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::Builder &B, unsigned AttrKind) {
920 LocTy AttrLoc = Lex.getLoc();
921 bool HaveError = false;
926 lltok::Kind Token = Lex.getKind();
928 default: // End of attributes.
930 case lltok::kw_zeroext: B.addAttribute(Attributes::ZExt); break;
931 case lltok::kw_signext: B.addAttribute(Attributes::SExt); break;
932 case lltok::kw_inreg: B.addAttribute(Attributes::InReg); break;
933 case lltok::kw_sret: B.addAttribute(Attributes::StructRet); break;
934 case lltok::kw_noalias: B.addAttribute(Attributes::NoAlias); break;
935 case lltok::kw_nocapture: B.addAttribute(Attributes::NoCapture); break;
936 case lltok::kw_byval: B.addAttribute(Attributes::ByVal); break;
937 case lltok::kw_nest: B.addAttribute(Attributes::Nest); break;
939 case lltok::kw_noreturn: B.addAttribute(Attributes::NoReturn); break;
940 case lltok::kw_nounwind: B.addAttribute(Attributes::NoUnwind); break;
941 case lltok::kw_uwtable: B.addAttribute(Attributes::UWTable); break;
942 case lltok::kw_returns_twice: B.addAttribute(Attributes::ReturnsTwice); break;
943 case lltok::kw_noinline: B.addAttribute(Attributes::NoInline); break;
944 case lltok::kw_readnone: B.addAttribute(Attributes::ReadNone); break;
945 case lltok::kw_readonly: B.addAttribute(Attributes::ReadOnly); break;
946 case lltok::kw_inlinehint: B.addAttribute(Attributes::InlineHint); break;
947 case lltok::kw_alwaysinline: B.addAttribute(Attributes::AlwaysInline); break;
948 case lltok::kw_optsize: B.addAttribute(Attributes::OptimizeForSize); break;
949 case lltok::kw_ssp: B.addAttribute(Attributes::StackProtect); break;
950 case lltok::kw_sspreq: B.addAttribute(Attributes::StackProtectReq); break;
951 case lltok::kw_noredzone: B.addAttribute(Attributes::NoRedZone); break;
952 case lltok::kw_noimplicitfloat: B.addAttribute(Attributes::NoImplicitFloat); break;
953 case lltok::kw_naked: B.addAttribute(Attributes::Naked); break;
954 case lltok::kw_nonlazybind: B.addAttribute(Attributes::NonLazyBind); break;
955 case lltok::kw_address_safety: B.addAttribute(Attributes::AddressSafety); break;
957 case lltok::kw_alignstack: {
959 if (ParseOptionalStackAlignment(Alignment))
961 B.addStackAlignmentAttr(Alignment);
965 case lltok::kw_align: {
967 if (ParseOptionalAlignment(Alignment))
969 B.addAlignmentAttr(Alignment);
975 // Perform some error checking.
979 HaveError |= Error(AttrLoc, "invalid use of attribute on a function");
981 case lltok::kw_align:
982 // As a hack, we allow "align 2" on functions as a synonym for
988 case lltok::kw_nocapture:
989 case lltok::kw_byval:
992 HaveError |= Error(AttrLoc, "invalid use of parameter-only attribute");
996 case lltok::kw_noreturn:
997 case lltok::kw_nounwind:
998 case lltok::kw_readnone:
999 case lltok::kw_readonly:
1000 case lltok::kw_noinline:
1001 case lltok::kw_alwaysinline:
1002 case lltok::kw_optsize:
1004 case lltok::kw_sspreq:
1005 case lltok::kw_noredzone:
1006 case lltok::kw_noimplicitfloat:
1007 case lltok::kw_naked:
1008 case lltok::kw_inlinehint:
1009 case lltok::kw_alignstack:
1010 case lltok::kw_uwtable:
1011 case lltok::kw_nonlazybind:
1012 case lltok::kw_returns_twice:
1013 case lltok::kw_address_safety:
1015 HaveError |= Error(AttrLoc, "invalid use of function-only attribute");
1023 /// ParseOptionalLinkage
1026 /// ::= 'linker_private'
1027 /// ::= 'linker_private_weak'
1032 /// ::= 'linkonce_odr'
1033 /// ::= 'linkonce_odr_auto_hide'
1034 /// ::= 'available_externally'
1039 /// ::= 'extern_weak'
1041 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1043 switch (Lex.getKind()) {
1044 default: Res=GlobalValue::ExternalLinkage; return false;
1045 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1046 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1047 case lltok::kw_linker_private_weak:
1048 Res = GlobalValue::LinkerPrivateWeakLinkage;
1050 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1051 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1052 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1053 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1054 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1055 case lltok::kw_linkonce_odr_auto_hide:
1056 case lltok::kw_linker_private_weak_def_auto: // FIXME: For backwards compat.
1057 Res = GlobalValue::LinkOnceODRAutoHideLinkage;
1059 case lltok::kw_available_externally:
1060 Res = GlobalValue::AvailableExternallyLinkage;
1062 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1063 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1064 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1065 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1066 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1067 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1074 /// ParseOptionalVisibility
1080 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1081 switch (Lex.getKind()) {
1082 default: Res = GlobalValue::DefaultVisibility; return false;
1083 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1084 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1085 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1091 /// ParseOptionalCallingConv
1096 /// ::= 'x86_stdcallcc'
1097 /// ::= 'x86_fastcallcc'
1098 /// ::= 'x86_thiscallcc'
1099 /// ::= 'arm_apcscc'
1100 /// ::= 'arm_aapcscc'
1101 /// ::= 'arm_aapcs_vfpcc'
1102 /// ::= 'msp430_intrcc'
1103 /// ::= 'ptx_kernel'
1104 /// ::= 'ptx_device'
1106 /// ::= 'spir_kernel'
1109 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1110 switch (Lex.getKind()) {
1111 default: CC = CallingConv::C; return false;
1112 case lltok::kw_ccc: CC = CallingConv::C; break;
1113 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1114 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1115 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1116 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1117 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1118 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1119 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1120 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1121 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1122 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1123 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1124 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1125 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1126 case lltok::kw_cc: {
1127 unsigned ArbitraryCC;
1129 if (ParseUInt32(ArbitraryCC))
1131 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1140 /// ParseInstructionMetadata
1141 /// ::= !dbg !42 (',' !dbg !57)*
1142 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1143 PerFunctionState *PFS) {
1145 if (Lex.getKind() != lltok::MetadataVar)
1146 return TokError("expected metadata after comma");
1148 std::string Name = Lex.getStrVal();
1149 unsigned MDK = M->getMDKindID(Name);
1153 SMLoc Loc = Lex.getLoc();
1155 if (ParseToken(lltok::exclaim, "expected '!' here"))
1158 // This code is similar to that of ParseMetadataValue, however it needs to
1159 // have special-case code for a forward reference; see the comments on
1160 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1161 // at the top level here.
1162 if (Lex.getKind() == lltok::lbrace) {
1164 if (ParseMetadataListValue(ID, PFS))
1166 assert(ID.Kind == ValID::t_MDNode);
1167 Inst->setMetadata(MDK, ID.MDNodeVal);
1169 unsigned NodeID = 0;
1170 if (ParseMDNodeID(Node, NodeID))
1173 // If we got the node, add it to the instruction.
1174 Inst->setMetadata(MDK, Node);
1176 MDRef R = { Loc, MDK, NodeID };
1177 // Otherwise, remember that this should be resolved later.
1178 ForwardRefInstMetadata[Inst].push_back(R);
1182 // If this is the end of the list, we're done.
1183 } while (EatIfPresent(lltok::comma));
1187 /// ParseOptionalAlignment
1190 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1192 if (!EatIfPresent(lltok::kw_align))
1194 LocTy AlignLoc = Lex.getLoc();
1195 if (ParseUInt32(Alignment)) return true;
1196 if (!isPowerOf2_32(Alignment))
1197 return Error(AlignLoc, "alignment is not a power of two");
1198 if (Alignment > Value::MaximumAlignment)
1199 return Error(AlignLoc, "huge alignments are not supported yet");
1203 /// ParseOptionalCommaAlign
1207 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1209 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1210 bool &AteExtraComma) {
1211 AteExtraComma = false;
1212 while (EatIfPresent(lltok::comma)) {
1213 // Metadata at the end is an early exit.
1214 if (Lex.getKind() == lltok::MetadataVar) {
1215 AteExtraComma = true;
1219 if (Lex.getKind() != lltok::kw_align)
1220 return Error(Lex.getLoc(), "expected metadata or 'align'");
1222 if (ParseOptionalAlignment(Alignment)) return true;
1228 /// ParseScopeAndOrdering
1229 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1232 /// This sets Scope and Ordering to the parsed values.
1233 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1234 AtomicOrdering &Ordering) {
1238 Scope = CrossThread;
1239 if (EatIfPresent(lltok::kw_singlethread))
1240 Scope = SingleThread;
1241 switch (Lex.getKind()) {
1242 default: return TokError("Expected ordering on atomic instruction");
1243 case lltok::kw_unordered: Ordering = Unordered; break;
1244 case lltok::kw_monotonic: Ordering = Monotonic; break;
1245 case lltok::kw_acquire: Ordering = Acquire; break;
1246 case lltok::kw_release: Ordering = Release; break;
1247 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1248 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1254 /// ParseOptionalStackAlignment
1256 /// ::= 'alignstack' '(' 4 ')'
1257 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1259 if (!EatIfPresent(lltok::kw_alignstack))
1261 LocTy ParenLoc = Lex.getLoc();
1262 if (!EatIfPresent(lltok::lparen))
1263 return Error(ParenLoc, "expected '('");
1264 LocTy AlignLoc = Lex.getLoc();
1265 if (ParseUInt32(Alignment)) return true;
1266 ParenLoc = Lex.getLoc();
1267 if (!EatIfPresent(lltok::rparen))
1268 return Error(ParenLoc, "expected ')'");
1269 if (!isPowerOf2_32(Alignment))
1270 return Error(AlignLoc, "stack alignment is not a power of two");
1274 /// ParseIndexList - This parses the index list for an insert/extractvalue
1275 /// instruction. This sets AteExtraComma in the case where we eat an extra
1276 /// comma at the end of the line and find that it is followed by metadata.
1277 /// Clients that don't allow metadata can call the version of this function that
1278 /// only takes one argument.
1281 /// ::= (',' uint32)+
1283 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1284 bool &AteExtraComma) {
1285 AteExtraComma = false;
1287 if (Lex.getKind() != lltok::comma)
1288 return TokError("expected ',' as start of index list");
1290 while (EatIfPresent(lltok::comma)) {
1291 if (Lex.getKind() == lltok::MetadataVar) {
1292 AteExtraComma = true;
1296 if (ParseUInt32(Idx)) return true;
1297 Indices.push_back(Idx);
1303 //===----------------------------------------------------------------------===//
1305 //===----------------------------------------------------------------------===//
1307 /// ParseType - Parse a type.
1308 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1309 SMLoc TypeLoc = Lex.getLoc();
1310 switch (Lex.getKind()) {
1312 return TokError("expected type");
1314 // Type ::= 'float' | 'void' (etc)
1315 Result = Lex.getTyVal();
1319 // Type ::= StructType
1320 if (ParseAnonStructType(Result, false))
1323 case lltok::lsquare:
1324 // Type ::= '[' ... ']'
1325 Lex.Lex(); // eat the lsquare.
1326 if (ParseArrayVectorType(Result, false))
1329 case lltok::less: // Either vector or packed struct.
1330 // Type ::= '<' ... '>'
1332 if (Lex.getKind() == lltok::lbrace) {
1333 if (ParseAnonStructType(Result, true) ||
1334 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1336 } else if (ParseArrayVectorType(Result, true))
1339 case lltok::LocalVar: {
1341 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1343 // If the type hasn't been defined yet, create a forward definition and
1344 // remember where that forward def'n was seen (in case it never is defined).
1345 if (Entry.first == 0) {
1346 Entry.first = StructType::create(Context, Lex.getStrVal());
1347 Entry.second = Lex.getLoc();
1349 Result = Entry.first;
1354 case lltok::LocalVarID: {
1356 if (Lex.getUIntVal() >= NumberedTypes.size())
1357 NumberedTypes.resize(Lex.getUIntVal()+1);
1358 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1360 // If the type hasn't been defined yet, create a forward definition and
1361 // remember where that forward def'n was seen (in case it never is defined).
1362 if (Entry.first == 0) {
1363 Entry.first = StructType::create(Context);
1364 Entry.second = Lex.getLoc();
1366 Result = Entry.first;
1372 // Parse the type suffixes.
1374 switch (Lex.getKind()) {
1377 if (!AllowVoid && Result->isVoidTy())
1378 return Error(TypeLoc, "void type only allowed for function results");
1381 // Type ::= Type '*'
1383 if (Result->isLabelTy())
1384 return TokError("basic block pointers are invalid");
1385 if (Result->isVoidTy())
1386 return TokError("pointers to void are invalid - use i8* instead");
1387 if (!PointerType::isValidElementType(Result))
1388 return TokError("pointer to this type is invalid");
1389 Result = PointerType::getUnqual(Result);
1393 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1394 case lltok::kw_addrspace: {
1395 if (Result->isLabelTy())
1396 return TokError("basic block pointers are invalid");
1397 if (Result->isVoidTy())
1398 return TokError("pointers to void are invalid; use i8* instead");
1399 if (!PointerType::isValidElementType(Result))
1400 return TokError("pointer to this type is invalid");
1402 if (ParseOptionalAddrSpace(AddrSpace) ||
1403 ParseToken(lltok::star, "expected '*' in address space"))
1406 Result = PointerType::get(Result, AddrSpace);
1410 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1412 if (ParseFunctionType(Result))
1419 /// ParseParameterList
1421 /// ::= '(' Arg (',' Arg)* ')'
1423 /// ::= Type OptionalAttributes Value OptionalAttributes
1424 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1425 PerFunctionState &PFS) {
1426 if (ParseToken(lltok::lparen, "expected '(' in call"))
1429 while (Lex.getKind() != lltok::rparen) {
1430 // If this isn't the first argument, we need a comma.
1431 if (!ArgList.empty() &&
1432 ParseToken(lltok::comma, "expected ',' in argument list"))
1435 // Parse the argument.
1438 Attributes::Builder ArgAttrs;
1440 if (ParseType(ArgTy, ArgLoc))
1443 // Otherwise, handle normal operands.
1444 if (ParseOptionalAttrs(ArgAttrs, 0) || ParseValue(ArgTy, V, PFS))
1446 ArgList.push_back(ParamInfo(ArgLoc, V, Attributes::get(V->getContext(),
1450 Lex.Lex(); // Lex the ')'.
1456 /// ParseArgumentList - Parse the argument list for a function type or function
1458 /// ::= '(' ArgTypeListI ')'
1462 /// ::= ArgTypeList ',' '...'
1463 /// ::= ArgType (',' ArgType)*
1465 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1468 assert(Lex.getKind() == lltok::lparen);
1469 Lex.Lex(); // eat the (.
1471 if (Lex.getKind() == lltok::rparen) {
1473 } else if (Lex.getKind() == lltok::dotdotdot) {
1477 LocTy TypeLoc = Lex.getLoc();
1479 Attributes::Builder Attrs;
1482 if (ParseType(ArgTy) ||
1483 ParseOptionalAttrs(Attrs, 0)) return true;
1485 if (ArgTy->isVoidTy())
1486 return Error(TypeLoc, "argument can not have void type");
1488 if (Lex.getKind() == lltok::LocalVar) {
1489 Name = Lex.getStrVal();
1493 if (!FunctionType::isValidArgumentType(ArgTy))
1494 return Error(TypeLoc, "invalid type for function argument");
1496 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1497 Attributes::get(ArgTy->getContext(),
1500 while (EatIfPresent(lltok::comma)) {
1501 // Handle ... at end of arg list.
1502 if (EatIfPresent(lltok::dotdotdot)) {
1507 // Otherwise must be an argument type.
1508 TypeLoc = Lex.getLoc();
1509 if (ParseType(ArgTy) || ParseOptionalAttrs(Attrs, 0)) return true;
1511 if (ArgTy->isVoidTy())
1512 return Error(TypeLoc, "argument can not have void type");
1514 if (Lex.getKind() == lltok::LocalVar) {
1515 Name = Lex.getStrVal();
1521 if (!ArgTy->isFirstClassType())
1522 return Error(TypeLoc, "invalid type for function argument");
1524 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1525 Attributes::get(ArgTy->getContext(), Attrs),
1530 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1533 /// ParseFunctionType
1534 /// ::= Type ArgumentList OptionalAttrs
1535 bool LLParser::ParseFunctionType(Type *&Result) {
1536 assert(Lex.getKind() == lltok::lparen);
1538 if (!FunctionType::isValidReturnType(Result))
1539 return TokError("invalid function return type");
1541 SmallVector<ArgInfo, 8> ArgList;
1543 if (ParseArgumentList(ArgList, isVarArg))
1546 // Reject names on the arguments lists.
1547 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1548 if (!ArgList[i].Name.empty())
1549 return Error(ArgList[i].Loc, "argument name invalid in function type");
1550 if (ArgList[i].Attrs.hasAttributes())
1551 return Error(ArgList[i].Loc,
1552 "argument attributes invalid in function type");
1555 SmallVector<Type*, 16> ArgListTy;
1556 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1557 ArgListTy.push_back(ArgList[i].Ty);
1559 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1563 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1565 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1566 SmallVector<Type*, 8> Elts;
1567 if (ParseStructBody(Elts)) return true;
1569 Result = StructType::get(Context, Elts, Packed);
1573 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1574 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1575 std::pair<Type*, LocTy> &Entry,
1577 // If the type was already defined, diagnose the redefinition.
1578 if (Entry.first && !Entry.second.isValid())
1579 return Error(TypeLoc, "redefinition of type");
1581 // If we have opaque, just return without filling in the definition for the
1582 // struct. This counts as a definition as far as the .ll file goes.
1583 if (EatIfPresent(lltok::kw_opaque)) {
1584 // This type is being defined, so clear the location to indicate this.
1585 Entry.second = SMLoc();
1587 // If this type number has never been uttered, create it.
1588 if (Entry.first == 0)
1589 Entry.first = StructType::create(Context, Name);
1590 ResultTy = Entry.first;
1594 // If the type starts with '<', then it is either a packed struct or a vector.
1595 bool isPacked = EatIfPresent(lltok::less);
1597 // If we don't have a struct, then we have a random type alias, which we
1598 // accept for compatibility with old files. These types are not allowed to be
1599 // forward referenced and not allowed to be recursive.
1600 if (Lex.getKind() != lltok::lbrace) {
1602 return Error(TypeLoc, "forward references to non-struct type");
1606 return ParseArrayVectorType(ResultTy, true);
1607 return ParseType(ResultTy);
1610 // This type is being defined, so clear the location to indicate this.
1611 Entry.second = SMLoc();
1613 // If this type number has never been uttered, create it.
1614 if (Entry.first == 0)
1615 Entry.first = StructType::create(Context, Name);
1617 StructType *STy = cast<StructType>(Entry.first);
1619 SmallVector<Type*, 8> Body;
1620 if (ParseStructBody(Body) ||
1621 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
1624 STy->setBody(Body, isPacked);
1630 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1633 /// ::= '{' Type (',' Type)* '}'
1634 /// ::= '<' '{' '}' '>'
1635 /// ::= '<' '{' Type (',' Type)* '}' '>'
1636 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
1637 assert(Lex.getKind() == lltok::lbrace);
1638 Lex.Lex(); // Consume the '{'
1640 // Handle the empty struct.
1641 if (EatIfPresent(lltok::rbrace))
1644 LocTy EltTyLoc = Lex.getLoc();
1646 if (ParseType(Ty)) return true;
1649 if (!StructType::isValidElementType(Ty))
1650 return Error(EltTyLoc, "invalid element type for struct");
1652 while (EatIfPresent(lltok::comma)) {
1653 EltTyLoc = Lex.getLoc();
1654 if (ParseType(Ty)) return true;
1656 if (!StructType::isValidElementType(Ty))
1657 return Error(EltTyLoc, "invalid element type for struct");
1662 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
1665 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1666 /// token has already been consumed.
1668 /// ::= '[' APSINTVAL 'x' Types ']'
1669 /// ::= '<' APSINTVAL 'x' Types '>'
1670 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
1671 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1672 Lex.getAPSIntVal().getBitWidth() > 64)
1673 return TokError("expected number in address space");
1675 LocTy SizeLoc = Lex.getLoc();
1676 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1679 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1682 LocTy TypeLoc = Lex.getLoc();
1684 if (ParseType(EltTy)) return true;
1686 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1687 "expected end of sequential type"))
1692 return Error(SizeLoc, "zero element vector is illegal");
1693 if ((unsigned)Size != Size)
1694 return Error(SizeLoc, "size too large for vector");
1695 if (!VectorType::isValidElementType(EltTy))
1696 return Error(TypeLoc,
1697 "vector element type must be fp, integer or a pointer to these types");
1698 Result = VectorType::get(EltTy, unsigned(Size));
1700 if (!ArrayType::isValidElementType(EltTy))
1701 return Error(TypeLoc, "invalid array element type");
1702 Result = ArrayType::get(EltTy, Size);
1707 //===----------------------------------------------------------------------===//
1708 // Function Semantic Analysis.
1709 //===----------------------------------------------------------------------===//
1711 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1713 : P(p), F(f), FunctionNumber(functionNumber) {
1715 // Insert unnamed arguments into the NumberedVals list.
1716 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1719 NumberedVals.push_back(AI);
1722 LLParser::PerFunctionState::~PerFunctionState() {
1723 // If there were any forward referenced non-basicblock values, delete them.
1724 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1725 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1726 if (!isa<BasicBlock>(I->second.first)) {
1727 I->second.first->replaceAllUsesWith(
1728 UndefValue::get(I->second.first->getType()));
1729 delete I->second.first;
1730 I->second.first = 0;
1733 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1734 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1735 if (!isa<BasicBlock>(I->second.first)) {
1736 I->second.first->replaceAllUsesWith(
1737 UndefValue::get(I->second.first->getType()));
1738 delete I->second.first;
1739 I->second.first = 0;
1743 bool LLParser::PerFunctionState::FinishFunction() {
1744 // Check to see if someone took the address of labels in this block.
1745 if (!P.ForwardRefBlockAddresses.empty()) {
1747 if (!F.getName().empty()) {
1748 FunctionID.Kind = ValID::t_GlobalName;
1749 FunctionID.StrVal = F.getName();
1751 FunctionID.Kind = ValID::t_GlobalID;
1752 FunctionID.UIntVal = FunctionNumber;
1755 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1756 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1757 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1758 // Resolve all these references.
1759 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1762 P.ForwardRefBlockAddresses.erase(FRBAI);
1766 if (!ForwardRefVals.empty())
1767 return P.Error(ForwardRefVals.begin()->second.second,
1768 "use of undefined value '%" + ForwardRefVals.begin()->first +
1770 if (!ForwardRefValIDs.empty())
1771 return P.Error(ForwardRefValIDs.begin()->second.second,
1772 "use of undefined value '%" +
1773 Twine(ForwardRefValIDs.begin()->first) + "'");
1778 /// GetVal - Get a value with the specified name or ID, creating a
1779 /// forward reference record if needed. This can return null if the value
1780 /// exists but does not have the right type.
1781 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1782 Type *Ty, LocTy Loc) {
1783 // Look this name up in the normal function symbol table.
1784 Value *Val = F.getValueSymbolTable().lookup(Name);
1786 // If this is a forward reference for the value, see if we already created a
1787 // forward ref record.
1789 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1790 I = ForwardRefVals.find(Name);
1791 if (I != ForwardRefVals.end())
1792 Val = I->second.first;
1795 // If we have the value in the symbol table or fwd-ref table, return it.
1797 if (Val->getType() == Ty) return Val;
1798 if (Ty->isLabelTy())
1799 P.Error(Loc, "'%" + Name + "' is not a basic block");
1801 P.Error(Loc, "'%" + Name + "' defined with type '" +
1802 getTypeString(Val->getType()) + "'");
1806 // Don't make placeholders with invalid type.
1807 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
1808 P.Error(Loc, "invalid use of a non-first-class type");
1812 // Otherwise, create a new forward reference for this value and remember it.
1814 if (Ty->isLabelTy())
1815 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1817 FwdVal = new Argument(Ty, Name);
1819 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1823 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
1825 // Look this name up in the normal function symbol table.
1826 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1828 // If this is a forward reference for the value, see if we already created a
1829 // forward ref record.
1831 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1832 I = ForwardRefValIDs.find(ID);
1833 if (I != ForwardRefValIDs.end())
1834 Val = I->second.first;
1837 // If we have the value in the symbol table or fwd-ref table, return it.
1839 if (Val->getType() == Ty) return Val;
1840 if (Ty->isLabelTy())
1841 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
1843 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
1844 getTypeString(Val->getType()) + "'");
1848 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
1849 P.Error(Loc, "invalid use of a non-first-class type");
1853 // Otherwise, create a new forward reference for this value and remember it.
1855 if (Ty->isLabelTy())
1856 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1858 FwdVal = new Argument(Ty);
1860 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1864 /// SetInstName - After an instruction is parsed and inserted into its
1865 /// basic block, this installs its name.
1866 bool LLParser::PerFunctionState::SetInstName(int NameID,
1867 const std::string &NameStr,
1868 LocTy NameLoc, Instruction *Inst) {
1869 // If this instruction has void type, it cannot have a name or ID specified.
1870 if (Inst->getType()->isVoidTy()) {
1871 if (NameID != -1 || !NameStr.empty())
1872 return P.Error(NameLoc, "instructions returning void cannot have a name");
1876 // If this was a numbered instruction, verify that the instruction is the
1877 // expected value and resolve any forward references.
1878 if (NameStr.empty()) {
1879 // If neither a name nor an ID was specified, just use the next ID.
1881 NameID = NumberedVals.size();
1883 if (unsigned(NameID) != NumberedVals.size())
1884 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1885 Twine(NumberedVals.size()) + "'");
1887 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1888 ForwardRefValIDs.find(NameID);
1889 if (FI != ForwardRefValIDs.end()) {
1890 if (FI->second.first->getType() != Inst->getType())
1891 return P.Error(NameLoc, "instruction forward referenced with type '" +
1892 getTypeString(FI->second.first->getType()) + "'");
1893 FI->second.first->replaceAllUsesWith(Inst);
1894 delete FI->second.first;
1895 ForwardRefValIDs.erase(FI);
1898 NumberedVals.push_back(Inst);
1902 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1903 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1904 FI = ForwardRefVals.find(NameStr);
1905 if (FI != ForwardRefVals.end()) {
1906 if (FI->second.first->getType() != Inst->getType())
1907 return P.Error(NameLoc, "instruction forward referenced with type '" +
1908 getTypeString(FI->second.first->getType()) + "'");
1909 FI->second.first->replaceAllUsesWith(Inst);
1910 delete FI->second.first;
1911 ForwardRefVals.erase(FI);
1914 // Set the name on the instruction.
1915 Inst->setName(NameStr);
1917 if (Inst->getName() != NameStr)
1918 return P.Error(NameLoc, "multiple definition of local value named '" +
1923 /// GetBB - Get a basic block with the specified name or ID, creating a
1924 /// forward reference record if needed.
1925 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1927 return cast_or_null<BasicBlock>(GetVal(Name,
1928 Type::getLabelTy(F.getContext()), Loc));
1931 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1932 return cast_or_null<BasicBlock>(GetVal(ID,
1933 Type::getLabelTy(F.getContext()), Loc));
1936 /// DefineBB - Define the specified basic block, which is either named or
1937 /// unnamed. If there is an error, this returns null otherwise it returns
1938 /// the block being defined.
1939 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1943 BB = GetBB(NumberedVals.size(), Loc);
1945 BB = GetBB(Name, Loc);
1946 if (BB == 0) return 0; // Already diagnosed error.
1948 // Move the block to the end of the function. Forward ref'd blocks are
1949 // inserted wherever they happen to be referenced.
1950 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1952 // Remove the block from forward ref sets.
1954 ForwardRefValIDs.erase(NumberedVals.size());
1955 NumberedVals.push_back(BB);
1957 // BB forward references are already in the function symbol table.
1958 ForwardRefVals.erase(Name);
1964 //===----------------------------------------------------------------------===//
1966 //===----------------------------------------------------------------------===//
1968 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1969 /// type implied. For example, if we parse "4" we don't know what integer type
1970 /// it has. The value will later be combined with its type and checked for
1971 /// sanity. PFS is used to convert function-local operands of metadata (since
1972 /// metadata operands are not just parsed here but also converted to values).
1973 /// PFS can be null when we are not parsing metadata values inside a function.
1974 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
1975 ID.Loc = Lex.getLoc();
1976 switch (Lex.getKind()) {
1977 default: return TokError("expected value token");
1978 case lltok::GlobalID: // @42
1979 ID.UIntVal = Lex.getUIntVal();
1980 ID.Kind = ValID::t_GlobalID;
1982 case lltok::GlobalVar: // @foo
1983 ID.StrVal = Lex.getStrVal();
1984 ID.Kind = ValID::t_GlobalName;
1986 case lltok::LocalVarID: // %42
1987 ID.UIntVal = Lex.getUIntVal();
1988 ID.Kind = ValID::t_LocalID;
1990 case lltok::LocalVar: // %foo
1991 ID.StrVal = Lex.getStrVal();
1992 ID.Kind = ValID::t_LocalName;
1994 case lltok::exclaim: // !42, !{...}, or !"foo"
1995 return ParseMetadataValue(ID, PFS);
1997 ID.APSIntVal = Lex.getAPSIntVal();
1998 ID.Kind = ValID::t_APSInt;
2000 case lltok::APFloat:
2001 ID.APFloatVal = Lex.getAPFloatVal();
2002 ID.Kind = ValID::t_APFloat;
2004 case lltok::kw_true:
2005 ID.ConstantVal = ConstantInt::getTrue(Context);
2006 ID.Kind = ValID::t_Constant;
2008 case lltok::kw_false:
2009 ID.ConstantVal = ConstantInt::getFalse(Context);
2010 ID.Kind = ValID::t_Constant;
2012 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2013 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2014 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2016 case lltok::lbrace: {
2017 // ValID ::= '{' ConstVector '}'
2019 SmallVector<Constant*, 16> Elts;
2020 if (ParseGlobalValueVector(Elts) ||
2021 ParseToken(lltok::rbrace, "expected end of struct constant"))
2024 ID.ConstantStructElts = new Constant*[Elts.size()];
2025 ID.UIntVal = Elts.size();
2026 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2027 ID.Kind = ValID::t_ConstantStruct;
2031 // ValID ::= '<' ConstVector '>' --> Vector.
2032 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2034 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2036 SmallVector<Constant*, 16> Elts;
2037 LocTy FirstEltLoc = Lex.getLoc();
2038 if (ParseGlobalValueVector(Elts) ||
2040 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2041 ParseToken(lltok::greater, "expected end of constant"))
2044 if (isPackedStruct) {
2045 ID.ConstantStructElts = new Constant*[Elts.size()];
2046 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2047 ID.UIntVal = Elts.size();
2048 ID.Kind = ValID::t_PackedConstantStruct;
2053 return Error(ID.Loc, "constant vector must not be empty");
2055 if (!Elts[0]->getType()->isIntegerTy() &&
2056 !Elts[0]->getType()->isFloatingPointTy() &&
2057 !Elts[0]->getType()->isPointerTy())
2058 return Error(FirstEltLoc,
2059 "vector elements must have integer, pointer or floating point type");
2061 // Verify that all the vector elements have the same type.
2062 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2063 if (Elts[i]->getType() != Elts[0]->getType())
2064 return Error(FirstEltLoc,
2065 "vector element #" + Twine(i) +
2066 " is not of type '" + getTypeString(Elts[0]->getType()));
2068 ID.ConstantVal = ConstantVector::get(Elts);
2069 ID.Kind = ValID::t_Constant;
2072 case lltok::lsquare: { // Array Constant
2074 SmallVector<Constant*, 16> Elts;
2075 LocTy FirstEltLoc = Lex.getLoc();
2076 if (ParseGlobalValueVector(Elts) ||
2077 ParseToken(lltok::rsquare, "expected end of array constant"))
2080 // Handle empty element.
2082 // Use undef instead of an array because it's inconvenient to determine
2083 // the element type at this point, there being no elements to examine.
2084 ID.Kind = ValID::t_EmptyArray;
2088 if (!Elts[0]->getType()->isFirstClassType())
2089 return Error(FirstEltLoc, "invalid array element type: " +
2090 getTypeString(Elts[0]->getType()));
2092 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2094 // Verify all elements are correct type!
2095 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2096 if (Elts[i]->getType() != Elts[0]->getType())
2097 return Error(FirstEltLoc,
2098 "array element #" + Twine(i) +
2099 " is not of type '" + getTypeString(Elts[0]->getType()));
2102 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2103 ID.Kind = ValID::t_Constant;
2106 case lltok::kw_c: // c "foo"
2108 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2110 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2111 ID.Kind = ValID::t_Constant;
2114 case lltok::kw_asm: {
2115 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2116 bool HasSideEffect, AlignStack, AsmDialect;
2118 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2119 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2120 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2121 ParseStringConstant(ID.StrVal) ||
2122 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2123 ParseToken(lltok::StringConstant, "expected constraint string"))
2125 ID.StrVal2 = Lex.getStrVal();
2126 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2127 (unsigned(AsmDialect)<<2);
2128 ID.Kind = ValID::t_InlineAsm;
2132 case lltok::kw_blockaddress: {
2133 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2137 LocTy FnLoc, LabelLoc;
2139 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2141 ParseToken(lltok::comma, "expected comma in block address expression")||
2142 ParseValID(Label) ||
2143 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2146 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2147 return Error(Fn.Loc, "expected function name in blockaddress");
2148 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2149 return Error(Label.Loc, "expected basic block name in blockaddress");
2151 // Make a global variable as a placeholder for this reference.
2152 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2153 false, GlobalValue::InternalLinkage,
2155 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2156 ID.ConstantVal = FwdRef;
2157 ID.Kind = ValID::t_Constant;
2161 case lltok::kw_trunc:
2162 case lltok::kw_zext:
2163 case lltok::kw_sext:
2164 case lltok::kw_fptrunc:
2165 case lltok::kw_fpext:
2166 case lltok::kw_bitcast:
2167 case lltok::kw_uitofp:
2168 case lltok::kw_sitofp:
2169 case lltok::kw_fptoui:
2170 case lltok::kw_fptosi:
2171 case lltok::kw_inttoptr:
2172 case lltok::kw_ptrtoint: {
2173 unsigned Opc = Lex.getUIntVal();
2177 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2178 ParseGlobalTypeAndValue(SrcVal) ||
2179 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2180 ParseType(DestTy) ||
2181 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2183 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2184 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2185 getTypeString(SrcVal->getType()) + "' to '" +
2186 getTypeString(DestTy) + "'");
2187 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2189 ID.Kind = ValID::t_Constant;
2192 case lltok::kw_extractvalue: {
2195 SmallVector<unsigned, 4> Indices;
2196 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2197 ParseGlobalTypeAndValue(Val) ||
2198 ParseIndexList(Indices) ||
2199 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2202 if (!Val->getType()->isAggregateType())
2203 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2204 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2205 return Error(ID.Loc, "invalid indices for extractvalue");
2206 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2207 ID.Kind = ValID::t_Constant;
2210 case lltok::kw_insertvalue: {
2212 Constant *Val0, *Val1;
2213 SmallVector<unsigned, 4> Indices;
2214 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2215 ParseGlobalTypeAndValue(Val0) ||
2216 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2217 ParseGlobalTypeAndValue(Val1) ||
2218 ParseIndexList(Indices) ||
2219 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2221 if (!Val0->getType()->isAggregateType())
2222 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2223 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2224 return Error(ID.Loc, "invalid indices for insertvalue");
2225 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2226 ID.Kind = ValID::t_Constant;
2229 case lltok::kw_icmp:
2230 case lltok::kw_fcmp: {
2231 unsigned PredVal, Opc = Lex.getUIntVal();
2232 Constant *Val0, *Val1;
2234 if (ParseCmpPredicate(PredVal, Opc) ||
2235 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2236 ParseGlobalTypeAndValue(Val0) ||
2237 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2238 ParseGlobalTypeAndValue(Val1) ||
2239 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2242 if (Val0->getType() != Val1->getType())
2243 return Error(ID.Loc, "compare operands must have the same type");
2245 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2247 if (Opc == Instruction::FCmp) {
2248 if (!Val0->getType()->isFPOrFPVectorTy())
2249 return Error(ID.Loc, "fcmp requires floating point operands");
2250 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2252 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2253 if (!Val0->getType()->isIntOrIntVectorTy() &&
2254 !Val0->getType()->getScalarType()->isPointerTy())
2255 return Error(ID.Loc, "icmp requires pointer or integer operands");
2256 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2258 ID.Kind = ValID::t_Constant;
2262 // Binary Operators.
2264 case lltok::kw_fadd:
2266 case lltok::kw_fsub:
2268 case lltok::kw_fmul:
2269 case lltok::kw_udiv:
2270 case lltok::kw_sdiv:
2271 case lltok::kw_fdiv:
2272 case lltok::kw_urem:
2273 case lltok::kw_srem:
2274 case lltok::kw_frem:
2276 case lltok::kw_lshr:
2277 case lltok::kw_ashr: {
2281 unsigned Opc = Lex.getUIntVal();
2282 Constant *Val0, *Val1;
2284 LocTy ModifierLoc = Lex.getLoc();
2285 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2286 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2287 if (EatIfPresent(lltok::kw_nuw))
2289 if (EatIfPresent(lltok::kw_nsw)) {
2291 if (EatIfPresent(lltok::kw_nuw))
2294 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2295 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2296 if (EatIfPresent(lltok::kw_exact))
2299 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2300 ParseGlobalTypeAndValue(Val0) ||
2301 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2302 ParseGlobalTypeAndValue(Val1) ||
2303 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2305 if (Val0->getType() != Val1->getType())
2306 return Error(ID.Loc, "operands of constexpr must have same type");
2307 if (!Val0->getType()->isIntOrIntVectorTy()) {
2309 return Error(ModifierLoc, "nuw only applies to integer operations");
2311 return Error(ModifierLoc, "nsw only applies to integer operations");
2313 // Check that the type is valid for the operator.
2315 case Instruction::Add:
2316 case Instruction::Sub:
2317 case Instruction::Mul:
2318 case Instruction::UDiv:
2319 case Instruction::SDiv:
2320 case Instruction::URem:
2321 case Instruction::SRem:
2322 case Instruction::Shl:
2323 case Instruction::AShr:
2324 case Instruction::LShr:
2325 if (!Val0->getType()->isIntOrIntVectorTy())
2326 return Error(ID.Loc, "constexpr requires integer operands");
2328 case Instruction::FAdd:
2329 case Instruction::FSub:
2330 case Instruction::FMul:
2331 case Instruction::FDiv:
2332 case Instruction::FRem:
2333 if (!Val0->getType()->isFPOrFPVectorTy())
2334 return Error(ID.Loc, "constexpr requires fp operands");
2336 default: llvm_unreachable("Unknown binary operator!");
2339 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2340 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2341 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2342 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2344 ID.Kind = ValID::t_Constant;
2348 // Logical Operations
2351 case lltok::kw_xor: {
2352 unsigned Opc = Lex.getUIntVal();
2353 Constant *Val0, *Val1;
2355 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2356 ParseGlobalTypeAndValue(Val0) ||
2357 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2358 ParseGlobalTypeAndValue(Val1) ||
2359 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2361 if (Val0->getType() != Val1->getType())
2362 return Error(ID.Loc, "operands of constexpr must have same type");
2363 if (!Val0->getType()->isIntOrIntVectorTy())
2364 return Error(ID.Loc,
2365 "constexpr requires integer or integer vector operands");
2366 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2367 ID.Kind = ValID::t_Constant;
2371 case lltok::kw_getelementptr:
2372 case lltok::kw_shufflevector:
2373 case lltok::kw_insertelement:
2374 case lltok::kw_extractelement:
2375 case lltok::kw_select: {
2376 unsigned Opc = Lex.getUIntVal();
2377 SmallVector<Constant*, 16> Elts;
2378 bool InBounds = false;
2380 if (Opc == Instruction::GetElementPtr)
2381 InBounds = EatIfPresent(lltok::kw_inbounds);
2382 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2383 ParseGlobalValueVector(Elts) ||
2384 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2387 if (Opc == Instruction::GetElementPtr) {
2388 if (Elts.size() == 0 ||
2389 !Elts[0]->getType()->getScalarType()->isPointerTy())
2390 return Error(ID.Loc, "getelementptr requires pointer operand");
2392 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2393 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2394 return Error(ID.Loc, "invalid indices for getelementptr");
2395 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2397 } else if (Opc == Instruction::Select) {
2398 if (Elts.size() != 3)
2399 return Error(ID.Loc, "expected three operands to select");
2400 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2402 return Error(ID.Loc, Reason);
2403 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2404 } else if (Opc == Instruction::ShuffleVector) {
2405 if (Elts.size() != 3)
2406 return Error(ID.Loc, "expected three operands to shufflevector");
2407 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2408 return Error(ID.Loc, "invalid operands to shufflevector");
2410 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2411 } else if (Opc == Instruction::ExtractElement) {
2412 if (Elts.size() != 2)
2413 return Error(ID.Loc, "expected two operands to extractelement");
2414 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2415 return Error(ID.Loc, "invalid extractelement operands");
2416 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2418 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2419 if (Elts.size() != 3)
2420 return Error(ID.Loc, "expected three operands to insertelement");
2421 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2422 return Error(ID.Loc, "invalid insertelement operands");
2424 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2427 ID.Kind = ValID::t_Constant;
2436 /// ParseGlobalValue - Parse a global value with the specified type.
2437 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2441 bool Parsed = ParseValID(ID) ||
2442 ConvertValIDToValue(Ty, ID, V, NULL);
2443 if (V && !(C = dyn_cast<Constant>(V)))
2444 return Error(ID.Loc, "global values must be constants");
2448 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2450 return ParseType(Ty) ||
2451 ParseGlobalValue(Ty, V);
2454 /// ParseGlobalValueVector
2456 /// ::= TypeAndValue (',' TypeAndValue)*
2457 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2459 if (Lex.getKind() == lltok::rbrace ||
2460 Lex.getKind() == lltok::rsquare ||
2461 Lex.getKind() == lltok::greater ||
2462 Lex.getKind() == lltok::rparen)
2466 if (ParseGlobalTypeAndValue(C)) return true;
2469 while (EatIfPresent(lltok::comma)) {
2470 if (ParseGlobalTypeAndValue(C)) return true;
2477 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2478 assert(Lex.getKind() == lltok::lbrace);
2481 SmallVector<Value*, 16> Elts;
2482 if (ParseMDNodeVector(Elts, PFS) ||
2483 ParseToken(lltok::rbrace, "expected end of metadata node"))
2486 ID.MDNodeVal = MDNode::get(Context, Elts);
2487 ID.Kind = ValID::t_MDNode;
2491 /// ParseMetadataValue
2495 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2496 assert(Lex.getKind() == lltok::exclaim);
2501 if (Lex.getKind() == lltok::lbrace)
2502 return ParseMetadataListValue(ID, PFS);
2504 // Standalone metadata reference
2506 if (Lex.getKind() == lltok::APSInt) {
2507 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2508 ID.Kind = ValID::t_MDNode;
2513 // ::= '!' STRINGCONSTANT
2514 if (ParseMDString(ID.MDStringVal)) return true;
2515 ID.Kind = ValID::t_MDString;
2520 //===----------------------------------------------------------------------===//
2521 // Function Parsing.
2522 //===----------------------------------------------------------------------===//
2524 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2525 PerFunctionState *PFS) {
2526 if (Ty->isFunctionTy())
2527 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2530 case ValID::t_LocalID:
2531 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2532 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2534 case ValID::t_LocalName:
2535 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2536 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2538 case ValID::t_InlineAsm: {
2539 PointerType *PTy = dyn_cast<PointerType>(Ty);
2541 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2542 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2543 return Error(ID.Loc, "invalid type for inline asm constraint string");
2544 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
2545 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
2548 case ValID::t_MDNode:
2549 if (!Ty->isMetadataTy())
2550 return Error(ID.Loc, "metadata value must have metadata type");
2553 case ValID::t_MDString:
2554 if (!Ty->isMetadataTy())
2555 return Error(ID.Loc, "metadata value must have metadata type");
2558 case ValID::t_GlobalName:
2559 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2561 case ValID::t_GlobalID:
2562 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2564 case ValID::t_APSInt:
2565 if (!Ty->isIntegerTy())
2566 return Error(ID.Loc, "integer constant must have integer type");
2567 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2568 V = ConstantInt::get(Context, ID.APSIntVal);
2570 case ValID::t_APFloat:
2571 if (!Ty->isFloatingPointTy() ||
2572 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2573 return Error(ID.Loc, "floating point constant invalid for type");
2575 // The lexer has no type info, so builds all half, float, and double FP
2576 // constants as double. Fix this here. Long double does not need this.
2577 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
2580 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
2582 else if (Ty->isFloatTy())
2583 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2586 V = ConstantFP::get(Context, ID.APFloatVal);
2588 if (V->getType() != Ty)
2589 return Error(ID.Loc, "floating point constant does not have type '" +
2590 getTypeString(Ty) + "'");
2594 if (!Ty->isPointerTy())
2595 return Error(ID.Loc, "null must be a pointer type");
2596 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2598 case ValID::t_Undef:
2599 // FIXME: LabelTy should not be a first-class type.
2600 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2601 return Error(ID.Loc, "invalid type for undef constant");
2602 V = UndefValue::get(Ty);
2604 case ValID::t_EmptyArray:
2605 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2606 return Error(ID.Loc, "invalid empty array initializer");
2607 V = UndefValue::get(Ty);
2610 // FIXME: LabelTy should not be a first-class type.
2611 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2612 return Error(ID.Loc, "invalid type for null constant");
2613 V = Constant::getNullValue(Ty);
2615 case ValID::t_Constant:
2616 if (ID.ConstantVal->getType() != Ty)
2617 return Error(ID.Loc, "constant expression type mismatch");
2621 case ValID::t_ConstantStruct:
2622 case ValID::t_PackedConstantStruct:
2623 if (StructType *ST = dyn_cast<StructType>(Ty)) {
2624 if (ST->getNumElements() != ID.UIntVal)
2625 return Error(ID.Loc,
2626 "initializer with struct type has wrong # elements");
2627 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
2628 return Error(ID.Loc, "packed'ness of initializer and type don't match");
2630 // Verify that the elements are compatible with the structtype.
2631 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
2632 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
2633 return Error(ID.Loc, "element " + Twine(i) +
2634 " of struct initializer doesn't match struct element type");
2636 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
2639 return Error(ID.Loc, "constant expression type mismatch");
2642 llvm_unreachable("Invalid ValID");
2645 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
2648 return ParseValID(ID, PFS) ||
2649 ConvertValIDToValue(Ty, ID, V, PFS);
2652 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
2654 return ParseType(Ty) ||
2655 ParseValue(Ty, V, PFS);
2658 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2659 PerFunctionState &PFS) {
2662 if (ParseTypeAndValue(V, PFS)) return true;
2663 if (!isa<BasicBlock>(V))
2664 return Error(Loc, "expected a basic block");
2665 BB = cast<BasicBlock>(V);
2671 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2672 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2673 /// OptionalAlign OptGC
2674 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2675 // Parse the linkage.
2676 LocTy LinkageLoc = Lex.getLoc();
2679 unsigned Visibility;
2680 Attributes::Builder RetAttrs;
2683 LocTy RetTypeLoc = Lex.getLoc();
2684 if (ParseOptionalLinkage(Linkage) ||
2685 ParseOptionalVisibility(Visibility) ||
2686 ParseOptionalCallingConv(CC) ||
2687 ParseOptionalAttrs(RetAttrs, 1) ||
2688 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2691 // Verify that the linkage is ok.
2692 switch ((GlobalValue::LinkageTypes)Linkage) {
2693 case GlobalValue::ExternalLinkage:
2694 break; // always ok.
2695 case GlobalValue::DLLImportLinkage:
2696 case GlobalValue::ExternalWeakLinkage:
2698 return Error(LinkageLoc, "invalid linkage for function definition");
2700 case GlobalValue::PrivateLinkage:
2701 case GlobalValue::LinkerPrivateLinkage:
2702 case GlobalValue::LinkerPrivateWeakLinkage:
2703 case GlobalValue::InternalLinkage:
2704 case GlobalValue::AvailableExternallyLinkage:
2705 case GlobalValue::LinkOnceAnyLinkage:
2706 case GlobalValue::LinkOnceODRLinkage:
2707 case GlobalValue::LinkOnceODRAutoHideLinkage:
2708 case GlobalValue::WeakAnyLinkage:
2709 case GlobalValue::WeakODRLinkage:
2710 case GlobalValue::DLLExportLinkage:
2712 return Error(LinkageLoc, "invalid linkage for function declaration");
2714 case GlobalValue::AppendingLinkage:
2715 case GlobalValue::CommonLinkage:
2716 return Error(LinkageLoc, "invalid function linkage type");
2719 if (!FunctionType::isValidReturnType(RetType))
2720 return Error(RetTypeLoc, "invalid function return type");
2722 LocTy NameLoc = Lex.getLoc();
2724 std::string FunctionName;
2725 if (Lex.getKind() == lltok::GlobalVar) {
2726 FunctionName = Lex.getStrVal();
2727 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2728 unsigned NameID = Lex.getUIntVal();
2730 if (NameID != NumberedVals.size())
2731 return TokError("function expected to be numbered '%" +
2732 Twine(NumberedVals.size()) + "'");
2734 return TokError("expected function name");
2739 if (Lex.getKind() != lltok::lparen)
2740 return TokError("expected '(' in function argument list");
2742 SmallVector<ArgInfo, 8> ArgList;
2744 Attributes::Builder FuncAttrs;
2745 std::string Section;
2749 LocTy UnnamedAddrLoc;
2751 if (ParseArgumentList(ArgList, isVarArg) ||
2752 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
2754 ParseOptionalAttrs(FuncAttrs, 2) ||
2755 (EatIfPresent(lltok::kw_section) &&
2756 ParseStringConstant(Section)) ||
2757 ParseOptionalAlignment(Alignment) ||
2758 (EatIfPresent(lltok::kw_gc) &&
2759 ParseStringConstant(GC)))
2762 // If the alignment was parsed as an attribute, move to the alignment field.
2763 if (FuncAttrs.hasAlignmentAttr()) {
2764 Alignment = FuncAttrs.getAlignment();
2765 FuncAttrs.removeAttribute(Attributes::Alignment);
2768 // Okay, if we got here, the function is syntactically valid. Convert types
2769 // and do semantic checks.
2770 std::vector<Type*> ParamTypeList;
2771 SmallVector<AttributeWithIndex, 8> Attrs;
2773 if (RetAttrs.hasAttributes())
2774 Attrs.push_back(AttributeWithIndex::get(0,
2775 Attributes::get(RetType->getContext(),
2778 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2779 ParamTypeList.push_back(ArgList[i].Ty);
2780 if (ArgList[i].Attrs.hasAttributes())
2781 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2784 if (FuncAttrs.hasAttributes())
2785 Attrs.push_back(AttributeWithIndex::get(~0,
2786 Attributes::get(RetType->getContext(),
2789 AttrListPtr PAL = AttrListPtr::get(Attrs);
2791 if (PAL.getParamAttributes(1).hasAttribute(Attributes::StructRet) &&
2792 !RetType->isVoidTy())
2793 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2796 FunctionType::get(RetType, ParamTypeList, isVarArg);
2797 PointerType *PFT = PointerType::getUnqual(FT);
2800 if (!FunctionName.empty()) {
2801 // If this was a definition of a forward reference, remove the definition
2802 // from the forward reference table and fill in the forward ref.
2803 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2804 ForwardRefVals.find(FunctionName);
2805 if (FRVI != ForwardRefVals.end()) {
2806 Fn = M->getFunction(FunctionName);
2808 return Error(FRVI->second.second, "invalid forward reference to "
2809 "function as global value!");
2810 if (Fn->getType() != PFT)
2811 return Error(FRVI->second.second, "invalid forward reference to "
2812 "function '" + FunctionName + "' with wrong type!");
2814 ForwardRefVals.erase(FRVI);
2815 } else if ((Fn = M->getFunction(FunctionName))) {
2816 // Reject redefinitions.
2817 return Error(NameLoc, "invalid redefinition of function '" +
2818 FunctionName + "'");
2819 } else if (M->getNamedValue(FunctionName)) {
2820 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
2824 // If this is a definition of a forward referenced function, make sure the
2826 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2827 = ForwardRefValIDs.find(NumberedVals.size());
2828 if (I != ForwardRefValIDs.end()) {
2829 Fn = cast<Function>(I->second.first);
2830 if (Fn->getType() != PFT)
2831 return Error(NameLoc, "type of definition and forward reference of '@" +
2832 Twine(NumberedVals.size()) + "' disagree");
2833 ForwardRefValIDs.erase(I);
2838 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2839 else // Move the forward-reference to the correct spot in the module.
2840 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2842 if (FunctionName.empty())
2843 NumberedVals.push_back(Fn);
2845 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2846 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2847 Fn->setCallingConv(CC);
2848 Fn->setAttributes(PAL);
2849 Fn->setUnnamedAddr(UnnamedAddr);
2850 Fn->setAlignment(Alignment);
2851 Fn->setSection(Section);
2852 if (!GC.empty()) Fn->setGC(GC.c_str());
2854 // Add all of the arguments we parsed to the function.
2855 Function::arg_iterator ArgIt = Fn->arg_begin();
2856 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2857 // If the argument has a name, insert it into the argument symbol table.
2858 if (ArgList[i].Name.empty()) continue;
2860 // Set the name, if it conflicted, it will be auto-renamed.
2861 ArgIt->setName(ArgList[i].Name);
2863 if (ArgIt->getName() != ArgList[i].Name)
2864 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2865 ArgList[i].Name + "'");
2872 /// ParseFunctionBody
2873 /// ::= '{' BasicBlock+ '}'
2875 bool LLParser::ParseFunctionBody(Function &Fn) {
2876 if (Lex.getKind() != lltok::lbrace)
2877 return TokError("expected '{' in function body");
2878 Lex.Lex(); // eat the {.
2880 int FunctionNumber = -1;
2881 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
2883 PerFunctionState PFS(*this, Fn, FunctionNumber);
2885 // We need at least one basic block.
2886 if (Lex.getKind() == lltok::rbrace)
2887 return TokError("function body requires at least one basic block");
2889 while (Lex.getKind() != lltok::rbrace)
2890 if (ParseBasicBlock(PFS)) return true;
2895 // Verify function is ok.
2896 return PFS.FinishFunction();
2900 /// ::= LabelStr? Instruction*
2901 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2902 // If this basic block starts out with a name, remember it.
2904 LocTy NameLoc = Lex.getLoc();
2905 if (Lex.getKind() == lltok::LabelStr) {
2906 Name = Lex.getStrVal();
2910 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2911 if (BB == 0) return true;
2913 std::string NameStr;
2915 // Parse the instructions in this block until we get a terminator.
2917 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
2919 // This instruction may have three possibilities for a name: a) none
2920 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2921 LocTy NameLoc = Lex.getLoc();
2925 if (Lex.getKind() == lltok::LocalVarID) {
2926 NameID = Lex.getUIntVal();
2928 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2930 } else if (Lex.getKind() == lltok::LocalVar) {
2931 NameStr = Lex.getStrVal();
2933 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2937 switch (ParseInstruction(Inst, BB, PFS)) {
2938 default: llvm_unreachable("Unknown ParseInstruction result!");
2939 case InstError: return true;
2941 BB->getInstList().push_back(Inst);
2943 // With a normal result, we check to see if the instruction is followed by
2944 // a comma and metadata.
2945 if (EatIfPresent(lltok::comma))
2946 if (ParseInstructionMetadata(Inst, &PFS))
2949 case InstExtraComma:
2950 BB->getInstList().push_back(Inst);
2952 // If the instruction parser ate an extra comma at the end of it, it
2953 // *must* be followed by metadata.
2954 if (ParseInstructionMetadata(Inst, &PFS))
2959 // Set the name on the instruction.
2960 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2961 } while (!isa<TerminatorInst>(Inst));
2966 //===----------------------------------------------------------------------===//
2967 // Instruction Parsing.
2968 //===----------------------------------------------------------------------===//
2970 /// ParseInstruction - Parse one of the many different instructions.
2972 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2973 PerFunctionState &PFS) {
2974 lltok::Kind Token = Lex.getKind();
2975 if (Token == lltok::Eof)
2976 return TokError("found end of file when expecting more instructions");
2977 LocTy Loc = Lex.getLoc();
2978 unsigned KeywordVal = Lex.getUIntVal();
2979 Lex.Lex(); // Eat the keyword.
2982 default: return Error(Loc, "expected instruction opcode");
2983 // Terminator Instructions.
2984 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
2985 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
2986 case lltok::kw_br: return ParseBr(Inst, PFS);
2987 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
2988 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
2989 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
2990 case lltok::kw_resume: return ParseResume(Inst, PFS);
2991 // Binary Operators.
2995 case lltok::kw_shl: {
2996 bool NUW = EatIfPresent(lltok::kw_nuw);
2997 bool NSW = EatIfPresent(lltok::kw_nsw);
2998 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3000 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3002 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3003 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3006 case lltok::kw_fadd:
3007 case lltok::kw_fsub:
3008 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3010 case lltok::kw_sdiv:
3011 case lltok::kw_udiv:
3012 case lltok::kw_lshr:
3013 case lltok::kw_ashr: {
3014 bool Exact = EatIfPresent(lltok::kw_exact);
3016 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3017 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3021 case lltok::kw_urem:
3022 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3023 case lltok::kw_fdiv:
3024 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
3027 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3028 case lltok::kw_icmp:
3029 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3031 case lltok::kw_trunc:
3032 case lltok::kw_zext:
3033 case lltok::kw_sext:
3034 case lltok::kw_fptrunc:
3035 case lltok::kw_fpext:
3036 case lltok::kw_bitcast:
3037 case lltok::kw_uitofp:
3038 case lltok::kw_sitofp:
3039 case lltok::kw_fptoui:
3040 case lltok::kw_fptosi:
3041 case lltok::kw_inttoptr:
3042 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3044 case lltok::kw_select: return ParseSelect(Inst, PFS);
3045 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3046 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3047 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3048 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3049 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3050 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3051 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3052 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3054 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3055 case lltok::kw_load: return ParseLoad(Inst, PFS);
3056 case lltok::kw_store: return ParseStore(Inst, PFS);
3057 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3058 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3059 case lltok::kw_fence: return ParseFence(Inst, PFS);
3060 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3061 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3062 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3066 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3067 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3068 if (Opc == Instruction::FCmp) {
3069 switch (Lex.getKind()) {
3070 default: TokError("expected fcmp predicate (e.g. 'oeq')");
3071 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3072 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3073 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3074 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3075 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3076 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3077 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3078 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3079 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3080 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3081 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3082 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3083 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3084 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3085 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3086 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3089 switch (Lex.getKind()) {
3090 default: TokError("expected icmp predicate (e.g. 'eq')");
3091 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3092 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3093 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3094 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3095 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3096 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3097 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3098 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3099 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3100 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3107 //===----------------------------------------------------------------------===//
3108 // Terminator Instructions.
3109 //===----------------------------------------------------------------------===//
3111 /// ParseRet - Parse a return instruction.
3112 /// ::= 'ret' void (',' !dbg, !1)*
3113 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3114 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3115 PerFunctionState &PFS) {
3116 SMLoc TypeLoc = Lex.getLoc();
3118 if (ParseType(Ty, true /*void allowed*/)) return true;
3120 Type *ResType = PFS.getFunction().getReturnType();
3122 if (Ty->isVoidTy()) {
3123 if (!ResType->isVoidTy())
3124 return Error(TypeLoc, "value doesn't match function result type '" +
3125 getTypeString(ResType) + "'");
3127 Inst = ReturnInst::Create(Context);
3132 if (ParseValue(Ty, RV, PFS)) return true;
3134 if (ResType != RV->getType())
3135 return Error(TypeLoc, "value doesn't match function result type '" +
3136 getTypeString(ResType) + "'");
3138 Inst = ReturnInst::Create(Context, RV);
3144 /// ::= 'br' TypeAndValue
3145 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3146 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3149 BasicBlock *Op1, *Op2;
3150 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3152 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3153 Inst = BranchInst::Create(BB);
3157 if (Op0->getType() != Type::getInt1Ty(Context))
3158 return Error(Loc, "branch condition must have 'i1' type");
3160 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3161 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3162 ParseToken(lltok::comma, "expected ',' after true destination") ||
3163 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3166 Inst = BranchInst::Create(Op1, Op2, Op0);
3172 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3174 /// ::= (TypeAndValue ',' TypeAndValue)*
3175 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3176 LocTy CondLoc, BBLoc;
3178 BasicBlock *DefaultBB;
3179 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3180 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3181 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3182 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3185 if (!Cond->getType()->isIntegerTy())
3186 return Error(CondLoc, "switch condition must have integer type");
3188 // Parse the jump table pairs.
3189 SmallPtrSet<Value*, 32> SeenCases;
3190 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3191 while (Lex.getKind() != lltok::rsquare) {
3195 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3196 ParseToken(lltok::comma, "expected ',' after case value") ||
3197 ParseTypeAndBasicBlock(DestBB, PFS))
3200 if (!SeenCases.insert(Constant))
3201 return Error(CondLoc, "duplicate case value in switch");
3202 if (!isa<ConstantInt>(Constant))
3203 return Error(CondLoc, "case value is not a constant integer");
3205 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3208 Lex.Lex(); // Eat the ']'.
3210 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3211 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3212 SI->addCase(Table[i].first, Table[i].second);
3219 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3220 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3223 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3224 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3225 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3228 if (!Address->getType()->isPointerTy())
3229 return Error(AddrLoc, "indirectbr address must have pointer type");
3231 // Parse the destination list.
3232 SmallVector<BasicBlock*, 16> DestList;
3234 if (Lex.getKind() != lltok::rsquare) {
3236 if (ParseTypeAndBasicBlock(DestBB, PFS))
3238 DestList.push_back(DestBB);
3240 while (EatIfPresent(lltok::comma)) {
3241 if (ParseTypeAndBasicBlock(DestBB, PFS))
3243 DestList.push_back(DestBB);
3247 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3250 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3251 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3252 IBI->addDestination(DestList[i]);
3259 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3260 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3261 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3262 LocTy CallLoc = Lex.getLoc();
3263 Attributes::Builder RetAttrs, FnAttrs;
3268 SmallVector<ParamInfo, 16> ArgList;
3270 BasicBlock *NormalBB, *UnwindBB;
3271 if (ParseOptionalCallingConv(CC) ||
3272 ParseOptionalAttrs(RetAttrs, 1) ||
3273 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3274 ParseValID(CalleeID) ||
3275 ParseParameterList(ArgList, PFS) ||
3276 ParseOptionalAttrs(FnAttrs, 2) ||
3277 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3278 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3279 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3280 ParseTypeAndBasicBlock(UnwindBB, PFS))
3283 // If RetType is a non-function pointer type, then this is the short syntax
3284 // for the call, which means that RetType is just the return type. Infer the
3285 // rest of the function argument types from the arguments that are present.
3286 PointerType *PFTy = 0;
3287 FunctionType *Ty = 0;
3288 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3289 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3290 // Pull out the types of all of the arguments...
3291 std::vector<Type*> ParamTypes;
3292 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3293 ParamTypes.push_back(ArgList[i].V->getType());
3295 if (!FunctionType::isValidReturnType(RetType))
3296 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3298 Ty = FunctionType::get(RetType, ParamTypes, false);
3299 PFTy = PointerType::getUnqual(Ty);
3302 // Look up the callee.
3304 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3306 // Set up the Attributes for the function.
3307 SmallVector<AttributeWithIndex, 8> Attrs;
3308 if (RetAttrs.hasAttributes())
3309 Attrs.push_back(AttributeWithIndex::get(0,
3310 Attributes::get(Callee->getContext(),
3313 SmallVector<Value*, 8> Args;
3315 // Loop through FunctionType's arguments and ensure they are specified
3316 // correctly. Also, gather any parameter attributes.
3317 FunctionType::param_iterator I = Ty->param_begin();
3318 FunctionType::param_iterator E = Ty->param_end();
3319 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3320 Type *ExpectedTy = 0;
3323 } else if (!Ty->isVarArg()) {
3324 return Error(ArgList[i].Loc, "too many arguments specified");
3327 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3328 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3329 getTypeString(ExpectedTy) + "'");
3330 Args.push_back(ArgList[i].V);
3331 if (ArgList[i].Attrs.hasAttributes())
3332 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3336 return Error(CallLoc, "not enough parameters specified for call");
3338 if (FnAttrs.hasAttributes())
3339 Attrs.push_back(AttributeWithIndex::get(~0,
3340 Attributes::get(Callee->getContext(),
3343 // Finish off the Attributes and check them
3344 AttrListPtr PAL = AttrListPtr::get(Attrs);
3346 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3347 II->setCallingConv(CC);
3348 II->setAttributes(PAL);
3354 /// ::= 'resume' TypeAndValue
3355 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3356 Value *Exn; LocTy ExnLoc;
3357 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3360 ResumeInst *RI = ResumeInst::Create(Exn);
3365 //===----------------------------------------------------------------------===//
3366 // Binary Operators.
3367 //===----------------------------------------------------------------------===//
3370 /// ::= ArithmeticOps TypeAndValue ',' Value
3372 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3373 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3374 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3375 unsigned Opc, unsigned OperandType) {
3376 LocTy Loc; Value *LHS, *RHS;
3377 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3378 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3379 ParseValue(LHS->getType(), RHS, PFS))
3383 switch (OperandType) {
3384 default: llvm_unreachable("Unknown operand type!");
3385 case 0: // int or FP.
3386 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3387 LHS->getType()->isFPOrFPVectorTy();
3389 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3390 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3394 return Error(Loc, "invalid operand type for instruction");
3396 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3401 /// ::= ArithmeticOps TypeAndValue ',' Value {
3402 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3404 LocTy Loc; Value *LHS, *RHS;
3405 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3406 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3407 ParseValue(LHS->getType(), RHS, PFS))
3410 if (!LHS->getType()->isIntOrIntVectorTy())
3411 return Error(Loc,"instruction requires integer or integer vector operands");
3413 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3419 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3420 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3421 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3423 // Parse the integer/fp comparison predicate.
3427 if (ParseCmpPredicate(Pred, Opc) ||
3428 ParseTypeAndValue(LHS, Loc, PFS) ||
3429 ParseToken(lltok::comma, "expected ',' after compare value") ||
3430 ParseValue(LHS->getType(), RHS, PFS))
3433 if (Opc == Instruction::FCmp) {
3434 if (!LHS->getType()->isFPOrFPVectorTy())
3435 return Error(Loc, "fcmp requires floating point operands");
3436 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3438 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3439 if (!LHS->getType()->isIntOrIntVectorTy() &&
3440 !LHS->getType()->getScalarType()->isPointerTy())
3441 return Error(Loc, "icmp requires integer operands");
3442 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3447 //===----------------------------------------------------------------------===//
3448 // Other Instructions.
3449 //===----------------------------------------------------------------------===//
3453 /// ::= CastOpc TypeAndValue 'to' Type
3454 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3459 if (ParseTypeAndValue(Op, Loc, PFS) ||
3460 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3464 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3465 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3466 return Error(Loc, "invalid cast opcode for cast from '" +
3467 getTypeString(Op->getType()) + "' to '" +
3468 getTypeString(DestTy) + "'");
3470 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3475 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3476 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3478 Value *Op0, *Op1, *Op2;
3479 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3480 ParseToken(lltok::comma, "expected ',' after select condition") ||
3481 ParseTypeAndValue(Op1, PFS) ||
3482 ParseToken(lltok::comma, "expected ',' after select value") ||
3483 ParseTypeAndValue(Op2, PFS))
3486 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3487 return Error(Loc, Reason);
3489 Inst = SelectInst::Create(Op0, Op1, Op2);
3494 /// ::= 'va_arg' TypeAndValue ',' Type
3495 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3499 if (ParseTypeAndValue(Op, PFS) ||
3500 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3501 ParseType(EltTy, TypeLoc))
3504 if (!EltTy->isFirstClassType())
3505 return Error(TypeLoc, "va_arg requires operand with first class type");
3507 Inst = new VAArgInst(Op, EltTy);
3511 /// ParseExtractElement
3512 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3513 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3516 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3517 ParseToken(lltok::comma, "expected ',' after extract value") ||
3518 ParseTypeAndValue(Op1, PFS))
3521 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3522 return Error(Loc, "invalid extractelement operands");
3524 Inst = ExtractElementInst::Create(Op0, Op1);
3528 /// ParseInsertElement
3529 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3530 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3532 Value *Op0, *Op1, *Op2;
3533 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3534 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3535 ParseTypeAndValue(Op1, PFS) ||
3536 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3537 ParseTypeAndValue(Op2, PFS))
3540 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3541 return Error(Loc, "invalid insertelement operands");
3543 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3547 /// ParseShuffleVector
3548 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3549 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3551 Value *Op0, *Op1, *Op2;
3552 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3553 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3554 ParseTypeAndValue(Op1, PFS) ||
3555 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3556 ParseTypeAndValue(Op2, PFS))
3559 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3560 return Error(Loc, "invalid shufflevector operands");
3562 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3567 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3568 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3569 Type *Ty = 0; LocTy TypeLoc;
3572 if (ParseType(Ty, TypeLoc) ||
3573 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3574 ParseValue(Ty, Op0, PFS) ||
3575 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3576 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3577 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3580 bool AteExtraComma = false;
3581 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3583 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3585 if (!EatIfPresent(lltok::comma))
3588 if (Lex.getKind() == lltok::MetadataVar) {
3589 AteExtraComma = true;
3593 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3594 ParseValue(Ty, Op0, PFS) ||
3595 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3596 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3597 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3601 if (!Ty->isFirstClassType())
3602 return Error(TypeLoc, "phi node must have first class type");
3604 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
3605 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3606 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3608 return AteExtraComma ? InstExtraComma : InstNormal;
3612 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
3614 /// ::= 'catch' TypeAndValue
3616 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
3617 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
3618 Type *Ty = 0; LocTy TyLoc;
3619 Value *PersFn; LocTy PersFnLoc;
3621 if (ParseType(Ty, TyLoc) ||
3622 ParseToken(lltok::kw_personality, "expected 'personality'") ||
3623 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
3626 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
3627 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
3629 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
3630 LandingPadInst::ClauseType CT;
3631 if (EatIfPresent(lltok::kw_catch))
3632 CT = LandingPadInst::Catch;
3633 else if (EatIfPresent(lltok::kw_filter))
3634 CT = LandingPadInst::Filter;
3636 return TokError("expected 'catch' or 'filter' clause type");
3638 Value *V; LocTy VLoc;
3639 if (ParseTypeAndValue(V, VLoc, PFS)) {
3644 // A 'catch' type expects a non-array constant. A filter clause expects an
3646 if (CT == LandingPadInst::Catch) {
3647 if (isa<ArrayType>(V->getType()))
3648 Error(VLoc, "'catch' clause has an invalid type");
3650 if (!isa<ArrayType>(V->getType()))
3651 Error(VLoc, "'filter' clause has an invalid type");
3662 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3663 /// ParameterList OptionalAttrs
3664 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3666 Attributes::Builder RetAttrs, FnAttrs;
3671 SmallVector<ParamInfo, 16> ArgList;
3672 LocTy CallLoc = Lex.getLoc();
3674 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3675 ParseOptionalCallingConv(CC) ||
3676 ParseOptionalAttrs(RetAttrs, 1) ||
3677 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3678 ParseValID(CalleeID) ||
3679 ParseParameterList(ArgList, PFS) ||
3680 ParseOptionalAttrs(FnAttrs, 2))
3683 // If RetType is a non-function pointer type, then this is the short syntax
3684 // for the call, which means that RetType is just the return type. Infer the
3685 // rest of the function argument types from the arguments that are present.
3686 PointerType *PFTy = 0;
3687 FunctionType *Ty = 0;
3688 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3689 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3690 // Pull out the types of all of the arguments...
3691 std::vector<Type*> ParamTypes;
3692 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3693 ParamTypes.push_back(ArgList[i].V->getType());
3695 if (!FunctionType::isValidReturnType(RetType))
3696 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3698 Ty = FunctionType::get(RetType, ParamTypes, false);
3699 PFTy = PointerType::getUnqual(Ty);
3702 // Look up the callee.
3704 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3706 // Set up the Attributes for the function.
3707 SmallVector<AttributeWithIndex, 8> Attrs;
3708 if (RetAttrs.hasAttributes())
3709 Attrs.push_back(AttributeWithIndex::get(0,
3710 Attributes::get(Callee->getContext(),
3713 SmallVector<Value*, 8> Args;
3715 // Loop through FunctionType's arguments and ensure they are specified
3716 // correctly. Also, gather any parameter attributes.
3717 FunctionType::param_iterator I = Ty->param_begin();
3718 FunctionType::param_iterator E = Ty->param_end();
3719 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3720 Type *ExpectedTy = 0;
3723 } else if (!Ty->isVarArg()) {
3724 return Error(ArgList[i].Loc, "too many arguments specified");
3727 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3728 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3729 getTypeString(ExpectedTy) + "'");
3730 Args.push_back(ArgList[i].V);
3731 if (ArgList[i].Attrs.hasAttributes())
3732 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3736 return Error(CallLoc, "not enough parameters specified for call");
3738 if (FnAttrs.hasAttributes())
3739 Attrs.push_back(AttributeWithIndex::get(~0,
3740 Attributes::get(Callee->getContext(),
3743 // Finish off the Attributes and check them
3744 AttrListPtr PAL = AttrListPtr::get(Attrs);
3746 CallInst *CI = CallInst::Create(Callee, Args);
3747 CI->setTailCall(isTail);
3748 CI->setCallingConv(CC);
3749 CI->setAttributes(PAL);
3754 //===----------------------------------------------------------------------===//
3755 // Memory Instructions.
3756 //===----------------------------------------------------------------------===//
3759 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3760 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
3763 unsigned Alignment = 0;
3765 if (ParseType(Ty)) return true;
3767 bool AteExtraComma = false;
3768 if (EatIfPresent(lltok::comma)) {
3769 if (Lex.getKind() == lltok::kw_align) {
3770 if (ParseOptionalAlignment(Alignment)) return true;
3771 } else if (Lex.getKind() == lltok::MetadataVar) {
3772 AteExtraComma = true;
3774 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3775 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3780 if (Size && !Size->getType()->isIntegerTy())
3781 return Error(SizeLoc, "element count must have integer type");
3783 Inst = new AllocaInst(Ty, Size, Alignment);
3784 return AteExtraComma ? InstExtraComma : InstNormal;
3788 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
3789 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
3790 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
3791 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
3792 Value *Val; LocTy Loc;
3793 unsigned Alignment = 0;
3794 bool AteExtraComma = false;
3795 bool isAtomic = false;
3796 AtomicOrdering Ordering = NotAtomic;
3797 SynchronizationScope Scope = CrossThread;
3799 if (Lex.getKind() == lltok::kw_atomic) {
3804 bool isVolatile = false;
3805 if (Lex.getKind() == lltok::kw_volatile) {
3810 if (ParseTypeAndValue(Val, Loc, PFS) ||
3811 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
3812 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3815 if (!Val->getType()->isPointerTy() ||
3816 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3817 return Error(Loc, "load operand must be a pointer to a first class type");
3818 if (isAtomic && !Alignment)
3819 return Error(Loc, "atomic load must have explicit non-zero alignment");
3820 if (Ordering == Release || Ordering == AcquireRelease)
3821 return Error(Loc, "atomic load cannot use Release ordering");
3823 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
3824 return AteExtraComma ? InstExtraComma : InstNormal;
3829 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3830 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
3831 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
3832 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
3833 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3834 unsigned Alignment = 0;
3835 bool AteExtraComma = false;
3836 bool isAtomic = false;
3837 AtomicOrdering Ordering = NotAtomic;
3838 SynchronizationScope Scope = CrossThread;
3840 if (Lex.getKind() == lltok::kw_atomic) {
3845 bool isVolatile = false;
3846 if (Lex.getKind() == lltok::kw_volatile) {
3851 if (ParseTypeAndValue(Val, Loc, PFS) ||
3852 ParseToken(lltok::comma, "expected ',' after store operand") ||
3853 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3854 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
3855 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3858 if (!Ptr->getType()->isPointerTy())
3859 return Error(PtrLoc, "store operand must be a pointer");
3860 if (!Val->getType()->isFirstClassType())
3861 return Error(Loc, "store operand must be a first class value");
3862 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3863 return Error(Loc, "stored value and pointer type do not match");
3864 if (isAtomic && !Alignment)
3865 return Error(Loc, "atomic store must have explicit non-zero alignment");
3866 if (Ordering == Acquire || Ordering == AcquireRelease)
3867 return Error(Loc, "atomic store cannot use Acquire ordering");
3869 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
3870 return AteExtraComma ? InstExtraComma : InstNormal;
3874 /// ::= 'cmpxchg' 'volatile'? TypeAndValue ',' TypeAndValue ',' TypeAndValue
3875 /// 'singlethread'? AtomicOrdering
3876 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
3877 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
3878 bool AteExtraComma = false;
3879 AtomicOrdering Ordering = NotAtomic;
3880 SynchronizationScope Scope = CrossThread;
3881 bool isVolatile = false;
3883 if (EatIfPresent(lltok::kw_volatile))
3886 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3887 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
3888 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
3889 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
3890 ParseTypeAndValue(New, NewLoc, PFS) ||
3891 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
3894 if (Ordering == Unordered)
3895 return TokError("cmpxchg cannot be unordered");
3896 if (!Ptr->getType()->isPointerTy())
3897 return Error(PtrLoc, "cmpxchg operand must be a pointer");
3898 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
3899 return Error(CmpLoc, "compare value and pointer type do not match");
3900 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
3901 return Error(NewLoc, "new value and pointer type do not match");
3902 if (!New->getType()->isIntegerTy())
3903 return Error(NewLoc, "cmpxchg operand must be an integer");
3904 unsigned Size = New->getType()->getPrimitiveSizeInBits();
3905 if (Size < 8 || (Size & (Size - 1)))
3906 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
3909 AtomicCmpXchgInst *CXI =
3910 new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, Scope);
3911 CXI->setVolatile(isVolatile);
3913 return AteExtraComma ? InstExtraComma : InstNormal;
3917 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
3918 /// 'singlethread'? AtomicOrdering
3919 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
3920 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
3921 bool AteExtraComma = false;
3922 AtomicOrdering Ordering = NotAtomic;
3923 SynchronizationScope Scope = CrossThread;
3924 bool isVolatile = false;
3925 AtomicRMWInst::BinOp Operation;
3927 if (EatIfPresent(lltok::kw_volatile))
3930 switch (Lex.getKind()) {
3931 default: return TokError("expected binary operation in atomicrmw");
3932 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
3933 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
3934 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
3935 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
3936 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
3937 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
3938 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
3939 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
3940 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
3941 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
3942 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
3944 Lex.Lex(); // Eat the operation.
3946 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3947 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
3948 ParseTypeAndValue(Val, ValLoc, PFS) ||
3949 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
3952 if (Ordering == Unordered)
3953 return TokError("atomicrmw cannot be unordered");
3954 if (!Ptr->getType()->isPointerTy())
3955 return Error(PtrLoc, "atomicrmw operand must be a pointer");
3956 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3957 return Error(ValLoc, "atomicrmw value and pointer type do not match");
3958 if (!Val->getType()->isIntegerTy())
3959 return Error(ValLoc, "atomicrmw operand must be an integer");
3960 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
3961 if (Size < 8 || (Size & (Size - 1)))
3962 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
3965 AtomicRMWInst *RMWI =
3966 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
3967 RMWI->setVolatile(isVolatile);
3969 return AteExtraComma ? InstExtraComma : InstNormal;
3973 /// ::= 'fence' 'singlethread'? AtomicOrdering
3974 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
3975 AtomicOrdering Ordering = NotAtomic;
3976 SynchronizationScope Scope = CrossThread;
3977 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
3980 if (Ordering == Unordered)
3981 return TokError("fence cannot be unordered");
3982 if (Ordering == Monotonic)
3983 return TokError("fence cannot be monotonic");
3985 Inst = new FenceInst(Context, Ordering, Scope);
3989 /// ParseGetElementPtr
3990 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3991 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3996 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3998 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4000 if (!Ptr->getType()->getScalarType()->isPointerTy())
4001 return Error(Loc, "base of getelementptr must be a pointer");
4003 SmallVector<Value*, 16> Indices;
4004 bool AteExtraComma = false;
4005 while (EatIfPresent(lltok::comma)) {
4006 if (Lex.getKind() == lltok::MetadataVar) {
4007 AteExtraComma = true;
4010 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4011 if (!Val->getType()->getScalarType()->isIntegerTy())
4012 return Error(EltLoc, "getelementptr index must be an integer");
4013 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4014 return Error(EltLoc, "getelementptr index type missmatch");
4015 if (Val->getType()->isVectorTy()) {
4016 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4017 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4018 if (ValNumEl != PtrNumEl)
4019 return Error(EltLoc,
4020 "getelementptr vector index has a wrong number of elements");
4022 Indices.push_back(Val);
4025 if (Val && Val->getType()->isVectorTy() && Indices.size() != 1)
4026 return Error(EltLoc, "vector getelementptrs must have a single index");
4028 if (!GetElementPtrInst::getIndexedType(Ptr->getType(), Indices))
4029 return Error(Loc, "invalid getelementptr indices");
4030 Inst = GetElementPtrInst::Create(Ptr, Indices);
4032 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4033 return AteExtraComma ? InstExtraComma : InstNormal;
4036 /// ParseExtractValue
4037 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4038 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4039 Value *Val; LocTy Loc;
4040 SmallVector<unsigned, 4> Indices;
4042 if (ParseTypeAndValue(Val, Loc, PFS) ||
4043 ParseIndexList(Indices, AteExtraComma))
4046 if (!Val->getType()->isAggregateType())
4047 return Error(Loc, "extractvalue operand must be aggregate type");
4049 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4050 return Error(Loc, "invalid indices for extractvalue");
4051 Inst = ExtractValueInst::Create(Val, Indices);
4052 return AteExtraComma ? InstExtraComma : InstNormal;
4055 /// ParseInsertValue
4056 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4057 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4058 Value *Val0, *Val1; LocTy Loc0, Loc1;
4059 SmallVector<unsigned, 4> Indices;
4061 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4062 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4063 ParseTypeAndValue(Val1, Loc1, PFS) ||
4064 ParseIndexList(Indices, AteExtraComma))
4067 if (!Val0->getType()->isAggregateType())
4068 return Error(Loc0, "insertvalue operand must be aggregate type");
4070 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4071 return Error(Loc0, "invalid indices for insertvalue");
4072 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4073 return AteExtraComma ? InstExtraComma : InstNormal;
4076 //===----------------------------------------------------------------------===//
4077 // Embedded metadata.
4078 //===----------------------------------------------------------------------===//
4080 /// ParseMDNodeVector
4081 /// ::= Element (',' Element)*
4083 /// ::= 'null' | TypeAndValue
4084 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4085 PerFunctionState *PFS) {
4086 // Check for an empty list.
4087 if (Lex.getKind() == lltok::rbrace)
4091 // Null is a special case since it is typeless.
4092 if (EatIfPresent(lltok::kw_null)) {
4098 if (ParseTypeAndValue(V, PFS)) return true;
4100 } while (EatIfPresent(lltok::comma));