 } else if (Lex.getKind() == lltok::MetadataVar) {
3788 AteExtraComma = true;
3790 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3791 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3796 if (Size && !Size->getType()->isIntegerTy())
3797 return Error(SizeLoc, "element count must have integer type");
3799 Inst = new AllocaInst(Ty, Size, Alignment);
3800 return AteExtraComma ? InstExtraComma : InstNormal;
3804 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
3805 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
3806 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
3807 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
3808 Value *Val; LocTy Loc;
3809 unsigned Alignment = 0;
3810 bool AteExtraComma = false;
3811 bool isAtomic = false;
3812 AtomicOrdering Ordering = NotAtomic;
3813 SynchronizationScope Scope = CrossThread;
3815 if (Lex.getKind() == lltok::kw_atomic) {
3820 bool isVolatile = false;
3821 if (Lex.getKind() == lltok::kw_volatile) {
3826 if (ParseTypeAndValue(Val, Loc, PFS) ||
3827 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
3828 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3831 if (!Val->getType()->isPointerTy() ||
3832 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3833 return Error(Loc, "load operand must be a pointer to a first class type");
3834 if (isAtomic && !Alignment)
3835 return Error(Loc, "atomic load must have explicit non-zero alignment");
3836 if (Ordering == Release || Ordering == AcquireRelease)
3837 return Error(Loc, "atomic load cannot use Release ordering");
3839 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
3840 return AteExtraComma ? InstExtraComma : InstNormal;
3845 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3846 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
3847 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
3848 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
3849 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3850 unsigned Alignment = 0;
3851 bool AteExtraComma = false;
3852 bool isAtomic = false;
3853 AtomicOrdering Ordering = NotAtomic;
3854 SynchronizationScope Scope = CrossThread;
3856 if (Lex.getKind() == lltok::kw_atomic) {
3861 bool isVolatile = false;
3862 if (Lex.getKind() == lltok::kw_volatile) {
3867 if (ParseTypeAndValue(Val, Loc, PFS) ||
3868 ParseToken(lltok::comma, "expected ',' after store operand") ||
3869 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3870 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
3871 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3874 if (!Ptr->getType()->isPointerTy())
3875 return Error(PtrLoc, "store operand must be a pointer");
3876 if (!Val->getType()->isFirstClassType())
3877 return Error(Loc, "store operand must be a first class value");
3878 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3879 return Error(Loc, "stored value and pointer type do not match");
3880 if (isAtomic && !Alignment)
3881 return Error(Loc, "atomic store must have explicit non-zero alignment");
3882 if (Ordering == Acquire || Ordering == AcquireRelease)
3883 return Error(Loc, "atomic store cannot use Acquire ordering");
3885 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
3886 return AteExtraComma ? InstExtraComma : InstNormal;
3890 /// ::= 'cmpxchg' 'volatile'? TypeAndValue ',' TypeAndValue ',' TypeAndValue
3891 /// 'singlethread'? AtomicOrdering
3892 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
3893 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
3894 bool AteExtraComma = false;
3895 AtomicOrdering Ordering = NotAtomic;
3896 SynchronizationScope Scope = CrossThread;
3897 bool isVolatile = false;
3899 if (EatIfPresent(lltok::kw_volatile))
3902 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3903 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
3904 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
3905 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
3906 ParseTypeAndValue(New, NewLoc, PFS) ||
3907 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
3910 if (Ordering == Unordered)
3911 return TokError("cmpxchg cannot be unordered");
3912 if (!Ptr->getType()->isPointerTy())
3913 return Error(PtrLoc, "cmpxchg operand must be a pointer");
3914 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
3915 return Error(CmpLoc, "compare value and pointer type do not match");
3916 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
3917 return Error(NewLoc, "new value and pointer type do not match");
3918 if (!New->getType()->isIntegerTy())
3919 return Error(NewLoc, "cmpxchg operand must be an integer");
3920 unsigned Size = New->getType()->getPrimitiveSizeInBits();
3921 if (Size < 8 || (Size & (Size - 1)))
3922 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
3925 AtomicCmpXchgInst *CXI =
3926 new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, Scope);
3927 CXI->setVolatile(isVolatile);
3929 return AteExtraComma ? InstExtraComma : InstNormal;
3933 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
3934 /// 'singlethread'? AtomicOrdering
3935 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
3936 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
3937 bool AteExtraComma = false;
3938 AtomicOrdering Ordering = NotAtomic;
3939 SynchronizationScope Scope = CrossThread;
3940 bool isVolatile = false;
3941 AtomicRMWInst::BinOp Operation;
3943 if (EatIfPresent(lltok::kw_volatile))
3946 switch (Lex.getKind()) {
3947 default: return TokError("expected binary operation in atomicrmw");
3948 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
3949 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
3950 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
3951 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
3952 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
3953 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
3954 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
3955 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
3956 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
3957 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
3958 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
3960 Lex.Lex(); // Eat the operation.
3962 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3963 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
3964 ParseTypeAndValue(Val, ValLoc, PFS) ||
3965 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
3968 if (Ordering == Unordered)
3969 return TokError("atomicrmw cannot be unordered");
3970 if (!Ptr->getType()->isPointerTy())
3971 return Error(PtrLoc, "atomicrmw operand must be a pointer");
3972 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3973 return Error(ValLoc, "atomicrmw value and pointer type do not match");
3974 if (!Val->getType()->isIntegerTy())
3975 return Error(ValLoc, "atomicrmw operand must be an integer");
3976 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
3977 if (Size < 8 || (Size & (Size - 1)))
3978 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
3981 AtomicRMWInst *RMWI =
3982 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
3983 RMWI->setVolatile(isVolatile);
3985 return AteExtraComma ? InstExtraComma : InstNormal;
3989 /// ::= 'fence' 'singlethread'? AtomicOrdering
3990 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
3991 AtomicOrdering Ordering = NotAtomic;
3992 SynchronizationScope Scope = CrossThread;
3993 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
3996 if (Ordering == Unordered)
3997 return TokError("fence cannot be unordered");
3998 if (Ordering == Monotonic)
3999 return TokError("fence cannot be monotonic");
4001 Inst = new FenceInst(Context, Ordering, Scope);
4005 /// ParseGetElementPtr
4006 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
4007 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
4012 bool InBounds = EatIfPresent(lltok::kw_inbounds);
4014 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4016 if (!Ptr->getType()->getScalarType()->isPointerTy())
4017 return Error(Loc, "base of getelementptr must be a pointer");
4019 SmallVector<Value*, 16> Indices;
4020 bool AteExtraComma = false;
4021 while (EatIfPresent(lltok::comma)) {
4022 if (Lex.getKind() == lltok::MetadataVar) {
4023 AteExtraComma = true;
4026 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4027 if (!Val->getType()->getScalarType()->isIntegerTy())
4028 return Error(EltLoc, "getelementptr index must be an integer");
4029 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4030 return Error(EltLoc, "getelementptr index type missmatch");
4031 if (Val->getType()->isVectorTy()) {
4032 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4033 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4034 if (ValNumEl != PtrNumEl)
4035 return Error(EltLoc,
4036 "getelementptr vector index has a wrong number of elements");
4038 Indices.push_back(Val);
4041 if (!GetElementPtrInst::getIndexedType(Ptr->getType(), Indices))
4042 return Error(Loc, "invalid getelementptr indices");
4043 Inst = GetElementPtrInst::Create(Ptr, Indices);
4045 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4046 return AteExtraComma ? InstExtraComma : InstNormal;
4049 /// ParseExtractValue
4050 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4051 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4052 Value *Val; LocTy Loc;
4053 SmallVector<unsigned, 4> Indices;
4055 if (ParseTypeAndValue(Val, Loc, PFS) ||
4056 ParseIndexList(Indices, AteExtraComma))
4059 if (!Val->getType()->isAggregateType())
4060 return Error(Loc, "extractvalue operand must be aggregate type");
4062 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4063 return Error(Loc, "invalid indices for extractvalue");
4064 Inst = ExtractValueInst::Create(Val, Indices);
4065 return AteExtraComma ? InstExtraComma : InstNormal;
4068 /// ParseInsertValue
4069 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4070 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4071 Value *Val0, *Val1; LocTy Loc0, Loc1;
4072 SmallVector<unsigned, 4> Indices;
4074 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4075 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4076 ParseTypeAndValue(Val1, Loc1, PFS) ||
4077 ParseIndexList(Indices, AteExtraComma))
4080 if (!Val0->getType()->isAggregateType())
4081 return Error(Loc0, "insertvalue operand must be aggregate type");
4083 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4084 return Error(Loc0, "invalid indices for insertvalue");
4085 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4086 return AteExtraComma ? InstExtraComma : InstNormal;
4089 //===----------------------------------------------------------------------===//
4090 // Embedded metadata.
4091 //===----------------------------------------------------------------------===//
4093 /// ParseMDNodeVector
4094 /// ::= Element (',' Element)*
4096 /// ::= 'null' | TypeAndValue
4097 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4098 PerFunctionState *PFS) {
4099 // Check for an empty list.
4100 if (Lex.getKind() == lltok::rbrace)
4104 // Null is a special case since it is typeless.
4105 if (EatIfPresent(lltok::kw_null)) {
4111 if (ParseTypeAndValue(V, PFS)) return true;
4113 } while (EatIfPresent(lltok::comma));