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/ADT/SmallPtrSet.h"
16 #include "llvm/AutoUpgrade.h"
17 #include "llvm/IR/CallingConv.h"
18 #include "llvm/IR/Constants.h"
19 #include "llvm/IR/DerivedTypes.h"
20 #include "llvm/IR/InlineAsm.h"
21 #include "llvm/IR/Instructions.h"
22 #include "llvm/IR/LLVMContext.h"
23 #include "llvm/IR/Module.h"
24 #include "llvm/IR/Operator.h"
25 #include "llvm/IR/ValueSymbolTable.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/Support/raw_ostream.h"
30 static std::string getTypeString(Type *T) {
32 raw_string_ostream Tmp(Result);
37 /// Run: module ::= toplevelentity*
38 bool LLParser::Run() {
42 return ParseTopLevelEntities() ||
43 ValidateEndOfModule();
46 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
48 bool LLParser::ValidateEndOfModule() {
49 // Handle any instruction metadata forward references.
50 if (!ForwardRefInstMetadata.empty()) {
51 for (DenseMap<Instruction*, std::vector<MDRef> >::iterator
52 I = ForwardRefInstMetadata.begin(), E = ForwardRefInstMetadata.end();
54 Instruction *Inst = I->first;
55 const std::vector<MDRef> &MDList = I->second;
57 for (unsigned i = 0, e = MDList.size(); i != e; ++i) {
58 unsigned SlotNo = MDList[i].MDSlot;
60 if (SlotNo >= NumberedMetadata.size() || NumberedMetadata[SlotNo] == 0)
61 return Error(MDList[i].Loc, "use of undefined metadata '!" +
63 Inst->setMetadata(MDList[i].MDKind, NumberedMetadata[SlotNo]);
66 ForwardRefInstMetadata.clear();
69 for (unsigned I = 0, E = InstsWithTBAATag.size(); I < E; I++)
70 UpgradeInstWithTBAATag(InstsWithTBAATag[I]);
72 // Handle any function attribute group forward references.
73 for (std::map<Value*, std::vector<unsigned> >::iterator
74 I = ForwardRefAttrGroups.begin(), E = ForwardRefAttrGroups.end();
77 std::vector<unsigned> &Vec = I->second;
80 for (std::vector<unsigned>::iterator VI = Vec.begin(), VE = Vec.end();
82 B.merge(NumberedAttrBuilders[*VI]);
84 if (Function *Fn = dyn_cast<Function>(V)) {
85 AttributeSet AS = Fn->getAttributes();
86 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
87 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
88 AS.getFnAttributes());
92 // If the alignment was parsed as an attribute, move to the alignment
94 if (FnAttrs.hasAlignmentAttr()) {
95 Fn->setAlignment(FnAttrs.getAlignment());
96 FnAttrs.removeAttribute(Attribute::Alignment);
99 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
100 AttributeSet::get(Context,
101 AttributeSet::FunctionIndex,
103 Fn->setAttributes(AS);
104 } else if (CallInst *CI = dyn_cast<CallInst>(V)) {
105 AttributeSet AS = CI->getAttributes();
106 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
107 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
108 AS.getFnAttributes());
110 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
111 AttributeSet::get(Context,
112 AttributeSet::FunctionIndex,
114 CI->setAttributes(AS);
115 } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
116 AttributeSet AS = II->getAttributes();
117 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
118 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
119 AS.getFnAttributes());
121 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
122 AttributeSet::get(Context,
123 AttributeSet::FunctionIndex,
125 II->setAttributes(AS);
127 llvm_unreachable("invalid object with forward attribute group reference");
131 // If there are entries in ForwardRefBlockAddresses at this point, they are
132 // references after the function was defined. Resolve those now.
133 while (!ForwardRefBlockAddresses.empty()) {
134 // Okay, we are referencing an already-parsed function, resolve them now.
136 const ValID &Fn = ForwardRefBlockAddresses.begin()->first;
137 if (Fn.Kind == ValID::t_GlobalName)
138 TheFn = M->getFunction(Fn.StrVal);
139 else if (Fn.UIntVal < NumberedVals.size())
140 TheFn = dyn_cast<Function>(NumberedVals[Fn.UIntVal]);
143 return Error(Fn.Loc, "unknown function referenced by blockaddress");
145 // Resolve all these references.
146 if (ResolveForwardRefBlockAddresses(TheFn,
147 ForwardRefBlockAddresses.begin()->second,
151 ForwardRefBlockAddresses.erase(ForwardRefBlockAddresses.begin());
154 for (unsigned i = 0, e = NumberedTypes.size(); i != e; ++i)
155 if (NumberedTypes[i].second.isValid())
156 return Error(NumberedTypes[i].second,
157 "use of undefined type '%" + Twine(i) + "'");
159 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
160 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
161 if (I->second.second.isValid())
162 return Error(I->second.second,
163 "use of undefined type named '" + I->getKey() + "'");
165 if (!ForwardRefVals.empty())
166 return Error(ForwardRefVals.begin()->second.second,
167 "use of undefined value '@" + ForwardRefVals.begin()->first +
170 if (!ForwardRefValIDs.empty())
171 return Error(ForwardRefValIDs.begin()->second.second,
172 "use of undefined value '@" +
173 Twine(ForwardRefValIDs.begin()->first) + "'");
175 if (!ForwardRefMDNodes.empty())
176 return Error(ForwardRefMDNodes.begin()->second.second,
177 "use of undefined metadata '!" +
178 Twine(ForwardRefMDNodes.begin()->first) + "'");
181 // Look for intrinsic functions and CallInst that need to be upgraded
182 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
183 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
185 UpgradeDebugInfo(*M);
190 bool LLParser::ResolveForwardRefBlockAddresses(Function *TheFn,
191 std::vector<std::pair<ValID, GlobalValue*> > &Refs,
192 PerFunctionState *PFS) {
193 // Loop over all the references, resolving them.
194 for (unsigned i = 0, e = Refs.size(); i != e; ++i) {
197 if (Refs[i].first.Kind == ValID::t_LocalName)
198 Res = PFS->GetBB(Refs[i].first.StrVal, Refs[i].first.Loc);
200 Res = PFS->GetBB(Refs[i].first.UIntVal, Refs[i].first.Loc);
201 } else if (Refs[i].first.Kind == ValID::t_LocalID) {
202 return Error(Refs[i].first.Loc,
203 "cannot take address of numeric label after the function is defined");
205 Res = dyn_cast_or_null<BasicBlock>(
206 TheFn->getValueSymbolTable().lookup(Refs[i].first.StrVal));
210 return Error(Refs[i].first.Loc,
211 "referenced value is not a basic block");
213 // Get the BlockAddress for this and update references to use it.
214 BlockAddress *BA = BlockAddress::get(TheFn, Res);
215 Refs[i].second->replaceAllUsesWith(BA);
216 Refs[i].second->eraseFromParent();
222 //===----------------------------------------------------------------------===//
223 // Top-Level Entities
224 //===----------------------------------------------------------------------===//
226 bool LLParser::ParseTopLevelEntities() {
228 switch (Lex.getKind()) {
229 default: return TokError("expected top-level entity");
230 case lltok::Eof: return false;
231 case lltok::kw_declare: if (ParseDeclare()) return true; break;
232 case lltok::kw_define: if (ParseDefine()) return true; break;
233 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
234 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
235 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
236 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
237 case lltok::LocalVar: if (ParseNamedType()) return true; break;
238 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
239 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
240 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
241 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
243 // The Global variable production with no name can have many different
244 // optional leading prefixes, the production is:
245 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
246 // OptionalThreadLocal OptionalAddrSpace OptionalUnNammedAddr
247 // ('constant'|'global') ...
248 case lltok::kw_private: // OptionalLinkage
249 case lltok::kw_linker_private: // OptionalLinkage
250 case lltok::kw_linker_private_weak: // OptionalLinkage
251 case lltok::kw_internal: // OptionalLinkage
252 case lltok::kw_weak: // OptionalLinkage
253 case lltok::kw_weak_odr: // OptionalLinkage
254 case lltok::kw_linkonce: // OptionalLinkage
255 case lltok::kw_linkonce_odr: // OptionalLinkage
256 case lltok::kw_appending: // OptionalLinkage
257 case lltok::kw_common: // OptionalLinkage
258 case lltok::kw_extern_weak: // OptionalLinkage
259 case lltok::kw_external: { // OptionalLinkage
260 unsigned Linkage, Visibility, DLLStorageClass;
261 if (ParseOptionalLinkage(Linkage) ||
262 ParseOptionalVisibility(Visibility) ||
263 ParseOptionalDLLStorageClass(DLLStorageClass) ||
264 ParseGlobal("", SMLoc(), Linkage, true, Visibility, DLLStorageClass))
268 case lltok::kw_default: // OptionalVisibility
269 case lltok::kw_hidden: // OptionalVisibility
270 case lltok::kw_protected: { // OptionalVisibility
271 unsigned Visibility, DLLStorageClass;
272 if (ParseOptionalVisibility(Visibility) ||
273 ParseOptionalDLLStorageClass(DLLStorageClass) ||
274 ParseGlobal("", SMLoc(), 0, false, Visibility, DLLStorageClass))
279 case lltok::kw_thread_local: // OptionalThreadLocal
280 case lltok::kw_addrspace: // OptionalAddrSpace
281 case lltok::kw_constant: // GlobalType
282 case lltok::kw_global: // GlobalType
283 if (ParseGlobal("", SMLoc(), 0, false, 0, 0)) return true;
286 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
293 /// ::= 'module' 'asm' STRINGCONSTANT
294 bool LLParser::ParseModuleAsm() {
295 assert(Lex.getKind() == lltok::kw_module);
299 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
300 ParseStringConstant(AsmStr)) return true;
302 M->appendModuleInlineAsm(AsmStr);
307 /// ::= 'target' 'triple' '=' STRINGCONSTANT
308 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
309 bool LLParser::ParseTargetDefinition() {
310 assert(Lex.getKind() == lltok::kw_target);
313 default: return TokError("unknown target property");
314 case lltok::kw_triple:
316 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
317 ParseStringConstant(Str))
319 M->setTargetTriple(Str);
321 case lltok::kw_datalayout:
323 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
324 ParseStringConstant(Str))
326 M->setDataLayout(Str);
332 /// ::= 'deplibs' '=' '[' ']'
333 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
334 /// FIXME: Remove in 4.0. Currently parse, but ignore.
335 bool LLParser::ParseDepLibs() {
336 assert(Lex.getKind() == lltok::kw_deplibs);
338 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
339 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
342 if (EatIfPresent(lltok::rsquare))
347 if (ParseStringConstant(Str)) return true;
348 } while (EatIfPresent(lltok::comma));
350 return ParseToken(lltok::rsquare, "expected ']' at end of list");
353 /// ParseUnnamedType:
354 /// ::= LocalVarID '=' 'type' type
355 bool LLParser::ParseUnnamedType() {
356 LocTy TypeLoc = Lex.getLoc();
357 unsigned TypeID = Lex.getUIntVal();
358 Lex.Lex(); // eat LocalVarID;
360 if (ParseToken(lltok::equal, "expected '=' after name") ||
361 ParseToken(lltok::kw_type, "expected 'type' after '='"))
364 if (TypeID >= NumberedTypes.size())
365 NumberedTypes.resize(TypeID+1);
368 if (ParseStructDefinition(TypeLoc, "",
369 NumberedTypes[TypeID], Result)) return true;
371 if (!isa<StructType>(Result)) {
372 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
374 return Error(TypeLoc, "non-struct types may not be recursive");
375 Entry.first = Result;
376 Entry.second = SMLoc();
384 /// ::= LocalVar '=' 'type' type
385 bool LLParser::ParseNamedType() {
386 std::string Name = Lex.getStrVal();
387 LocTy NameLoc = Lex.getLoc();
388 Lex.Lex(); // eat LocalVar.
390 if (ParseToken(lltok::equal, "expected '=' after name") ||
391 ParseToken(lltok::kw_type, "expected 'type' after name"))
395 if (ParseStructDefinition(NameLoc, Name,
396 NamedTypes[Name], Result)) return true;
398 if (!isa<StructType>(Result)) {
399 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
401 return Error(NameLoc, "non-struct types may not be recursive");
402 Entry.first = Result;
403 Entry.second = SMLoc();
411 /// ::= 'declare' FunctionHeader
412 bool LLParser::ParseDeclare() {
413 assert(Lex.getKind() == lltok::kw_declare);
417 return ParseFunctionHeader(F, false);
421 /// ::= 'define' FunctionHeader '{' ...
422 bool LLParser::ParseDefine() {
423 assert(Lex.getKind() == lltok::kw_define);
427 return ParseFunctionHeader(F, true) ||
428 ParseFunctionBody(*F);
434 bool LLParser::ParseGlobalType(bool &IsConstant) {
435 if (Lex.getKind() == lltok::kw_constant)
437 else if (Lex.getKind() == lltok::kw_global)
441 return TokError("expected 'global' or 'constant'");
447 /// ParseUnnamedGlobal:
448 /// OptionalVisibility ALIAS ...
449 /// OptionalLinkage OptionalVisibility OptionalDLLStorageClass
450 /// ... -> global variable
451 /// GlobalID '=' OptionalVisibility ALIAS ...
452 /// GlobalID '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
453 /// ... -> global variable
454 bool LLParser::ParseUnnamedGlobal() {
455 unsigned VarID = NumberedVals.size();
457 LocTy NameLoc = Lex.getLoc();
459 // Handle the GlobalID form.
460 if (Lex.getKind() == lltok::GlobalID) {
461 if (Lex.getUIntVal() != VarID)
462 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
464 Lex.Lex(); // eat GlobalID;
466 if (ParseToken(lltok::equal, "expected '=' after name"))
471 unsigned Linkage, Visibility, DLLStorageClass;
472 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
473 ParseOptionalVisibility(Visibility) ||
474 ParseOptionalDLLStorageClass(DLLStorageClass))
477 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
478 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
480 return ParseAlias(Name, NameLoc, Visibility, DLLStorageClass);
483 /// ParseNamedGlobal:
484 /// GlobalVar '=' OptionalVisibility ALIAS ...
485 /// GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
486 /// ... -> global variable
487 bool LLParser::ParseNamedGlobal() {
488 assert(Lex.getKind() == lltok::GlobalVar);
489 LocTy NameLoc = Lex.getLoc();
490 std::string Name = Lex.getStrVal();
494 unsigned Linkage, Visibility, DLLStorageClass;
495 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
496 ParseOptionalLinkage(Linkage, HasLinkage) ||
497 ParseOptionalVisibility(Visibility) ||
498 ParseOptionalDLLStorageClass(DLLStorageClass))
501 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
502 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
504 return ParseAlias(Name, NameLoc, Visibility, DLLStorageClass);
508 // ::= '!' STRINGCONSTANT
509 bool LLParser::ParseMDString(MDString *&Result) {
511 if (ParseStringConstant(Str)) return true;
512 Result = MDString::get(Context, Str);
517 // ::= '!' MDNodeNumber
519 /// This version of ParseMDNodeID returns the slot number and null in the case
520 /// of a forward reference.
521 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
522 // !{ ..., !42, ... }
523 if (ParseUInt32(SlotNo)) return true;
525 // Check existing MDNode.
526 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != 0)
527 Result = NumberedMetadata[SlotNo];
533 bool LLParser::ParseMDNodeID(MDNode *&Result) {
534 // !{ ..., !42, ... }
536 if (ParseMDNodeID(Result, MID)) return true;
538 // If not a forward reference, just return it now.
539 if (Result) return false;
541 // Otherwise, create MDNode forward reference.
542 MDNode *FwdNode = MDNode::getTemporary(Context, None);
543 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
545 if (NumberedMetadata.size() <= MID)
546 NumberedMetadata.resize(MID+1);
547 NumberedMetadata[MID] = FwdNode;
552 /// ParseNamedMetadata:
553 /// !foo = !{ !1, !2 }
554 bool LLParser::ParseNamedMetadata() {
555 assert(Lex.getKind() == lltok::MetadataVar);
556 std::string Name = Lex.getStrVal();
559 if (ParseToken(lltok::equal, "expected '=' here") ||
560 ParseToken(lltok::exclaim, "Expected '!' here") ||
561 ParseToken(lltok::lbrace, "Expected '{' here"))
564 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
565 if (Lex.getKind() != lltok::rbrace)
567 if (ParseToken(lltok::exclaim, "Expected '!' here"))
571 if (ParseMDNodeID(N)) return true;
573 } while (EatIfPresent(lltok::comma));
575 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
581 /// ParseStandaloneMetadata:
583 bool LLParser::ParseStandaloneMetadata() {
584 assert(Lex.getKind() == lltok::exclaim);
586 unsigned MetadataID = 0;
590 SmallVector<Value *, 16> Elts;
591 if (ParseUInt32(MetadataID) ||
592 ParseToken(lltok::equal, "expected '=' here") ||
593 ParseType(Ty, TyLoc) ||
594 ParseToken(lltok::exclaim, "Expected '!' here") ||
595 ParseToken(lltok::lbrace, "Expected '{' here") ||
596 ParseMDNodeVector(Elts, NULL) ||
597 ParseToken(lltok::rbrace, "expected end of metadata node"))
600 MDNode *Init = MDNode::get(Context, Elts);
602 // See if this was forward referenced, if so, handle it.
603 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
604 FI = ForwardRefMDNodes.find(MetadataID);
605 if (FI != ForwardRefMDNodes.end()) {
606 MDNode *Temp = FI->second.first;
607 Temp->replaceAllUsesWith(Init);
608 MDNode::deleteTemporary(Temp);
609 ForwardRefMDNodes.erase(FI);
611 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
613 if (MetadataID >= NumberedMetadata.size())
614 NumberedMetadata.resize(MetadataID+1);
616 if (NumberedMetadata[MetadataID] != 0)
617 return TokError("Metadata id is already used");
618 NumberedMetadata[MetadataID] = Init;
625 /// ::= GlobalVar '=' OptionalVisibility OptionalDLLStorageClass 'alias'
626 /// OptionalLinkage Aliasee
629 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
630 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
632 /// Everything through DLL storage class has already been parsed.
634 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
635 unsigned Visibility, unsigned DLLStorageClass) {
636 assert(Lex.getKind() == lltok::kw_alias);
638 LocTy LinkageLoc = Lex.getLoc();
640 if (ParseOptionalLinkage(L))
643 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
645 if(!GlobalAlias::isValidLinkage(Linkage))
646 return Error(LinkageLoc, "invalid linkage type for alias");
649 LocTy AliaseeLoc = Lex.getLoc();
650 if (Lex.getKind() != lltok::kw_bitcast &&
651 Lex.getKind() != lltok::kw_getelementptr) {
652 if (ParseGlobalTypeAndValue(Aliasee)) return true;
654 // The bitcast dest type is not present, it is implied by the dest type.
656 if (ParseValID(ID)) return true;
657 if (ID.Kind != ValID::t_Constant)
658 return Error(AliaseeLoc, "invalid aliasee");
659 Aliasee = ID.ConstantVal;
662 if (!Aliasee->getType()->isPointerTy())
663 return Error(AliaseeLoc, "alias must have pointer type");
665 // Okay, create the alias but do not insert it into the module yet.
666 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
667 (GlobalValue::LinkageTypes)Linkage, Name,
669 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
670 GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
672 // See if this value already exists in the symbol table. If so, it is either
673 // a redefinition or a definition of a forward reference.
674 if (GlobalValue *Val = M->getNamedValue(Name)) {
675 // See if this was a redefinition. If so, there is no entry in
677 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
678 I = ForwardRefVals.find(Name);
679 if (I == ForwardRefVals.end())
680 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
682 // Otherwise, this was a definition of forward ref. Verify that types
684 if (Val->getType() != GA->getType())
685 return Error(NameLoc,
686 "forward reference and definition of alias have different types");
688 // If they agree, just RAUW the old value with the alias and remove the
690 Val->replaceAllUsesWith(GA);
691 Val->eraseFromParent();
692 ForwardRefVals.erase(I);
695 // Insert into the module, we know its name won't collide now.
696 M->getAliasList().push_back(GA);
697 assert(GA->getName() == Name && "Should not be a name conflict!");
703 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
704 /// OptionalThreadLocal OptionalAddrSpace OptionalUnNammedAddr
705 /// OptionalExternallyInitialized GlobalType Type Const
706 /// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
707 /// OptionalThreadLocal OptionalAddrSpace OptionalUnNammedAddr
708 /// OptionalExternallyInitialized GlobalType Type Const
710 /// Everything through visibility has been parsed already.
712 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
713 unsigned Linkage, bool HasLinkage,
714 unsigned Visibility, unsigned DLLStorageClass) {
716 bool IsConstant, UnnamedAddr, IsExternallyInitialized;
717 GlobalVariable::ThreadLocalMode TLM;
718 LocTy UnnamedAddrLoc;
719 LocTy IsExternallyInitializedLoc;
723 if (ParseOptionalThreadLocal(TLM) ||
724 ParseOptionalAddrSpace(AddrSpace) ||
725 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
727 ParseOptionalToken(lltok::kw_externally_initialized,
728 IsExternallyInitialized,
729 &IsExternallyInitializedLoc) ||
730 ParseGlobalType(IsConstant) ||
731 ParseType(Ty, TyLoc))
734 // If the linkage is specified and is external, then no initializer is
737 if (!HasLinkage || (Linkage != GlobalValue::ExternalWeakLinkage &&
738 Linkage != GlobalValue::ExternalLinkage)) {
739 if (ParseGlobalValue(Ty, Init))
743 if (Ty->isFunctionTy() || Ty->isLabelTy())
744 return Error(TyLoc, "invalid type for global variable");
746 GlobalVariable *GV = 0;
748 // See if the global was forward referenced, if so, use the global.
750 if (GlobalValue *GVal = M->getNamedValue(Name)) {
751 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
752 return Error(NameLoc, "redefinition of global '@" + Name + "'");
753 GV = cast<GlobalVariable>(GVal);
756 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
757 I = ForwardRefValIDs.find(NumberedVals.size());
758 if (I != ForwardRefValIDs.end()) {
759 GV = cast<GlobalVariable>(I->second.first);
760 ForwardRefValIDs.erase(I);
765 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
766 Name, 0, GlobalVariable::NotThreadLocal,
769 if (GV->getType()->getElementType() != Ty)
771 "forward reference and definition of global have different types");
773 // Move the forward-reference to the correct spot in the module.
774 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
778 NumberedVals.push_back(GV);
780 // Set the parsed properties on the global.
782 GV->setInitializer(Init);
783 GV->setConstant(IsConstant);
784 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
785 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
786 GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
787 GV->setExternallyInitialized(IsExternallyInitialized);
788 GV->setThreadLocalMode(TLM);
789 GV->setUnnamedAddr(UnnamedAddr);
791 // Parse attributes on the global.
792 while (Lex.getKind() == lltok::comma) {
795 if (Lex.getKind() == lltok::kw_section) {
797 GV->setSection(Lex.getStrVal());
798 if (ParseToken(lltok::StringConstant, "expected global section string"))
800 } else if (Lex.getKind() == lltok::kw_align) {
802 if (ParseOptionalAlignment(Alignment)) return true;
803 GV->setAlignment(Alignment);
805 TokError("unknown global variable property!");
812 /// ParseUnnamedAttrGrp
813 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
814 bool LLParser::ParseUnnamedAttrGrp() {
815 assert(Lex.getKind() == lltok::kw_attributes);
816 LocTy AttrGrpLoc = Lex.getLoc();
819 assert(Lex.getKind() == lltok::AttrGrpID);
820 unsigned VarID = Lex.getUIntVal();
821 std::vector<unsigned> unused;
825 if (ParseToken(lltok::equal, "expected '=' here") ||
826 ParseToken(lltok::lbrace, "expected '{' here") ||
827 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
829 ParseToken(lltok::rbrace, "expected end of attribute group"))
832 if (!NumberedAttrBuilders[VarID].hasAttributes())
833 return Error(AttrGrpLoc, "attribute group has no attributes");
838 /// ParseFnAttributeValuePairs
839 /// ::= <attr> | <attr> '=' <value>
840 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
841 std::vector<unsigned> &FwdRefAttrGrps,
842 bool inAttrGrp, LocTy &BuiltinLoc) {
843 bool HaveError = false;
848 lltok::Kind Token = Lex.getKind();
849 if (Token == lltok::kw_builtin)
850 BuiltinLoc = Lex.getLoc();
853 if (!inAttrGrp) return HaveError;
854 return Error(Lex.getLoc(), "unterminated attribute group");
859 case lltok::AttrGrpID: {
860 // Allow a function to reference an attribute group:
862 // define void @foo() #1 { ... }
866 "cannot have an attribute group reference in an attribute group");
868 unsigned AttrGrpNum = Lex.getUIntVal();
869 if (inAttrGrp) break;
871 // Save the reference to the attribute group. We'll fill it in later.
872 FwdRefAttrGrps.push_back(AttrGrpNum);
875 // Target-dependent attributes:
876 case lltok::StringConstant: {
877 std::string Attr = Lex.getStrVal();
880 if (EatIfPresent(lltok::equal) &&
881 ParseStringConstant(Val))
884 B.addAttribute(Attr, Val);
888 // Target-independent attributes:
889 case lltok::kw_align: {
890 // As a hack, we allow function alignment to be initially parsed as an
891 // attribute on a function declaration/definition or added to an attribute
892 // group and later moved to the alignment field.
896 if (ParseToken(lltok::equal, "expected '=' here") ||
897 ParseUInt32(Alignment))
900 if (ParseOptionalAlignment(Alignment))
903 B.addAlignmentAttr(Alignment);
906 case lltok::kw_alignstack: {
910 if (ParseToken(lltok::equal, "expected '=' here") ||
911 ParseUInt32(Alignment))
914 if (ParseOptionalStackAlignment(Alignment))
917 B.addStackAlignmentAttr(Alignment);
920 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
921 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
922 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
923 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
924 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
925 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
926 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
927 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
928 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
929 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
930 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
931 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
932 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
933 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
934 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
935 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
936 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
937 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
938 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
939 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
940 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
941 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
942 case lltok::kw_sanitize_address: B.addAttribute(Attribute::SanitizeAddress); break;
943 case lltok::kw_sanitize_thread: B.addAttribute(Attribute::SanitizeThread); break;
944 case lltok::kw_sanitize_memory: B.addAttribute(Attribute::SanitizeMemory); break;
945 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
948 case lltok::kw_inreg:
949 case lltok::kw_signext:
950 case lltok::kw_zeroext:
953 "invalid use of attribute on a function");
955 case lltok::kw_byval:
956 case lltok::kw_inalloca:
958 case lltok::kw_noalias:
959 case lltok::kw_nocapture:
960 case lltok::kw_returned:
964 "invalid use of parameter-only attribute on a function");
972 //===----------------------------------------------------------------------===//
973 // GlobalValue Reference/Resolution Routines.
974 //===----------------------------------------------------------------------===//
976 /// GetGlobalVal - Get a value with the specified name or ID, creating a
977 /// forward reference record if needed. This can return null if the value
978 /// exists but does not have the right type.
979 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
981 PointerType *PTy = dyn_cast<PointerType>(Ty);
983 Error(Loc, "global variable reference must have pointer type");
987 // Look this name up in the normal function symbol table.
989 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
991 // If this is a forward reference for the value, see if we already created a
992 // forward ref record.
994 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
995 I = ForwardRefVals.find(Name);
996 if (I != ForwardRefVals.end())
997 Val = I->second.first;
1000 // If we have the value in the symbol table or fwd-ref table, return it.
1002 if (Val->getType() == Ty) return Val;
1003 Error(Loc, "'@" + Name + "' defined with type '" +
1004 getTypeString(Val->getType()) + "'");
1008 // Otherwise, create a new forward reference for this value and remember it.
1009 GlobalValue *FwdVal;
1010 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1011 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1013 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1014 GlobalValue::ExternalWeakLinkage, 0, Name,
1015 0, GlobalVariable::NotThreadLocal,
1016 PTy->getAddressSpace());
1018 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1022 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1023 PointerType *PTy = dyn_cast<PointerType>(Ty);
1025 Error(Loc, "global variable reference must have pointer type");
1029 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1031 // If this is a forward reference for the value, see if we already created a
1032 // forward ref record.
1034 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1035 I = ForwardRefValIDs.find(ID);
1036 if (I != ForwardRefValIDs.end())
1037 Val = I->second.first;
1040 // If we have the value in the symbol table or fwd-ref table, return it.
1042 if (Val->getType() == Ty) return Val;
1043 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1044 getTypeString(Val->getType()) + "'");
1048 // Otherwise, create a new forward reference for this value and remember it.
1049 GlobalValue *FwdVal;
1050 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1051 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1053 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1054 GlobalValue::ExternalWeakLinkage, 0, "");
1056 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1061 //===----------------------------------------------------------------------===//
1063 //===----------------------------------------------------------------------===//
1065 /// ParseToken - If the current token has the specified kind, eat it and return
1066 /// success. Otherwise, emit the specified error and return failure.
1067 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1068 if (Lex.getKind() != T)
1069 return TokError(ErrMsg);
1074 /// ParseStringConstant
1075 /// ::= StringConstant
1076 bool LLParser::ParseStringConstant(std::string &Result) {
1077 if (Lex.getKind() != lltok::StringConstant)
1078 return TokError("expected string constant");
1079 Result = Lex.getStrVal();
1086 bool LLParser::ParseUInt32(unsigned &Val) {
1087 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1088 return TokError("expected integer");
1089 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1090 if (Val64 != unsigned(Val64))
1091 return TokError("expected 32-bit integer (too large)");
1098 /// := 'localdynamic'
1099 /// := 'initialexec'
1101 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1102 switch (Lex.getKind()) {
1104 return TokError("expected localdynamic, initialexec or localexec");
1105 case lltok::kw_localdynamic:
1106 TLM = GlobalVariable::LocalDynamicTLSModel;
1108 case lltok::kw_initialexec:
1109 TLM = GlobalVariable::InitialExecTLSModel;
1111 case lltok::kw_localexec:
1112 TLM = GlobalVariable::LocalExecTLSModel;
1120 /// ParseOptionalThreadLocal
1122 /// := 'thread_local'
1123 /// := 'thread_local' '(' tlsmodel ')'
1124 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1125 TLM = GlobalVariable::NotThreadLocal;
1126 if (!EatIfPresent(lltok::kw_thread_local))
1129 TLM = GlobalVariable::GeneralDynamicTLSModel;
1130 if (Lex.getKind() == lltok::lparen) {
1132 return ParseTLSModel(TLM) ||
1133 ParseToken(lltok::rparen, "expected ')' after thread local model");
1138 /// ParseOptionalAddrSpace
1140 /// := 'addrspace' '(' uint32 ')'
1141 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1143 if (!EatIfPresent(lltok::kw_addrspace))
1145 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1146 ParseUInt32(AddrSpace) ||
1147 ParseToken(lltok::rparen, "expected ')' in address space");
1150 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1151 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1152 bool HaveError = false;
1157 lltok::Kind Token = Lex.getKind();
1159 default: // End of attributes.
1161 case lltok::kw_align: {
1163 if (ParseOptionalAlignment(Alignment))
1165 B.addAlignmentAttr(Alignment);
1168 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1169 case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1170 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1171 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1172 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1173 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1174 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1175 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1176 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1177 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1178 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1179 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1181 case lltok::kw_alignstack:
1182 case lltok::kw_alwaysinline:
1183 case lltok::kw_builtin:
1184 case lltok::kw_inlinehint:
1185 case lltok::kw_minsize:
1186 case lltok::kw_naked:
1187 case lltok::kw_nobuiltin:
1188 case lltok::kw_noduplicate:
1189 case lltok::kw_noimplicitfloat:
1190 case lltok::kw_noinline:
1191 case lltok::kw_nonlazybind:
1192 case lltok::kw_noredzone:
1193 case lltok::kw_noreturn:
1194 case lltok::kw_nounwind:
1195 case lltok::kw_optnone:
1196 case lltok::kw_optsize:
1197 case lltok::kw_returns_twice:
1198 case lltok::kw_sanitize_address:
1199 case lltok::kw_sanitize_memory:
1200 case lltok::kw_sanitize_thread:
1202 case lltok::kw_sspreq:
1203 case lltok::kw_sspstrong:
1204 case lltok::kw_uwtable:
1205 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1213 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1214 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1215 bool HaveError = false;
1220 lltok::Kind Token = Lex.getKind();
1222 default: // End of attributes.
1224 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1225 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1226 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1227 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1230 case lltok::kw_align:
1231 case lltok::kw_byval:
1232 case lltok::kw_inalloca:
1233 case lltok::kw_nest:
1234 case lltok::kw_nocapture:
1235 case lltok::kw_returned:
1236 case lltok::kw_sret:
1237 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1240 case lltok::kw_alignstack:
1241 case lltok::kw_alwaysinline:
1242 case lltok::kw_builtin:
1243 case lltok::kw_cold:
1244 case lltok::kw_inlinehint:
1245 case lltok::kw_minsize:
1246 case lltok::kw_naked:
1247 case lltok::kw_nobuiltin:
1248 case lltok::kw_noduplicate:
1249 case lltok::kw_noimplicitfloat:
1250 case lltok::kw_noinline:
1251 case lltok::kw_nonlazybind:
1252 case lltok::kw_noredzone:
1253 case lltok::kw_noreturn:
1254 case lltok::kw_nounwind:
1255 case lltok::kw_optnone:
1256 case lltok::kw_optsize:
1257 case lltok::kw_returns_twice:
1258 case lltok::kw_sanitize_address:
1259 case lltok::kw_sanitize_memory:
1260 case lltok::kw_sanitize_thread:
1262 case lltok::kw_sspreq:
1263 case lltok::kw_sspstrong:
1264 case lltok::kw_uwtable:
1265 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1268 case lltok::kw_readnone:
1269 case lltok::kw_readonly:
1270 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1277 /// ParseOptionalLinkage
1280 /// ::= 'linker_private'
1281 /// ::= 'linker_private_weak'
1286 /// ::= 'linkonce_odr'
1287 /// ::= 'available_externally'
1290 /// ::= 'extern_weak'
1292 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1294 switch (Lex.getKind()) {
1295 default: Res=GlobalValue::ExternalLinkage; return false;
1296 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1297 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1298 case lltok::kw_linker_private_weak:
1299 Res = GlobalValue::LinkerPrivateWeakLinkage;
1301 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1302 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1303 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1304 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1305 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1306 case lltok::kw_available_externally:
1307 Res = GlobalValue::AvailableExternallyLinkage;
1309 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1310 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1311 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1312 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1319 /// ParseOptionalVisibility
1325 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1326 switch (Lex.getKind()) {
1327 default: Res = GlobalValue::DefaultVisibility; return false;
1328 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1329 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1330 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1336 /// ParseOptionalDLLStorageClass
1341 bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1342 switch (Lex.getKind()) {
1343 default: Res = GlobalValue::DefaultStorageClass; return false;
1344 case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1345 case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1351 /// ParseOptionalCallingConv
1355 /// ::= 'kw_intel_ocl_bicc'
1357 /// ::= 'x86_stdcallcc'
1358 /// ::= 'x86_fastcallcc'
1359 /// ::= 'x86_thiscallcc'
1360 /// ::= 'arm_apcscc'
1361 /// ::= 'arm_aapcscc'
1362 /// ::= 'arm_aapcs_vfpcc'
1363 /// ::= 'msp430_intrcc'
1364 /// ::= 'ptx_kernel'
1365 /// ::= 'ptx_device'
1367 /// ::= 'spir_kernel'
1368 /// ::= 'x86_64_sysvcc'
1369 /// ::= 'x86_64_win64cc'
1370 /// ::= 'webkit_jscc'
1372 /// ::= 'preserve_mostcc'
1373 /// ::= 'preserve_allcc'
1376 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1377 switch (Lex.getKind()) {
1378 default: CC = CallingConv::C; return false;
1379 case lltok::kw_ccc: CC = CallingConv::C; break;
1380 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1381 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1382 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1383 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1384 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1385 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1386 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1387 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1388 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1389 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1390 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1391 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1392 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1393 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1394 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1395 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1396 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1397 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1398 case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1399 case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1400 case lltok::kw_cc: {
1401 unsigned ArbitraryCC;
1403 if (ParseUInt32(ArbitraryCC))
1405 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1414 /// ParseInstructionMetadata
1415 /// ::= !dbg !42 (',' !dbg !57)*
1416 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1417 PerFunctionState *PFS) {
1419 if (Lex.getKind() != lltok::MetadataVar)
1420 return TokError("expected metadata after comma");
1422 std::string Name = Lex.getStrVal();
1423 unsigned MDK = M->getMDKindID(Name);
1427 SMLoc Loc = Lex.getLoc();
1429 if (ParseToken(lltok::exclaim, "expected '!' here"))
1432 // This code is similar to that of ParseMetadataValue, however it needs to
1433 // have special-case code for a forward reference; see the comments on
1434 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1435 // at the top level here.
1436 if (Lex.getKind() == lltok::lbrace) {
1438 if (ParseMetadataListValue(ID, PFS))
1440 assert(ID.Kind == ValID::t_MDNode);
1441 Inst->setMetadata(MDK, ID.MDNodeVal);
1443 unsigned NodeID = 0;
1444 if (ParseMDNodeID(Node, NodeID))
1447 // If we got the node, add it to the instruction.
1448 Inst->setMetadata(MDK, Node);
1450 MDRef R = { Loc, MDK, NodeID };
1451 // Otherwise, remember that this should be resolved later.
1452 ForwardRefInstMetadata[Inst].push_back(R);
1456 if (MDK == LLVMContext::MD_tbaa)
1457 InstsWithTBAATag.push_back(Inst);
1459 // If this is the end of the list, we're done.
1460 } while (EatIfPresent(lltok::comma));
1464 /// ParseOptionalAlignment
1467 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1469 if (!EatIfPresent(lltok::kw_align))
1471 LocTy AlignLoc = Lex.getLoc();
1472 if (ParseUInt32(Alignment)) return true;
1473 if (!isPowerOf2_32(Alignment))
1474 return Error(AlignLoc, "alignment is not a power of two");
1475 if (Alignment > Value::MaximumAlignment)
1476 return Error(AlignLoc, "huge alignments are not supported yet");
1480 /// ParseOptionalCommaAlign
1484 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1486 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1487 bool &AteExtraComma) {
1488 AteExtraComma = false;
1489 while (EatIfPresent(lltok::comma)) {
1490 // Metadata at the end is an early exit.
1491 if (Lex.getKind() == lltok::MetadataVar) {
1492 AteExtraComma = true;
1496 if (Lex.getKind() != lltok::kw_align)
1497 return Error(Lex.getLoc(), "expected metadata or 'align'");
1499 if (ParseOptionalAlignment(Alignment)) return true;
1505 /// ParseScopeAndOrdering
1506 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1509 /// This sets Scope and Ordering to the parsed values.
1510 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1511 AtomicOrdering &Ordering) {
1515 Scope = CrossThread;
1516 if (EatIfPresent(lltok::kw_singlethread))
1517 Scope = SingleThread;
1518 switch (Lex.getKind()) {
1519 default: return TokError("Expected ordering on atomic instruction");
1520 case lltok::kw_unordered: Ordering = Unordered; break;
1521 case lltok::kw_monotonic: Ordering = Monotonic; break;
1522 case lltok::kw_acquire: Ordering = Acquire; break;
1523 case lltok::kw_release: Ordering = Release; break;
1524 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1525 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1531 /// ParseOptionalStackAlignment
1533 /// ::= 'alignstack' '(' 4 ')'
1534 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1536 if (!EatIfPresent(lltok::kw_alignstack))
1538 LocTy ParenLoc = Lex.getLoc();
1539 if (!EatIfPresent(lltok::lparen))
1540 return Error(ParenLoc, "expected '('");
1541 LocTy AlignLoc = Lex.getLoc();
1542 if (ParseUInt32(Alignment)) return true;
1543 ParenLoc = Lex.getLoc();
1544 if (!EatIfPresent(lltok::rparen))
1545 return Error(ParenLoc, "expected ')'");
1546 if (!isPowerOf2_32(Alignment))
1547 return Error(AlignLoc, "stack alignment is not a power of two");
1551 /// ParseIndexList - This parses the index list for an insert/extractvalue
1552 /// instruction. This sets AteExtraComma in the case where we eat an extra
1553 /// comma at the end of the line and find that it is followed by metadata.
1554 /// Clients that don't allow metadata can call the version of this function that
1555 /// only takes one argument.
1558 /// ::= (',' uint32)+
1560 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1561 bool &AteExtraComma) {
1562 AteExtraComma = false;
1564 if (Lex.getKind() != lltok::comma)
1565 return TokError("expected ',' as start of index list");
1567 while (EatIfPresent(lltok::comma)) {
1568 if (Lex.getKind() == lltok::MetadataVar) {
1569 AteExtraComma = true;
1573 if (ParseUInt32(Idx)) return true;
1574 Indices.push_back(Idx);
1580 //===----------------------------------------------------------------------===//
1582 //===----------------------------------------------------------------------===//
1584 /// ParseType - Parse a type.
1585 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1586 SMLoc TypeLoc = Lex.getLoc();
1587 switch (Lex.getKind()) {
1589 return TokError("expected type");
1591 // Type ::= 'float' | 'void' (etc)
1592 Result = Lex.getTyVal();
1596 // Type ::= StructType
1597 if (ParseAnonStructType(Result, false))
1600 case lltok::lsquare:
1601 // Type ::= '[' ... ']'
1602 Lex.Lex(); // eat the lsquare.
1603 if (ParseArrayVectorType(Result, false))
1606 case lltok::less: // Either vector or packed struct.
1607 // Type ::= '<' ... '>'
1609 if (Lex.getKind() == lltok::lbrace) {
1610 if (ParseAnonStructType(Result, true) ||
1611 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1613 } else if (ParseArrayVectorType(Result, true))
1616 case lltok::LocalVar: {
1618 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1620 // If the type hasn't been defined yet, create a forward definition and
1621 // remember where that forward def'n was seen (in case it never is defined).
1622 if (Entry.first == 0) {
1623 Entry.first = StructType::create(Context, Lex.getStrVal());
1624 Entry.second = Lex.getLoc();
1626 Result = Entry.first;
1631 case lltok::LocalVarID: {
1633 if (Lex.getUIntVal() >= NumberedTypes.size())
1634 NumberedTypes.resize(Lex.getUIntVal()+1);
1635 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1637 // If the type hasn't been defined yet, create a forward definition and
1638 // remember where that forward def'n was seen (in case it never is defined).
1639 if (Entry.first == 0) {
1640 Entry.first = StructType::create(Context);
1641 Entry.second = Lex.getLoc();
1643 Result = Entry.first;
1649 // Parse the type suffixes.
1651 switch (Lex.getKind()) {
1654 if (!AllowVoid && Result->isVoidTy())
1655 return Error(TypeLoc, "void type only allowed for function results");
1658 // Type ::= Type '*'
1660 if (Result->isLabelTy())
1661 return TokError("basic block pointers are invalid");
1662 if (Result->isVoidTy())
1663 return TokError("pointers to void are invalid - use i8* instead");
1664 if (!PointerType::isValidElementType(Result))
1665 return TokError("pointer to this type is invalid");
1666 Result = PointerType::getUnqual(Result);
1670 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1671 case lltok::kw_addrspace: {
1672 if (Result->isLabelTy())
1673 return TokError("basic block pointers are invalid");
1674 if (Result->isVoidTy())
1675 return TokError("pointers to void are invalid; use i8* instead");
1676 if (!PointerType::isValidElementType(Result))
1677 return TokError("pointer to this type is invalid");
1679 if (ParseOptionalAddrSpace(AddrSpace) ||
1680 ParseToken(lltok::star, "expected '*' in address space"))
1683 Result = PointerType::get(Result, AddrSpace);
1687 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1689 if (ParseFunctionType(Result))
1696 /// ParseParameterList
1698 /// ::= '(' Arg (',' Arg)* ')'
1700 /// ::= Type OptionalAttributes Value OptionalAttributes
1701 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1702 PerFunctionState &PFS) {
1703 if (ParseToken(lltok::lparen, "expected '(' in call"))
1706 unsigned AttrIndex = 1;
1707 while (Lex.getKind() != lltok::rparen) {
1708 // If this isn't the first argument, we need a comma.
1709 if (!ArgList.empty() &&
1710 ParseToken(lltok::comma, "expected ',' in argument list"))
1713 // Parse the argument.
1716 AttrBuilder ArgAttrs;
1718 if (ParseType(ArgTy, ArgLoc))
1721 // Otherwise, handle normal operands.
1722 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1724 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1729 Lex.Lex(); // Lex the ')'.
1735 /// ParseArgumentList - Parse the argument list for a function type or function
1737 /// ::= '(' ArgTypeListI ')'
1741 /// ::= ArgTypeList ',' '...'
1742 /// ::= ArgType (',' ArgType)*
1744 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1747 assert(Lex.getKind() == lltok::lparen);
1748 Lex.Lex(); // eat the (.
1750 if (Lex.getKind() == lltok::rparen) {
1752 } else if (Lex.getKind() == lltok::dotdotdot) {
1756 LocTy TypeLoc = Lex.getLoc();
1761 if (ParseType(ArgTy) ||
1762 ParseOptionalParamAttrs(Attrs)) return true;
1764 if (ArgTy->isVoidTy())
1765 return Error(TypeLoc, "argument can not have void type");
1767 if (Lex.getKind() == lltok::LocalVar) {
1768 Name = Lex.getStrVal();
1772 if (!FunctionType::isValidArgumentType(ArgTy))
1773 return Error(TypeLoc, "invalid type for function argument");
1775 unsigned AttrIndex = 1;
1776 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1777 AttributeSet::get(ArgTy->getContext(),
1778 AttrIndex++, Attrs), Name));
1780 while (EatIfPresent(lltok::comma)) {
1781 // Handle ... at end of arg list.
1782 if (EatIfPresent(lltok::dotdotdot)) {
1787 // Otherwise must be an argument type.
1788 TypeLoc = Lex.getLoc();
1789 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1791 if (ArgTy->isVoidTy())
1792 return Error(TypeLoc, "argument can not have void type");
1794 if (Lex.getKind() == lltok::LocalVar) {
1795 Name = Lex.getStrVal();
1801 if (!ArgTy->isFirstClassType())
1802 return Error(TypeLoc, "invalid type for function argument");
1804 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1805 AttributeSet::get(ArgTy->getContext(),
1806 AttrIndex++, Attrs),
1811 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1814 /// ParseFunctionType
1815 /// ::= Type ArgumentList OptionalAttrs
1816 bool LLParser::ParseFunctionType(Type *&Result) {
1817 assert(Lex.getKind() == lltok::lparen);
1819 if (!FunctionType::isValidReturnType(Result))
1820 return TokError("invalid function return type");
1822 SmallVector<ArgInfo, 8> ArgList;
1824 if (ParseArgumentList(ArgList, isVarArg))
1827 // Reject names on the arguments lists.
1828 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1829 if (!ArgList[i].Name.empty())
1830 return Error(ArgList[i].Loc, "argument name invalid in function type");
1831 if (ArgList[i].Attrs.hasAttributes(i + 1))
1832 return Error(ArgList[i].Loc,
1833 "argument attributes invalid in function type");
1836 SmallVector<Type*, 16> ArgListTy;
1837 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1838 ArgListTy.push_back(ArgList[i].Ty);
1840 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1844 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1846 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1847 SmallVector<Type*, 8> Elts;
1848 if (ParseStructBody(Elts)) return true;
1850 Result = StructType::get(Context, Elts, Packed);
1854 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1855 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1856 std::pair<Type*, LocTy> &Entry,
1858 // If the type was already defined, diagnose the redefinition.
1859 if (Entry.first && !Entry.second.isValid())
1860 return Error(TypeLoc, "redefinition of type");
1862 // If we have opaque, just return without filling in the definition for the
1863 // struct. This counts as a definition as far as the .ll file goes.
1864 if (EatIfPresent(lltok::kw_opaque)) {
1865 // This type is being defined, so clear the location to indicate this.
1866 Entry.second = SMLoc();
1868 // If this type number has never been uttered, create it.
1869 if (Entry.first == 0)
1870 Entry.first = StructType::create(Context, Name);
1871 ResultTy = Entry.first;
1875 // If the type starts with '<', then it is either a packed struct or a vector.
1876 bool isPacked = EatIfPresent(lltok::less);
1878 // If we don't have a struct, then we have a random type alias, which we
1879 // accept for compatibility with old files. These types are not allowed to be
1880 // forward referenced and not allowed to be recursive.
1881 if (Lex.getKind() != lltok::lbrace) {
1883 return Error(TypeLoc, "forward references to non-struct type");
1887 return ParseArrayVectorType(ResultTy, true);
1888 return ParseType(ResultTy);
1891 // This type is being defined, so clear the location to indicate this.
1892 Entry.second = SMLoc();
1894 // If this type number has never been uttered, create it.
1895 if (Entry.first == 0)
1896 Entry.first = StructType::create(Context, Name);
1898 StructType *STy = cast<StructType>(Entry.first);
1900 SmallVector<Type*, 8> Body;
1901 if (ParseStructBody(Body) ||
1902 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
1905 STy->setBody(Body, isPacked);
1911 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1914 /// ::= '{' Type (',' Type)* '}'
1915 /// ::= '<' '{' '}' '>'
1916 /// ::= '<' '{' Type (',' Type)* '}' '>'
1917 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
1918 assert(Lex.getKind() == lltok::lbrace);
1919 Lex.Lex(); // Consume the '{'
1921 // Handle the empty struct.
1922 if (EatIfPresent(lltok::rbrace))
1925 LocTy EltTyLoc = Lex.getLoc();
1927 if (ParseType(Ty)) return true;
1930 if (!StructType::isValidElementType(Ty))
1931 return Error(EltTyLoc, "invalid element type for struct");
1933 while (EatIfPresent(lltok::comma)) {
1934 EltTyLoc = Lex.getLoc();
1935 if (ParseType(Ty)) return true;
1937 if (!StructType::isValidElementType(Ty))
1938 return Error(EltTyLoc, "invalid element type for struct");
1943 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
1946 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1947 /// token has already been consumed.
1949 /// ::= '[' APSINTVAL 'x' Types ']'
1950 /// ::= '<' APSINTVAL 'x' Types '>'
1951 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
1952 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1953 Lex.getAPSIntVal().getBitWidth() > 64)
1954 return TokError("expected number in address space");
1956 LocTy SizeLoc = Lex.getLoc();
1957 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1960 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1963 LocTy TypeLoc = Lex.getLoc();
1965 if (ParseType(EltTy)) return true;
1967 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1968 "expected end of sequential type"))
1973 return Error(SizeLoc, "zero element vector is illegal");
1974 if ((unsigned)Size != Size)
1975 return Error(SizeLoc, "size too large for vector");
1976 if (!VectorType::isValidElementType(EltTy))
1977 return Error(TypeLoc, "invalid vector element type");
1978 Result = VectorType::get(EltTy, unsigned(Size));
1980 if (!ArrayType::isValidElementType(EltTy))
1981 return Error(TypeLoc, "invalid array element type");
1982 Result = ArrayType::get(EltTy, Size);
1987 //===----------------------------------------------------------------------===//
1988 // Function Semantic Analysis.
1989 //===----------------------------------------------------------------------===//
1991 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1993 : P(p), F(f), FunctionNumber(functionNumber) {
1995 // Insert unnamed arguments into the NumberedVals list.
1996 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1999 NumberedVals.push_back(AI);
2002 LLParser::PerFunctionState::~PerFunctionState() {
2003 // If there were any forward referenced non-basicblock values, delete them.
2004 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
2005 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
2006 if (!isa<BasicBlock>(I->second.first)) {
2007 I->second.first->replaceAllUsesWith(
2008 UndefValue::get(I->second.first->getType()));
2009 delete I->second.first;
2010 I->second.first = 0;
2013 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2014 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
2015 if (!isa<BasicBlock>(I->second.first)) {
2016 I->second.first->replaceAllUsesWith(
2017 UndefValue::get(I->second.first->getType()));
2018 delete I->second.first;
2019 I->second.first = 0;
2023 bool LLParser::PerFunctionState::FinishFunction() {
2024 // Check to see if someone took the address of labels in this block.
2025 if (!P.ForwardRefBlockAddresses.empty()) {
2027 if (!F.getName().empty()) {
2028 FunctionID.Kind = ValID::t_GlobalName;
2029 FunctionID.StrVal = F.getName();
2031 FunctionID.Kind = ValID::t_GlobalID;
2032 FunctionID.UIntVal = FunctionNumber;
2035 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
2036 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
2037 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
2038 // Resolve all these references.
2039 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
2042 P.ForwardRefBlockAddresses.erase(FRBAI);
2046 if (!ForwardRefVals.empty())
2047 return P.Error(ForwardRefVals.begin()->second.second,
2048 "use of undefined value '%" + ForwardRefVals.begin()->first +
2050 if (!ForwardRefValIDs.empty())
2051 return P.Error(ForwardRefValIDs.begin()->second.second,
2052 "use of undefined value '%" +
2053 Twine(ForwardRefValIDs.begin()->first) + "'");
2058 /// GetVal - Get a value with the specified name or ID, creating a
2059 /// forward reference record if needed. This can return null if the value
2060 /// exists but does not have the right type.
2061 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2062 Type *Ty, LocTy Loc) {
2063 // Look this name up in the normal function symbol table.
2064 Value *Val = F.getValueSymbolTable().lookup(Name);
2066 // If this is a forward reference for the value, see if we already created a
2067 // forward ref record.
2069 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2070 I = ForwardRefVals.find(Name);
2071 if (I != ForwardRefVals.end())
2072 Val = I->second.first;
2075 // If we have the value in the symbol table or fwd-ref table, return it.
2077 if (Val->getType() == Ty) return Val;
2078 if (Ty->isLabelTy())
2079 P.Error(Loc, "'%" + Name + "' is not a basic block");
2081 P.Error(Loc, "'%" + Name + "' defined with type '" +
2082 getTypeString(Val->getType()) + "'");
2086 // Don't make placeholders with invalid type.
2087 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2088 P.Error(Loc, "invalid use of a non-first-class type");
2092 // Otherwise, create a new forward reference for this value and remember it.
2094 if (Ty->isLabelTy())
2095 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2097 FwdVal = new Argument(Ty, Name);
2099 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2103 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2105 // Look this name up in the normal function symbol table.
2106 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
2108 // If this is a forward reference for the value, see if we already created a
2109 // forward ref record.
2111 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2112 I = ForwardRefValIDs.find(ID);
2113 if (I != ForwardRefValIDs.end())
2114 Val = I->second.first;
2117 // If we have the value in the symbol table or fwd-ref table, return it.
2119 if (Val->getType() == Ty) return Val;
2120 if (Ty->isLabelTy())
2121 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2123 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2124 getTypeString(Val->getType()) + "'");
2128 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2129 P.Error(Loc, "invalid use of a non-first-class type");
2133 // Otherwise, create a new forward reference for this value and remember it.
2135 if (Ty->isLabelTy())
2136 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2138 FwdVal = new Argument(Ty);
2140 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2144 /// SetInstName - After an instruction is parsed and inserted into its
2145 /// basic block, this installs its name.
2146 bool LLParser::PerFunctionState::SetInstName(int NameID,
2147 const std::string &NameStr,
2148 LocTy NameLoc, Instruction *Inst) {
2149 // If this instruction has void type, it cannot have a name or ID specified.
2150 if (Inst->getType()->isVoidTy()) {
2151 if (NameID != -1 || !NameStr.empty())
2152 return P.Error(NameLoc, "instructions returning void cannot have a name");
2156 // If this was a numbered instruction, verify that the instruction is the
2157 // expected value and resolve any forward references.
2158 if (NameStr.empty()) {
2159 // If neither a name nor an ID was specified, just use the next ID.
2161 NameID = NumberedVals.size();
2163 if (unsigned(NameID) != NumberedVals.size())
2164 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2165 Twine(NumberedVals.size()) + "'");
2167 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2168 ForwardRefValIDs.find(NameID);
2169 if (FI != ForwardRefValIDs.end()) {
2170 if (FI->second.first->getType() != Inst->getType())
2171 return P.Error(NameLoc, "instruction forward referenced with type '" +
2172 getTypeString(FI->second.first->getType()) + "'");
2173 FI->second.first->replaceAllUsesWith(Inst);
2174 delete FI->second.first;
2175 ForwardRefValIDs.erase(FI);
2178 NumberedVals.push_back(Inst);
2182 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2183 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2184 FI = ForwardRefVals.find(NameStr);
2185 if (FI != ForwardRefVals.end()) {
2186 if (FI->second.first->getType() != Inst->getType())
2187 return P.Error(NameLoc, "instruction forward referenced with type '" +
2188 getTypeString(FI->second.first->getType()) + "'");
2189 FI->second.first->replaceAllUsesWith(Inst);
2190 delete FI->second.first;
2191 ForwardRefVals.erase(FI);
2194 // Set the name on the instruction.
2195 Inst->setName(NameStr);
2197 if (Inst->getName() != NameStr)
2198 return P.Error(NameLoc, "multiple definition of local value named '" +
2203 /// GetBB - Get a basic block with the specified name or ID, creating a
2204 /// forward reference record if needed.
2205 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2207 return cast_or_null<BasicBlock>(GetVal(Name,
2208 Type::getLabelTy(F.getContext()), Loc));
2211 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2212 return cast_or_null<BasicBlock>(GetVal(ID,
2213 Type::getLabelTy(F.getContext()), Loc));
2216 /// DefineBB - Define the specified basic block, which is either named or
2217 /// unnamed. If there is an error, this returns null otherwise it returns
2218 /// the block being defined.
2219 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2223 BB = GetBB(NumberedVals.size(), Loc);
2225 BB = GetBB(Name, Loc);
2226 if (BB == 0) return 0; // Already diagnosed error.
2228 // Move the block to the end of the function. Forward ref'd blocks are
2229 // inserted wherever they happen to be referenced.
2230 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2232 // Remove the block from forward ref sets.
2234 ForwardRefValIDs.erase(NumberedVals.size());
2235 NumberedVals.push_back(BB);
2237 // BB forward references are already in the function symbol table.
2238 ForwardRefVals.erase(Name);
2244 //===----------------------------------------------------------------------===//
2246 //===----------------------------------------------------------------------===//
2248 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2249 /// type implied. For example, if we parse "4" we don't know what integer type
2250 /// it has. The value will later be combined with its type and checked for
2251 /// sanity. PFS is used to convert function-local operands of metadata (since
2252 /// metadata operands are not just parsed here but also converted to values).
2253 /// PFS can be null when we are not parsing metadata values inside a function.
2254 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2255 ID.Loc = Lex.getLoc();
2256 switch (Lex.getKind()) {
2257 default: return TokError("expected value token");
2258 case lltok::GlobalID: // @42
2259 ID.UIntVal = Lex.getUIntVal();
2260 ID.Kind = ValID::t_GlobalID;
2262 case lltok::GlobalVar: // @foo
2263 ID.StrVal = Lex.getStrVal();
2264 ID.Kind = ValID::t_GlobalName;
2266 case lltok::LocalVarID: // %42
2267 ID.UIntVal = Lex.getUIntVal();
2268 ID.Kind = ValID::t_LocalID;
2270 case lltok::LocalVar: // %foo
2271 ID.StrVal = Lex.getStrVal();
2272 ID.Kind = ValID::t_LocalName;
2274 case lltok::exclaim: // !42, !{...}, or !"foo"
2275 return ParseMetadataValue(ID, PFS);
2277 ID.APSIntVal = Lex.getAPSIntVal();
2278 ID.Kind = ValID::t_APSInt;
2280 case lltok::APFloat:
2281 ID.APFloatVal = Lex.getAPFloatVal();
2282 ID.Kind = ValID::t_APFloat;
2284 case lltok::kw_true:
2285 ID.ConstantVal = ConstantInt::getTrue(Context);
2286 ID.Kind = ValID::t_Constant;
2288 case lltok::kw_false:
2289 ID.ConstantVal = ConstantInt::getFalse(Context);
2290 ID.Kind = ValID::t_Constant;
2292 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2293 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2294 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2296 case lltok::lbrace: {
2297 // ValID ::= '{' ConstVector '}'
2299 SmallVector<Constant*, 16> Elts;
2300 if (ParseGlobalValueVector(Elts) ||
2301 ParseToken(lltok::rbrace, "expected end of struct constant"))
2304 ID.ConstantStructElts = new Constant*[Elts.size()];
2305 ID.UIntVal = Elts.size();
2306 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2307 ID.Kind = ValID::t_ConstantStruct;
2311 // ValID ::= '<' ConstVector '>' --> Vector.
2312 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2314 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2316 SmallVector<Constant*, 16> Elts;
2317 LocTy FirstEltLoc = Lex.getLoc();
2318 if (ParseGlobalValueVector(Elts) ||
2320 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2321 ParseToken(lltok::greater, "expected end of constant"))
2324 if (isPackedStruct) {
2325 ID.ConstantStructElts = new Constant*[Elts.size()];
2326 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2327 ID.UIntVal = Elts.size();
2328 ID.Kind = ValID::t_PackedConstantStruct;
2333 return Error(ID.Loc, "constant vector must not be empty");
2335 if (!Elts[0]->getType()->isIntegerTy() &&
2336 !Elts[0]->getType()->isFloatingPointTy() &&
2337 !Elts[0]->getType()->isPointerTy())
2338 return Error(FirstEltLoc,
2339 "vector elements must have integer, pointer or floating point type");
2341 // Verify that all the vector elements have the same type.
2342 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2343 if (Elts[i]->getType() != Elts[0]->getType())
2344 return Error(FirstEltLoc,
2345 "vector element #" + Twine(i) +
2346 " is not of type '" + getTypeString(Elts[0]->getType()));
2348 ID.ConstantVal = ConstantVector::get(Elts);
2349 ID.Kind = ValID::t_Constant;
2352 case lltok::lsquare: { // Array Constant
2354 SmallVector<Constant*, 16> Elts;
2355 LocTy FirstEltLoc = Lex.getLoc();
2356 if (ParseGlobalValueVector(Elts) ||
2357 ParseToken(lltok::rsquare, "expected end of array constant"))
2360 // Handle empty element.
2362 // Use undef instead of an array because it's inconvenient to determine
2363 // the element type at this point, there being no elements to examine.
2364 ID.Kind = ValID::t_EmptyArray;
2368 if (!Elts[0]->getType()->isFirstClassType())
2369 return Error(FirstEltLoc, "invalid array element type: " +
2370 getTypeString(Elts[0]->getType()));
2372 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2374 // Verify all elements are correct type!
2375 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2376 if (Elts[i]->getType() != Elts[0]->getType())
2377 return Error(FirstEltLoc,
2378 "array element #" + Twine(i) +
2379 " is not of type '" + getTypeString(Elts[0]->getType()));
2382 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2383 ID.Kind = ValID::t_Constant;
2386 case lltok::kw_c: // c "foo"
2388 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2390 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2391 ID.Kind = ValID::t_Constant;
2394 case lltok::kw_asm: {
2395 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2397 bool HasSideEffect, AlignStack, AsmDialect;
2399 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2400 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2401 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2402 ParseStringConstant(ID.StrVal) ||
2403 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2404 ParseToken(lltok::StringConstant, "expected constraint string"))
2406 ID.StrVal2 = Lex.getStrVal();
2407 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2408 (unsigned(AsmDialect)<<2);
2409 ID.Kind = ValID::t_InlineAsm;
2413 case lltok::kw_blockaddress: {
2414 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2419 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2421 ParseToken(lltok::comma, "expected comma in block address expression")||
2422 ParseValID(Label) ||
2423 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2426 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2427 return Error(Fn.Loc, "expected function name in blockaddress");
2428 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2429 return Error(Label.Loc, "expected basic block name in blockaddress");
2431 // Make a global variable as a placeholder for this reference.
2432 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2433 false, GlobalValue::InternalLinkage,
2435 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2436 ID.ConstantVal = FwdRef;
2437 ID.Kind = ValID::t_Constant;
2441 case lltok::kw_trunc:
2442 case lltok::kw_zext:
2443 case lltok::kw_sext:
2444 case lltok::kw_fptrunc:
2445 case lltok::kw_fpext:
2446 case lltok::kw_bitcast:
2447 case lltok::kw_addrspacecast:
2448 case lltok::kw_uitofp:
2449 case lltok::kw_sitofp:
2450 case lltok::kw_fptoui:
2451 case lltok::kw_fptosi:
2452 case lltok::kw_inttoptr:
2453 case lltok::kw_ptrtoint: {
2454 unsigned Opc = Lex.getUIntVal();
2458 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2459 ParseGlobalTypeAndValue(SrcVal) ||
2460 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2461 ParseType(DestTy) ||
2462 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2464 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2465 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2466 getTypeString(SrcVal->getType()) + "' to '" +
2467 getTypeString(DestTy) + "'");
2468 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2470 ID.Kind = ValID::t_Constant;
2473 case lltok::kw_extractvalue: {
2476 SmallVector<unsigned, 4> Indices;
2477 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2478 ParseGlobalTypeAndValue(Val) ||
2479 ParseIndexList(Indices) ||
2480 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2483 if (!Val->getType()->isAggregateType())
2484 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2485 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2486 return Error(ID.Loc, "invalid indices for extractvalue");
2487 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2488 ID.Kind = ValID::t_Constant;
2491 case lltok::kw_insertvalue: {
2493 Constant *Val0, *Val1;
2494 SmallVector<unsigned, 4> Indices;
2495 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2496 ParseGlobalTypeAndValue(Val0) ||
2497 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2498 ParseGlobalTypeAndValue(Val1) ||
2499 ParseIndexList(Indices) ||
2500 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2502 if (!Val0->getType()->isAggregateType())
2503 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2504 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2505 return Error(ID.Loc, "invalid indices for insertvalue");
2506 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2507 ID.Kind = ValID::t_Constant;
2510 case lltok::kw_icmp:
2511 case lltok::kw_fcmp: {
2512 unsigned PredVal, Opc = Lex.getUIntVal();
2513 Constant *Val0, *Val1;
2515 if (ParseCmpPredicate(PredVal, Opc) ||
2516 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2517 ParseGlobalTypeAndValue(Val0) ||
2518 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2519 ParseGlobalTypeAndValue(Val1) ||
2520 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2523 if (Val0->getType() != Val1->getType())
2524 return Error(ID.Loc, "compare operands must have the same type");
2526 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2528 if (Opc == Instruction::FCmp) {
2529 if (!Val0->getType()->isFPOrFPVectorTy())
2530 return Error(ID.Loc, "fcmp requires floating point operands");
2531 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2533 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2534 if (!Val0->getType()->isIntOrIntVectorTy() &&
2535 !Val0->getType()->getScalarType()->isPointerTy())
2536 return Error(ID.Loc, "icmp requires pointer or integer operands");
2537 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2539 ID.Kind = ValID::t_Constant;
2543 // Binary Operators.
2545 case lltok::kw_fadd:
2547 case lltok::kw_fsub:
2549 case lltok::kw_fmul:
2550 case lltok::kw_udiv:
2551 case lltok::kw_sdiv:
2552 case lltok::kw_fdiv:
2553 case lltok::kw_urem:
2554 case lltok::kw_srem:
2555 case lltok::kw_frem:
2557 case lltok::kw_lshr:
2558 case lltok::kw_ashr: {
2562 unsigned Opc = Lex.getUIntVal();
2563 Constant *Val0, *Val1;
2565 LocTy ModifierLoc = Lex.getLoc();
2566 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2567 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2568 if (EatIfPresent(lltok::kw_nuw))
2570 if (EatIfPresent(lltok::kw_nsw)) {
2572 if (EatIfPresent(lltok::kw_nuw))
2575 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2576 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2577 if (EatIfPresent(lltok::kw_exact))
2580 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2581 ParseGlobalTypeAndValue(Val0) ||
2582 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2583 ParseGlobalTypeAndValue(Val1) ||
2584 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2586 if (Val0->getType() != Val1->getType())
2587 return Error(ID.Loc, "operands of constexpr must have same type");
2588 if (!Val0->getType()->isIntOrIntVectorTy()) {
2590 return Error(ModifierLoc, "nuw only applies to integer operations");
2592 return Error(ModifierLoc, "nsw only applies to integer operations");
2594 // Check that the type is valid for the operator.
2596 case Instruction::Add:
2597 case Instruction::Sub:
2598 case Instruction::Mul:
2599 case Instruction::UDiv:
2600 case Instruction::SDiv:
2601 case Instruction::URem:
2602 case Instruction::SRem:
2603 case Instruction::Shl:
2604 case Instruction::AShr:
2605 case Instruction::LShr:
2606 if (!Val0->getType()->isIntOrIntVectorTy())
2607 return Error(ID.Loc, "constexpr requires integer operands");
2609 case Instruction::FAdd:
2610 case Instruction::FSub:
2611 case Instruction::FMul:
2612 case Instruction::FDiv:
2613 case Instruction::FRem:
2614 if (!Val0->getType()->isFPOrFPVectorTy())
2615 return Error(ID.Loc, "constexpr requires fp operands");
2617 default: llvm_unreachable("Unknown binary operator!");
2620 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2621 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2622 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2623 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2625 ID.Kind = ValID::t_Constant;
2629 // Logical Operations
2632 case lltok::kw_xor: {
2633 unsigned Opc = Lex.getUIntVal();
2634 Constant *Val0, *Val1;
2636 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2637 ParseGlobalTypeAndValue(Val0) ||
2638 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2639 ParseGlobalTypeAndValue(Val1) ||
2640 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2642 if (Val0->getType() != Val1->getType())
2643 return Error(ID.Loc, "operands of constexpr must have same type");
2644 if (!Val0->getType()->isIntOrIntVectorTy())
2645 return Error(ID.Loc,
2646 "constexpr requires integer or integer vector operands");
2647 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2648 ID.Kind = ValID::t_Constant;
2652 case lltok::kw_getelementptr:
2653 case lltok::kw_shufflevector:
2654 case lltok::kw_insertelement:
2655 case lltok::kw_extractelement:
2656 case lltok::kw_select: {
2657 unsigned Opc = Lex.getUIntVal();
2658 SmallVector<Constant*, 16> Elts;
2659 bool InBounds = false;
2661 if (Opc == Instruction::GetElementPtr)
2662 InBounds = EatIfPresent(lltok::kw_inbounds);
2663 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2664 ParseGlobalValueVector(Elts) ||
2665 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2668 if (Opc == Instruction::GetElementPtr) {
2669 if (Elts.size() == 0 ||
2670 !Elts[0]->getType()->getScalarType()->isPointerTy())
2671 return Error(ID.Loc, "getelementptr requires pointer operand");
2673 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2674 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2675 return Error(ID.Loc, "invalid indices for getelementptr");
2676 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2678 } else if (Opc == Instruction::Select) {
2679 if (Elts.size() != 3)
2680 return Error(ID.Loc, "expected three operands to select");
2681 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2683 return Error(ID.Loc, Reason);
2684 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2685 } else if (Opc == Instruction::ShuffleVector) {
2686 if (Elts.size() != 3)
2687 return Error(ID.Loc, "expected three operands to shufflevector");
2688 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2689 return Error(ID.Loc, "invalid operands to shufflevector");
2691 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2692 } else if (Opc == Instruction::ExtractElement) {
2693 if (Elts.size() != 2)
2694 return Error(ID.Loc, "expected two operands to extractelement");
2695 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2696 return Error(ID.Loc, "invalid extractelement operands");
2697 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2699 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2700 if (Elts.size() != 3)
2701 return Error(ID.Loc, "expected three operands to insertelement");
2702 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2703 return Error(ID.Loc, "invalid insertelement operands");
2705 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2708 ID.Kind = ValID::t_Constant;
2717 /// ParseGlobalValue - Parse a global value with the specified type.
2718 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2722 bool Parsed = ParseValID(ID) ||
2723 ConvertValIDToValue(Ty, ID, V, NULL);
2724 if (V && !(C = dyn_cast<Constant>(V)))
2725 return Error(ID.Loc, "global values must be constants");
2729 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2731 return ParseType(Ty) ||
2732 ParseGlobalValue(Ty, V);
2735 /// ParseGlobalValueVector
2737 /// ::= TypeAndValue (',' TypeAndValue)*
2738 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2740 if (Lex.getKind() == lltok::rbrace ||
2741 Lex.getKind() == lltok::rsquare ||
2742 Lex.getKind() == lltok::greater ||
2743 Lex.getKind() == lltok::rparen)
2747 if (ParseGlobalTypeAndValue(C)) return true;
2750 while (EatIfPresent(lltok::comma)) {
2751 if (ParseGlobalTypeAndValue(C)) return true;
2758 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2759 assert(Lex.getKind() == lltok::lbrace);
2762 SmallVector<Value*, 16> Elts;
2763 if (ParseMDNodeVector(Elts, PFS) ||
2764 ParseToken(lltok::rbrace, "expected end of metadata node"))
2767 ID.MDNodeVal = MDNode::get(Context, Elts);
2768 ID.Kind = ValID::t_MDNode;
2772 /// ParseMetadataValue
2776 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2777 assert(Lex.getKind() == lltok::exclaim);
2782 if (Lex.getKind() == lltok::lbrace)
2783 return ParseMetadataListValue(ID, PFS);
2785 // Standalone metadata reference
2787 if (Lex.getKind() == lltok::APSInt) {
2788 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2789 ID.Kind = ValID::t_MDNode;
2794 // ::= '!' STRINGCONSTANT
2795 if (ParseMDString(ID.MDStringVal)) return true;
2796 ID.Kind = ValID::t_MDString;
2801 //===----------------------------------------------------------------------===//
2802 // Function Parsing.
2803 //===----------------------------------------------------------------------===//
2805 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2806 PerFunctionState *PFS) {
2807 if (Ty->isFunctionTy())
2808 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2811 case ValID::t_LocalID:
2812 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2813 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2815 case ValID::t_LocalName:
2816 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2817 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2819 case ValID::t_InlineAsm: {
2820 PointerType *PTy = dyn_cast<PointerType>(Ty);
2822 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2823 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2824 return Error(ID.Loc, "invalid type for inline asm constraint string");
2825 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
2826 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
2829 case ValID::t_MDNode:
2830 if (!Ty->isMetadataTy())
2831 return Error(ID.Loc, "metadata value must have metadata type");
2834 case ValID::t_MDString:
2835 if (!Ty->isMetadataTy())
2836 return Error(ID.Loc, "metadata value must have metadata type");
2839 case ValID::t_GlobalName:
2840 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2842 case ValID::t_GlobalID:
2843 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2845 case ValID::t_APSInt:
2846 if (!Ty->isIntegerTy())
2847 return Error(ID.Loc, "integer constant must have integer type");
2848 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2849 V = ConstantInt::get(Context, ID.APSIntVal);
2851 case ValID::t_APFloat:
2852 if (!Ty->isFloatingPointTy() ||
2853 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2854 return Error(ID.Loc, "floating point constant invalid for type");
2856 // The lexer has no type info, so builds all half, float, and double FP
2857 // constants as double. Fix this here. Long double does not need this.
2858 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
2861 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
2863 else if (Ty->isFloatTy())
2864 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2867 V = ConstantFP::get(Context, ID.APFloatVal);
2869 if (V->getType() != Ty)
2870 return Error(ID.Loc, "floating point constant does not have type '" +
2871 getTypeString(Ty) + "'");
2875 if (!Ty->isPointerTy())
2876 return Error(ID.Loc, "null must be a pointer type");
2877 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2879 case ValID::t_Undef:
2880 // FIXME: LabelTy should not be a first-class type.
2881 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2882 return Error(ID.Loc, "invalid type for undef constant");
2883 V = UndefValue::get(Ty);
2885 case ValID::t_EmptyArray:
2886 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2887 return Error(ID.Loc, "invalid empty array initializer");
2888 V = UndefValue::get(Ty);
2891 // FIXME: LabelTy should not be a first-class type.
2892 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2893 return Error(ID.Loc, "invalid type for null constant");
2894 V = Constant::getNullValue(Ty);
2896 case ValID::t_Constant:
2897 if (ID.ConstantVal->getType() != Ty)
2898 return Error(ID.Loc, "constant expression type mismatch");
2902 case ValID::t_ConstantStruct:
2903 case ValID::t_PackedConstantStruct:
2904 if (StructType *ST = dyn_cast<StructType>(Ty)) {
2905 if (ST->getNumElements() != ID.UIntVal)
2906 return Error(ID.Loc,
2907 "initializer with struct type has wrong # elements");
2908 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
2909 return Error(ID.Loc, "packed'ness of initializer and type don't match");
2911 // Verify that the elements are compatible with the structtype.
2912 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
2913 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
2914 return Error(ID.Loc, "element " + Twine(i) +
2915 " of struct initializer doesn't match struct element type");
2917 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
2920 return Error(ID.Loc, "constant expression type mismatch");
2923 llvm_unreachable("Invalid ValID");
2926 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
2929 return ParseValID(ID, PFS) ||
2930 ConvertValIDToValue(Ty, ID, V, PFS);
2933 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
2935 return ParseType(Ty) ||
2936 ParseValue(Ty, V, PFS);
2939 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2940 PerFunctionState &PFS) {
2943 if (ParseTypeAndValue(V, PFS)) return true;
2944 if (!isa<BasicBlock>(V))
2945 return Error(Loc, "expected a basic block");
2946 BB = cast<BasicBlock>(V);
2952 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2953 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2954 /// OptionalAlign OptGC OptionalPrefix
2955 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2956 // Parse the linkage.
2957 LocTy LinkageLoc = Lex.getLoc();
2960 unsigned Visibility;
2961 unsigned DLLStorageClass;
2962 AttrBuilder RetAttrs;
2965 LocTy RetTypeLoc = Lex.getLoc();
2966 if (ParseOptionalLinkage(Linkage) ||
2967 ParseOptionalVisibility(Visibility) ||
2968 ParseOptionalDLLStorageClass(DLLStorageClass) ||
2969 ParseOptionalCallingConv(CC) ||
2970 ParseOptionalReturnAttrs(RetAttrs) ||
2971 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2974 // Verify that the linkage is ok.
2975 switch ((GlobalValue::LinkageTypes)Linkage) {
2976 case GlobalValue::ExternalLinkage:
2977 break; // always ok.
2978 case GlobalValue::ExternalWeakLinkage:
2980 return Error(LinkageLoc, "invalid linkage for function definition");
2982 case GlobalValue::PrivateLinkage:
2983 case GlobalValue::LinkerPrivateLinkage:
2984 case GlobalValue::LinkerPrivateWeakLinkage:
2985 case GlobalValue::InternalLinkage:
2986 case GlobalValue::AvailableExternallyLinkage:
2987 case GlobalValue::LinkOnceAnyLinkage:
2988 case GlobalValue::LinkOnceODRLinkage:
2989 case GlobalValue::WeakAnyLinkage:
2990 case GlobalValue::WeakODRLinkage:
2992 return Error(LinkageLoc, "invalid linkage for function declaration");
2994 case GlobalValue::AppendingLinkage:
2995 case GlobalValue::CommonLinkage:
2996 return Error(LinkageLoc, "invalid function linkage type");
2999 if (!FunctionType::isValidReturnType(RetType))
3000 return Error(RetTypeLoc, "invalid function return type");
3002 LocTy NameLoc = Lex.getLoc();
3004 std::string FunctionName;
3005 if (Lex.getKind() == lltok::GlobalVar) {
3006 FunctionName = Lex.getStrVal();
3007 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
3008 unsigned NameID = Lex.getUIntVal();
3010 if (NameID != NumberedVals.size())
3011 return TokError("function expected to be numbered '%" +
3012 Twine(NumberedVals.size()) + "'");
3014 return TokError("expected function name");
3019 if (Lex.getKind() != lltok::lparen)
3020 return TokError("expected '(' in function argument list");
3022 SmallVector<ArgInfo, 8> ArgList;
3024 AttrBuilder FuncAttrs;
3025 std::vector<unsigned> FwdRefAttrGrps;
3027 std::string Section;
3031 LocTy UnnamedAddrLoc;
3032 Constant *Prefix = 0;
3034 if (ParseArgumentList(ArgList, isVarArg) ||
3035 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
3037 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
3039 (EatIfPresent(lltok::kw_section) &&
3040 ParseStringConstant(Section)) ||
3041 ParseOptionalAlignment(Alignment) ||
3042 (EatIfPresent(lltok::kw_gc) &&
3043 ParseStringConstant(GC)) ||
3044 (EatIfPresent(lltok::kw_prefix) &&
3045 ParseGlobalTypeAndValue(Prefix)))
3048 if (FuncAttrs.contains(Attribute::Builtin))
3049 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
3051 // If the alignment was parsed as an attribute, move to the alignment field.
3052 if (FuncAttrs.hasAlignmentAttr()) {
3053 Alignment = FuncAttrs.getAlignment();
3054 FuncAttrs.removeAttribute(Attribute::Alignment);
3057 // Okay, if we got here, the function is syntactically valid. Convert types
3058 // and do semantic checks.
3059 std::vector<Type*> ParamTypeList;
3060 SmallVector<AttributeSet, 8> Attrs;
3062 if (RetAttrs.hasAttributes())
3063 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3064 AttributeSet::ReturnIndex,
3067 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3068 ParamTypeList.push_back(ArgList[i].Ty);
3069 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3070 AttrBuilder B(ArgList[i].Attrs, i + 1);
3071 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3075 if (FuncAttrs.hasAttributes())
3076 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3077 AttributeSet::FunctionIndex,
3080 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3082 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
3083 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
3086 FunctionType::get(RetType, ParamTypeList, isVarArg);
3087 PointerType *PFT = PointerType::getUnqual(FT);
3090 if (!FunctionName.empty()) {
3091 // If this was a definition of a forward reference, remove the definition
3092 // from the forward reference table and fill in the forward ref.
3093 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
3094 ForwardRefVals.find(FunctionName);
3095 if (FRVI != ForwardRefVals.end()) {
3096 Fn = M->getFunction(FunctionName);
3098 return Error(FRVI->second.second, "invalid forward reference to "
3099 "function as global value!");
3100 if (Fn->getType() != PFT)
3101 return Error(FRVI->second.second, "invalid forward reference to "
3102 "function '" + FunctionName + "' with wrong type!");
3104 ForwardRefVals.erase(FRVI);
3105 } else if ((Fn = M->getFunction(FunctionName))) {
3106 // Reject redefinitions.
3107 return Error(NameLoc, "invalid redefinition of function '" +
3108 FunctionName + "'");
3109 } else if (M->getNamedValue(FunctionName)) {
3110 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
3114 // If this is a definition of a forward referenced function, make sure the
3116 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
3117 = ForwardRefValIDs.find(NumberedVals.size());
3118 if (I != ForwardRefValIDs.end()) {
3119 Fn = cast<Function>(I->second.first);
3120 if (Fn->getType() != PFT)
3121 return Error(NameLoc, "type of definition and forward reference of '@" +
3122 Twine(NumberedVals.size()) + "' disagree");
3123 ForwardRefValIDs.erase(I);
3128 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
3129 else // Move the forward-reference to the correct spot in the module.
3130 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
3132 if (FunctionName.empty())
3133 NumberedVals.push_back(Fn);
3135 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
3136 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
3137 Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
3138 Fn->setCallingConv(CC);
3139 Fn->setAttributes(PAL);
3140 Fn->setUnnamedAddr(UnnamedAddr);
3141 Fn->setAlignment(Alignment);
3142 Fn->setSection(Section);
3143 if (!GC.empty()) Fn->setGC(GC.c_str());
3144 Fn->setPrefixData(Prefix);
3145 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
3147 // Add all of the arguments we parsed to the function.
3148 Function::arg_iterator ArgIt = Fn->arg_begin();
3149 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
3150 // If the argument has a name, insert it into the argument symbol table.
3151 if (ArgList[i].Name.empty()) continue;
3153 // Set the name, if it conflicted, it will be auto-renamed.
3154 ArgIt->setName(ArgList[i].Name);
3156 if (ArgIt->getName() != ArgList[i].Name)
3157 return Error(ArgList[i].Loc, "redefinition of argument '%" +
3158 ArgList[i].Name + "'");
3165 /// ParseFunctionBody
3166 /// ::= '{' BasicBlock+ '}'
3168 bool LLParser::ParseFunctionBody(Function &Fn) {
3169 if (Lex.getKind() != lltok::lbrace)
3170 return TokError("expected '{' in function body");
3171 Lex.Lex(); // eat the {.
3173 int FunctionNumber = -1;
3174 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
3176 PerFunctionState PFS(*this, Fn, FunctionNumber);
3178 // We need at least one basic block.
3179 if (Lex.getKind() == lltok::rbrace)
3180 return TokError("function body requires at least one basic block");
3182 while (Lex.getKind() != lltok::rbrace)
3183 if (ParseBasicBlock(PFS)) return true;
3188 // Verify function is ok.
3189 return PFS.FinishFunction();
3193 /// ::= LabelStr? Instruction*
3194 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
3195 // If this basic block starts out with a name, remember it.
3197 LocTy NameLoc = Lex.getLoc();
3198 if (Lex.getKind() == lltok::LabelStr) {
3199 Name = Lex.getStrVal();
3203 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
3204 if (BB == 0) return true;
3206 std::string NameStr;
3208 // Parse the instructions in this block until we get a terminator.
3211 // This instruction may have three possibilities for a name: a) none
3212 // specified, b) name specified "%foo =", c) number specified: "%4 =".
3213 LocTy NameLoc = Lex.getLoc();
3217 if (Lex.getKind() == lltok::LocalVarID) {
3218 NameID = Lex.getUIntVal();
3220 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
3222 } else if (Lex.getKind() == lltok::LocalVar) {
3223 NameStr = Lex.getStrVal();
3225 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
3229 switch (ParseInstruction(Inst, BB, PFS)) {
3230 default: llvm_unreachable("Unknown ParseInstruction result!");
3231 case InstError: return true;
3233 BB->getInstList().push_back(Inst);
3235 // With a normal result, we check to see if the instruction is followed by
3236 // a comma and metadata.
3237 if (EatIfPresent(lltok::comma))
3238 if (ParseInstructionMetadata(Inst, &PFS))
3241 case InstExtraComma:
3242 BB->getInstList().push_back(Inst);
3244 // If the instruction parser ate an extra comma at the end of it, it
3245 // *must* be followed by metadata.
3246 if (ParseInstructionMetadata(Inst, &PFS))
3251 // Set the name on the instruction.
3252 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3253 } while (!isa<TerminatorInst>(Inst));
3258 //===----------------------------------------------------------------------===//
3259 // Instruction Parsing.
3260 //===----------------------------------------------------------------------===//
3262 /// ParseInstruction - Parse one of the many different instructions.
3264 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3265 PerFunctionState &PFS) {
3266 lltok::Kind Token = Lex.getKind();
3267 if (Token == lltok::Eof)
3268 return TokError("found end of file when expecting more instructions");
3269 LocTy Loc = Lex.getLoc();
3270 unsigned KeywordVal = Lex.getUIntVal();
3271 Lex.Lex(); // Eat the keyword.
3274 default: return Error(Loc, "expected instruction opcode");
3275 // Terminator Instructions.
3276 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3277 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3278 case lltok::kw_br: return ParseBr(Inst, PFS);
3279 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3280 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3281 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3282 case lltok::kw_resume: return ParseResume(Inst, PFS);
3283 // Binary Operators.
3287 case lltok::kw_shl: {
3288 bool NUW = EatIfPresent(lltok::kw_nuw);
3289 bool NSW = EatIfPresent(lltok::kw_nsw);
3290 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3292 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3294 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3295 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3298 case lltok::kw_fadd:
3299 case lltok::kw_fsub:
3300 case lltok::kw_fmul:
3301 case lltok::kw_fdiv:
3302 case lltok::kw_frem: {
3303 FastMathFlags FMF = EatFastMathFlagsIfPresent();
3304 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
3308 Inst->setFastMathFlags(FMF);
3312 case lltok::kw_sdiv:
3313 case lltok::kw_udiv:
3314 case lltok::kw_lshr:
3315 case lltok::kw_ashr: {
3316 bool Exact = EatIfPresent(lltok::kw_exact);
3318 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3319 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3323 case lltok::kw_urem:
3324 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3327 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3328 case lltok::kw_icmp:
3329 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3331 case lltok::kw_trunc:
3332 case lltok::kw_zext:
3333 case lltok::kw_sext:
3334 case lltok::kw_fptrunc:
3335 case lltok::kw_fpext:
3336 case lltok::kw_bitcast:
3337 case lltok::kw_addrspacecast:
3338 case lltok::kw_uitofp:
3339 case lltok::kw_sitofp:
3340 case lltok::kw_fptoui:
3341 case lltok::kw_fptosi:
3342 case lltok::kw_inttoptr:
3343 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3345 case lltok::kw_select: return ParseSelect(Inst, PFS);
3346 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3347 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3348 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3349 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3350 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3351 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3352 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3353 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3355 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3356 case lltok::kw_load: return ParseLoad(Inst, PFS);
3357 case lltok::kw_store: return ParseStore(Inst, PFS);
3358 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3359 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3360 case lltok::kw_fence: return ParseFence(Inst, PFS);
3361 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3362 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3363 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3367 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3368 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3369 if (Opc == Instruction::FCmp) {
3370 switch (Lex.getKind()) {
3371 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
3372 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3373 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3374 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3375 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3376 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3377 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3378 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3379 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3380 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3381 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3382 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3383 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3384 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3385 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3386 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3387 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3390 switch (Lex.getKind()) {
3391 default: return TokError("expected icmp predicate (e.g. 'eq')");
3392 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3393 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3394 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3395 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3396 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3397 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3398 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3399 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3400 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3401 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3408 //===----------------------------------------------------------------------===//
3409 // Terminator Instructions.
3410 //===----------------------------------------------------------------------===//
3412 /// ParseRet - Parse a return instruction.
3413 /// ::= 'ret' void (',' !dbg, !1)*
3414 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3415 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3416 PerFunctionState &PFS) {
3417 SMLoc TypeLoc = Lex.getLoc();
3419 if (ParseType(Ty, true /*void allowed*/)) return true;
3421 Type *ResType = PFS.getFunction().getReturnType();
3423 if (Ty->isVoidTy()) {
3424 if (!ResType->isVoidTy())
3425 return Error(TypeLoc, "value doesn't match function result type '" +
3426 getTypeString(ResType) + "'");
3428 Inst = ReturnInst::Create(Context);
3433 if (ParseValue(Ty, RV, PFS)) return true;
3435 if (ResType != RV->getType())
3436 return Error(TypeLoc, "value doesn't match function result type '" +
3437 getTypeString(ResType) + "'");
3439 Inst = ReturnInst::Create(Context, RV);
3445 /// ::= 'br' TypeAndValue
3446 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3447 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3450 BasicBlock *Op1, *Op2;
3451 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3453 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3454 Inst = BranchInst::Create(BB);
3458 if (Op0->getType() != Type::getInt1Ty(Context))
3459 return Error(Loc, "branch condition must have 'i1' type");
3461 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3462 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3463 ParseToken(lltok::comma, "expected ',' after true destination") ||
3464 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3467 Inst = BranchInst::Create(Op1, Op2, Op0);
3473 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3475 /// ::= (TypeAndValue ',' TypeAndValue)*
3476 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3477 LocTy CondLoc, BBLoc;
3479 BasicBlock *DefaultBB;
3480 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3481 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3482 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3483 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3486 if (!Cond->getType()->isIntegerTy())
3487 return Error(CondLoc, "switch condition must have integer type");
3489 // Parse the jump table pairs.
3490 SmallPtrSet<Value*, 32> SeenCases;
3491 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3492 while (Lex.getKind() != lltok::rsquare) {
3496 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3497 ParseToken(lltok::comma, "expected ',' after case value") ||
3498 ParseTypeAndBasicBlock(DestBB, PFS))
3501 if (!SeenCases.insert(Constant))
3502 return Error(CondLoc, "duplicate case value in switch");
3503 if (!isa<ConstantInt>(Constant))
3504 return Error(CondLoc, "case value is not a constant integer");
3506 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3509 Lex.Lex(); // Eat the ']'.
3511 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3512 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3513 SI->addCase(Table[i].first, Table[i].second);
3520 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3521 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3524 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3525 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3526 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3529 if (!Address->getType()->isPointerTy())
3530 return Error(AddrLoc, "indirectbr address must have pointer type");
3532 // Parse the destination list.
3533 SmallVector<BasicBlock*, 16> DestList;
3535 if (Lex.getKind() != lltok::rsquare) {
3537 if (ParseTypeAndBasicBlock(DestBB, PFS))
3539 DestList.push_back(DestBB);
3541 while (EatIfPresent(lltok::comma)) {
3542 if (ParseTypeAndBasicBlock(DestBB, PFS))
3544 DestList.push_back(DestBB);
3548 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3551 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3552 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3553 IBI->addDestination(DestList[i]);
3560 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3561 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3562 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3563 LocTy CallLoc = Lex.getLoc();
3564 AttrBuilder RetAttrs, FnAttrs;
3565 std::vector<unsigned> FwdRefAttrGrps;
3571 SmallVector<ParamInfo, 16> ArgList;
3573 BasicBlock *NormalBB, *UnwindBB;
3574 if (ParseOptionalCallingConv(CC) ||
3575 ParseOptionalReturnAttrs(RetAttrs) ||
3576 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3577 ParseValID(CalleeID) ||
3578 ParseParameterList(ArgList, PFS) ||
3579 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3581 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3582 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3583 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3584 ParseTypeAndBasicBlock(UnwindBB, PFS))
3587 // If RetType is a non-function pointer type, then this is the short syntax
3588 // for the call, which means that RetType is just the return type. Infer the
3589 // rest of the function argument types from the arguments that are present.
3590 PointerType *PFTy = 0;
3591 FunctionType *Ty = 0;
3592 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3593 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3594 // Pull out the types of all of the arguments...
3595 std::vector<Type*> ParamTypes;
3596 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3597 ParamTypes.push_back(ArgList[i].V->getType());
3599 if (!FunctionType::isValidReturnType(RetType))
3600 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3602 Ty = FunctionType::get(RetType, ParamTypes, false);
3603 PFTy = PointerType::getUnqual(Ty);
3606 // Look up the callee.
3608 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3610 // Set up the Attribute for the function.
3611 SmallVector<AttributeSet, 8> Attrs;
3612 if (RetAttrs.hasAttributes())
3613 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3614 AttributeSet::ReturnIndex,
3617 SmallVector<Value*, 8> Args;
3619 // Loop through FunctionType's arguments and ensure they are specified
3620 // correctly. Also, gather any parameter attributes.
3621 FunctionType::param_iterator I = Ty->param_begin();
3622 FunctionType::param_iterator E = Ty->param_end();
3623 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3624 Type *ExpectedTy = 0;
3627 } else if (!Ty->isVarArg()) {
3628 return Error(ArgList[i].Loc, "too many arguments specified");
3631 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3632 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3633 getTypeString(ExpectedTy) + "'");
3634 Args.push_back(ArgList[i].V);
3635 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3636 AttrBuilder B(ArgList[i].Attrs, i + 1);
3637 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3642 return Error(CallLoc, "not enough parameters specified for call");
3644 if (FnAttrs.hasAttributes())
3645 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3646 AttributeSet::FunctionIndex,
3649 // Finish off the Attribute and check them
3650 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3652 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3653 II->setCallingConv(CC);
3654 II->setAttributes(PAL);
3655 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
3661 /// ::= 'resume' TypeAndValue
3662 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3663 Value *Exn; LocTy ExnLoc;
3664 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3667 ResumeInst *RI = ResumeInst::Create(Exn);
3672 //===----------------------------------------------------------------------===//
3673 // Binary Operators.
3674 //===----------------------------------------------------------------------===//
3677 /// ::= ArithmeticOps TypeAndValue ',' Value
3679 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3680 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3681 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3682 unsigned Opc, unsigned OperandType) {
3683 LocTy Loc; Value *LHS, *RHS;
3684 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3685 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3686 ParseValue(LHS->getType(), RHS, PFS))
3690 switch (OperandType) {
3691 default: llvm_unreachable("Unknown operand type!");
3692 case 0: // int or FP.
3693 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3694 LHS->getType()->isFPOrFPVectorTy();
3696 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3697 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3701 return Error(Loc, "invalid operand type for instruction");
3703 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3708 /// ::= ArithmeticOps TypeAndValue ',' Value {
3709 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3711 LocTy Loc; Value *LHS, *RHS;
3712 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3713 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3714 ParseValue(LHS->getType(), RHS, PFS))
3717 if (!LHS->getType()->isIntOrIntVectorTy())
3718 return Error(Loc,"instruction requires integer or integer vector operands");
3720 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3726 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3727 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3728 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3730 // Parse the integer/fp comparison predicate.
3734 if (ParseCmpPredicate(Pred, Opc) ||
3735 ParseTypeAndValue(LHS, Loc, PFS) ||
3736 ParseToken(lltok::comma, "expected ',' after compare value") ||
3737 ParseValue(LHS->getType(), RHS, PFS))
3740 if (Opc == Instruction::FCmp) {
3741 if (!LHS->getType()->isFPOrFPVectorTy())
3742 return Error(Loc, "fcmp requires floating point operands");
3743 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3745 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3746 if (!LHS->getType()->isIntOrIntVectorTy() &&
3747 !LHS->getType()->getScalarType()->isPointerTy())
3748 return Error(Loc, "icmp requires integer operands");
3749 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3754 //===----------------------------------------------------------------------===//
3755 // Other Instructions.
3756 //===----------------------------------------------------------------------===//
3760 /// ::= CastOpc TypeAndValue 'to' Type
3761 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3766 if (ParseTypeAndValue(Op, Loc, PFS) ||
3767 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3771 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3772 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3773 return Error(Loc, "invalid cast opcode for cast from '" +
3774 getTypeString(Op->getType()) + "' to '" +
3775 getTypeString(DestTy) + "'");
3777 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3782 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3783 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3785 Value *Op0, *Op1, *Op2;
3786 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3787 ParseToken(lltok::comma, "expected ',' after select condition") ||
3788 ParseTypeAndValue(Op1, PFS) ||
3789 ParseToken(lltok::comma, "expected ',' after select value") ||
3790 ParseTypeAndValue(Op2, PFS))
3793 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3794 return Error(Loc, Reason);
3796 Inst = SelectInst::Create(Op0, Op1, Op2);
3801 /// ::= 'va_arg' TypeAndValue ',' Type
3802 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3806 if (ParseTypeAndValue(Op, PFS) ||
3807 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3808 ParseType(EltTy, TypeLoc))
3811 if (!EltTy->isFirstClassType())
3812 return Error(TypeLoc, "va_arg requires operand with first class type");
3814 Inst = new VAArgInst(Op, EltTy);
3818 /// ParseExtractElement
3819 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3820 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3823 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3824 ParseToken(lltok::comma, "expected ',' after extract value") ||
3825 ParseTypeAndValue(Op1, PFS))
3828 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3829 return Error(Loc, "invalid extractelement operands");
3831 Inst = ExtractElementInst::Create(Op0, Op1);
3835 /// ParseInsertElement
3836 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3837 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3839 Value *Op0, *Op1, *Op2;
3840 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3841 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3842 ParseTypeAndValue(Op1, PFS) ||
3843 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3844 ParseTypeAndValue(Op2, PFS))
3847 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3848 return Error(Loc, "invalid insertelement operands");
3850 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3854 /// ParseShuffleVector
3855 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3856 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3858 Value *Op0, *Op1, *Op2;
3859 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3860 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3861 ParseTypeAndValue(Op1, PFS) ||
3862 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3863 ParseTypeAndValue(Op2, PFS))
3866 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3867 return Error(Loc, "invalid shufflevector operands");
3869 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3874 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3875 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3876 Type *Ty = 0; LocTy TypeLoc;
3879 if (ParseType(Ty, TypeLoc) ||
3880 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3881 ParseValue(Ty, Op0, PFS) ||
3882 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3883 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3884 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3887 bool AteExtraComma = false;
3888 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3890 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3892 if (!EatIfPresent(lltok::comma))
3895 if (Lex.getKind() == lltok::MetadataVar) {
3896 AteExtraComma = true;
3900 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3901 ParseValue(Ty, Op0, PFS) ||
3902 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3903 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3904 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3908 if (!Ty->isFirstClassType())
3909 return Error(TypeLoc, "phi node must have first class type");
3911 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
3912 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3913 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3915 return AteExtraComma ? InstExtraComma : InstNormal;
3919 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
3921 /// ::= 'catch' TypeAndValue
3923 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
3924 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
3925 Type *Ty = 0; LocTy TyLoc;
3926 Value *PersFn; LocTy PersFnLoc;
3928 if (ParseType(Ty, TyLoc) ||
3929 ParseToken(lltok::kw_personality, "expected 'personality'") ||
3930 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
3933 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
3934 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
3936 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
3937 LandingPadInst::ClauseType CT;
3938 if (EatIfPresent(lltok::kw_catch))
3939 CT = LandingPadInst::Catch;
3940 else if (EatIfPresent(lltok::kw_filter))
3941 CT = LandingPadInst::Filter;
3943 return TokError("expected 'catch' or 'filter' clause type");
3945 Value *V; LocTy VLoc;
3946 if (ParseTypeAndValue(V, VLoc, PFS)) {
3951 // A 'catch' type expects a non-array constant. A filter clause expects an
3953 if (CT == LandingPadInst::Catch) {
3954 if (isa<ArrayType>(V->getType()))
3955 Error(VLoc, "'catch' clause has an invalid type");
3957 if (!isa<ArrayType>(V->getType()))
3958 Error(VLoc, "'filter' clause has an invalid type");
3969 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3970 /// ParameterList OptionalAttrs
3971 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3973 AttrBuilder RetAttrs, FnAttrs;
3974 std::vector<unsigned> FwdRefAttrGrps;
3980 SmallVector<ParamInfo, 16> ArgList;
3981 LocTy CallLoc = Lex.getLoc();
3983 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3984 ParseOptionalCallingConv(CC) ||
3985 ParseOptionalReturnAttrs(RetAttrs) ||
3986 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3987 ParseValID(CalleeID) ||
3988 ParseParameterList(ArgList, PFS) ||
3989 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3993 // If RetType is a non-function pointer type, then this is the short syntax
3994 // for the call, which means that RetType is just the return type. Infer the
3995 // rest of the function argument types from the arguments that are present.
3996 PointerType *PFTy = 0;
3997 FunctionType *Ty = 0;
3998 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3999 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
4000 // Pull out the types of all of the arguments...
4001 std::vector<Type*> ParamTypes;
4002 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
4003 ParamTypes.push_back(ArgList[i].V->getType());
4005 if (!FunctionType::isValidReturnType(RetType))
4006 return Error(RetTypeLoc, "Invalid result type for LLVM function");
4008 Ty = FunctionType::get(RetType, ParamTypes, false);
4009 PFTy = PointerType::getUnqual(Ty);
4012 // Look up the callee.
4014 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
4016 // Set up the Attribute for the function.
4017 SmallVector<AttributeSet, 8> Attrs;
4018 if (RetAttrs.hasAttributes())
4019 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4020 AttributeSet::ReturnIndex,
4023 SmallVector<Value*, 8> Args;
4025 // Loop through FunctionType's arguments and ensure they are specified
4026 // correctly. Also, gather any parameter attributes.
4027 FunctionType::param_iterator I = Ty->param_begin();
4028 FunctionType::param_iterator E = Ty->param_end();
4029 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4030 Type *ExpectedTy = 0;
4033 } else if (!Ty->isVarArg()) {
4034 return Error(ArgList[i].Loc, "too many arguments specified");
4037 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
4038 return Error(ArgList[i].Loc, "argument is not of expected type '" +
4039 getTypeString(ExpectedTy) + "'");
4040 Args.push_back(ArgList[i].V);
4041 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4042 AttrBuilder B(ArgList[i].Attrs, i + 1);
4043 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4048 return Error(CallLoc, "not enough parameters specified for call");
4050 if (FnAttrs.hasAttributes())
4051 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4052 AttributeSet::FunctionIndex,
4055 // Finish off the Attribute and check them
4056 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4058 CallInst *CI = CallInst::Create(Callee, Args);
4059 CI->setTailCall(isTail);
4060 CI->setCallingConv(CC);
4061 CI->setAttributes(PAL);
4062 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
4067 //===----------------------------------------------------------------------===//
4068 // Memory Instructions.
4069 //===----------------------------------------------------------------------===//
4072 /// ::= 'alloca' Type (',' 'inalloca')? (',' TypeAndValue)? (',' OptionalInfo)?
4073 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
4076 unsigned Alignment = 0;
4077 bool IsInAlloca = false;
4079 if (ParseType(Ty)) return true;
4081 bool AteExtraComma = false;
4082 if (EatIfPresent(lltok::comma)) {
4083 bool HaveComma = true;
4084 if (EatIfPresent(lltok::kw_inalloca)) {
4086 HaveComma = EatIfPresent(lltok::comma);
4090 if (Lex.getKind() == lltok::kw_align) {
4091 if (ParseOptionalAlignment(Alignment)) return true;
4092 } else if (Lex.getKind() == lltok::MetadataVar) {
4093 AteExtraComma = true;
4095 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
4096 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4102 if (Size && !Size->getType()->isIntegerTy())
4103 return Error(SizeLoc, "element count must have integer type");
4105 AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
4106 AI->setUsedWithInAlloca(IsInAlloca);
4108 return AteExtraComma ? InstExtraComma : InstNormal;
4112 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
4113 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
4114 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4115 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
4116 Value *Val; LocTy Loc;
4117 unsigned Alignment = 0;
4118 bool AteExtraComma = false;
4119 bool isAtomic = false;
4120 AtomicOrdering Ordering = NotAtomic;
4121 SynchronizationScope Scope = CrossThread;
4123 if (Lex.getKind() == lltok::kw_atomic) {
4128 bool isVolatile = false;
4129 if (Lex.getKind() == lltok::kw_volatile) {
4134 if (ParseTypeAndValue(Val, Loc, PFS) ||
4135 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4136 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4139 if (!Val->getType()->isPointerTy() ||
4140 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
4141 return Error(Loc, "load operand must be a pointer to a first class type");
4142 if (isAtomic && !Alignment)
4143 return Error(Loc, "atomic load must have explicit non-zero alignment");
4144 if (Ordering == Release || Ordering == AcquireRelease)
4145 return Error(Loc, "atomic load cannot use Release ordering");
4147 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
4148 return AteExtraComma ? InstExtraComma : InstNormal;
4153 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
4154 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
4155 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4156 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
4157 Value *Val, *Ptr; LocTy Loc, PtrLoc;
4158 unsigned Alignment = 0;
4159 bool AteExtraComma = false;
4160 bool isAtomic = false;
4161 AtomicOrdering Ordering = NotAtomic;
4162 SynchronizationScope Scope = CrossThread;
4164 if (Lex.getKind() == lltok::kw_atomic) {
4169 bool isVolatile = false;
4170 if (Lex.getKind() == lltok::kw_volatile) {
4175 if (ParseTypeAndValue(Val, Loc, PFS) ||
4176 ParseToken(lltok::comma, "expected ',' after store operand") ||
4177 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4178 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4179 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4182 if (!Ptr->getType()->isPointerTy())
4183 return Error(PtrLoc, "store operand must be a pointer");
4184 if (!Val->getType()->isFirstClassType())
4185 return Error(Loc, "store operand must be a first class value");
4186 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4187 return Error(Loc, "stored value and pointer type do not match");
4188 if (isAtomic && !Alignment)
4189 return Error(Loc, "atomic store must have explicit non-zero alignment");
4190 if (Ordering == Acquire || Ordering == AcquireRelease)
4191 return Error(Loc, "atomic store cannot use Acquire ordering");
4193 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
4194 return AteExtraComma ? InstExtraComma : InstNormal;
4198 /// ::= 'cmpxchg' 'volatile'? TypeAndValue ',' TypeAndValue ',' TypeAndValue
4199 /// 'singlethread'? AtomicOrdering
4200 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
4201 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
4202 bool AteExtraComma = false;
4203 AtomicOrdering Ordering = NotAtomic;
4204 SynchronizationScope Scope = CrossThread;
4205 bool isVolatile = false;
4207 if (EatIfPresent(lltok::kw_volatile))
4210 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4211 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
4212 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
4213 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
4214 ParseTypeAndValue(New, NewLoc, PFS) ||
4215 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4218 if (Ordering == Unordered)
4219 return TokError("cmpxchg cannot be unordered");
4220 if (!Ptr->getType()->isPointerTy())
4221 return Error(PtrLoc, "cmpxchg operand must be a pointer");
4222 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
4223 return Error(CmpLoc, "compare value and pointer type do not match");
4224 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
4225 return Error(NewLoc, "new value and pointer type do not match");
4226 if (!New->getType()->isIntegerTy())
4227 return Error(NewLoc, "cmpxchg operand must be an integer");
4228 unsigned Size = New->getType()->getPrimitiveSizeInBits();
4229 if (Size < 8 || (Size & (Size - 1)))
4230 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
4233 AtomicCmpXchgInst *CXI =
4234 new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, Scope);
4235 CXI->setVolatile(isVolatile);
4237 return AteExtraComma ? InstExtraComma : InstNormal;
4241 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
4242 /// 'singlethread'? AtomicOrdering
4243 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
4244 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
4245 bool AteExtraComma = false;
4246 AtomicOrdering Ordering = NotAtomic;
4247 SynchronizationScope Scope = CrossThread;
4248 bool isVolatile = false;
4249 AtomicRMWInst::BinOp Operation;
4251 if (EatIfPresent(lltok::kw_volatile))
4254 switch (Lex.getKind()) {
4255 default: return TokError("expected binary operation in atomicrmw");
4256 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
4257 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
4258 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
4259 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
4260 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
4261 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
4262 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
4263 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
4264 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
4265 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
4266 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
4268 Lex.Lex(); // Eat the operation.
4270 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4271 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
4272 ParseTypeAndValue(Val, ValLoc, PFS) ||
4273 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4276 if (Ordering == Unordered)
4277 return TokError("atomicrmw cannot be unordered");
4278 if (!Ptr->getType()->isPointerTy())
4279 return Error(PtrLoc, "atomicrmw operand must be a pointer");
4280 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4281 return Error(ValLoc, "atomicrmw value and pointer type do not match");
4282 if (!Val->getType()->isIntegerTy())
4283 return Error(ValLoc, "atomicrmw operand must be an integer");
4284 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
4285 if (Size < 8 || (Size & (Size - 1)))
4286 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
4289 AtomicRMWInst *RMWI =
4290 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
4291 RMWI->setVolatile(isVolatile);
4293 return AteExtraComma ? InstExtraComma : InstNormal;
4297 /// ::= 'fence' 'singlethread'? AtomicOrdering
4298 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
4299 AtomicOrdering Ordering = NotAtomic;
4300 SynchronizationScope Scope = CrossThread;
4301 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4304 if (Ordering == Unordered)
4305 return TokError("fence cannot be unordered");
4306 if (Ordering == Monotonic)
4307 return TokError("fence cannot be monotonic");
4309 Inst = new FenceInst(Context, Ordering, Scope);
4313 /// ParseGetElementPtr
4314 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
4315 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
4320 bool InBounds = EatIfPresent(lltok::kw_inbounds);
4322 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4324 Type *BaseType = Ptr->getType();
4325 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
4326 if (!BasePointerType)
4327 return Error(Loc, "base of getelementptr must be a pointer");
4329 SmallVector<Value*, 16> Indices;
4330 bool AteExtraComma = false;
4331 while (EatIfPresent(lltok::comma)) {
4332 if (Lex.getKind() == lltok::MetadataVar) {
4333 AteExtraComma = true;
4336 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4337 if (!Val->getType()->getScalarType()->isIntegerTy())
4338 return Error(EltLoc, "getelementptr index must be an integer");
4339 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4340 return Error(EltLoc, "getelementptr index type missmatch");
4341 if (Val->getType()->isVectorTy()) {
4342 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4343 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4344 if (ValNumEl != PtrNumEl)
4345 return Error(EltLoc,
4346 "getelementptr vector index has a wrong number of elements");
4348 Indices.push_back(Val);
4351 if (!Indices.empty() && !BasePointerType->getElementType()->isSized())
4352 return Error(Loc, "base element of getelementptr must be sized");
4354 if (!GetElementPtrInst::getIndexedType(BaseType, Indices))
4355 return Error(Loc, "invalid getelementptr indices");
4356 Inst = GetElementPtrInst::Create(Ptr, Indices);
4358 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4359 return AteExtraComma ? InstExtraComma : InstNormal;
4362 /// ParseExtractValue
4363 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4364 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4365 Value *Val; LocTy Loc;
4366 SmallVector<unsigned, 4> Indices;
4368 if (ParseTypeAndValue(Val, Loc, PFS) ||
4369 ParseIndexList(Indices, AteExtraComma))
4372 if (!Val->getType()->isAggregateType())
4373 return Error(Loc, "extractvalue operand must be aggregate type");
4375 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4376 return Error(Loc, "invalid indices for extractvalue");
4377 Inst = ExtractValueInst::Create(Val, Indices);
4378 return AteExtraComma ? InstExtraComma : InstNormal;
4381 /// ParseInsertValue
4382 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4383 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4384 Value *Val0, *Val1; LocTy Loc0, Loc1;
4385 SmallVector<unsigned, 4> Indices;
4387 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4388 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4389 ParseTypeAndValue(Val1, Loc1, PFS) ||
4390 ParseIndexList(Indices, AteExtraComma))
4393 if (!Val0->getType()->isAggregateType())
4394 return Error(Loc0, "insertvalue operand must be aggregate type");
4396 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4397 return Error(Loc0, "invalid indices for insertvalue");
4398 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4399 return AteExtraComma ? InstExtraComma : InstNormal;
4402 //===----------------------------------------------------------------------===//
4403 // Embedded metadata.
4404 //===----------------------------------------------------------------------===//
4406 /// ParseMDNodeVector
4407 /// ::= Element (',' Element)*
4409 /// ::= 'null' | TypeAndValue
4410 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4411 PerFunctionState *PFS) {
4412 // Check for an empty list.
4413 if (Lex.getKind() == lltok::rbrace)
4417 // Null is a special case since it is typeless.
4418 if (EatIfPresent(lltok::kw_null)) {
4424 if (ParseTypeAndValue(V, PFS)) return true;
4426 } while (EatIfPresent(lltok::comma));