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 bool LLParser::ParseDepLibs() {
271 assert(Lex.getKind() == lltok::kw_deplibs);
273 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
274 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
277 if (EatIfPresent(lltok::rsquare))
281 if (ParseStringConstant(Str)) return true;
284 while (EatIfPresent(lltok::comma)) {
285 if (ParseStringConstant(Str)) return true;
289 return ParseToken(lltok::rsquare, "expected ']' at end of list");
292 /// ParseUnnamedType:
293 /// ::= LocalVarID '=' 'type' type
294 bool LLParser::ParseUnnamedType() {
295 LocTy TypeLoc = Lex.getLoc();
296 unsigned TypeID = Lex.getUIntVal();
297 Lex.Lex(); // eat LocalVarID;
299 if (ParseToken(lltok::equal, "expected '=' after name") ||
300 ParseToken(lltok::kw_type, "expected 'type' after '='"))
303 if (TypeID >= NumberedTypes.size())
304 NumberedTypes.resize(TypeID+1);
307 if (ParseStructDefinition(TypeLoc, "",
308 NumberedTypes[TypeID], Result)) return true;
310 if (!isa<StructType>(Result)) {
311 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
313 return Error(TypeLoc, "non-struct types may not be recursive");
314 Entry.first = Result;
315 Entry.second = SMLoc();
323 /// ::= LocalVar '=' 'type' type
324 bool LLParser::ParseNamedType() {
325 std::string Name = Lex.getStrVal();
326 LocTy NameLoc = Lex.getLoc();
327 Lex.Lex(); // eat LocalVar.
329 if (ParseToken(lltok::equal, "expected '=' after name") ||
330 ParseToken(lltok::kw_type, "expected 'type' after name"))
334 if (ParseStructDefinition(NameLoc, Name,
335 NamedTypes[Name], Result)) return true;
337 if (!isa<StructType>(Result)) {
338 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
340 return Error(NameLoc, "non-struct types may not be recursive");
341 Entry.first = Result;
342 Entry.second = SMLoc();
350 /// ::= 'declare' FunctionHeader
351 bool LLParser::ParseDeclare() {
352 assert(Lex.getKind() == lltok::kw_declare);
356 return ParseFunctionHeader(F, false);
360 /// ::= 'define' FunctionHeader '{' ...
361 bool LLParser::ParseDefine() {
362 assert(Lex.getKind() == lltok::kw_define);
366 return ParseFunctionHeader(F, true) ||
367 ParseFunctionBody(*F);
373 bool LLParser::ParseGlobalType(bool &IsConstant) {
374 if (Lex.getKind() == lltok::kw_constant)
376 else if (Lex.getKind() == lltok::kw_global)
380 return TokError("expected 'global' or 'constant'");
386 /// ParseUnnamedGlobal:
387 /// OptionalVisibility ALIAS ...
388 /// OptionalLinkage OptionalVisibility ... -> global variable
389 /// GlobalID '=' OptionalVisibility ALIAS ...
390 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
391 bool LLParser::ParseUnnamedGlobal() {
392 unsigned VarID = NumberedVals.size();
394 LocTy NameLoc = Lex.getLoc();
396 // Handle the GlobalID form.
397 if (Lex.getKind() == lltok::GlobalID) {
398 if (Lex.getUIntVal() != VarID)
399 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
401 Lex.Lex(); // eat GlobalID;
403 if (ParseToken(lltok::equal, "expected '=' after name"))
408 unsigned Linkage, Visibility;
409 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
410 ParseOptionalVisibility(Visibility))
413 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
414 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
415 return ParseAlias(Name, NameLoc, Visibility);
418 /// ParseNamedGlobal:
419 /// GlobalVar '=' OptionalVisibility ALIAS ...
420 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
421 bool LLParser::ParseNamedGlobal() {
422 assert(Lex.getKind() == lltok::GlobalVar);
423 LocTy NameLoc = Lex.getLoc();
424 std::string Name = Lex.getStrVal();
428 unsigned Linkage, Visibility;
429 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
430 ParseOptionalLinkage(Linkage, HasLinkage) ||
431 ParseOptionalVisibility(Visibility))
434 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
435 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
436 return ParseAlias(Name, NameLoc, Visibility);
440 // ::= '!' STRINGCONSTANT
441 bool LLParser::ParseMDString(MDString *&Result) {
443 if (ParseStringConstant(Str)) return true;
444 Result = MDString::get(Context, Str);
449 // ::= '!' MDNodeNumber
451 /// This version of ParseMDNodeID returns the slot number and null in the case
452 /// of a forward reference.
453 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
454 // !{ ..., !42, ... }
455 if (ParseUInt32(SlotNo)) return true;
457 // Check existing MDNode.
458 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != 0)
459 Result = NumberedMetadata[SlotNo];
465 bool LLParser::ParseMDNodeID(MDNode *&Result) {
466 // !{ ..., !42, ... }
468 if (ParseMDNodeID(Result, MID)) return true;
470 // If not a forward reference, just return it now.
471 if (Result) return false;
473 // Otherwise, create MDNode forward reference.
474 MDNode *FwdNode = MDNode::getTemporary(Context, ArrayRef<Value*>());
475 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
477 if (NumberedMetadata.size() <= MID)
478 NumberedMetadata.resize(MID+1);
479 NumberedMetadata[MID] = FwdNode;
484 /// ParseNamedMetadata:
485 /// !foo = !{ !1, !2 }
486 bool LLParser::ParseNamedMetadata() {
487 assert(Lex.getKind() == lltok::MetadataVar);
488 std::string Name = Lex.getStrVal();
491 if (ParseToken(lltok::equal, "expected '=' here") ||
492 ParseToken(lltok::exclaim, "Expected '!' here") ||
493 ParseToken(lltok::lbrace, "Expected '{' here"))
496 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
497 if (Lex.getKind() != lltok::rbrace)
499 if (ParseToken(lltok::exclaim, "Expected '!' here"))
503 if (ParseMDNodeID(N)) return true;
505 } while (EatIfPresent(lltok::comma));
507 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
513 /// ParseStandaloneMetadata:
515 bool LLParser::ParseStandaloneMetadata() {
516 assert(Lex.getKind() == lltok::exclaim);
518 unsigned MetadataID = 0;
522 SmallVector<Value *, 16> Elts;
523 if (ParseUInt32(MetadataID) ||
524 ParseToken(lltok::equal, "expected '=' here") ||
525 ParseType(Ty, TyLoc) ||
526 ParseToken(lltok::exclaim, "Expected '!' here") ||
527 ParseToken(lltok::lbrace, "Expected '{' here") ||
528 ParseMDNodeVector(Elts, NULL) ||
529 ParseToken(lltok::rbrace, "expected end of metadata node"))
532 MDNode *Init = MDNode::get(Context, Elts);
534 // See if this was forward referenced, if so, handle it.
535 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
536 FI = ForwardRefMDNodes.find(MetadataID);
537 if (FI != ForwardRefMDNodes.end()) {
538 MDNode *Temp = FI->second.first;
539 Temp->replaceAllUsesWith(Init);
540 MDNode::deleteTemporary(Temp);
541 ForwardRefMDNodes.erase(FI);
543 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
545 if (MetadataID >= NumberedMetadata.size())
546 NumberedMetadata.resize(MetadataID+1);
548 if (NumberedMetadata[MetadataID] != 0)
549 return TokError("Metadata id is already used");
550 NumberedMetadata[MetadataID] = Init;
557 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
560 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
561 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
563 /// Everything through visibility has already been parsed.
565 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
566 unsigned Visibility) {
567 assert(Lex.getKind() == lltok::kw_alias);
570 LocTy LinkageLoc = Lex.getLoc();
571 if (ParseOptionalLinkage(Linkage))
574 if (Linkage != GlobalValue::ExternalLinkage &&
575 Linkage != GlobalValue::WeakAnyLinkage &&
576 Linkage != GlobalValue::WeakODRLinkage &&
577 Linkage != GlobalValue::InternalLinkage &&
578 Linkage != GlobalValue::PrivateLinkage &&
579 Linkage != GlobalValue::LinkerPrivateLinkage &&
580 Linkage != GlobalValue::LinkerPrivateWeakLinkage)
581 return Error(LinkageLoc, "invalid linkage type for alias");
584 LocTy AliaseeLoc = Lex.getLoc();
585 if (Lex.getKind() != lltok::kw_bitcast &&
586 Lex.getKind() != lltok::kw_getelementptr) {
587 if (ParseGlobalTypeAndValue(Aliasee)) return true;
589 // The bitcast dest type is not present, it is implied by the dest type.
591 if (ParseValID(ID)) return true;
592 if (ID.Kind != ValID::t_Constant)
593 return Error(AliaseeLoc, "invalid aliasee");
594 Aliasee = ID.ConstantVal;
597 if (!Aliasee->getType()->isPointerTy())
598 return Error(AliaseeLoc, "alias must have pointer type");
600 // Okay, create the alias but do not insert it into the module yet.
601 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
602 (GlobalValue::LinkageTypes)Linkage, Name,
604 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
606 // See if this value already exists in the symbol table. If so, it is either
607 // a redefinition or a definition of a forward reference.
608 if (GlobalValue *Val = M->getNamedValue(Name)) {
609 // See if this was a redefinition. If so, there is no entry in
611 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
612 I = ForwardRefVals.find(Name);
613 if (I == ForwardRefVals.end())
614 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
616 // Otherwise, this was a definition of forward ref. Verify that types
618 if (Val->getType() != GA->getType())
619 return Error(NameLoc,
620 "forward reference and definition of alias have different types");
622 // If they agree, just RAUW the old value with the alias and remove the
624 Val->replaceAllUsesWith(GA);
625 Val->eraseFromParent();
626 ForwardRefVals.erase(I);
629 // Insert into the module, we know its name won't collide now.
630 M->getAliasList().push_back(GA);
631 assert(GA->getName() == Name && "Should not be a name conflict!");
637 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
638 /// OptionalAddrSpace OptionalUnNammedAddr GlobalType Type Const
639 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
640 /// OptionalAddrSpace OptionalUnNammedAddr GlobalType Type Const
642 /// Everything through visibility has been parsed already.
644 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
645 unsigned Linkage, bool HasLinkage,
646 unsigned Visibility) {
648 bool IsConstant, UnnamedAddr;
649 GlobalVariable::ThreadLocalMode TLM;
650 LocTy UnnamedAddrLoc;
654 if (ParseOptionalThreadLocal(TLM) ||
655 ParseOptionalAddrSpace(AddrSpace) ||
656 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
658 ParseGlobalType(IsConstant) ||
659 ParseType(Ty, TyLoc))
662 // If the linkage is specified and is external, then no initializer is
665 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
666 Linkage != GlobalValue::ExternalWeakLinkage &&
667 Linkage != GlobalValue::ExternalLinkage)) {
668 if (ParseGlobalValue(Ty, Init))
672 if (Ty->isFunctionTy() || Ty->isLabelTy())
673 return Error(TyLoc, "invalid type for global variable");
675 GlobalVariable *GV = 0;
677 // See if the global was forward referenced, if so, use the global.
679 if (GlobalValue *GVal = M->getNamedValue(Name)) {
680 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
681 return Error(NameLoc, "redefinition of global '@" + Name + "'");
682 GV = cast<GlobalVariable>(GVal);
685 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
686 I = ForwardRefValIDs.find(NumberedVals.size());
687 if (I != ForwardRefValIDs.end()) {
688 GV = cast<GlobalVariable>(I->second.first);
689 ForwardRefValIDs.erase(I);
694 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
695 Name, 0, GlobalVariable::NotThreadLocal,
698 if (GV->getType()->getElementType() != Ty)
700 "forward reference and definition of global have different types");
702 // Move the forward-reference to the correct spot in the module.
703 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
707 NumberedVals.push_back(GV);
709 // Set the parsed properties on the global.
711 GV->setInitializer(Init);
712 GV->setConstant(IsConstant);
713 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
714 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
715 GV->setThreadLocalMode(TLM);
716 GV->setUnnamedAddr(UnnamedAddr);
718 // Parse attributes on the global.
719 while (Lex.getKind() == lltok::comma) {
722 if (Lex.getKind() == lltok::kw_section) {
724 GV->setSection(Lex.getStrVal());
725 if (ParseToken(lltok::StringConstant, "expected global section string"))
727 } else if (Lex.getKind() == lltok::kw_align) {
729 if (ParseOptionalAlignment(Alignment)) return true;
730 GV->setAlignment(Alignment);
732 TokError("unknown global variable property!");
740 //===----------------------------------------------------------------------===//
741 // GlobalValue Reference/Resolution Routines.
742 //===----------------------------------------------------------------------===//
744 /// GetGlobalVal - Get a value with the specified name or ID, creating a
745 /// forward reference record if needed. This can return null if the value
746 /// exists but does not have the right type.
747 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
749 PointerType *PTy = dyn_cast<PointerType>(Ty);
751 Error(Loc, "global variable reference must have pointer type");
755 // Look this name up in the normal function symbol table.
757 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
759 // If this is a forward reference for the value, see if we already created a
760 // forward ref record.
762 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
763 I = ForwardRefVals.find(Name);
764 if (I != ForwardRefVals.end())
765 Val = I->second.first;
768 // If we have the value in the symbol table or fwd-ref table, return it.
770 if (Val->getType() == Ty) return Val;
771 Error(Loc, "'@" + Name + "' defined with type '" +
772 getTypeString(Val->getType()) + "'");
776 // Otherwise, create a new forward reference for this value and remember it.
778 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
779 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
781 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
782 GlobalValue::ExternalWeakLinkage, 0, Name);
784 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
788 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
789 PointerType *PTy = dyn_cast<PointerType>(Ty);
791 Error(Loc, "global variable reference must have pointer type");
795 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
797 // If this is a forward reference for the value, see if we already created a
798 // forward ref record.
800 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
801 I = ForwardRefValIDs.find(ID);
802 if (I != ForwardRefValIDs.end())
803 Val = I->second.first;
806 // If we have the value in the symbol table or fwd-ref table, return it.
808 if (Val->getType() == Ty) return Val;
809 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
810 getTypeString(Val->getType()) + "'");
814 // Otherwise, create a new forward reference for this value and remember it.
816 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
817 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
819 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
820 GlobalValue::ExternalWeakLinkage, 0, "");
822 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
827 //===----------------------------------------------------------------------===//
829 //===----------------------------------------------------------------------===//
831 /// ParseToken - If the current token has the specified kind, eat it and return
832 /// success. Otherwise, emit the specified error and return failure.
833 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
834 if (Lex.getKind() != T)
835 return TokError(ErrMsg);
840 /// ParseStringConstant
841 /// ::= StringConstant
842 bool LLParser::ParseStringConstant(std::string &Result) {
843 if (Lex.getKind() != lltok::StringConstant)
844 return TokError("expected string constant");
845 Result = Lex.getStrVal();
852 bool LLParser::ParseUInt32(unsigned &Val) {
853 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
854 return TokError("expected integer");
855 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
856 if (Val64 != unsigned(Val64))
857 return TokError("expected 32-bit integer (too large)");
864 /// := 'localdynamic'
867 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
868 switch (Lex.getKind()) {
870 return TokError("expected localdynamic, initialexec or localexec");
871 case lltok::kw_localdynamic:
872 TLM = GlobalVariable::LocalDynamicTLSModel;
874 case lltok::kw_initialexec:
875 TLM = GlobalVariable::InitialExecTLSModel;
877 case lltok::kw_localexec:
878 TLM = GlobalVariable::LocalExecTLSModel;
886 /// ParseOptionalThreadLocal
888 /// := 'thread_local'
889 /// := 'thread_local' '(' tlsmodel ')'
890 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
891 TLM = GlobalVariable::NotThreadLocal;
892 if (!EatIfPresent(lltok::kw_thread_local))
895 TLM = GlobalVariable::GeneralDynamicTLSModel;
896 if (Lex.getKind() == lltok::lparen) {
898 return ParseTLSModel(TLM) ||
899 ParseToken(lltok::rparen, "expected ')' after thread local model");
904 /// ParseOptionalAddrSpace
906 /// := 'addrspace' '(' uint32 ')'
907 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
909 if (!EatIfPresent(lltok::kw_addrspace))
911 return ParseToken(lltok::lparen, "expected '(' in address space") ||
912 ParseUInt32(AddrSpace) ||
913 ParseToken(lltok::rparen, "expected ')' in address space");
916 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
917 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
918 /// 2: function attr.
919 bool LLParser::ParseOptionalAttrs(Attributes &Attrs, unsigned AttrKind) {
920 Attrs = Attribute::None;
921 LocTy AttrLoc = Lex.getLoc();
924 switch (Lex.getKind()) {
925 default: // End of attributes.
926 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
927 return Error(AttrLoc, "invalid use of function-only attribute");
929 // As a hack, we allow "align 2" on functions as a synonym for
932 (Attrs & ~(Attribute::FunctionOnly | Attribute::Alignment)))
933 return Error(AttrLoc, "invalid use of attribute on a function");
935 if (AttrKind != 0 && (Attrs & Attribute::ParameterOnly))
936 return Error(AttrLoc, "invalid use of parameter-only attribute");
939 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
940 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
941 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
942 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
943 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
944 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
945 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
946 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
948 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
949 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
950 case lltok::kw_uwtable: Attrs |= Attribute::UWTable; break;
951 case lltok::kw_returns_twice: Attrs |= Attribute::ReturnsTwice; break;
952 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
953 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
954 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
955 case lltok::kw_inlinehint: Attrs |= Attribute::InlineHint; break;
956 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
957 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
958 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
959 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
960 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
961 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
962 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
963 case lltok::kw_nonlazybind: Attrs |= Attribute::NonLazyBind; break;
964 case lltok::kw_address_safety: Attrs |= Attribute::AddressSafety; break;
965 case lltok::kw_ia_nsdialect: Attrs |= Attribute::IANSDialect; break;
967 case lltok::kw_alignstack: {
969 if (ParseOptionalStackAlignment(Alignment))
971 Attrs |= Attribute::constructStackAlignmentFromInt(Alignment);
975 case lltok::kw_align: {
977 if (ParseOptionalAlignment(Alignment))
979 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
988 /// ParseOptionalLinkage
991 /// ::= 'linker_private'
992 /// ::= 'linker_private_weak'
997 /// ::= 'linkonce_odr'
998 /// ::= 'linkonce_odr_auto_hide'
999 /// ::= 'available_externally'
1004 /// ::= 'extern_weak'
1006 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1008 switch (Lex.getKind()) {
1009 default: Res=GlobalValue::ExternalLinkage; return false;
1010 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1011 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1012 case lltok::kw_linker_private_weak:
1013 Res = GlobalValue::LinkerPrivateWeakLinkage;
1015 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1016 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1017 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1018 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1019 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1020 case lltok::kw_linkonce_odr_auto_hide:
1021 case lltok::kw_linker_private_weak_def_auto: // FIXME: For backwards compat.
1022 Res = GlobalValue::LinkOnceODRAutoHideLinkage;
1024 case lltok::kw_available_externally:
1025 Res = GlobalValue::AvailableExternallyLinkage;
1027 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1028 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1029 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1030 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1031 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1032 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1039 /// ParseOptionalVisibility
1045 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1046 switch (Lex.getKind()) {
1047 default: Res = GlobalValue::DefaultVisibility; return false;
1048 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1049 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1050 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1056 /// ParseOptionalCallingConv
1061 /// ::= 'x86_stdcallcc'
1062 /// ::= 'x86_fastcallcc'
1063 /// ::= 'x86_thiscallcc'
1064 /// ::= 'arm_apcscc'
1065 /// ::= 'arm_aapcscc'
1066 /// ::= 'arm_aapcs_vfpcc'
1067 /// ::= 'msp430_intrcc'
1068 /// ::= 'ptx_kernel'
1069 /// ::= 'ptx_device'
1072 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1073 switch (Lex.getKind()) {
1074 default: CC = CallingConv::C; return false;
1075 case lltok::kw_ccc: CC = CallingConv::C; break;
1076 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1077 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1078 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1079 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1080 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1081 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1082 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1083 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1084 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1085 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1086 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1087 case lltok::kw_cc: {
1088 unsigned ArbitraryCC;
1090 if (ParseUInt32(ArbitraryCC))
1092 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1101 /// ParseInstructionMetadata
1102 /// ::= !dbg !42 (',' !dbg !57)*
1103 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1104 PerFunctionState *PFS) {
1106 if (Lex.getKind() != lltok::MetadataVar)
1107 return TokError("expected metadata after comma");
1109 std::string Name = Lex.getStrVal();
1110 unsigned MDK = M->getMDKindID(Name);
1114 SMLoc Loc = Lex.getLoc();
1116 if (ParseToken(lltok::exclaim, "expected '!' here"))
1119 // This code is similar to that of ParseMetadataValue, however it needs to
1120 // have special-case code for a forward reference; see the comments on
1121 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1122 // at the top level here.
1123 if (Lex.getKind() == lltok::lbrace) {
1125 if (ParseMetadataListValue(ID, PFS))
1127 assert(ID.Kind == ValID::t_MDNode);
1128 Inst->setMetadata(MDK, ID.MDNodeVal);
1130 unsigned NodeID = 0;
1131 if (ParseMDNodeID(Node, NodeID))
1134 // If we got the node, add it to the instruction.
1135 Inst->setMetadata(MDK, Node);
1137 MDRef R = { Loc, MDK, NodeID };
1138 // Otherwise, remember that this should be resolved later.
1139 ForwardRefInstMetadata[Inst].push_back(R);
1143 // If this is the end of the list, we're done.
1144 } while (EatIfPresent(lltok::comma));
1148 /// ParseOptionalAlignment
1151 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1153 if (!EatIfPresent(lltok::kw_align))
1155 LocTy AlignLoc = Lex.getLoc();
1156 if (ParseUInt32(Alignment)) return true;
1157 if (!isPowerOf2_32(Alignment))
1158 return Error(AlignLoc, "alignment is not a power of two");
1159 if (Alignment > Value::MaximumAlignment)
1160 return Error(AlignLoc, "huge alignments are not supported yet");
1164 /// ParseOptionalCommaAlign
1168 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1170 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1171 bool &AteExtraComma) {
1172 AteExtraComma = false;
1173 while (EatIfPresent(lltok::comma)) {
1174 // Metadata at the end is an early exit.
1175 if (Lex.getKind() == lltok::MetadataVar) {
1176 AteExtraComma = true;
1180 if (Lex.getKind() != lltok::kw_align)
1181 return Error(Lex.getLoc(), "expected metadata or 'align'");
1183 if (ParseOptionalAlignment(Alignment)) return true;
1189 /// ParseScopeAndOrdering
1190 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1193 /// This sets Scope and Ordering to the parsed values.
1194 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1195 AtomicOrdering &Ordering) {
1199 Scope = CrossThread;
1200 if (EatIfPresent(lltok::kw_singlethread))
1201 Scope = SingleThread;
1202 switch (Lex.getKind()) {
1203 default: return TokError("Expected ordering on atomic instruction");
1204 case lltok::kw_unordered: Ordering = Unordered; break;
1205 case lltok::kw_monotonic: Ordering = Monotonic; break;
1206 case lltok::kw_acquire: Ordering = Acquire; break;
1207 case lltok::kw_release: Ordering = Release; break;
1208 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1209 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1215 /// ParseOptionalStackAlignment
1217 /// ::= 'alignstack' '(' 4 ')'
1218 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1220 if (!EatIfPresent(lltok::kw_alignstack))
1222 LocTy ParenLoc = Lex.getLoc();
1223 if (!EatIfPresent(lltok::lparen))
1224 return Error(ParenLoc, "expected '('");
1225 LocTy AlignLoc = Lex.getLoc();
1226 if (ParseUInt32(Alignment)) return true;
1227 ParenLoc = Lex.getLoc();
1228 if (!EatIfPresent(lltok::rparen))
1229 return Error(ParenLoc, "expected ')'");
1230 if (!isPowerOf2_32(Alignment))
1231 return Error(AlignLoc, "stack alignment is not a power of two");
1235 /// ParseIndexList - This parses the index list for an insert/extractvalue
1236 /// instruction. This sets AteExtraComma in the case where we eat an extra
1237 /// comma at the end of the line and find that it is followed by metadata.
1238 /// Clients that don't allow metadata can call the version of this function that
1239 /// only takes one argument.
1242 /// ::= (',' uint32)+
1244 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1245 bool &AteExtraComma) {
1246 AteExtraComma = false;
1248 if (Lex.getKind() != lltok::comma)
1249 return TokError("expected ',' as start of index list");
1251 while (EatIfPresent(lltok::comma)) {
1252 if (Lex.getKind() == lltok::MetadataVar) {
1253 AteExtraComma = true;
1257 if (ParseUInt32(Idx)) return true;
1258 Indices.push_back(Idx);
1264 //===----------------------------------------------------------------------===//
1266 //===----------------------------------------------------------------------===//
1268 /// ParseType - Parse a type.
1269 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1270 SMLoc TypeLoc = Lex.getLoc();
1271 switch (Lex.getKind()) {
1273 return TokError("expected type");
1275 // Type ::= 'float' | 'void' (etc)
1276 Result = Lex.getTyVal();
1280 // Type ::= StructType
1281 if (ParseAnonStructType(Result, false))
1284 case lltok::lsquare:
1285 // Type ::= '[' ... ']'
1286 Lex.Lex(); // eat the lsquare.
1287 if (ParseArrayVectorType(Result, false))
1290 case lltok::less: // Either vector or packed struct.
1291 // Type ::= '<' ... '>'
1293 if (Lex.getKind() == lltok::lbrace) {
1294 if (ParseAnonStructType(Result, true) ||
1295 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1297 } else if (ParseArrayVectorType(Result, true))
1300 case lltok::LocalVar: {
1302 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1304 // If the type hasn't been defined yet, create a forward definition and
1305 // remember where that forward def'n was seen (in case it never is defined).
1306 if (Entry.first == 0) {
1307 Entry.first = StructType::create(Context, Lex.getStrVal());
1308 Entry.second = Lex.getLoc();
1310 Result = Entry.first;
1315 case lltok::LocalVarID: {
1317 if (Lex.getUIntVal() >= NumberedTypes.size())
1318 NumberedTypes.resize(Lex.getUIntVal()+1);
1319 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1321 // If the type hasn't been defined yet, create a forward definition and
1322 // remember where that forward def'n was seen (in case it never is defined).
1323 if (Entry.first == 0) {
1324 Entry.first = StructType::create(Context);
1325 Entry.second = Lex.getLoc();
1327 Result = Entry.first;
1333 // Parse the type suffixes.
1335 switch (Lex.getKind()) {
1338 if (!AllowVoid && Result->isVoidTy())
1339 return Error(TypeLoc, "void type only allowed for function results");
1342 // Type ::= Type '*'
1344 if (Result->isLabelTy())
1345 return TokError("basic block pointers are invalid");
1346 if (Result->isVoidTy())
1347 return TokError("pointers to void are invalid - use i8* instead");
1348 if (!PointerType::isValidElementType(Result))
1349 return TokError("pointer to this type is invalid");
1350 Result = PointerType::getUnqual(Result);
1354 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1355 case lltok::kw_addrspace: {
1356 if (Result->isLabelTy())
1357 return TokError("basic block pointers are invalid");
1358 if (Result->isVoidTy())
1359 return TokError("pointers to void are invalid; use i8* instead");
1360 if (!PointerType::isValidElementType(Result))
1361 return TokError("pointer to this type is invalid");
1363 if (ParseOptionalAddrSpace(AddrSpace) ||
1364 ParseToken(lltok::star, "expected '*' in address space"))
1367 Result = PointerType::get(Result, AddrSpace);
1371 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1373 if (ParseFunctionType(Result))
1380 /// ParseParameterList
1382 /// ::= '(' Arg (',' Arg)* ')'
1384 /// ::= Type OptionalAttributes Value OptionalAttributes
1385 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1386 PerFunctionState &PFS) {
1387 if (ParseToken(lltok::lparen, "expected '(' in call"))
1390 while (Lex.getKind() != lltok::rparen) {
1391 // If this isn't the first argument, we need a comma.
1392 if (!ArgList.empty() &&
1393 ParseToken(lltok::comma, "expected ',' in argument list"))
1396 // Parse the argument.
1399 Attributes ArgAttrs1;
1400 Attributes ArgAttrs2;
1402 if (ParseType(ArgTy, ArgLoc))
1405 // Otherwise, handle normal operands.
1406 if (ParseOptionalAttrs(ArgAttrs1, 0) || ParseValue(ArgTy, V, PFS))
1408 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1411 Lex.Lex(); // Lex the ')'.
1417 /// ParseArgumentList - Parse the argument list for a function type or function
1419 /// ::= '(' ArgTypeListI ')'
1423 /// ::= ArgTypeList ',' '...'
1424 /// ::= ArgType (',' ArgType)*
1426 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1429 assert(Lex.getKind() == lltok::lparen);
1430 Lex.Lex(); // eat the (.
1432 if (Lex.getKind() == lltok::rparen) {
1434 } else if (Lex.getKind() == lltok::dotdotdot) {
1438 LocTy TypeLoc = Lex.getLoc();
1443 if (ParseType(ArgTy) ||
1444 ParseOptionalAttrs(Attrs, 0)) return true;
1446 if (ArgTy->isVoidTy())
1447 return Error(TypeLoc, "argument can not have void type");
1449 if (Lex.getKind() == lltok::LocalVar) {
1450 Name = Lex.getStrVal();
1454 if (!FunctionType::isValidArgumentType(ArgTy))
1455 return Error(TypeLoc, "invalid type for function argument");
1457 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1459 while (EatIfPresent(lltok::comma)) {
1460 // Handle ... at end of arg list.
1461 if (EatIfPresent(lltok::dotdotdot)) {
1466 // Otherwise must be an argument type.
1467 TypeLoc = Lex.getLoc();
1468 if (ParseType(ArgTy) || ParseOptionalAttrs(Attrs, 0)) return true;
1470 if (ArgTy->isVoidTy())
1471 return Error(TypeLoc, "argument can not have void type");
1473 if (Lex.getKind() == lltok::LocalVar) {
1474 Name = Lex.getStrVal();
1480 if (!ArgTy->isFirstClassType())
1481 return Error(TypeLoc, "invalid type for function argument");
1483 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1487 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1490 /// ParseFunctionType
1491 /// ::= Type ArgumentList OptionalAttrs
1492 bool LLParser::ParseFunctionType(Type *&Result) {
1493 assert(Lex.getKind() == lltok::lparen);
1495 if (!FunctionType::isValidReturnType(Result))
1496 return TokError("invalid function return type");
1498 SmallVector<ArgInfo, 8> ArgList;
1500 if (ParseArgumentList(ArgList, isVarArg))
1503 // Reject names on the arguments lists.
1504 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1505 if (!ArgList[i].Name.empty())
1506 return Error(ArgList[i].Loc, "argument name invalid in function type");
1507 if (ArgList[i].Attrs)
1508 return Error(ArgList[i].Loc,
1509 "argument attributes invalid in function type");
1512 SmallVector<Type*, 16> ArgListTy;
1513 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1514 ArgListTy.push_back(ArgList[i].Ty);
1516 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1520 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1522 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1523 SmallVector<Type*, 8> Elts;
1524 if (ParseStructBody(Elts)) return true;
1526 Result = StructType::get(Context, Elts, Packed);
1530 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1531 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1532 std::pair<Type*, LocTy> &Entry,
1534 // If the type was already defined, diagnose the redefinition.
1535 if (Entry.first && !Entry.second.isValid())
1536 return Error(TypeLoc, "redefinition of type");
1538 // If we have opaque, just return without filling in the definition for the
1539 // struct. This counts as a definition as far as the .ll file goes.
1540 if (EatIfPresent(lltok::kw_opaque)) {
1541 // This type is being defined, so clear the location to indicate this.
1542 Entry.second = SMLoc();
1544 // If this type number has never been uttered, create it.
1545 if (Entry.first == 0)
1546 Entry.first = StructType::create(Context, Name);
1547 ResultTy = Entry.first;
1551 // If the type starts with '<', then it is either a packed struct or a vector.
1552 bool isPacked = EatIfPresent(lltok::less);
1554 // If we don't have a struct, then we have a random type alias, which we
1555 // accept for compatibility with old files. These types are not allowed to be
1556 // forward referenced and not allowed to be recursive.
1557 if (Lex.getKind() != lltok::lbrace) {
1559 return Error(TypeLoc, "forward references to non-struct type");
1563 return ParseArrayVectorType(ResultTy, true);
1564 return ParseType(ResultTy);
1567 // This type is being defined, so clear the location to indicate this.
1568 Entry.second = SMLoc();
1570 // If this type number has never been uttered, create it.
1571 if (Entry.first == 0)
1572 Entry.first = StructType::create(Context, Name);
1574 StructType *STy = cast<StructType>(Entry.first);
1576 SmallVector<Type*, 8> Body;
1577 if (ParseStructBody(Body) ||
1578 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
1581 STy->setBody(Body, isPacked);
1587 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1590 /// ::= '{' Type (',' Type)* '}'
1591 /// ::= '<' '{' '}' '>'
1592 /// ::= '<' '{' Type (',' Type)* '}' '>'
1593 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
1594 assert(Lex.getKind() == lltok::lbrace);
1595 Lex.Lex(); // Consume the '{'
1597 // Handle the empty struct.
1598 if (EatIfPresent(lltok::rbrace))
1601 LocTy EltTyLoc = Lex.getLoc();
1603 if (ParseType(Ty)) return true;
1606 if (!StructType::isValidElementType(Ty))
1607 return Error(EltTyLoc, "invalid element type for struct");
1609 while (EatIfPresent(lltok::comma)) {
1610 EltTyLoc = Lex.getLoc();
1611 if (ParseType(Ty)) return true;
1613 if (!StructType::isValidElementType(Ty))
1614 return Error(EltTyLoc, "invalid element type for struct");
1619 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
1622 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1623 /// token has already been consumed.
1625 /// ::= '[' APSINTVAL 'x' Types ']'
1626 /// ::= '<' APSINTVAL 'x' Types '>'
1627 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
1628 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1629 Lex.getAPSIntVal().getBitWidth() > 64)
1630 return TokError("expected number in address space");
1632 LocTy SizeLoc = Lex.getLoc();
1633 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1636 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1639 LocTy TypeLoc = Lex.getLoc();
1641 if (ParseType(EltTy)) return true;
1643 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1644 "expected end of sequential type"))
1649 return Error(SizeLoc, "zero element vector is illegal");
1650 if ((unsigned)Size != Size)
1651 return Error(SizeLoc, "size too large for vector");
1652 if (!VectorType::isValidElementType(EltTy))
1653 return Error(TypeLoc,
1654 "vector element type must be fp, integer or a pointer to these types");
1655 Result = VectorType::get(EltTy, unsigned(Size));
1657 if (!ArrayType::isValidElementType(EltTy))
1658 return Error(TypeLoc, "invalid array element type");
1659 Result = ArrayType::get(EltTy, Size);
1664 //===----------------------------------------------------------------------===//
1665 // Function Semantic Analysis.
1666 //===----------------------------------------------------------------------===//
1668 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1670 : P(p), F(f), FunctionNumber(functionNumber) {
1672 // Insert unnamed arguments into the NumberedVals list.
1673 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1676 NumberedVals.push_back(AI);
1679 LLParser::PerFunctionState::~PerFunctionState() {
1680 // If there were any forward referenced non-basicblock values, delete them.
1681 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1682 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1683 if (!isa<BasicBlock>(I->second.first)) {
1684 I->second.first->replaceAllUsesWith(
1685 UndefValue::get(I->second.first->getType()));
1686 delete I->second.first;
1687 I->second.first = 0;
1690 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1691 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1692 if (!isa<BasicBlock>(I->second.first)) {
1693 I->second.first->replaceAllUsesWith(
1694 UndefValue::get(I->second.first->getType()));
1695 delete I->second.first;
1696 I->second.first = 0;
1700 bool LLParser::PerFunctionState::FinishFunction() {
1701 // Check to see if someone took the address of labels in this block.
1702 if (!P.ForwardRefBlockAddresses.empty()) {
1704 if (!F.getName().empty()) {
1705 FunctionID.Kind = ValID::t_GlobalName;
1706 FunctionID.StrVal = F.getName();
1708 FunctionID.Kind = ValID::t_GlobalID;
1709 FunctionID.UIntVal = FunctionNumber;
1712 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1713 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1714 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1715 // Resolve all these references.
1716 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1719 P.ForwardRefBlockAddresses.erase(FRBAI);
1723 if (!ForwardRefVals.empty())
1724 return P.Error(ForwardRefVals.begin()->second.second,
1725 "use of undefined value '%" + ForwardRefVals.begin()->first +
1727 if (!ForwardRefValIDs.empty())
1728 return P.Error(ForwardRefValIDs.begin()->second.second,
1729 "use of undefined value '%" +
1730 Twine(ForwardRefValIDs.begin()->first) + "'");
1735 /// GetVal - Get a value with the specified name or ID, creating a
1736 /// forward reference record if needed. This can return null if the value
1737 /// exists but does not have the right type.
1738 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1739 Type *Ty, LocTy Loc) {
1740 // Look this name up in the normal function symbol table.
1741 Value *Val = F.getValueSymbolTable().lookup(Name);
1743 // If this is a forward reference for the value, see if we already created a
1744 // forward ref record.
1746 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1747 I = ForwardRefVals.find(Name);
1748 if (I != ForwardRefVals.end())
1749 Val = I->second.first;
1752 // If we have the value in the symbol table or fwd-ref table, return it.
1754 if (Val->getType() == Ty) return Val;
1755 if (Ty->isLabelTy())
1756 P.Error(Loc, "'%" + Name + "' is not a basic block");
1758 P.Error(Loc, "'%" + Name + "' defined with type '" +
1759 getTypeString(Val->getType()) + "'");
1763 // Don't make placeholders with invalid type.
1764 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
1765 P.Error(Loc, "invalid use of a non-first-class type");
1769 // Otherwise, create a new forward reference for this value and remember it.
1771 if (Ty->isLabelTy())
1772 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1774 FwdVal = new Argument(Ty, Name);
1776 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1780 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
1782 // Look this name up in the normal function symbol table.
1783 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1785 // If this is a forward reference for the value, see if we already created a
1786 // forward ref record.
1788 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1789 I = ForwardRefValIDs.find(ID);
1790 if (I != ForwardRefValIDs.end())
1791 Val = I->second.first;
1794 // If we have the value in the symbol table or fwd-ref table, return it.
1796 if (Val->getType() == Ty) return Val;
1797 if (Ty->isLabelTy())
1798 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
1800 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
1801 getTypeString(Val->getType()) + "'");
1805 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
1806 P.Error(Loc, "invalid use of a non-first-class type");
1810 // Otherwise, create a new forward reference for this value and remember it.
1812 if (Ty->isLabelTy())
1813 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1815 FwdVal = new Argument(Ty);
1817 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1821 /// SetInstName - After an instruction is parsed and inserted into its
1822 /// basic block, this installs its name.
1823 bool LLParser::PerFunctionState::SetInstName(int NameID,
1824 const std::string &NameStr,
1825 LocTy NameLoc, Instruction *Inst) {
1826 // If this instruction has void type, it cannot have a name or ID specified.
1827 if (Inst->getType()->isVoidTy()) {
1828 if (NameID != -1 || !NameStr.empty())
1829 return P.Error(NameLoc, "instructions returning void cannot have a name");
1833 // If this was a numbered instruction, verify that the instruction is the
1834 // expected value and resolve any forward references.
1835 if (NameStr.empty()) {
1836 // If neither a name nor an ID was specified, just use the next ID.
1838 NameID = NumberedVals.size();
1840 if (unsigned(NameID) != NumberedVals.size())
1841 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1842 Twine(NumberedVals.size()) + "'");
1844 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1845 ForwardRefValIDs.find(NameID);
1846 if (FI != ForwardRefValIDs.end()) {
1847 if (FI->second.first->getType() != Inst->getType())
1848 return P.Error(NameLoc, "instruction forward referenced with type '" +
1849 getTypeString(FI->second.first->getType()) + "'");
1850 FI->second.first->replaceAllUsesWith(Inst);
1851 delete FI->second.first;
1852 ForwardRefValIDs.erase(FI);
1855 NumberedVals.push_back(Inst);
1859 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1860 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1861 FI = ForwardRefVals.find(NameStr);
1862 if (FI != ForwardRefVals.end()) {
1863 if (FI->second.first->getType() != Inst->getType())
1864 return P.Error(NameLoc, "instruction forward referenced with type '" +
1865 getTypeString(FI->second.first->getType()) + "'");
1866 FI->second.first->replaceAllUsesWith(Inst);
1867 delete FI->second.first;
1868 ForwardRefVals.erase(FI);
1871 // Set the name on the instruction.
1872 Inst->setName(NameStr);
1874 if (Inst->getName() != NameStr)
1875 return P.Error(NameLoc, "multiple definition of local value named '" +
1880 /// GetBB - Get a basic block with the specified name or ID, creating a
1881 /// forward reference record if needed.
1882 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1884 return cast_or_null<BasicBlock>(GetVal(Name,
1885 Type::getLabelTy(F.getContext()), Loc));
1888 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1889 return cast_or_null<BasicBlock>(GetVal(ID,
1890 Type::getLabelTy(F.getContext()), Loc));
1893 /// DefineBB - Define the specified basic block, which is either named or
1894 /// unnamed. If there is an error, this returns null otherwise it returns
1895 /// the block being defined.
1896 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1900 BB = GetBB(NumberedVals.size(), Loc);
1902 BB = GetBB(Name, Loc);
1903 if (BB == 0) return 0; // Already diagnosed error.
1905 // Move the block to the end of the function. Forward ref'd blocks are
1906 // inserted wherever they happen to be referenced.
1907 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1909 // Remove the block from forward ref sets.
1911 ForwardRefValIDs.erase(NumberedVals.size());
1912 NumberedVals.push_back(BB);
1914 // BB forward references are already in the function symbol table.
1915 ForwardRefVals.erase(Name);
1921 //===----------------------------------------------------------------------===//
1923 //===----------------------------------------------------------------------===//
1925 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1926 /// type implied. For example, if we parse "4" we don't know what integer type
1927 /// it has. The value will later be combined with its type and checked for
1928 /// sanity. PFS is used to convert function-local operands of metadata (since
1929 /// metadata operands are not just parsed here but also converted to values).
1930 /// PFS can be null when we are not parsing metadata values inside a function.
1931 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
1932 ID.Loc = Lex.getLoc();
1933 switch (Lex.getKind()) {
1934 default: return TokError("expected value token");
1935 case lltok::GlobalID: // @42
1936 ID.UIntVal = Lex.getUIntVal();
1937 ID.Kind = ValID::t_GlobalID;
1939 case lltok::GlobalVar: // @foo
1940 ID.StrVal = Lex.getStrVal();
1941 ID.Kind = ValID::t_GlobalName;
1943 case lltok::LocalVarID: // %42
1944 ID.UIntVal = Lex.getUIntVal();
1945 ID.Kind = ValID::t_LocalID;
1947 case lltok::LocalVar: // %foo
1948 ID.StrVal = Lex.getStrVal();
1949 ID.Kind = ValID::t_LocalName;
1951 case lltok::exclaim: // !42, !{...}, or !"foo"
1952 return ParseMetadataValue(ID, PFS);
1954 ID.APSIntVal = Lex.getAPSIntVal();
1955 ID.Kind = ValID::t_APSInt;
1957 case lltok::APFloat:
1958 ID.APFloatVal = Lex.getAPFloatVal();
1959 ID.Kind = ValID::t_APFloat;
1961 case lltok::kw_true:
1962 ID.ConstantVal = ConstantInt::getTrue(Context);
1963 ID.Kind = ValID::t_Constant;
1965 case lltok::kw_false:
1966 ID.ConstantVal = ConstantInt::getFalse(Context);
1967 ID.Kind = ValID::t_Constant;
1969 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
1970 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
1971 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
1973 case lltok::lbrace: {
1974 // ValID ::= '{' ConstVector '}'
1976 SmallVector<Constant*, 16> Elts;
1977 if (ParseGlobalValueVector(Elts) ||
1978 ParseToken(lltok::rbrace, "expected end of struct constant"))
1981 ID.ConstantStructElts = new Constant*[Elts.size()];
1982 ID.UIntVal = Elts.size();
1983 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
1984 ID.Kind = ValID::t_ConstantStruct;
1988 // ValID ::= '<' ConstVector '>' --> Vector.
1989 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
1991 bool isPackedStruct = EatIfPresent(lltok::lbrace);
1993 SmallVector<Constant*, 16> Elts;
1994 LocTy FirstEltLoc = Lex.getLoc();
1995 if (ParseGlobalValueVector(Elts) ||
1997 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
1998 ParseToken(lltok::greater, "expected end of constant"))
2001 if (isPackedStruct) {
2002 ID.ConstantStructElts = new Constant*[Elts.size()];
2003 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2004 ID.UIntVal = Elts.size();
2005 ID.Kind = ValID::t_PackedConstantStruct;
2010 return Error(ID.Loc, "constant vector must not be empty");
2012 if (!Elts[0]->getType()->isIntegerTy() &&
2013 !Elts[0]->getType()->isFloatingPointTy() &&
2014 !Elts[0]->getType()->isPointerTy())
2015 return Error(FirstEltLoc,
2016 "vector elements must have integer, pointer or floating point type");
2018 // Verify that all the vector elements have the same type.
2019 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2020 if (Elts[i]->getType() != Elts[0]->getType())
2021 return Error(FirstEltLoc,
2022 "vector element #" + Twine(i) +
2023 " is not of type '" + getTypeString(Elts[0]->getType()));
2025 ID.ConstantVal = ConstantVector::get(Elts);
2026 ID.Kind = ValID::t_Constant;
2029 case lltok::lsquare: { // Array Constant
2031 SmallVector<Constant*, 16> Elts;
2032 LocTy FirstEltLoc = Lex.getLoc();
2033 if (ParseGlobalValueVector(Elts) ||
2034 ParseToken(lltok::rsquare, "expected end of array constant"))
2037 // Handle empty element.
2039 // Use undef instead of an array because it's inconvenient to determine
2040 // the element type at this point, there being no elements to examine.
2041 ID.Kind = ValID::t_EmptyArray;
2045 if (!Elts[0]->getType()->isFirstClassType())
2046 return Error(FirstEltLoc, "invalid array element type: " +
2047 getTypeString(Elts[0]->getType()));
2049 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2051 // Verify all elements are correct type!
2052 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2053 if (Elts[i]->getType() != Elts[0]->getType())
2054 return Error(FirstEltLoc,
2055 "array element #" + Twine(i) +
2056 " is not of type '" + getTypeString(Elts[0]->getType()));
2059 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2060 ID.Kind = ValID::t_Constant;
2063 case lltok::kw_c: // c "foo"
2065 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2067 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2068 ID.Kind = ValID::t_Constant;
2071 case lltok::kw_asm: {
2072 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2073 bool HasSideEffect, AlignStack;
2075 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2076 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2077 ParseStringConstant(ID.StrVal) ||
2078 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2079 ParseToken(lltok::StringConstant, "expected constraint string"))
2081 ID.StrVal2 = Lex.getStrVal();
2082 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
2083 ID.Kind = ValID::t_InlineAsm;
2087 case lltok::kw_blockaddress: {
2088 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2092 LocTy FnLoc, LabelLoc;
2094 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2096 ParseToken(lltok::comma, "expected comma in block address expression")||
2097 ParseValID(Label) ||
2098 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2101 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2102 return Error(Fn.Loc, "expected function name in blockaddress");
2103 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2104 return Error(Label.Loc, "expected basic block name in blockaddress");
2106 // Make a global variable as a placeholder for this reference.
2107 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2108 false, GlobalValue::InternalLinkage,
2110 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2111 ID.ConstantVal = FwdRef;
2112 ID.Kind = ValID::t_Constant;
2116 case lltok::kw_trunc:
2117 case lltok::kw_zext:
2118 case lltok::kw_sext:
2119 case lltok::kw_fptrunc:
2120 case lltok::kw_fpext:
2121 case lltok::kw_bitcast:
2122 case lltok::kw_uitofp:
2123 case lltok::kw_sitofp:
2124 case lltok::kw_fptoui:
2125 case lltok::kw_fptosi:
2126 case lltok::kw_inttoptr:
2127 case lltok::kw_ptrtoint: {
2128 unsigned Opc = Lex.getUIntVal();
2132 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2133 ParseGlobalTypeAndValue(SrcVal) ||
2134 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2135 ParseType(DestTy) ||
2136 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2138 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2139 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2140 getTypeString(SrcVal->getType()) + "' to '" +
2141 getTypeString(DestTy) + "'");
2142 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2144 ID.Kind = ValID::t_Constant;
2147 case lltok::kw_extractvalue: {
2150 SmallVector<unsigned, 4> Indices;
2151 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2152 ParseGlobalTypeAndValue(Val) ||
2153 ParseIndexList(Indices) ||
2154 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2157 if (!Val->getType()->isAggregateType())
2158 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2159 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2160 return Error(ID.Loc, "invalid indices for extractvalue");
2161 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2162 ID.Kind = ValID::t_Constant;
2165 case lltok::kw_insertvalue: {
2167 Constant *Val0, *Val1;
2168 SmallVector<unsigned, 4> Indices;
2169 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2170 ParseGlobalTypeAndValue(Val0) ||
2171 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2172 ParseGlobalTypeAndValue(Val1) ||
2173 ParseIndexList(Indices) ||
2174 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2176 if (!Val0->getType()->isAggregateType())
2177 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2178 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2179 return Error(ID.Loc, "invalid indices for insertvalue");
2180 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2181 ID.Kind = ValID::t_Constant;
2184 case lltok::kw_icmp:
2185 case lltok::kw_fcmp: {
2186 unsigned PredVal, Opc = Lex.getUIntVal();
2187 Constant *Val0, *Val1;
2189 if (ParseCmpPredicate(PredVal, Opc) ||
2190 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2191 ParseGlobalTypeAndValue(Val0) ||
2192 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2193 ParseGlobalTypeAndValue(Val1) ||
2194 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2197 if (Val0->getType() != Val1->getType())
2198 return Error(ID.Loc, "compare operands must have the same type");
2200 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2202 if (Opc == Instruction::FCmp) {
2203 if (!Val0->getType()->isFPOrFPVectorTy())
2204 return Error(ID.Loc, "fcmp requires floating point operands");
2205 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2207 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2208 if (!Val0->getType()->isIntOrIntVectorTy() &&
2209 !Val0->getType()->getScalarType()->isPointerTy())
2210 return Error(ID.Loc, "icmp requires pointer or integer operands");
2211 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2213 ID.Kind = ValID::t_Constant;
2217 // Binary Operators.
2219 case lltok::kw_fadd:
2221 case lltok::kw_fsub:
2223 case lltok::kw_fmul:
2224 case lltok::kw_udiv:
2225 case lltok::kw_sdiv:
2226 case lltok::kw_fdiv:
2227 case lltok::kw_urem:
2228 case lltok::kw_srem:
2229 case lltok::kw_frem:
2231 case lltok::kw_lshr:
2232 case lltok::kw_ashr: {
2236 unsigned Opc = Lex.getUIntVal();
2237 Constant *Val0, *Val1;
2239 LocTy ModifierLoc = Lex.getLoc();
2240 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2241 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2242 if (EatIfPresent(lltok::kw_nuw))
2244 if (EatIfPresent(lltok::kw_nsw)) {
2246 if (EatIfPresent(lltok::kw_nuw))
2249 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2250 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2251 if (EatIfPresent(lltok::kw_exact))
2254 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2255 ParseGlobalTypeAndValue(Val0) ||
2256 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2257 ParseGlobalTypeAndValue(Val1) ||
2258 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2260 if (Val0->getType() != Val1->getType())
2261 return Error(ID.Loc, "operands of constexpr must have same type");
2262 if (!Val0->getType()->isIntOrIntVectorTy()) {
2264 return Error(ModifierLoc, "nuw only applies to integer operations");
2266 return Error(ModifierLoc, "nsw only applies to integer operations");
2268 // Check that the type is valid for the operator.
2270 case Instruction::Add:
2271 case Instruction::Sub:
2272 case Instruction::Mul:
2273 case Instruction::UDiv:
2274 case Instruction::SDiv:
2275 case Instruction::URem:
2276 case Instruction::SRem:
2277 case Instruction::Shl:
2278 case Instruction::AShr:
2279 case Instruction::LShr:
2280 if (!Val0->getType()->isIntOrIntVectorTy())
2281 return Error(ID.Loc, "constexpr requires integer operands");
2283 case Instruction::FAdd:
2284 case Instruction::FSub:
2285 case Instruction::FMul:
2286 case Instruction::FDiv:
2287 case Instruction::FRem:
2288 if (!Val0->getType()->isFPOrFPVectorTy())
2289 return Error(ID.Loc, "constexpr requires fp operands");
2291 default: llvm_unreachable("Unknown binary operator!");
2294 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2295 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2296 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2297 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2299 ID.Kind = ValID::t_Constant;
2303 // Logical Operations
2306 case lltok::kw_xor: {
2307 unsigned Opc = Lex.getUIntVal();
2308 Constant *Val0, *Val1;
2310 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2311 ParseGlobalTypeAndValue(Val0) ||
2312 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2313 ParseGlobalTypeAndValue(Val1) ||
2314 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2316 if (Val0->getType() != Val1->getType())
2317 return Error(ID.Loc, "operands of constexpr must have same type");
2318 if (!Val0->getType()->isIntOrIntVectorTy())
2319 return Error(ID.Loc,
2320 "constexpr requires integer or integer vector operands");
2321 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2322 ID.Kind = ValID::t_Constant;
2326 case lltok::kw_getelementptr:
2327 case lltok::kw_shufflevector:
2328 case lltok::kw_insertelement:
2329 case lltok::kw_extractelement:
2330 case lltok::kw_select: {
2331 unsigned Opc = Lex.getUIntVal();
2332 SmallVector<Constant*, 16> Elts;
2333 bool InBounds = false;
2335 if (Opc == Instruction::GetElementPtr)
2336 InBounds = EatIfPresent(lltok::kw_inbounds);
2337 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2338 ParseGlobalValueVector(Elts) ||
2339 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2342 if (Opc == Instruction::GetElementPtr) {
2343 if (Elts.size() == 0 ||
2344 !Elts[0]->getType()->getScalarType()->isPointerTy())
2345 return Error(ID.Loc, "getelementptr requires pointer operand");
2347 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2348 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2349 return Error(ID.Loc, "invalid indices for getelementptr");
2350 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2352 } else if (Opc == Instruction::Select) {
2353 if (Elts.size() != 3)
2354 return Error(ID.Loc, "expected three operands to select");
2355 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2357 return Error(ID.Loc, Reason);
2358 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2359 } else if (Opc == Instruction::ShuffleVector) {
2360 if (Elts.size() != 3)
2361 return Error(ID.Loc, "expected three operands to shufflevector");
2362 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2363 return Error(ID.Loc, "invalid operands to shufflevector");
2365 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2366 } else if (Opc == Instruction::ExtractElement) {
2367 if (Elts.size() != 2)
2368 return Error(ID.Loc, "expected two operands to extractelement");
2369 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2370 return Error(ID.Loc, "invalid extractelement operands");
2371 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2373 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2374 if (Elts.size() != 3)
2375 return Error(ID.Loc, "expected three operands to insertelement");
2376 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2377 return Error(ID.Loc, "invalid insertelement operands");
2379 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2382 ID.Kind = ValID::t_Constant;
2391 /// ParseGlobalValue - Parse a global value with the specified type.
2392 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2396 bool Parsed = ParseValID(ID) ||
2397 ConvertValIDToValue(Ty, ID, V, NULL);
2398 if (V && !(C = dyn_cast<Constant>(V)))
2399 return Error(ID.Loc, "global values must be constants");
2403 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2405 return ParseType(Ty) ||
2406 ParseGlobalValue(Ty, V);
2409 /// ParseGlobalValueVector
2411 /// ::= TypeAndValue (',' TypeAndValue)*
2412 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2414 if (Lex.getKind() == lltok::rbrace ||
2415 Lex.getKind() == lltok::rsquare ||
2416 Lex.getKind() == lltok::greater ||
2417 Lex.getKind() == lltok::rparen)
2421 if (ParseGlobalTypeAndValue(C)) return true;
2424 while (EatIfPresent(lltok::comma)) {
2425 if (ParseGlobalTypeAndValue(C)) return true;
2432 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2433 assert(Lex.getKind() == lltok::lbrace);
2436 SmallVector<Value*, 16> Elts;
2437 if (ParseMDNodeVector(Elts, PFS) ||
2438 ParseToken(lltok::rbrace, "expected end of metadata node"))
2441 ID.MDNodeVal = MDNode::get(Context, Elts);
2442 ID.Kind = ValID::t_MDNode;
2446 /// ParseMetadataValue
2450 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2451 assert(Lex.getKind() == lltok::exclaim);
2456 if (Lex.getKind() == lltok::lbrace)
2457 return ParseMetadataListValue(ID, PFS);
2459 // Standalone metadata reference
2461 if (Lex.getKind() == lltok::APSInt) {
2462 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2463 ID.Kind = ValID::t_MDNode;
2468 // ::= '!' STRINGCONSTANT
2469 if (ParseMDString(ID.MDStringVal)) return true;
2470 ID.Kind = ValID::t_MDString;
2475 //===----------------------------------------------------------------------===//
2476 // Function Parsing.
2477 //===----------------------------------------------------------------------===//
2479 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2480 PerFunctionState *PFS) {
2481 if (Ty->isFunctionTy())
2482 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2485 case ValID::t_LocalID:
2486 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2487 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2489 case ValID::t_LocalName:
2490 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2491 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2493 case ValID::t_InlineAsm: {
2494 PointerType *PTy = dyn_cast<PointerType>(Ty);
2496 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2497 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2498 return Error(ID.Loc, "invalid type for inline asm constraint string");
2499 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1, ID.UIntVal>>1);
2502 case ValID::t_MDNode:
2503 if (!Ty->isMetadataTy())
2504 return Error(ID.Loc, "metadata value must have metadata type");
2507 case ValID::t_MDString:
2508 if (!Ty->isMetadataTy())
2509 return Error(ID.Loc, "metadata value must have metadata type");
2512 case ValID::t_GlobalName:
2513 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2515 case ValID::t_GlobalID:
2516 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2518 case ValID::t_APSInt:
2519 if (!Ty->isIntegerTy())
2520 return Error(ID.Loc, "integer constant must have integer type");
2521 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2522 V = ConstantInt::get(Context, ID.APSIntVal);
2524 case ValID::t_APFloat:
2525 if (!Ty->isFloatingPointTy() ||
2526 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2527 return Error(ID.Loc, "floating point constant invalid for type");
2529 // The lexer has no type info, so builds all half, float, and double FP
2530 // constants as double. Fix this here. Long double does not need this.
2531 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
2534 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
2536 else if (Ty->isFloatTy())
2537 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2540 V = ConstantFP::get(Context, ID.APFloatVal);
2542 if (V->getType() != Ty)
2543 return Error(ID.Loc, "floating point constant does not have type '" +
2544 getTypeString(Ty) + "'");
2548 if (!Ty->isPointerTy())
2549 return Error(ID.Loc, "null must be a pointer type");
2550 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2552 case ValID::t_Undef:
2553 // FIXME: LabelTy should not be a first-class type.
2554 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2555 return Error(ID.Loc, "invalid type for undef constant");
2556 V = UndefValue::get(Ty);
2558 case ValID::t_EmptyArray:
2559 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2560 return Error(ID.Loc, "invalid empty array initializer");
2561 V = UndefValue::get(Ty);
2564 // FIXME: LabelTy should not be a first-class type.
2565 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2566 return Error(ID.Loc, "invalid type for null constant");
2567 V = Constant::getNullValue(Ty);
2569 case ValID::t_Constant:
2570 if (ID.ConstantVal->getType() != Ty)
2571 return Error(ID.Loc, "constant expression type mismatch");
2575 case ValID::t_ConstantStruct:
2576 case ValID::t_PackedConstantStruct:
2577 if (StructType *ST = dyn_cast<StructType>(Ty)) {
2578 if (ST->getNumElements() != ID.UIntVal)
2579 return Error(ID.Loc,
2580 "initializer with struct type has wrong # elements");
2581 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
2582 return Error(ID.Loc, "packed'ness of initializer and type don't match");
2584 // Verify that the elements are compatible with the structtype.
2585 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
2586 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
2587 return Error(ID.Loc, "element " + Twine(i) +
2588 " of struct initializer doesn't match struct element type");
2590 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
2593 return Error(ID.Loc, "constant expression type mismatch");
2596 llvm_unreachable("Invalid ValID");
2599 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
2602 return ParseValID(ID, PFS) ||
2603 ConvertValIDToValue(Ty, ID, V, PFS);
2606 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
2608 return ParseType(Ty) ||
2609 ParseValue(Ty, V, PFS);
2612 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2613 PerFunctionState &PFS) {
2616 if (ParseTypeAndValue(V, PFS)) return true;
2617 if (!isa<BasicBlock>(V))
2618 return Error(Loc, "expected a basic block");
2619 BB = cast<BasicBlock>(V);
2625 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2626 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2627 /// OptionalAlign OptGC
2628 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2629 // Parse the linkage.
2630 LocTy LinkageLoc = Lex.getLoc();
2633 unsigned Visibility;
2634 Attributes RetAttrs;
2637 LocTy RetTypeLoc = Lex.getLoc();
2638 if (ParseOptionalLinkage(Linkage) ||
2639 ParseOptionalVisibility(Visibility) ||
2640 ParseOptionalCallingConv(CC) ||
2641 ParseOptionalAttrs(RetAttrs, 1) ||
2642 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2645 // Verify that the linkage is ok.
2646 switch ((GlobalValue::LinkageTypes)Linkage) {
2647 case GlobalValue::ExternalLinkage:
2648 break; // always ok.
2649 case GlobalValue::DLLImportLinkage:
2650 case GlobalValue::ExternalWeakLinkage:
2652 return Error(LinkageLoc, "invalid linkage for function definition");
2654 case GlobalValue::PrivateLinkage:
2655 case GlobalValue::LinkerPrivateLinkage:
2656 case GlobalValue::LinkerPrivateWeakLinkage:
2657 case GlobalValue::InternalLinkage:
2658 case GlobalValue::AvailableExternallyLinkage:
2659 case GlobalValue::LinkOnceAnyLinkage:
2660 case GlobalValue::LinkOnceODRLinkage:
2661 case GlobalValue::LinkOnceODRAutoHideLinkage:
2662 case GlobalValue::WeakAnyLinkage:
2663 case GlobalValue::WeakODRLinkage:
2664 case GlobalValue::DLLExportLinkage:
2666 return Error(LinkageLoc, "invalid linkage for function declaration");
2668 case GlobalValue::AppendingLinkage:
2669 case GlobalValue::CommonLinkage:
2670 return Error(LinkageLoc, "invalid function linkage type");
2673 if (!FunctionType::isValidReturnType(RetType))
2674 return Error(RetTypeLoc, "invalid function return type");
2676 LocTy NameLoc = Lex.getLoc();
2678 std::string FunctionName;
2679 if (Lex.getKind() == lltok::GlobalVar) {
2680 FunctionName = Lex.getStrVal();
2681 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2682 unsigned NameID = Lex.getUIntVal();
2684 if (NameID != NumberedVals.size())
2685 return TokError("function expected to be numbered '%" +
2686 Twine(NumberedVals.size()) + "'");
2688 return TokError("expected function name");
2693 if (Lex.getKind() != lltok::lparen)
2694 return TokError("expected '(' in function argument list");
2696 SmallVector<ArgInfo, 8> ArgList;
2698 Attributes FuncAttrs;
2699 std::string Section;
2703 LocTy UnnamedAddrLoc;
2705 if (ParseArgumentList(ArgList, isVarArg) ||
2706 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
2708 ParseOptionalAttrs(FuncAttrs, 2) ||
2709 (EatIfPresent(lltok::kw_section) &&
2710 ParseStringConstant(Section)) ||
2711 ParseOptionalAlignment(Alignment) ||
2712 (EatIfPresent(lltok::kw_gc) &&
2713 ParseStringConstant(GC)))
2716 // If the alignment was parsed as an attribute, move to the alignment field.
2717 if (FuncAttrs & Attribute::Alignment) {
2718 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2719 FuncAttrs &= ~Attribute::Alignment;
2722 // Okay, if we got here, the function is syntactically valid. Convert types
2723 // and do semantic checks.
2724 std::vector<Type*> ParamTypeList;
2725 SmallVector<AttributeWithIndex, 8> Attrs;
2727 if (RetAttrs != Attribute::None)
2728 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2730 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2731 ParamTypeList.push_back(ArgList[i].Ty);
2732 if (ArgList[i].Attrs != Attribute::None)
2733 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2736 if (FuncAttrs != Attribute::None)
2737 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2739 AttrListPtr PAL = AttrListPtr::get(Attrs);
2741 if (PAL.paramHasAttr(1, Attribute::StructRet) && !RetType->isVoidTy())
2742 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2745 FunctionType::get(RetType, ParamTypeList, isVarArg);
2746 PointerType *PFT = PointerType::getUnqual(FT);
2749 if (!FunctionName.empty()) {
2750 // If this was a definition of a forward reference, remove the definition
2751 // from the forward reference table and fill in the forward ref.
2752 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2753 ForwardRefVals.find(FunctionName);
2754 if (FRVI != ForwardRefVals.end()) {
2755 Fn = M->getFunction(FunctionName);
2756 if (Fn->getType() != PFT)
2757 return Error(FRVI->second.second, "invalid forward reference to "
2758 "function '" + FunctionName + "' with wrong type!");
2760 ForwardRefVals.erase(FRVI);
2761 } else if ((Fn = M->getFunction(FunctionName))) {
2762 // Reject redefinitions.
2763 return Error(NameLoc, "invalid redefinition of function '" +
2764 FunctionName + "'");
2765 } else if (M->getNamedValue(FunctionName)) {
2766 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2770 // If this is a definition of a forward referenced function, make sure the
2772 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2773 = ForwardRefValIDs.find(NumberedVals.size());
2774 if (I != ForwardRefValIDs.end()) {
2775 Fn = cast<Function>(I->second.first);
2776 if (Fn->getType() != PFT)
2777 return Error(NameLoc, "type of definition and forward reference of '@" +
2778 Twine(NumberedVals.size()) + "' disagree");
2779 ForwardRefValIDs.erase(I);
2784 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2785 else // Move the forward-reference to the correct spot in the module.
2786 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2788 if (FunctionName.empty())
2789 NumberedVals.push_back(Fn);
2791 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2792 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2793 Fn->setCallingConv(CC);
2794 Fn->setAttributes(PAL);
2795 Fn->setUnnamedAddr(UnnamedAddr);
2796 Fn->setAlignment(Alignment);
2797 Fn->setSection(Section);
2798 if (!GC.empty()) Fn->setGC(GC.c_str());
2800 // Add all of the arguments we parsed to the function.
2801 Function::arg_iterator ArgIt = Fn->arg_begin();
2802 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2803 // If the argument has a name, insert it into the argument symbol table.
2804 if (ArgList[i].Name.empty()) continue;
2806 // Set the name, if it conflicted, it will be auto-renamed.
2807 ArgIt->setName(ArgList[i].Name);
2809 if (ArgIt->getName() != ArgList[i].Name)
2810 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2811 ArgList[i].Name + "'");
2818 /// ParseFunctionBody
2819 /// ::= '{' BasicBlock+ '}'
2821 bool LLParser::ParseFunctionBody(Function &Fn) {
2822 if (Lex.getKind() != lltok::lbrace)
2823 return TokError("expected '{' in function body");
2824 Lex.Lex(); // eat the {.
2826 int FunctionNumber = -1;
2827 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2829 PerFunctionState PFS(*this, Fn, FunctionNumber);
2831 // We need at least one basic block.
2832 if (Lex.getKind() == lltok::rbrace)
2833 return TokError("function body requires at least one basic block");
2835 while (Lex.getKind() != lltok::rbrace)
2836 if (ParseBasicBlock(PFS)) return true;
2841 // Verify function is ok.
2842 return PFS.FinishFunction();
2846 /// ::= LabelStr? Instruction*
2847 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2848 // If this basic block starts out with a name, remember it.
2850 LocTy NameLoc = Lex.getLoc();
2851 if (Lex.getKind() == lltok::LabelStr) {
2852 Name = Lex.getStrVal();
2856 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2857 if (BB == 0) return true;
2859 std::string NameStr;
2861 // Parse the instructions in this block until we get a terminator.
2863 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2865 // This instruction may have three possibilities for a name: a) none
2866 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2867 LocTy NameLoc = Lex.getLoc();
2871 if (Lex.getKind() == lltok::LocalVarID) {
2872 NameID = Lex.getUIntVal();
2874 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2876 } else if (Lex.getKind() == lltok::LocalVar) {
2877 NameStr = Lex.getStrVal();
2879 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2883 switch (ParseInstruction(Inst, BB, PFS)) {
2884 default: llvm_unreachable("Unknown ParseInstruction result!");
2885 case InstError: return true;
2887 BB->getInstList().push_back(Inst);
2889 // With a normal result, we check to see if the instruction is followed by
2890 // a comma and metadata.
2891 if (EatIfPresent(lltok::comma))
2892 if (ParseInstructionMetadata(Inst, &PFS))
2895 case InstExtraComma:
2896 BB->getInstList().push_back(Inst);
2898 // If the instruction parser ate an extra comma at the end of it, it
2899 // *must* be followed by metadata.
2900 if (ParseInstructionMetadata(Inst, &PFS))
2905 // Set the name on the instruction.
2906 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2907 } while (!isa<TerminatorInst>(Inst));
2912 //===----------------------------------------------------------------------===//
2913 // Instruction Parsing.
2914 //===----------------------------------------------------------------------===//
2916 /// ParseInstruction - Parse one of the many different instructions.
2918 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2919 PerFunctionState &PFS) {
2920 lltok::Kind Token = Lex.getKind();
2921 if (Token == lltok::Eof)
2922 return TokError("found end of file when expecting more instructions");
2923 LocTy Loc = Lex.getLoc();
2924 unsigned KeywordVal = Lex.getUIntVal();
2925 Lex.Lex(); // Eat the keyword.
2928 default: return Error(Loc, "expected instruction opcode");
2929 // Terminator Instructions.
2930 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
2931 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
2932 case lltok::kw_br: return ParseBr(Inst, PFS);
2933 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
2934 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
2935 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
2936 case lltok::kw_resume: return ParseResume(Inst, PFS);
2937 // Binary Operators.
2941 case lltok::kw_shl: {
2942 bool NUW = EatIfPresent(lltok::kw_nuw);
2943 bool NSW = EatIfPresent(lltok::kw_nsw);
2944 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
2946 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
2948 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
2949 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
2952 case lltok::kw_fadd:
2953 case lltok::kw_fsub:
2954 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2956 case lltok::kw_sdiv:
2957 case lltok::kw_udiv:
2958 case lltok::kw_lshr:
2959 case lltok::kw_ashr: {
2960 bool Exact = EatIfPresent(lltok::kw_exact);
2962 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
2963 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
2967 case lltok::kw_urem:
2968 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
2969 case lltok::kw_fdiv:
2970 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2973 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
2974 case lltok::kw_icmp:
2975 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
2977 case lltok::kw_trunc:
2978 case lltok::kw_zext:
2979 case lltok::kw_sext:
2980 case lltok::kw_fptrunc:
2981 case lltok::kw_fpext:
2982 case lltok::kw_bitcast:
2983 case lltok::kw_uitofp:
2984 case lltok::kw_sitofp:
2985 case lltok::kw_fptoui:
2986 case lltok::kw_fptosi:
2987 case lltok::kw_inttoptr:
2988 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
2990 case lltok::kw_select: return ParseSelect(Inst, PFS);
2991 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
2992 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
2993 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
2994 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
2995 case lltok::kw_phi: return ParsePHI(Inst, PFS);
2996 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
2997 case lltok::kw_call: return ParseCall(Inst, PFS, false);
2998 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3000 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3001 case lltok::kw_load: return ParseLoad(Inst, PFS);
3002 case lltok::kw_store: return ParseStore(Inst, PFS);
3003 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3004 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3005 case lltok::kw_fence: return ParseFence(Inst, PFS);
3006 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3007 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3008 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3012 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3013 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3014 if (Opc == Instruction::FCmp) {
3015 switch (Lex.getKind()) {
3016 default: TokError("expected fcmp predicate (e.g. 'oeq')");
3017 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3018 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3019 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3020 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3021 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3022 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3023 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3024 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3025 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3026 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3027 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3028 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3029 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3030 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3031 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3032 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3035 switch (Lex.getKind()) {
3036 default: TokError("expected icmp predicate (e.g. 'eq')");
3037 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3038 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3039 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3040 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3041 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3042 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3043 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3044 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3045 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3046 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3053 //===----------------------------------------------------------------------===//
3054 // Terminator Instructions.
3055 //===----------------------------------------------------------------------===//
3057 /// ParseRet - Parse a return instruction.
3058 /// ::= 'ret' void (',' !dbg, !1)*
3059 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3060 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3061 PerFunctionState &PFS) {
3062 SMLoc TypeLoc = Lex.getLoc();
3064 if (ParseType(Ty, true /*void allowed*/)) return true;
3066 Type *ResType = PFS.getFunction().getReturnType();
3068 if (Ty->isVoidTy()) {
3069 if (!ResType->isVoidTy())
3070 return Error(TypeLoc, "value doesn't match function result type '" +
3071 getTypeString(ResType) + "'");
3073 Inst = ReturnInst::Create(Context);
3078 if (ParseValue(Ty, RV, PFS)) return true;
3080 if (ResType != RV->getType())
3081 return Error(TypeLoc, "value doesn't match function result type '" +
3082 getTypeString(ResType) + "'");
3084 Inst = ReturnInst::Create(Context, RV);
3090 /// ::= 'br' TypeAndValue
3091 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3092 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3095 BasicBlock *Op1, *Op2;
3096 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3098 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3099 Inst = BranchInst::Create(BB);
3103 if (Op0->getType() != Type::getInt1Ty(Context))
3104 return Error(Loc, "branch condition must have 'i1' type");
3106 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3107 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3108 ParseToken(lltok::comma, "expected ',' after true destination") ||
3109 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3112 Inst = BranchInst::Create(Op1, Op2, Op0);
3118 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3120 /// ::= (TypeAndValue ',' TypeAndValue)*
3121 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3122 LocTy CondLoc, BBLoc;
3124 BasicBlock *DefaultBB;
3125 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3126 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3127 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3128 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3131 if (!Cond->getType()->isIntegerTy())
3132 return Error(CondLoc, "switch condition must have integer type");
3134 // Parse the jump table pairs.
3135 SmallPtrSet<Value*, 32> SeenCases;
3136 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3137 while (Lex.getKind() != lltok::rsquare) {
3141 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3142 ParseToken(lltok::comma, "expected ',' after case value") ||
3143 ParseTypeAndBasicBlock(DestBB, PFS))
3146 if (!SeenCases.insert(Constant))
3147 return Error(CondLoc, "duplicate case value in switch");
3148 if (!isa<ConstantInt>(Constant))
3149 return Error(CondLoc, "case value is not a constant integer");
3151 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3154 Lex.Lex(); // Eat the ']'.
3156 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3157 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3158 SI->addCase(Table[i].first, Table[i].second);
3165 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3166 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3169 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3170 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3171 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3174 if (!Address->getType()->isPointerTy())
3175 return Error(AddrLoc, "indirectbr address must have pointer type");
3177 // Parse the destination list.
3178 SmallVector<BasicBlock*, 16> DestList;
3180 if (Lex.getKind() != lltok::rsquare) {
3182 if (ParseTypeAndBasicBlock(DestBB, PFS))
3184 DestList.push_back(DestBB);
3186 while (EatIfPresent(lltok::comma)) {
3187 if (ParseTypeAndBasicBlock(DestBB, PFS))
3189 DestList.push_back(DestBB);
3193 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3196 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3197 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3198 IBI->addDestination(DestList[i]);
3205 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3206 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3207 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3208 LocTy CallLoc = Lex.getLoc();
3209 Attributes RetAttrs, FnAttrs;
3214 SmallVector<ParamInfo, 16> ArgList;
3216 BasicBlock *NormalBB, *UnwindBB;
3217 if (ParseOptionalCallingConv(CC) ||
3218 ParseOptionalAttrs(RetAttrs, 1) ||
3219 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3220 ParseValID(CalleeID) ||
3221 ParseParameterList(ArgList, PFS) ||
3222 ParseOptionalAttrs(FnAttrs, 2) ||
3223 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3224 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3225 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3226 ParseTypeAndBasicBlock(UnwindBB, PFS))
3229 // If RetType is a non-function pointer type, then this is the short syntax
3230 // for the call, which means that RetType is just the return type. Infer the
3231 // rest of the function argument types from the arguments that are present.
3232 PointerType *PFTy = 0;
3233 FunctionType *Ty = 0;
3234 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3235 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3236 // Pull out the types of all of the arguments...
3237 std::vector<Type*> ParamTypes;
3238 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3239 ParamTypes.push_back(ArgList[i].V->getType());
3241 if (!FunctionType::isValidReturnType(RetType))
3242 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3244 Ty = FunctionType::get(RetType, ParamTypes, false);
3245 PFTy = PointerType::getUnqual(Ty);
3248 // Look up the callee.
3250 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3252 // Set up the Attributes for the function.
3253 SmallVector<AttributeWithIndex, 8> Attrs;
3254 if (RetAttrs != Attribute::None)
3255 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3257 SmallVector<Value*, 8> Args;
3259 // Loop through FunctionType's arguments and ensure they are specified
3260 // correctly. Also, gather any parameter attributes.
3261 FunctionType::param_iterator I = Ty->param_begin();
3262 FunctionType::param_iterator E = Ty->param_end();
3263 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3264 Type *ExpectedTy = 0;
3267 } else if (!Ty->isVarArg()) {
3268 return Error(ArgList[i].Loc, "too many arguments specified");
3271 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3272 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3273 getTypeString(ExpectedTy) + "'");
3274 Args.push_back(ArgList[i].V);
3275 if (ArgList[i].Attrs != Attribute::None)
3276 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3280 return Error(CallLoc, "not enough parameters specified for call");
3282 if (FnAttrs != Attribute::None)
3283 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3285 // Finish off the Attributes and check them
3286 AttrListPtr PAL = AttrListPtr::get(Attrs);
3288 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3289 II->setCallingConv(CC);
3290 II->setAttributes(PAL);
3296 /// ::= 'resume' TypeAndValue
3297 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3298 Value *Exn; LocTy ExnLoc;
3299 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3302 ResumeInst *RI = ResumeInst::Create(Exn);
3307 //===----------------------------------------------------------------------===//
3308 // Binary Operators.
3309 //===----------------------------------------------------------------------===//
3312 /// ::= ArithmeticOps TypeAndValue ',' Value
3314 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3315 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3316 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3317 unsigned Opc, unsigned OperandType) {
3318 LocTy Loc; Value *LHS, *RHS;
3319 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3320 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3321 ParseValue(LHS->getType(), RHS, PFS))
3325 switch (OperandType) {
3326 default: llvm_unreachable("Unknown operand type!");
3327 case 0: // int or FP.
3328 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3329 LHS->getType()->isFPOrFPVectorTy();
3331 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3332 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3336 return Error(Loc, "invalid operand type for instruction");
3338 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3343 /// ::= ArithmeticOps TypeAndValue ',' Value {
3344 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3346 LocTy Loc; Value *LHS, *RHS;
3347 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3348 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3349 ParseValue(LHS->getType(), RHS, PFS))
3352 if (!LHS->getType()->isIntOrIntVectorTy())
3353 return Error(Loc,"instruction requires integer or integer vector operands");
3355 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3361 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3362 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3363 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3365 // Parse the integer/fp comparison predicate.
3369 if (ParseCmpPredicate(Pred, Opc) ||
3370 ParseTypeAndValue(LHS, Loc, PFS) ||
3371 ParseToken(lltok::comma, "expected ',' after compare value") ||
3372 ParseValue(LHS->getType(), RHS, PFS))
3375 if (Opc == Instruction::FCmp) {
3376 if (!LHS->getType()->isFPOrFPVectorTy())
3377 return Error(Loc, "fcmp requires floating point operands");
3378 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3380 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3381 if (!LHS->getType()->isIntOrIntVectorTy() &&
3382 !LHS->getType()->getScalarType()->isPointerTy())
3383 return Error(Loc, "icmp requires integer operands");
3384 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3389 //===----------------------------------------------------------------------===//
3390 // Other Instructions.
3391 //===----------------------------------------------------------------------===//
3395 /// ::= CastOpc TypeAndValue 'to' Type
3396 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3401 if (ParseTypeAndValue(Op, Loc, PFS) ||
3402 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3406 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3407 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3408 return Error(Loc, "invalid cast opcode for cast from '" +
3409 getTypeString(Op->getType()) + "' to '" +
3410 getTypeString(DestTy) + "'");
3412 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3417 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3418 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3420 Value *Op0, *Op1, *Op2;
3421 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3422 ParseToken(lltok::comma, "expected ',' after select condition") ||
3423 ParseTypeAndValue(Op1, PFS) ||
3424 ParseToken(lltok::comma, "expected ',' after select value") ||
3425 ParseTypeAndValue(Op2, PFS))
3428 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3429 return Error(Loc, Reason);
3431 Inst = SelectInst::Create(Op0, Op1, Op2);
3436 /// ::= 'va_arg' TypeAndValue ',' Type
3437 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3441 if (ParseTypeAndValue(Op, PFS) ||
3442 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3443 ParseType(EltTy, TypeLoc))
3446 if (!EltTy->isFirstClassType())
3447 return Error(TypeLoc, "va_arg requires operand with first class type");
3449 Inst = new VAArgInst(Op, EltTy);
3453 /// ParseExtractElement
3454 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3455 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3458 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3459 ParseToken(lltok::comma, "expected ',' after extract value") ||
3460 ParseTypeAndValue(Op1, PFS))
3463 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3464 return Error(Loc, "invalid extractelement operands");
3466 Inst = ExtractElementInst::Create(Op0, Op1);
3470 /// ParseInsertElement
3471 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3472 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3474 Value *Op0, *Op1, *Op2;
3475 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3476 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3477 ParseTypeAndValue(Op1, PFS) ||
3478 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3479 ParseTypeAndValue(Op2, PFS))
3482 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3483 return Error(Loc, "invalid insertelement operands");
3485 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3489 /// ParseShuffleVector
3490 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3491 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3493 Value *Op0, *Op1, *Op2;
3494 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3495 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3496 ParseTypeAndValue(Op1, PFS) ||
3497 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3498 ParseTypeAndValue(Op2, PFS))
3501 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3502 return Error(Loc, "invalid shufflevector operands");
3504 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3509 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3510 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3511 Type *Ty = 0; LocTy TypeLoc;
3514 if (ParseType(Ty, TypeLoc) ||
3515 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3516 ParseValue(Ty, Op0, PFS) ||
3517 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3518 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3519 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3522 bool AteExtraComma = false;
3523 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3525 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3527 if (!EatIfPresent(lltok::comma))
3530 if (Lex.getKind() == lltok::MetadataVar) {
3531 AteExtraComma = true;
3535 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3536 ParseValue(Ty, Op0, PFS) ||
3537 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3538 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3539 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3543 if (!Ty->isFirstClassType())
3544 return Error(TypeLoc, "phi node must have first class type");
3546 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
3547 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3548 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3550 return AteExtraComma ? InstExtraComma : InstNormal;
3554 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
3556 /// ::= 'catch' TypeAndValue
3558 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
3559 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
3560 Type *Ty = 0; LocTy TyLoc;
3561 Value *PersFn; LocTy PersFnLoc;
3563 if (ParseType(Ty, TyLoc) ||
3564 ParseToken(lltok::kw_personality, "expected 'personality'") ||
3565 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
3568 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
3569 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
3571 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
3572 LandingPadInst::ClauseType CT;
3573 if (EatIfPresent(lltok::kw_catch))
3574 CT = LandingPadInst::Catch;
3575 else if (EatIfPresent(lltok::kw_filter))
3576 CT = LandingPadInst::Filter;
3578 return TokError("expected 'catch' or 'filter' clause type");
3580 Value *V; LocTy VLoc;
3581 if (ParseTypeAndValue(V, VLoc, PFS)) {
3586 // A 'catch' type expects a non-array constant. A filter clause expects an
3588 if (CT == LandingPadInst::Catch) {
3589 if (isa<ArrayType>(V->getType()))
3590 Error(VLoc, "'catch' clause has an invalid type");
3592 if (!isa<ArrayType>(V->getType()))
3593 Error(VLoc, "'filter' clause has an invalid type");
3604 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3605 /// ParameterList OptionalAttrs
3606 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3608 Attributes RetAttrs, FnAttrs;
3613 SmallVector<ParamInfo, 16> ArgList;
3614 LocTy CallLoc = Lex.getLoc();
3616 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3617 ParseOptionalCallingConv(CC) ||
3618 ParseOptionalAttrs(RetAttrs, 1) ||
3619 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3620 ParseValID(CalleeID) ||
3621 ParseParameterList(ArgList, PFS) ||
3622 ParseOptionalAttrs(FnAttrs, 2))
3625 // If RetType is a non-function pointer type, then this is the short syntax
3626 // for the call, which means that RetType is just the return type. Infer the
3627 // rest of the function argument types from the arguments that are present.
3628 PointerType *PFTy = 0;
3629 FunctionType *Ty = 0;
3630 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3631 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3632 // Pull out the types of all of the arguments...
3633 std::vector<Type*> ParamTypes;
3634 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3635 ParamTypes.push_back(ArgList[i].V->getType());
3637 if (!FunctionType::isValidReturnType(RetType))
3638 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3640 Ty = FunctionType::get(RetType, ParamTypes, false);
3641 PFTy = PointerType::getUnqual(Ty);
3644 // Look up the callee.
3646 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3648 // Set up the Attributes for the function.
3649 SmallVector<AttributeWithIndex, 8> Attrs;
3650 if (RetAttrs != Attribute::None)
3651 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3653 SmallVector<Value*, 8> Args;
3655 // Loop through FunctionType's arguments and ensure they are specified
3656 // correctly. Also, gather any parameter attributes.
3657 FunctionType::param_iterator I = Ty->param_begin();
3658 FunctionType::param_iterator E = Ty->param_end();
3659 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3660 Type *ExpectedTy = 0;
3663 } else if (!Ty->isVarArg()) {
3664 return Error(ArgList[i].Loc, "too many arguments specified");
3667 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3668 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3669 getTypeString(ExpectedTy) + "'");
3670 Args.push_back(ArgList[i].V);
3671 if (ArgList[i].Attrs != Attribute::None)
3672 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3676 return Error(CallLoc, "not enough parameters specified for call");
3678 if (FnAttrs != Attribute::None)
3679 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3681 // Finish off the Attributes and check them
3682 AttrListPtr PAL = AttrListPtr::get(Attrs);
3684 CallInst *CI = CallInst::Create(Callee, Args);
3685 CI->setTailCall(isTail);
3686 CI->setCallingConv(CC);
3687 CI->setAttributes(PAL);
3692 //===----------------------------------------------------------------------===//
3693 // Memory Instructions.
3694 //===----------------------------------------------------------------------===//
3697 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3698 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
3701 unsigned Alignment = 0;
3703 if (ParseType(Ty)) return true;
3705 bool AteExtraComma = false;
3706 if (EatIfPresent(lltok::comma)) {
3707 if (Lex.getKind() == lltok::kw_align) {
3708 if (ParseOptionalAlignment(Alignment)) return true;
3709 } else if (Lex.getKind() == lltok::MetadataVar) {
3710 AteExtraComma = true;
3712 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3713 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3718 if (Size && !Size->getType()->isIntegerTy())
3719 return Error(SizeLoc, "element count must have integer type");
3721 Inst = new AllocaInst(Ty, Size, Alignment);
3722 return AteExtraComma ? InstExtraComma : InstNormal;
3726 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
3727 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
3728 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
3729 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
3730 Value *Val; LocTy Loc;
3731 unsigned Alignment = 0;
3732 bool AteExtraComma = false;
3733 bool isAtomic = false;
3734 AtomicOrdering Ordering = NotAtomic;
3735 SynchronizationScope Scope = CrossThread;
3737 if (Lex.getKind() == lltok::kw_atomic) {
3742 bool isVolatile = false;
3743 if (Lex.getKind() == lltok::kw_volatile) {
3748 if (ParseTypeAndValue(Val, Loc, PFS) ||
3749 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
3750 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3753 if (!Val->getType()->isPointerTy() ||
3754 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3755 return Error(Loc, "load operand must be a pointer to a first class type");
3756 if (isAtomic && !Alignment)
3757 return Error(Loc, "atomic load must have explicit non-zero alignment");
3758 if (Ordering == Release || Ordering == AcquireRelease)
3759 return Error(Loc, "atomic load cannot use Release ordering");
3761 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
3762 return AteExtraComma ? InstExtraComma : InstNormal;
3767 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3768 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
3769 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
3770 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
3771 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3772 unsigned Alignment = 0;
3773 bool AteExtraComma = false;
3774 bool isAtomic = false;
3775 AtomicOrdering Ordering = NotAtomic;
3776 SynchronizationScope Scope = CrossThread;
3778 if (Lex.getKind() == lltok::kw_atomic) {
3783 bool isVolatile = false;
3784 if (Lex.getKind() == lltok::kw_volatile) {
3789 if (ParseTypeAndValue(Val, Loc, PFS) ||
3790 ParseToken(lltok::comma, "expected ',' after store operand") ||
3791 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3792 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
3793 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3796 if (!Ptr->getType()->isPointerTy())
3797 return Error(PtrLoc, "store operand must be a pointer");
3798 if (!Val->getType()->isFirstClassType())
3799 return Error(Loc, "store operand must be a first class value");
3800 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3801 return Error(Loc, "stored value and pointer type do not match");
3802 if (isAtomic && !Alignment)
3803 return Error(Loc, "atomic store must have explicit non-zero alignment");
3804 if (Ordering == Acquire || Ordering == AcquireRelease)
3805 return Error(Loc, "atomic store cannot use Acquire ordering");
3807 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
3808 return AteExtraComma ? InstExtraComma : InstNormal;
3812 /// ::= 'cmpxchg' 'volatile'? TypeAndValue ',' TypeAndValue ',' TypeAndValue
3813 /// 'singlethread'? AtomicOrdering
3814 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
3815 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
3816 bool AteExtraComma = false;
3817 AtomicOrdering Ordering = NotAtomic;
3818 SynchronizationScope Scope = CrossThread;
3819 bool isVolatile = false;
3821 if (EatIfPresent(lltok::kw_volatile))
3824 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3825 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
3826 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
3827 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
3828 ParseTypeAndValue(New, NewLoc, PFS) ||
3829 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
3832 if (Ordering == Unordered)
3833 return TokError("cmpxchg cannot be unordered");
3834 if (!Ptr->getType()->isPointerTy())
3835 return Error(PtrLoc, "cmpxchg operand must be a pointer");
3836 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
3837 return Error(CmpLoc, "compare value and pointer type do not match");
3838 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
3839 return Error(NewLoc, "new value and pointer type do not match");
3840 if (!New->getType()->isIntegerTy())
3841 return Error(NewLoc, "cmpxchg operand must be an integer");
3842 unsigned Size = New->getType()->getPrimitiveSizeInBits();
3843 if (Size < 8 || (Size & (Size - 1)))
3844 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
3847 AtomicCmpXchgInst *CXI =
3848 new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, Scope);
3849 CXI->setVolatile(isVolatile);
3851 return AteExtraComma ? InstExtraComma : InstNormal;
3855 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
3856 /// 'singlethread'? AtomicOrdering
3857 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
3858 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
3859 bool AteExtraComma = false;
3860 AtomicOrdering Ordering = NotAtomic;
3861 SynchronizationScope Scope = CrossThread;
3862 bool isVolatile = false;
3863 AtomicRMWInst::BinOp Operation;
3865 if (EatIfPresent(lltok::kw_volatile))
3868 switch (Lex.getKind()) {
3869 default: return TokError("expected binary operation in atomicrmw");
3870 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
3871 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
3872 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
3873 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
3874 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
3875 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
3876 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
3877 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
3878 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
3879 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
3880 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
3882 Lex.Lex(); // Eat the operation.
3884 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3885 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
3886 ParseTypeAndValue(Val, ValLoc, PFS) ||
3887 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
3890 if (Ordering == Unordered)
3891 return TokError("atomicrmw cannot be unordered");
3892 if (!Ptr->getType()->isPointerTy())
3893 return Error(PtrLoc, "atomicrmw operand must be a pointer");
3894 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3895 return Error(ValLoc, "atomicrmw value and pointer type do not match");
3896 if (!Val->getType()->isIntegerTy())
3897 return Error(ValLoc, "atomicrmw operand must be an integer");
3898 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
3899 if (Size < 8 || (Size & (Size - 1)))
3900 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
3903 AtomicRMWInst *RMWI =
3904 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
3905 RMWI->setVolatile(isVolatile);
3907 return AteExtraComma ? InstExtraComma : InstNormal;
3911 /// ::= 'fence' 'singlethread'? AtomicOrdering
3912 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
3913 AtomicOrdering Ordering = NotAtomic;
3914 SynchronizationScope Scope = CrossThread;
3915 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
3918 if (Ordering == Unordered)
3919 return TokError("fence cannot be unordered");
3920 if (Ordering == Monotonic)
3921 return TokError("fence cannot be monotonic");
3923 Inst = new FenceInst(Context, Ordering, Scope);
3927 /// ParseGetElementPtr
3928 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3929 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3934 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3936 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3938 if (!Ptr->getType()->getScalarType()->isPointerTy())
3939 return Error(Loc, "base of getelementptr must be a pointer");
3941 SmallVector<Value*, 16> Indices;
3942 bool AteExtraComma = false;
3943 while (EatIfPresent(lltok::comma)) {
3944 if (Lex.getKind() == lltok::MetadataVar) {
3945 AteExtraComma = true;
3948 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3949 if (!Val->getType()->getScalarType()->isIntegerTy())
3950 return Error(EltLoc, "getelementptr index must be an integer");
3951 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
3952 return Error(EltLoc, "getelementptr index type missmatch");
3953 if (Val->getType()->isVectorTy()) {
3954 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
3955 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
3956 if (ValNumEl != PtrNumEl)
3957 return Error(EltLoc,
3958 "getelementptr vector index has a wrong number of elements");
3960 Indices.push_back(Val);
3963 if (Val && Val->getType()->isVectorTy() && Indices.size() != 1)
3964 return Error(EltLoc, "vector getelementptrs must have a single index");
3966 if (!GetElementPtrInst::getIndexedType(Ptr->getType(), Indices))
3967 return Error(Loc, "invalid getelementptr indices");
3968 Inst = GetElementPtrInst::Create(Ptr, Indices);
3970 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
3971 return AteExtraComma ? InstExtraComma : InstNormal;
3974 /// ParseExtractValue
3975 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3976 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3977 Value *Val; LocTy Loc;
3978 SmallVector<unsigned, 4> Indices;
3980 if (ParseTypeAndValue(Val, Loc, PFS) ||
3981 ParseIndexList(Indices, AteExtraComma))
3984 if (!Val->getType()->isAggregateType())
3985 return Error(Loc, "extractvalue operand must be aggregate type");
3987 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
3988 return Error(Loc, "invalid indices for extractvalue");
3989 Inst = ExtractValueInst::Create(Val, Indices);
3990 return AteExtraComma ? InstExtraComma : InstNormal;
3993 /// ParseInsertValue
3994 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3995 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3996 Value *Val0, *Val1; LocTy Loc0, Loc1;
3997 SmallVector<unsigned, 4> Indices;
3999 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4000 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4001 ParseTypeAndValue(Val1, Loc1, PFS) ||
4002 ParseIndexList(Indices, AteExtraComma))
4005 if (!Val0->getType()->isAggregateType())
4006 return Error(Loc0, "insertvalue operand must be aggregate type");
4008 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4009 return Error(Loc0, "invalid indices for insertvalue");
4010 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4011 return AteExtraComma ? InstExtraComma : InstNormal;
4014 //===----------------------------------------------------------------------===//
4015 // Embedded metadata.
4016 //===----------------------------------------------------------------------===//
4018 /// ParseMDNodeVector
4019 /// ::= Element (',' Element)*
4021 /// ::= 'null' | TypeAndValue
4022 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4023 PerFunctionState *PFS) {
4024 // Check for an empty list.
4025 if (Lex.getKind() == lltok::rbrace)
4029 // Null is a special case since it is typeless.
4030 if (EatIfPresent(lltok::kw_null)) {
4036 if (ParseTypeAndValue(V, PFS)) return true;
4038 } while (EatIfPresent(lltok::comma));