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
188 bool LLParser::ResolveForwardRefBlockAddresses(Function *TheFn,
189 std::vector<std::pair<ValID, GlobalValue*> > &Refs,
190 PerFunctionState *PFS) {
191 // Loop over all the references, resolving them.
192 for (unsigned i = 0, e = Refs.size(); i != e; ++i) {
195 if (Refs[i].first.Kind == ValID::t_LocalName)
196 Res = PFS->GetBB(Refs[i].first.StrVal, Refs[i].first.Loc);
198 Res = PFS->GetBB(Refs[i].first.UIntVal, Refs[i].first.Loc);
199 } else if (Refs[i].first.Kind == ValID::t_LocalID) {
200 return Error(Refs[i].first.Loc,
201 "cannot take address of numeric label after the function is defined");
203 Res = dyn_cast_or_null<BasicBlock>(
204 TheFn->getValueSymbolTable().lookup(Refs[i].first.StrVal));
208 return Error(Refs[i].first.Loc,
209 "referenced value is not a basic block");
211 // Get the BlockAddress for this and update references to use it.
212 BlockAddress *BA = BlockAddress::get(TheFn, Res);
213 Refs[i].second->replaceAllUsesWith(BA);
214 Refs[i].second->eraseFromParent();
220 //===----------------------------------------------------------------------===//
221 // Top-Level Entities
222 //===----------------------------------------------------------------------===//
224 bool LLParser::ParseTopLevelEntities() {
226 switch (Lex.getKind()) {
227 default: return TokError("expected top-level entity");
228 case lltok::Eof: return false;
229 case lltok::kw_declare: if (ParseDeclare()) return true; break;
230 case lltok::kw_define: if (ParseDefine()) return true; break;
231 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
232 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
233 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
234 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
235 case lltok::LocalVar: if (ParseNamedType()) return true; break;
236 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
237 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
238 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
239 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
241 // The Global variable production with no name can have many different
242 // optional leading prefixes, the production is:
243 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
244 // OptionalAddrSpace OptionalUnNammedAddr
245 // ('constant'|'global') ...
246 case lltok::kw_private: // OptionalLinkage
247 case lltok::kw_linker_private: // OptionalLinkage
248 case lltok::kw_linker_private_weak: // OptionalLinkage
249 case lltok::kw_internal: // OptionalLinkage
250 case lltok::kw_weak: // OptionalLinkage
251 case lltok::kw_weak_odr: // OptionalLinkage
252 case lltok::kw_linkonce: // OptionalLinkage
253 case lltok::kw_linkonce_odr: // OptionalLinkage
254 case lltok::kw_appending: // OptionalLinkage
255 case lltok::kw_dllexport: // OptionalLinkage
256 case lltok::kw_common: // OptionalLinkage
257 case lltok::kw_dllimport: // OptionalLinkage
258 case lltok::kw_extern_weak: // OptionalLinkage
259 case lltok::kw_external: { // OptionalLinkage
260 unsigned Linkage, Visibility;
261 if (ParseOptionalLinkage(Linkage) ||
262 ParseOptionalVisibility(Visibility) ||
263 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
267 case lltok::kw_default: // OptionalVisibility
268 case lltok::kw_hidden: // OptionalVisibility
269 case lltok::kw_protected: { // OptionalVisibility
271 if (ParseOptionalVisibility(Visibility) ||
272 ParseGlobal("", SMLoc(), 0, false, Visibility))
277 case lltok::kw_thread_local: // OptionalThreadLocal
278 case lltok::kw_addrspace: // OptionalAddrSpace
279 case lltok::kw_constant: // GlobalType
280 case lltok::kw_global: // GlobalType
281 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
284 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
291 /// ::= 'module' 'asm' STRINGCONSTANT
292 bool LLParser::ParseModuleAsm() {
293 assert(Lex.getKind() == lltok::kw_module);
297 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
298 ParseStringConstant(AsmStr)) return true;
300 M->appendModuleInlineAsm(AsmStr);
305 /// ::= 'target' 'triple' '=' STRINGCONSTANT
306 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
307 bool LLParser::ParseTargetDefinition() {
308 assert(Lex.getKind() == lltok::kw_target);
311 default: return TokError("unknown target property");
312 case lltok::kw_triple:
314 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
315 ParseStringConstant(Str))
317 M->setTargetTriple(Str);
319 case lltok::kw_datalayout:
321 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
322 ParseStringConstant(Str))
324 M->setDataLayout(Str);
330 /// ::= 'deplibs' '=' '[' ']'
331 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
332 /// FIXME: Remove in 4.0. Currently parse, but ignore.
333 bool LLParser::ParseDepLibs() {
334 assert(Lex.getKind() == lltok::kw_deplibs);
336 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
337 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
340 if (EatIfPresent(lltok::rsquare))
345 if (ParseStringConstant(Str)) return true;
346 } while (EatIfPresent(lltok::comma));
348 return ParseToken(lltok::rsquare, "expected ']' at end of list");
351 /// ParseUnnamedType:
352 /// ::= LocalVarID '=' 'type' type
353 bool LLParser::ParseUnnamedType() {
354 LocTy TypeLoc = Lex.getLoc();
355 unsigned TypeID = Lex.getUIntVal();
356 Lex.Lex(); // eat LocalVarID;
358 if (ParseToken(lltok::equal, "expected '=' after name") ||
359 ParseToken(lltok::kw_type, "expected 'type' after '='"))
362 if (TypeID >= NumberedTypes.size())
363 NumberedTypes.resize(TypeID+1);
366 if (ParseStructDefinition(TypeLoc, "",
367 NumberedTypes[TypeID], Result)) return true;
369 if (!isa<StructType>(Result)) {
370 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
372 return Error(TypeLoc, "non-struct types may not be recursive");
373 Entry.first = Result;
374 Entry.second = SMLoc();
382 /// ::= LocalVar '=' 'type' type
383 bool LLParser::ParseNamedType() {
384 std::string Name = Lex.getStrVal();
385 LocTy NameLoc = Lex.getLoc();
386 Lex.Lex(); // eat LocalVar.
388 if (ParseToken(lltok::equal, "expected '=' after name") ||
389 ParseToken(lltok::kw_type, "expected 'type' after name"))
393 if (ParseStructDefinition(NameLoc, Name,
394 NamedTypes[Name], Result)) return true;
396 if (!isa<StructType>(Result)) {
397 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
399 return Error(NameLoc, "non-struct types may not be recursive");
400 Entry.first = Result;
401 Entry.second = SMLoc();
409 /// ::= 'declare' FunctionHeader
410 bool LLParser::ParseDeclare() {
411 assert(Lex.getKind() == lltok::kw_declare);
415 return ParseFunctionHeader(F, false);
419 /// ::= 'define' FunctionHeader '{' ...
420 bool LLParser::ParseDefine() {
421 assert(Lex.getKind() == lltok::kw_define);
425 return ParseFunctionHeader(F, true) ||
426 ParseFunctionBody(*F);
432 bool LLParser::ParseGlobalType(bool &IsConstant) {
433 if (Lex.getKind() == lltok::kw_constant)
435 else if (Lex.getKind() == lltok::kw_global)
439 return TokError("expected 'global' or 'constant'");
445 /// ParseUnnamedGlobal:
446 /// OptionalVisibility ALIAS ...
447 /// OptionalLinkage OptionalVisibility ... -> global variable
448 /// GlobalID '=' OptionalVisibility ALIAS ...
449 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
450 bool LLParser::ParseUnnamedGlobal() {
451 unsigned VarID = NumberedVals.size();
453 LocTy NameLoc = Lex.getLoc();
455 // Handle the GlobalID form.
456 if (Lex.getKind() == lltok::GlobalID) {
457 if (Lex.getUIntVal() != VarID)
458 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
460 Lex.Lex(); // eat GlobalID;
462 if (ParseToken(lltok::equal, "expected '=' after name"))
467 unsigned Linkage, Visibility;
468 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
469 ParseOptionalVisibility(Visibility))
472 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
473 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
474 return ParseAlias(Name, NameLoc, Visibility);
477 /// ParseNamedGlobal:
478 /// GlobalVar '=' OptionalVisibility ALIAS ...
479 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
480 bool LLParser::ParseNamedGlobal() {
481 assert(Lex.getKind() == lltok::GlobalVar);
482 LocTy NameLoc = Lex.getLoc();
483 std::string Name = Lex.getStrVal();
487 unsigned Linkage, Visibility;
488 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
489 ParseOptionalLinkage(Linkage, HasLinkage) ||
490 ParseOptionalVisibility(Visibility))
493 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
494 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
495 return ParseAlias(Name, NameLoc, Visibility);
499 // ::= '!' STRINGCONSTANT
500 bool LLParser::ParseMDString(MDString *&Result) {
502 if (ParseStringConstant(Str)) return true;
503 Result = MDString::get(Context, Str);
508 // ::= '!' MDNodeNumber
510 /// This version of ParseMDNodeID returns the slot number and null in the case
511 /// of a forward reference.
512 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
513 // !{ ..., !42, ... }
514 if (ParseUInt32(SlotNo)) return true;
516 // Check existing MDNode.
517 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != 0)
518 Result = NumberedMetadata[SlotNo];
524 bool LLParser::ParseMDNodeID(MDNode *&Result) {
525 // !{ ..., !42, ... }
527 if (ParseMDNodeID(Result, MID)) return true;
529 // If not a forward reference, just return it now.
530 if (Result) return false;
532 // Otherwise, create MDNode forward reference.
533 MDNode *FwdNode = MDNode::getTemporary(Context, None);
534 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
536 if (NumberedMetadata.size() <= MID)
537 NumberedMetadata.resize(MID+1);
538 NumberedMetadata[MID] = FwdNode;
543 /// ParseNamedMetadata:
544 /// !foo = !{ !1, !2 }
545 bool LLParser::ParseNamedMetadata() {
546 assert(Lex.getKind() == lltok::MetadataVar);
547 std::string Name = Lex.getStrVal();
550 if (ParseToken(lltok::equal, "expected '=' here") ||
551 ParseToken(lltok::exclaim, "Expected '!' here") ||
552 ParseToken(lltok::lbrace, "Expected '{' here"))
555 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
556 if (Lex.getKind() != lltok::rbrace)
558 if (ParseToken(lltok::exclaim, "Expected '!' here"))
562 if (ParseMDNodeID(N)) return true;
564 } while (EatIfPresent(lltok::comma));
566 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
572 /// ParseStandaloneMetadata:
574 bool LLParser::ParseStandaloneMetadata() {
575 assert(Lex.getKind() == lltok::exclaim);
577 unsigned MetadataID = 0;
581 SmallVector<Value *, 16> Elts;
582 if (ParseUInt32(MetadataID) ||
583 ParseToken(lltok::equal, "expected '=' here") ||
584 ParseType(Ty, TyLoc) ||
585 ParseToken(lltok::exclaim, "Expected '!' here") ||
586 ParseToken(lltok::lbrace, "Expected '{' here") ||
587 ParseMDNodeVector(Elts, NULL) ||
588 ParseToken(lltok::rbrace, "expected end of metadata node"))
591 MDNode *Init = MDNode::get(Context, Elts);
593 // See if this was forward referenced, if so, handle it.
594 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
595 FI = ForwardRefMDNodes.find(MetadataID);
596 if (FI != ForwardRefMDNodes.end()) {
597 MDNode *Temp = FI->second.first;
598 Temp->replaceAllUsesWith(Init);
599 MDNode::deleteTemporary(Temp);
600 ForwardRefMDNodes.erase(FI);
602 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
604 if (MetadataID >= NumberedMetadata.size())
605 NumberedMetadata.resize(MetadataID+1);
607 if (NumberedMetadata[MetadataID] != 0)
608 return TokError("Metadata id is already used");
609 NumberedMetadata[MetadataID] = Init;
616 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
619 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
620 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
622 /// Everything through visibility has already been parsed.
624 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
625 unsigned Visibility) {
626 assert(Lex.getKind() == lltok::kw_alias);
628 LocTy LinkageLoc = Lex.getLoc();
630 if (ParseOptionalLinkage(L))
633 GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
635 if(!GlobalAlias::isValidLinkage(Linkage))
636 return Error(LinkageLoc, "invalid linkage type for alias");
639 LocTy AliaseeLoc = Lex.getLoc();
640 if (Lex.getKind() != lltok::kw_bitcast &&
641 Lex.getKind() != lltok::kw_getelementptr) {
642 if (ParseGlobalTypeAndValue(Aliasee)) return true;
644 // The bitcast dest type is not present, it is implied by the dest type.
646 if (ParseValID(ID)) return true;
647 if (ID.Kind != ValID::t_Constant)
648 return Error(AliaseeLoc, "invalid aliasee");
649 Aliasee = ID.ConstantVal;
652 if (!Aliasee->getType()->isPointerTy())
653 return Error(AliaseeLoc, "alias must have pointer type");
655 // Okay, create the alias but do not insert it into the module yet.
656 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
657 (GlobalValue::LinkageTypes)Linkage, Name,
659 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
661 // See if this value already exists in the symbol table. If so, it is either
662 // a redefinition or a definition of a forward reference.
663 if (GlobalValue *Val = M->getNamedValue(Name)) {
664 // See if this was a redefinition. If so, there is no entry in
666 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
667 I = ForwardRefVals.find(Name);
668 if (I == ForwardRefVals.end())
669 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
671 // Otherwise, this was a definition of forward ref. Verify that types
673 if (Val->getType() != GA->getType())
674 return Error(NameLoc,
675 "forward reference and definition of alias have different types");
677 // If they agree, just RAUW the old value with the alias and remove the
679 Val->replaceAllUsesWith(GA);
680 Val->eraseFromParent();
681 ForwardRefVals.erase(I);
684 // Insert into the module, we know its name won't collide now.
685 M->getAliasList().push_back(GA);
686 assert(GA->getName() == Name && "Should not be a name conflict!");
692 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
693 /// OptionalAddrSpace OptionalUnNammedAddr
694 /// OptionalExternallyInitialized GlobalType Type Const
695 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
696 /// OptionalAddrSpace OptionalUnNammedAddr
697 /// OptionalExternallyInitialized GlobalType Type Const
699 /// Everything through visibility has been parsed already.
701 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
702 unsigned Linkage, bool HasLinkage,
703 unsigned Visibility) {
705 bool IsConstant, UnnamedAddr, IsExternallyInitialized;
706 GlobalVariable::ThreadLocalMode TLM;
707 LocTy UnnamedAddrLoc;
708 LocTy IsExternallyInitializedLoc;
712 if (ParseOptionalThreadLocal(TLM) ||
713 ParseOptionalAddrSpace(AddrSpace) ||
714 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
716 ParseOptionalToken(lltok::kw_externally_initialized,
717 IsExternallyInitialized,
718 &IsExternallyInitializedLoc) ||
719 ParseGlobalType(IsConstant) ||
720 ParseType(Ty, TyLoc))
723 // If the linkage is specified and is external, then no initializer is
726 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
727 Linkage != GlobalValue::ExternalWeakLinkage &&
728 Linkage != GlobalValue::ExternalLinkage)) {
729 if (ParseGlobalValue(Ty, Init))
733 if (Ty->isFunctionTy() || Ty->isLabelTy())
734 return Error(TyLoc, "invalid type for global variable");
736 GlobalVariable *GV = 0;
738 // See if the global was forward referenced, if so, use the global.
740 if (GlobalValue *GVal = M->getNamedValue(Name)) {
741 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
742 return Error(NameLoc, "redefinition of global '@" + Name + "'");
743 GV = cast<GlobalVariable>(GVal);
746 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
747 I = ForwardRefValIDs.find(NumberedVals.size());
748 if (I != ForwardRefValIDs.end()) {
749 GV = cast<GlobalVariable>(I->second.first);
750 ForwardRefValIDs.erase(I);
755 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
756 Name, 0, GlobalVariable::NotThreadLocal,
759 if (GV->getType()->getElementType() != Ty)
761 "forward reference and definition of global have different types");
763 // Move the forward-reference to the correct spot in the module.
764 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
768 NumberedVals.push_back(GV);
770 // Set the parsed properties on the global.
772 GV->setInitializer(Init);
773 GV->setConstant(IsConstant);
774 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
775 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
776 GV->setExternallyInitialized(IsExternallyInitialized);
777 GV->setThreadLocalMode(TLM);
778 GV->setUnnamedAddr(UnnamedAddr);
780 // Parse attributes on the global.
781 while (Lex.getKind() == lltok::comma) {
784 if (Lex.getKind() == lltok::kw_section) {
786 GV->setSection(Lex.getStrVal());
787 if (ParseToken(lltok::StringConstant, "expected global section string"))
789 } else if (Lex.getKind() == lltok::kw_align) {
791 if (ParseOptionalAlignment(Alignment)) return true;
792 GV->setAlignment(Alignment);
794 TokError("unknown global variable property!");
801 /// ParseUnnamedAttrGrp
802 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
803 bool LLParser::ParseUnnamedAttrGrp() {
804 assert(Lex.getKind() == lltok::kw_attributes);
805 LocTy AttrGrpLoc = Lex.getLoc();
808 assert(Lex.getKind() == lltok::AttrGrpID);
809 unsigned VarID = Lex.getUIntVal();
810 std::vector<unsigned> unused;
814 if (ParseToken(lltok::equal, "expected '=' here") ||
815 ParseToken(lltok::lbrace, "expected '{' here") ||
816 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
818 ParseToken(lltok::rbrace, "expected end of attribute group"))
821 if (!NumberedAttrBuilders[VarID].hasAttributes())
822 return Error(AttrGrpLoc, "attribute group has no attributes");
827 /// ParseFnAttributeValuePairs
828 /// ::= <attr> | <attr> '=' <value>
829 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
830 std::vector<unsigned> &FwdRefAttrGrps,
831 bool inAttrGrp, LocTy &BuiltinLoc) {
832 bool HaveError = false;
837 lltok::Kind Token = Lex.getKind();
838 if (Token == lltok::kw_builtin)
839 BuiltinLoc = Lex.getLoc();
842 if (!inAttrGrp) return HaveError;
843 return Error(Lex.getLoc(), "unterminated attribute group");
848 case lltok::AttrGrpID: {
849 // Allow a function to reference an attribute group:
851 // define void @foo() #1 { ... }
855 "cannot have an attribute group reference in an attribute group");
857 unsigned AttrGrpNum = Lex.getUIntVal();
858 if (inAttrGrp) break;
860 // Save the reference to the attribute group. We'll fill it in later.
861 FwdRefAttrGrps.push_back(AttrGrpNum);
864 // Target-dependent attributes:
865 case lltok::StringConstant: {
866 std::string Attr = Lex.getStrVal();
869 if (EatIfPresent(lltok::equal) &&
870 ParseStringConstant(Val))
873 B.addAttribute(Attr, Val);
877 // Target-independent attributes:
878 case lltok::kw_align: {
879 // As a hack, we allow function alignment to be initially parsed as an
880 // attribute on a function declaration/definition or added to an attribute
881 // group and later moved to the alignment field.
885 if (ParseToken(lltok::equal, "expected '=' here") ||
886 ParseUInt32(Alignment))
889 if (ParseOptionalAlignment(Alignment))
892 B.addAlignmentAttr(Alignment);
895 case lltok::kw_alignstack: {
899 if (ParseToken(lltok::equal, "expected '=' here") ||
900 ParseUInt32(Alignment))
903 if (ParseOptionalStackAlignment(Alignment))
906 B.addStackAlignmentAttr(Alignment);
909 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
910 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
911 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
912 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
913 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
914 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
915 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
916 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
917 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
918 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
919 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
920 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
921 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
922 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
923 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
924 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
925 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
926 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
927 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
928 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
929 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
930 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
931 case lltok::kw_sanitize_address: B.addAttribute(Attribute::SanitizeAddress); break;
932 case lltok::kw_sanitize_thread: B.addAttribute(Attribute::SanitizeThread); break;
933 case lltok::kw_sanitize_memory: B.addAttribute(Attribute::SanitizeMemory); break;
934 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
937 case lltok::kw_inreg:
938 case lltok::kw_signext:
939 case lltok::kw_zeroext:
942 "invalid use of attribute on a function");
944 case lltok::kw_byval:
946 case lltok::kw_noalias:
947 case lltok::kw_nocapture:
948 case lltok::kw_returned:
952 "invalid use of parameter-only attribute on a function");
960 //===----------------------------------------------------------------------===//
961 // GlobalValue Reference/Resolution Routines.
962 //===----------------------------------------------------------------------===//
964 /// GetGlobalVal - Get a value with the specified name or ID, creating a
965 /// forward reference record if needed. This can return null if the value
966 /// exists but does not have the right type.
967 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
969 PointerType *PTy = dyn_cast<PointerType>(Ty);
971 Error(Loc, "global variable reference must have pointer type");
975 // Look this name up in the normal function symbol table.
977 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
979 // If this is a forward reference for the value, see if we already created a
980 // forward ref record.
982 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
983 I = ForwardRefVals.find(Name);
984 if (I != ForwardRefVals.end())
985 Val = I->second.first;
988 // If we have the value in the symbol table or fwd-ref table, return it.
990 if (Val->getType() == Ty) return Val;
991 Error(Loc, "'@" + Name + "' defined with type '" +
992 getTypeString(Val->getType()) + "'");
996 // Otherwise, create a new forward reference for this value and remember it.
998 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
999 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1001 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1002 GlobalValue::ExternalWeakLinkage, 0, Name,
1003 0, GlobalVariable::NotThreadLocal,
1004 PTy->getAddressSpace());
1006 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1010 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1011 PointerType *PTy = dyn_cast<PointerType>(Ty);
1013 Error(Loc, "global variable reference must have pointer type");
1017 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1019 // If this is a forward reference for the value, see if we already created a
1020 // forward ref record.
1022 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1023 I = ForwardRefValIDs.find(ID);
1024 if (I != ForwardRefValIDs.end())
1025 Val = I->second.first;
1028 // If we have the value in the symbol table or fwd-ref table, return it.
1030 if (Val->getType() == Ty) return Val;
1031 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1032 getTypeString(Val->getType()) + "'");
1036 // Otherwise, create a new forward reference for this value and remember it.
1037 GlobalValue *FwdVal;
1038 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1039 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1041 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1042 GlobalValue::ExternalWeakLinkage, 0, "");
1044 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1049 //===----------------------------------------------------------------------===//
1051 //===----------------------------------------------------------------------===//
1053 /// ParseToken - If the current token has the specified kind, eat it and return
1054 /// success. Otherwise, emit the specified error and return failure.
1055 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1056 if (Lex.getKind() != T)
1057 return TokError(ErrMsg);
1062 /// ParseStringConstant
1063 /// ::= StringConstant
1064 bool LLParser::ParseStringConstant(std::string &Result) {
1065 if (Lex.getKind() != lltok::StringConstant)
1066 return TokError("expected string constant");
1067 Result = Lex.getStrVal();
1074 bool LLParser::ParseUInt32(unsigned &Val) {
1075 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1076 return TokError("expected integer");
1077 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1078 if (Val64 != unsigned(Val64))
1079 return TokError("expected 32-bit integer (too large)");
1086 /// := 'localdynamic'
1087 /// := 'initialexec'
1089 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1090 switch (Lex.getKind()) {
1092 return TokError("expected localdynamic, initialexec or localexec");
1093 case lltok::kw_localdynamic:
1094 TLM = GlobalVariable::LocalDynamicTLSModel;
1096 case lltok::kw_initialexec:
1097 TLM = GlobalVariable::InitialExecTLSModel;
1099 case lltok::kw_localexec:
1100 TLM = GlobalVariable::LocalExecTLSModel;
1108 /// ParseOptionalThreadLocal
1110 /// := 'thread_local'
1111 /// := 'thread_local' '(' tlsmodel ')'
1112 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1113 TLM = GlobalVariable::NotThreadLocal;
1114 if (!EatIfPresent(lltok::kw_thread_local))
1117 TLM = GlobalVariable::GeneralDynamicTLSModel;
1118 if (Lex.getKind() == lltok::lparen) {
1120 return ParseTLSModel(TLM) ||
1121 ParseToken(lltok::rparen, "expected ')' after thread local model");
1126 /// ParseOptionalAddrSpace
1128 /// := 'addrspace' '(' uint32 ')'
1129 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1131 if (!EatIfPresent(lltok::kw_addrspace))
1133 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1134 ParseUInt32(AddrSpace) ||
1135 ParseToken(lltok::rparen, "expected ')' in address space");
1138 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1139 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1140 bool HaveError = false;
1145 lltok::Kind Token = Lex.getKind();
1147 default: // End of attributes.
1149 case lltok::kw_align: {
1151 if (ParseOptionalAlignment(Alignment))
1153 B.addAlignmentAttr(Alignment);
1156 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1157 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1158 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1159 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1160 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1161 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1162 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1163 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1164 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1165 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1166 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1168 case lltok::kw_alignstack:
1169 case lltok::kw_alwaysinline:
1170 case lltok::kw_builtin:
1171 case lltok::kw_inlinehint:
1172 case lltok::kw_minsize:
1173 case lltok::kw_naked:
1174 case lltok::kw_nobuiltin:
1175 case lltok::kw_noduplicate:
1176 case lltok::kw_noimplicitfloat:
1177 case lltok::kw_noinline:
1178 case lltok::kw_nonlazybind:
1179 case lltok::kw_noredzone:
1180 case lltok::kw_noreturn:
1181 case lltok::kw_nounwind:
1182 case lltok::kw_optnone:
1183 case lltok::kw_optsize:
1184 case lltok::kw_returns_twice:
1185 case lltok::kw_sanitize_address:
1186 case lltok::kw_sanitize_memory:
1187 case lltok::kw_sanitize_thread:
1189 case lltok::kw_sspreq:
1190 case lltok::kw_sspstrong:
1191 case lltok::kw_uwtable:
1192 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1200 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1201 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1202 bool HaveError = false;
1207 lltok::Kind Token = Lex.getKind();
1209 default: // End of attributes.
1211 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1212 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1213 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1214 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1217 case lltok::kw_align:
1218 case lltok::kw_byval:
1219 case lltok::kw_nest:
1220 case lltok::kw_nocapture:
1221 case lltok::kw_returned:
1222 case lltok::kw_sret:
1223 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1226 case lltok::kw_alignstack:
1227 case lltok::kw_alwaysinline:
1228 case lltok::kw_builtin:
1229 case lltok::kw_cold:
1230 case lltok::kw_inlinehint:
1231 case lltok::kw_minsize:
1232 case lltok::kw_naked:
1233 case lltok::kw_nobuiltin:
1234 case lltok::kw_noduplicate:
1235 case lltok::kw_noimplicitfloat:
1236 case lltok::kw_noinline:
1237 case lltok::kw_nonlazybind:
1238 case lltok::kw_noredzone:
1239 case lltok::kw_noreturn:
1240 case lltok::kw_nounwind:
1241 case lltok::kw_optnone:
1242 case lltok::kw_optsize:
1243 case lltok::kw_returns_twice:
1244 case lltok::kw_sanitize_address:
1245 case lltok::kw_sanitize_memory:
1246 case lltok::kw_sanitize_thread:
1248 case lltok::kw_sspreq:
1249 case lltok::kw_sspstrong:
1250 case lltok::kw_uwtable:
1251 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1254 case lltok::kw_readnone:
1255 case lltok::kw_readonly:
1256 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1263 /// ParseOptionalLinkage
1266 /// ::= 'linker_private'
1267 /// ::= 'linker_private_weak'
1272 /// ::= 'linkonce_odr'
1273 /// ::= 'available_externally'
1278 /// ::= 'extern_weak'
1280 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1282 switch (Lex.getKind()) {
1283 default: Res=GlobalValue::ExternalLinkage; return false;
1284 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1285 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1286 case lltok::kw_linker_private_weak:
1287 Res = GlobalValue::LinkerPrivateWeakLinkage;
1289 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1290 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1291 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1292 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1293 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1294 case lltok::kw_available_externally:
1295 Res = GlobalValue::AvailableExternallyLinkage;
1297 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1298 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1299 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1300 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1301 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1302 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1309 /// ParseOptionalVisibility
1315 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1316 switch (Lex.getKind()) {
1317 default: Res = GlobalValue::DefaultVisibility; return false;
1318 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1319 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1320 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1326 /// ParseOptionalCallingConv
1330 /// ::= 'kw_intel_ocl_bicc'
1332 /// ::= 'x86_stdcallcc'
1333 /// ::= 'x86_fastcallcc'
1334 /// ::= 'x86_thiscallcc'
1335 /// ::= 'arm_apcscc'
1336 /// ::= 'arm_aapcscc'
1337 /// ::= 'arm_aapcs_vfpcc'
1338 /// ::= 'msp430_intrcc'
1339 /// ::= 'ptx_kernel'
1340 /// ::= 'ptx_device'
1342 /// ::= 'spir_kernel'
1343 /// ::= 'x86_64_sysvcc'
1344 /// ::= 'x86_64_win64cc'
1345 /// ::= 'webkit_jscc'
1349 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1350 switch (Lex.getKind()) {
1351 default: CC = CallingConv::C; return false;
1352 case lltok::kw_ccc: CC = CallingConv::C; break;
1353 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1354 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1355 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1356 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1357 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1358 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1359 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1360 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1361 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1362 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1363 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1364 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1365 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1366 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1367 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1368 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1369 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1370 case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1371 case lltok::kw_cc: {
1372 unsigned ArbitraryCC;
1374 if (ParseUInt32(ArbitraryCC))
1376 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1385 /// ParseInstructionMetadata
1386 /// ::= !dbg !42 (',' !dbg !57)*
1387 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1388 PerFunctionState *PFS) {
1390 if (Lex.getKind() != lltok::MetadataVar)
1391 return TokError("expected metadata after comma");
1393 std::string Name = Lex.getStrVal();
1394 unsigned MDK = M->getMDKindID(Name);
1398 SMLoc Loc = Lex.getLoc();
1400 if (ParseToken(lltok::exclaim, "expected '!' here"))
1403 // This code is similar to that of ParseMetadataValue, however it needs to
1404 // have special-case code for a forward reference; see the comments on
1405 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1406 // at the top level here.
1407 if (Lex.getKind() == lltok::lbrace) {
1409 if (ParseMetadataListValue(ID, PFS))
1411 assert(ID.Kind == ValID::t_MDNode);
1412 Inst->setMetadata(MDK, ID.MDNodeVal);
1414 unsigned NodeID = 0;
1415 if (ParseMDNodeID(Node, NodeID))
1418 // If we got the node, add it to the instruction.
1419 Inst->setMetadata(MDK, Node);
1421 MDRef R = { Loc, MDK, NodeID };
1422 // Otherwise, remember that this should be resolved later.
1423 ForwardRefInstMetadata[Inst].push_back(R);
1427 if (MDK == LLVMContext::MD_tbaa)
1428 InstsWithTBAATag.push_back(Inst);
1430 // If this is the end of the list, we're done.
1431 } while (EatIfPresent(lltok::comma));
1435 /// ParseOptionalAlignment
1438 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1440 if (!EatIfPresent(lltok::kw_align))
1442 LocTy AlignLoc = Lex.getLoc();
1443 if (ParseUInt32(Alignment)) return true;
1444 if (!isPowerOf2_32(Alignment))
1445 return Error(AlignLoc, "alignment is not a power of two");
1446 if (Alignment > Value::MaximumAlignment)
1447 return Error(AlignLoc, "huge alignments are not supported yet");
1451 /// ParseOptionalCommaAlign
1455 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1457 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1458 bool &AteExtraComma) {
1459 AteExtraComma = false;
1460 while (EatIfPresent(lltok::comma)) {
1461 // Metadata at the end is an early exit.
1462 if (Lex.getKind() == lltok::MetadataVar) {
1463 AteExtraComma = true;
1467 if (Lex.getKind() != lltok::kw_align)
1468 return Error(Lex.getLoc(), "expected metadata or 'align'");
1470 if (ParseOptionalAlignment(Alignment)) return true;
1476 /// ParseScopeAndOrdering
1477 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1480 /// This sets Scope and Ordering to the parsed values.
1481 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1482 AtomicOrdering &Ordering) {
1486 Scope = CrossThread;
1487 if (EatIfPresent(lltok::kw_singlethread))
1488 Scope = SingleThread;
1489 switch (Lex.getKind()) {
1490 default: return TokError("Expected ordering on atomic instruction");
1491 case lltok::kw_unordered: Ordering = Unordered; break;
1492 case lltok::kw_monotonic: Ordering = Monotonic; break;
1493 case lltok::kw_acquire: Ordering = Acquire; break;
1494 case lltok::kw_release: Ordering = Release; break;
1495 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1496 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1502 /// ParseOptionalStackAlignment
1504 /// ::= 'alignstack' '(' 4 ')'
1505 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1507 if (!EatIfPresent(lltok::kw_alignstack))
1509 LocTy ParenLoc = Lex.getLoc();
1510 if (!EatIfPresent(lltok::lparen))
1511 return Error(ParenLoc, "expected '('");
1512 LocTy AlignLoc = Lex.getLoc();
1513 if (ParseUInt32(Alignment)) return true;
1514 ParenLoc = Lex.getLoc();
1515 if (!EatIfPresent(lltok::rparen))
1516 return Error(ParenLoc, "expected ')'");
1517 if (!isPowerOf2_32(Alignment))
1518 return Error(AlignLoc, "stack alignment is not a power of two");
1522 /// ParseIndexList - This parses the index list for an insert/extractvalue
1523 /// instruction. This sets AteExtraComma in the case where we eat an extra
1524 /// comma at the end of the line and find that it is followed by metadata.
1525 /// Clients that don't allow metadata can call the version of this function that
1526 /// only takes one argument.
1529 /// ::= (',' uint32)+
1531 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1532 bool &AteExtraComma) {
1533 AteExtraComma = false;
1535 if (Lex.getKind() != lltok::comma)
1536 return TokError("expected ',' as start of index list");
1538 while (EatIfPresent(lltok::comma)) {
1539 if (Lex.getKind() == lltok::MetadataVar) {
1540 AteExtraComma = true;
1544 if (ParseUInt32(Idx)) return true;
1545 Indices.push_back(Idx);
1551 //===----------------------------------------------------------------------===//
1553 //===----------------------------------------------------------------------===//
1555 /// ParseType - Parse a type.
1556 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1557 SMLoc TypeLoc = Lex.getLoc();
1558 switch (Lex.getKind()) {
1560 return TokError("expected type");
1562 // Type ::= 'float' | 'void' (etc)
1563 Result = Lex.getTyVal();
1567 // Type ::= StructType
1568 if (ParseAnonStructType(Result, false))
1571 case lltok::lsquare:
1572 // Type ::= '[' ... ']'
1573 Lex.Lex(); // eat the lsquare.
1574 if (ParseArrayVectorType(Result, false))
1577 case lltok::less: // Either vector or packed struct.
1578 // Type ::= '<' ... '>'
1580 if (Lex.getKind() == lltok::lbrace) {
1581 if (ParseAnonStructType(Result, true) ||
1582 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1584 } else if (ParseArrayVectorType(Result, true))
1587 case lltok::LocalVar: {
1589 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1591 // If the type hasn't been defined yet, create a forward definition and
1592 // remember where that forward def'n was seen (in case it never is defined).
1593 if (Entry.first == 0) {
1594 Entry.first = StructType::create(Context, Lex.getStrVal());
1595 Entry.second = Lex.getLoc();
1597 Result = Entry.first;
1602 case lltok::LocalVarID: {
1604 if (Lex.getUIntVal() >= NumberedTypes.size())
1605 NumberedTypes.resize(Lex.getUIntVal()+1);
1606 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1608 // If the type hasn't been defined yet, create a forward definition and
1609 // remember where that forward def'n was seen (in case it never is defined).
1610 if (Entry.first == 0) {
1611 Entry.first = StructType::create(Context);
1612 Entry.second = Lex.getLoc();
1614 Result = Entry.first;
1620 // Parse the type suffixes.
1622 switch (Lex.getKind()) {
1625 if (!AllowVoid && Result->isVoidTy())
1626 return Error(TypeLoc, "void type only allowed for function results");
1629 // Type ::= Type '*'
1631 if (Result->isLabelTy())
1632 return TokError("basic block pointers are invalid");
1633 if (Result->isVoidTy())
1634 return TokError("pointers to void are invalid - use i8* instead");
1635 if (!PointerType::isValidElementType(Result))
1636 return TokError("pointer to this type is invalid");
1637 Result = PointerType::getUnqual(Result);
1641 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1642 case lltok::kw_addrspace: {
1643 if (Result->isLabelTy())
1644 return TokError("basic block pointers are invalid");
1645 if (Result->isVoidTy())
1646 return TokError("pointers to void are invalid; use i8* instead");
1647 if (!PointerType::isValidElementType(Result))
1648 return TokError("pointer to this type is invalid");
1650 if (ParseOptionalAddrSpace(AddrSpace) ||
1651 ParseToken(lltok::star, "expected '*' in address space"))
1654 Result = PointerType::get(Result, AddrSpace);
1658 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1660 if (ParseFunctionType(Result))
1667 /// ParseParameterList
1669 /// ::= '(' Arg (',' Arg)* ')'
1671 /// ::= Type OptionalAttributes Value OptionalAttributes
1672 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1673 PerFunctionState &PFS) {
1674 if (ParseToken(lltok::lparen, "expected '(' in call"))
1677 unsigned AttrIndex = 1;
1678 while (Lex.getKind() != lltok::rparen) {
1679 // If this isn't the first argument, we need a comma.
1680 if (!ArgList.empty() &&
1681 ParseToken(lltok::comma, "expected ',' in argument list"))
1684 // Parse the argument.
1687 AttrBuilder ArgAttrs;
1689 if (ParseType(ArgTy, ArgLoc))
1692 // Otherwise, handle normal operands.
1693 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1695 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1700 Lex.Lex(); // Lex the ')'.
1706 /// ParseArgumentList - Parse the argument list for a function type or function
1708 /// ::= '(' ArgTypeListI ')'
1712 /// ::= ArgTypeList ',' '...'
1713 /// ::= ArgType (',' ArgType)*
1715 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1718 assert(Lex.getKind() == lltok::lparen);
1719 Lex.Lex(); // eat the (.
1721 if (Lex.getKind() == lltok::rparen) {
1723 } else if (Lex.getKind() == lltok::dotdotdot) {
1727 LocTy TypeLoc = Lex.getLoc();
1732 if (ParseType(ArgTy) ||
1733 ParseOptionalParamAttrs(Attrs)) return true;
1735 if (ArgTy->isVoidTy())
1736 return Error(TypeLoc, "argument can not have void type");
1738 if (Lex.getKind() == lltok::LocalVar) {
1739 Name = Lex.getStrVal();
1743 if (!FunctionType::isValidArgumentType(ArgTy))
1744 return Error(TypeLoc, "invalid type for function argument");
1746 unsigned AttrIndex = 1;
1747 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1748 AttributeSet::get(ArgTy->getContext(),
1749 AttrIndex++, Attrs), Name));
1751 while (EatIfPresent(lltok::comma)) {
1752 // Handle ... at end of arg list.
1753 if (EatIfPresent(lltok::dotdotdot)) {
1758 // Otherwise must be an argument type.
1759 TypeLoc = Lex.getLoc();
1760 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1762 if (ArgTy->isVoidTy())
1763 return Error(TypeLoc, "argument can not have void type");
1765 if (Lex.getKind() == lltok::LocalVar) {
1766 Name = Lex.getStrVal();
1772 if (!ArgTy->isFirstClassType())
1773 return Error(TypeLoc, "invalid type for function argument");
1775 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1776 AttributeSet::get(ArgTy->getContext(),
1777 AttrIndex++, Attrs),
1782 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1785 /// ParseFunctionType
1786 /// ::= Type ArgumentList OptionalAttrs
1787 bool LLParser::ParseFunctionType(Type *&Result) {
1788 assert(Lex.getKind() == lltok::lparen);
1790 if (!FunctionType::isValidReturnType(Result))
1791 return TokError("invalid function return type");
1793 SmallVector<ArgInfo, 8> ArgList;
1795 if (ParseArgumentList(ArgList, isVarArg))
1798 // Reject names on the arguments lists.
1799 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1800 if (!ArgList[i].Name.empty())
1801 return Error(ArgList[i].Loc, "argument name invalid in function type");
1802 if (ArgList[i].Attrs.hasAttributes(i + 1))
1803 return Error(ArgList[i].Loc,
1804 "argument attributes invalid in function type");
1807 SmallVector<Type*, 16> ArgListTy;
1808 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1809 ArgListTy.push_back(ArgList[i].Ty);
1811 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1815 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1817 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1818 SmallVector<Type*, 8> Elts;
1819 if (ParseStructBody(Elts)) return true;
1821 Result = StructType::get(Context, Elts, Packed);
1825 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1826 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1827 std::pair<Type*, LocTy> &Entry,
1829 // If the type was already defined, diagnose the redefinition.
1830 if (Entry.first && !Entry.second.isValid())
1831 return Error(TypeLoc, "redefinition of type");
1833 // If we have opaque, just return without filling in the definition for the
1834 // struct. This counts as a definition as far as the .ll file goes.
1835 if (EatIfPresent(lltok::kw_opaque)) {
1836 // This type is being defined, so clear the location to indicate this.
1837 Entry.second = SMLoc();
1839 // If this type number has never been uttered, create it.
1840 if (Entry.first == 0)
1841 Entry.first = StructType::create(Context, Name);
1842 ResultTy = Entry.first;
1846 // If the type starts with '<', then it is either a packed struct or a vector.
1847 bool isPacked = EatIfPresent(lltok::less);
1849 // If we don't have a struct, then we have a random type alias, which we
1850 // accept for compatibility with old files. These types are not allowed to be
1851 // forward referenced and not allowed to be recursive.
1852 if (Lex.getKind() != lltok::lbrace) {
1854 return Error(TypeLoc, "forward references to non-struct type");
1858 return ParseArrayVectorType(ResultTy, true);
1859 return ParseType(ResultTy);
1862 // This type is being defined, so clear the location to indicate this.
1863 Entry.second = SMLoc();
1865 // If this type number has never been uttered, create it.
1866 if (Entry.first == 0)
1867 Entry.first = StructType::create(Context, Name);
1869 StructType *STy = cast<StructType>(Entry.first);
1871 SmallVector<Type*, 8> Body;
1872 if (ParseStructBody(Body) ||
1873 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
1876 STy->setBody(Body, isPacked);
1882 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1885 /// ::= '{' Type (',' Type)* '}'
1886 /// ::= '<' '{' '}' '>'
1887 /// ::= '<' '{' Type (',' Type)* '}' '>'
1888 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
1889 assert(Lex.getKind() == lltok::lbrace);
1890 Lex.Lex(); // Consume the '{'
1892 // Handle the empty struct.
1893 if (EatIfPresent(lltok::rbrace))
1896 LocTy EltTyLoc = Lex.getLoc();
1898 if (ParseType(Ty)) return true;
1901 if (!StructType::isValidElementType(Ty))
1902 return Error(EltTyLoc, "invalid element type for struct");
1904 while (EatIfPresent(lltok::comma)) {
1905 EltTyLoc = Lex.getLoc();
1906 if (ParseType(Ty)) return true;
1908 if (!StructType::isValidElementType(Ty))
1909 return Error(EltTyLoc, "invalid element type for struct");
1914 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
1917 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1918 /// token has already been consumed.
1920 /// ::= '[' APSINTVAL 'x' Types ']'
1921 /// ::= '<' APSINTVAL 'x' Types '>'
1922 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
1923 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1924 Lex.getAPSIntVal().getBitWidth() > 64)
1925 return TokError("expected number in address space");
1927 LocTy SizeLoc = Lex.getLoc();
1928 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1931 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1934 LocTy TypeLoc = Lex.getLoc();
1936 if (ParseType(EltTy)) return true;
1938 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1939 "expected end of sequential type"))
1944 return Error(SizeLoc, "zero element vector is illegal");
1945 if ((unsigned)Size != Size)
1946 return Error(SizeLoc, "size too large for vector");
1947 if (!VectorType::isValidElementType(EltTy))
1948 return Error(TypeLoc, "invalid vector element type");
1949 Result = VectorType::get(EltTy, unsigned(Size));
1951 if (!ArrayType::isValidElementType(EltTy))
1952 return Error(TypeLoc, "invalid array element type");
1953 Result = ArrayType::get(EltTy, Size);
1958 //===----------------------------------------------------------------------===//
1959 // Function Semantic Analysis.
1960 //===----------------------------------------------------------------------===//
1962 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1964 : P(p), F(f), FunctionNumber(functionNumber) {
1966 // Insert unnamed arguments into the NumberedVals list.
1967 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1970 NumberedVals.push_back(AI);
1973 LLParser::PerFunctionState::~PerFunctionState() {
1974 // If there were any forward referenced non-basicblock values, delete them.
1975 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1976 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1977 if (!isa<BasicBlock>(I->second.first)) {
1978 I->second.first->replaceAllUsesWith(
1979 UndefValue::get(I->second.first->getType()));
1980 delete I->second.first;
1981 I->second.first = 0;
1984 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1985 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1986 if (!isa<BasicBlock>(I->second.first)) {
1987 I->second.first->replaceAllUsesWith(
1988 UndefValue::get(I->second.first->getType()));
1989 delete I->second.first;
1990 I->second.first = 0;
1994 bool LLParser::PerFunctionState::FinishFunction() {
1995 // Check to see if someone took the address of labels in this block.
1996 if (!P.ForwardRefBlockAddresses.empty()) {
1998 if (!F.getName().empty()) {
1999 FunctionID.Kind = ValID::t_GlobalName;
2000 FunctionID.StrVal = F.getName();
2002 FunctionID.Kind = ValID::t_GlobalID;
2003 FunctionID.UIntVal = FunctionNumber;
2006 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
2007 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
2008 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
2009 // Resolve all these references.
2010 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
2013 P.ForwardRefBlockAddresses.erase(FRBAI);
2017 if (!ForwardRefVals.empty())
2018 return P.Error(ForwardRefVals.begin()->second.second,
2019 "use of undefined value '%" + ForwardRefVals.begin()->first +
2021 if (!ForwardRefValIDs.empty())
2022 return P.Error(ForwardRefValIDs.begin()->second.second,
2023 "use of undefined value '%" +
2024 Twine(ForwardRefValIDs.begin()->first) + "'");
2029 /// GetVal - Get a value with the specified name or ID, creating a
2030 /// forward reference record if needed. This can return null if the value
2031 /// exists but does not have the right type.
2032 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2033 Type *Ty, LocTy Loc) {
2034 // Look this name up in the normal function symbol table.
2035 Value *Val = F.getValueSymbolTable().lookup(Name);
2037 // If this is a forward reference for the value, see if we already created a
2038 // forward ref record.
2040 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2041 I = ForwardRefVals.find(Name);
2042 if (I != ForwardRefVals.end())
2043 Val = I->second.first;
2046 // If we have the value in the symbol table or fwd-ref table, return it.
2048 if (Val->getType() == Ty) return Val;
2049 if (Ty->isLabelTy())
2050 P.Error(Loc, "'%" + Name + "' is not a basic block");
2052 P.Error(Loc, "'%" + Name + "' defined with type '" +
2053 getTypeString(Val->getType()) + "'");
2057 // Don't make placeholders with invalid type.
2058 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2059 P.Error(Loc, "invalid use of a non-first-class type");
2063 // Otherwise, create a new forward reference for this value and remember it.
2065 if (Ty->isLabelTy())
2066 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2068 FwdVal = new Argument(Ty, Name);
2070 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2074 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2076 // Look this name up in the normal function symbol table.
2077 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
2079 // If this is a forward reference for the value, see if we already created a
2080 // forward ref record.
2082 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2083 I = ForwardRefValIDs.find(ID);
2084 if (I != ForwardRefValIDs.end())
2085 Val = I->second.first;
2088 // If we have the value in the symbol table or fwd-ref table, return it.
2090 if (Val->getType() == Ty) return Val;
2091 if (Ty->isLabelTy())
2092 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2094 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2095 getTypeString(Val->getType()) + "'");
2099 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2100 P.Error(Loc, "invalid use of a non-first-class type");
2104 // Otherwise, create a new forward reference for this value and remember it.
2106 if (Ty->isLabelTy())
2107 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2109 FwdVal = new Argument(Ty);
2111 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2115 /// SetInstName - After an instruction is parsed and inserted into its
2116 /// basic block, this installs its name.
2117 bool LLParser::PerFunctionState::SetInstName(int NameID,
2118 const std::string &NameStr,
2119 LocTy NameLoc, Instruction *Inst) {
2120 // If this instruction has void type, it cannot have a name or ID specified.
2121 if (Inst->getType()->isVoidTy()) {
2122 if (NameID != -1 || !NameStr.empty())
2123 return P.Error(NameLoc, "instructions returning void cannot have a name");
2127 // If this was a numbered instruction, verify that the instruction is the
2128 // expected value and resolve any forward references.
2129 if (NameStr.empty()) {
2130 // If neither a name nor an ID was specified, just use the next ID.
2132 NameID = NumberedVals.size();
2134 if (unsigned(NameID) != NumberedVals.size())
2135 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2136 Twine(NumberedVals.size()) + "'");
2138 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2139 ForwardRefValIDs.find(NameID);
2140 if (FI != ForwardRefValIDs.end()) {
2141 if (FI->second.first->getType() != Inst->getType())
2142 return P.Error(NameLoc, "instruction forward referenced with type '" +
2143 getTypeString(FI->second.first->getType()) + "'");
2144 FI->second.first->replaceAllUsesWith(Inst);
2145 delete FI->second.first;
2146 ForwardRefValIDs.erase(FI);
2149 NumberedVals.push_back(Inst);
2153 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2154 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2155 FI = ForwardRefVals.find(NameStr);
2156 if (FI != ForwardRefVals.end()) {
2157 if (FI->second.first->getType() != Inst->getType())
2158 return P.Error(NameLoc, "instruction forward referenced with type '" +
2159 getTypeString(FI->second.first->getType()) + "'");
2160 FI->second.first->replaceAllUsesWith(Inst);
2161 delete FI->second.first;
2162 ForwardRefVals.erase(FI);
2165 // Set the name on the instruction.
2166 Inst->setName(NameStr);
2168 if (Inst->getName() != NameStr)
2169 return P.Error(NameLoc, "multiple definition of local value named '" +
2174 /// GetBB - Get a basic block with the specified name or ID, creating a
2175 /// forward reference record if needed.
2176 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2178 return cast_or_null<BasicBlock>(GetVal(Name,
2179 Type::getLabelTy(F.getContext()), Loc));
2182 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2183 return cast_or_null<BasicBlock>(GetVal(ID,
2184 Type::getLabelTy(F.getContext()), Loc));
2187 /// DefineBB - Define the specified basic block, which is either named or
2188 /// unnamed. If there is an error, this returns null otherwise it returns
2189 /// the block being defined.
2190 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2194 BB = GetBB(NumberedVals.size(), Loc);
2196 BB = GetBB(Name, Loc);
2197 if (BB == 0) return 0; // Already diagnosed error.
2199 // Move the block to the end of the function. Forward ref'd blocks are
2200 // inserted wherever they happen to be referenced.
2201 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2203 // Remove the block from forward ref sets.
2205 ForwardRefValIDs.erase(NumberedVals.size());
2206 NumberedVals.push_back(BB);
2208 // BB forward references are already in the function symbol table.
2209 ForwardRefVals.erase(Name);
2215 //===----------------------------------------------------------------------===//
2217 //===----------------------------------------------------------------------===//
2219 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2220 /// type implied. For example, if we parse "4" we don't know what integer type
2221 /// it has. The value will later be combined with its type and checked for
2222 /// sanity. PFS is used to convert function-local operands of metadata (since
2223 /// metadata operands are not just parsed here but also converted to values).
2224 /// PFS can be null when we are not parsing metadata values inside a function.
2225 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2226 ID.Loc = Lex.getLoc();
2227 switch (Lex.getKind()) {
2228 default: return TokError("expected value token");
2229 case lltok::GlobalID: // @42
2230 ID.UIntVal = Lex.getUIntVal();
2231 ID.Kind = ValID::t_GlobalID;
2233 case lltok::GlobalVar: // @foo
2234 ID.StrVal = Lex.getStrVal();
2235 ID.Kind = ValID::t_GlobalName;
2237 case lltok::LocalVarID: // %42
2238 ID.UIntVal = Lex.getUIntVal();
2239 ID.Kind = ValID::t_LocalID;
2241 case lltok::LocalVar: // %foo
2242 ID.StrVal = Lex.getStrVal();
2243 ID.Kind = ValID::t_LocalName;
2245 case lltok::exclaim: // !42, !{...}, or !"foo"
2246 return ParseMetadataValue(ID, PFS);
2248 ID.APSIntVal = Lex.getAPSIntVal();
2249 ID.Kind = ValID::t_APSInt;
2251 case lltok::APFloat:
2252 ID.APFloatVal = Lex.getAPFloatVal();
2253 ID.Kind = ValID::t_APFloat;
2255 case lltok::kw_true:
2256 ID.ConstantVal = ConstantInt::getTrue(Context);
2257 ID.Kind = ValID::t_Constant;
2259 case lltok::kw_false:
2260 ID.ConstantVal = ConstantInt::getFalse(Context);
2261 ID.Kind = ValID::t_Constant;
2263 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2264 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2265 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2267 case lltok::lbrace: {
2268 // ValID ::= '{' ConstVector '}'
2270 SmallVector<Constant*, 16> Elts;
2271 if (ParseGlobalValueVector(Elts) ||
2272 ParseToken(lltok::rbrace, "expected end of struct constant"))
2275 ID.ConstantStructElts = new Constant*[Elts.size()];
2276 ID.UIntVal = Elts.size();
2277 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2278 ID.Kind = ValID::t_ConstantStruct;
2282 // ValID ::= '<' ConstVector '>' --> Vector.
2283 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2285 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2287 SmallVector<Constant*, 16> Elts;
2288 LocTy FirstEltLoc = Lex.getLoc();
2289 if (ParseGlobalValueVector(Elts) ||
2291 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2292 ParseToken(lltok::greater, "expected end of constant"))
2295 if (isPackedStruct) {
2296 ID.ConstantStructElts = new Constant*[Elts.size()];
2297 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2298 ID.UIntVal = Elts.size();
2299 ID.Kind = ValID::t_PackedConstantStruct;
2304 return Error(ID.Loc, "constant vector must not be empty");
2306 if (!Elts[0]->getType()->isIntegerTy() &&
2307 !Elts[0]->getType()->isFloatingPointTy() &&
2308 !Elts[0]->getType()->isPointerTy())
2309 return Error(FirstEltLoc,
2310 "vector elements must have integer, pointer or floating point type");
2312 // Verify that all the vector elements have the same type.
2313 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2314 if (Elts[i]->getType() != Elts[0]->getType())
2315 return Error(FirstEltLoc,
2316 "vector element #" + Twine(i) +
2317 " is not of type '" + getTypeString(Elts[0]->getType()));
2319 ID.ConstantVal = ConstantVector::get(Elts);
2320 ID.Kind = ValID::t_Constant;
2323 case lltok::lsquare: { // Array Constant
2325 SmallVector<Constant*, 16> Elts;
2326 LocTy FirstEltLoc = Lex.getLoc();
2327 if (ParseGlobalValueVector(Elts) ||
2328 ParseToken(lltok::rsquare, "expected end of array constant"))
2331 // Handle empty element.
2333 // Use undef instead of an array because it's inconvenient to determine
2334 // the element type at this point, there being no elements to examine.
2335 ID.Kind = ValID::t_EmptyArray;
2339 if (!Elts[0]->getType()->isFirstClassType())
2340 return Error(FirstEltLoc, "invalid array element type: " +
2341 getTypeString(Elts[0]->getType()));
2343 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2345 // Verify all elements are correct type!
2346 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2347 if (Elts[i]->getType() != Elts[0]->getType())
2348 return Error(FirstEltLoc,
2349 "array element #" + Twine(i) +
2350 " is not of type '" + getTypeString(Elts[0]->getType()));
2353 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2354 ID.Kind = ValID::t_Constant;
2357 case lltok::kw_c: // c "foo"
2359 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2361 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2362 ID.Kind = ValID::t_Constant;
2365 case lltok::kw_asm: {
2366 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2368 bool HasSideEffect, AlignStack, AsmDialect;
2370 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2371 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2372 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2373 ParseStringConstant(ID.StrVal) ||
2374 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2375 ParseToken(lltok::StringConstant, "expected constraint string"))
2377 ID.StrVal2 = Lex.getStrVal();
2378 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2379 (unsigned(AsmDialect)<<2);
2380 ID.Kind = ValID::t_InlineAsm;
2384 case lltok::kw_blockaddress: {
2385 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2390 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2392 ParseToken(lltok::comma, "expected comma in block address expression")||
2393 ParseValID(Label) ||
2394 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2397 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2398 return Error(Fn.Loc, "expected function name in blockaddress");
2399 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2400 return Error(Label.Loc, "expected basic block name in blockaddress");
2402 // Make a global variable as a placeholder for this reference.
2403 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2404 false, GlobalValue::InternalLinkage,
2406 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2407 ID.ConstantVal = FwdRef;
2408 ID.Kind = ValID::t_Constant;
2412 case lltok::kw_trunc:
2413 case lltok::kw_zext:
2414 case lltok::kw_sext:
2415 case lltok::kw_fptrunc:
2416 case lltok::kw_fpext:
2417 case lltok::kw_bitcast:
2418 case lltok::kw_uitofp:
2419 case lltok::kw_sitofp:
2420 case lltok::kw_fptoui:
2421 case lltok::kw_fptosi:
2422 case lltok::kw_inttoptr:
2423 case lltok::kw_ptrtoint: {
2424 unsigned Opc = Lex.getUIntVal();
2428 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2429 ParseGlobalTypeAndValue(SrcVal) ||
2430 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2431 ParseType(DestTy) ||
2432 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2434 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2435 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2436 getTypeString(SrcVal->getType()) + "' to '" +
2437 getTypeString(DestTy) + "'");
2438 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2440 ID.Kind = ValID::t_Constant;
2443 case lltok::kw_extractvalue: {
2446 SmallVector<unsigned, 4> Indices;
2447 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2448 ParseGlobalTypeAndValue(Val) ||
2449 ParseIndexList(Indices) ||
2450 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2453 if (!Val->getType()->isAggregateType())
2454 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2455 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2456 return Error(ID.Loc, "invalid indices for extractvalue");
2457 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2458 ID.Kind = ValID::t_Constant;
2461 case lltok::kw_insertvalue: {
2463 Constant *Val0, *Val1;
2464 SmallVector<unsigned, 4> Indices;
2465 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2466 ParseGlobalTypeAndValue(Val0) ||
2467 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2468 ParseGlobalTypeAndValue(Val1) ||
2469 ParseIndexList(Indices) ||
2470 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2472 if (!Val0->getType()->isAggregateType())
2473 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2474 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2475 return Error(ID.Loc, "invalid indices for insertvalue");
2476 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2477 ID.Kind = ValID::t_Constant;
2480 case lltok::kw_icmp:
2481 case lltok::kw_fcmp: {
2482 unsigned PredVal, Opc = Lex.getUIntVal();
2483 Constant *Val0, *Val1;
2485 if (ParseCmpPredicate(PredVal, Opc) ||
2486 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2487 ParseGlobalTypeAndValue(Val0) ||
2488 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2489 ParseGlobalTypeAndValue(Val1) ||
2490 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2493 if (Val0->getType() != Val1->getType())
2494 return Error(ID.Loc, "compare operands must have the same type");
2496 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2498 if (Opc == Instruction::FCmp) {
2499 if (!Val0->getType()->isFPOrFPVectorTy())
2500 return Error(ID.Loc, "fcmp requires floating point operands");
2501 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2503 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2504 if (!Val0->getType()->isIntOrIntVectorTy() &&
2505 !Val0->getType()->getScalarType()->isPointerTy())
2506 return Error(ID.Loc, "icmp requires pointer or integer operands");
2507 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2509 ID.Kind = ValID::t_Constant;
2513 // Binary Operators.
2515 case lltok::kw_fadd:
2517 case lltok::kw_fsub:
2519 case lltok::kw_fmul:
2520 case lltok::kw_udiv:
2521 case lltok::kw_sdiv:
2522 case lltok::kw_fdiv:
2523 case lltok::kw_urem:
2524 case lltok::kw_srem:
2525 case lltok::kw_frem:
2527 case lltok::kw_lshr:
2528 case lltok::kw_ashr: {
2532 unsigned Opc = Lex.getUIntVal();
2533 Constant *Val0, *Val1;
2535 LocTy ModifierLoc = Lex.getLoc();
2536 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2537 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2538 if (EatIfPresent(lltok::kw_nuw))
2540 if (EatIfPresent(lltok::kw_nsw)) {
2542 if (EatIfPresent(lltok::kw_nuw))
2545 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2546 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2547 if (EatIfPresent(lltok::kw_exact))
2550 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2551 ParseGlobalTypeAndValue(Val0) ||
2552 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2553 ParseGlobalTypeAndValue(Val1) ||
2554 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2556 if (Val0->getType() != Val1->getType())
2557 return Error(ID.Loc, "operands of constexpr must have same type");
2558 if (!Val0->getType()->isIntOrIntVectorTy()) {
2560 return Error(ModifierLoc, "nuw only applies to integer operations");
2562 return Error(ModifierLoc, "nsw only applies to integer operations");
2564 // Check that the type is valid for the operator.
2566 case Instruction::Add:
2567 case Instruction::Sub:
2568 case Instruction::Mul:
2569 case Instruction::UDiv:
2570 case Instruction::SDiv:
2571 case Instruction::URem:
2572 case Instruction::SRem:
2573 case Instruction::Shl:
2574 case Instruction::AShr:
2575 case Instruction::LShr:
2576 if (!Val0->getType()->isIntOrIntVectorTy())
2577 return Error(ID.Loc, "constexpr requires integer operands");
2579 case Instruction::FAdd:
2580 case Instruction::FSub:
2581 case Instruction::FMul:
2582 case Instruction::FDiv:
2583 case Instruction::FRem:
2584 if (!Val0->getType()->isFPOrFPVectorTy())
2585 return Error(ID.Loc, "constexpr requires fp operands");
2587 default: llvm_unreachable("Unknown binary operator!");
2590 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2591 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2592 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2593 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2595 ID.Kind = ValID::t_Constant;
2599 // Logical Operations
2602 case lltok::kw_xor: {
2603 unsigned Opc = Lex.getUIntVal();
2604 Constant *Val0, *Val1;
2606 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2607 ParseGlobalTypeAndValue(Val0) ||
2608 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2609 ParseGlobalTypeAndValue(Val1) ||
2610 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2612 if (Val0->getType() != Val1->getType())
2613 return Error(ID.Loc, "operands of constexpr must have same type");
2614 if (!Val0->getType()->isIntOrIntVectorTy())
2615 return Error(ID.Loc,
2616 "constexpr requires integer or integer vector operands");
2617 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2618 ID.Kind = ValID::t_Constant;
2622 case lltok::kw_getelementptr:
2623 case lltok::kw_shufflevector:
2624 case lltok::kw_insertelement:
2625 case lltok::kw_extractelement:
2626 case lltok::kw_select: {
2627 unsigned Opc = Lex.getUIntVal();
2628 SmallVector<Constant*, 16> Elts;
2629 bool InBounds = false;
2631 if (Opc == Instruction::GetElementPtr)
2632 InBounds = EatIfPresent(lltok::kw_inbounds);
2633 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2634 ParseGlobalValueVector(Elts) ||
2635 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2638 if (Opc == Instruction::GetElementPtr) {
2639 if (Elts.size() == 0 ||
2640 !Elts[0]->getType()->getScalarType()->isPointerTy())
2641 return Error(ID.Loc, "getelementptr requires pointer operand");
2643 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2644 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2645 return Error(ID.Loc, "invalid indices for getelementptr");
2646 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2648 } else if (Opc == Instruction::Select) {
2649 if (Elts.size() != 3)
2650 return Error(ID.Loc, "expected three operands to select");
2651 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2653 return Error(ID.Loc, Reason);
2654 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2655 } else if (Opc == Instruction::ShuffleVector) {
2656 if (Elts.size() != 3)
2657 return Error(ID.Loc, "expected three operands to shufflevector");
2658 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2659 return Error(ID.Loc, "invalid operands to shufflevector");
2661 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2662 } else if (Opc == Instruction::ExtractElement) {
2663 if (Elts.size() != 2)
2664 return Error(ID.Loc, "expected two operands to extractelement");
2665 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2666 return Error(ID.Loc, "invalid extractelement operands");
2667 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2669 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2670 if (Elts.size() != 3)
2671 return Error(ID.Loc, "expected three operands to insertelement");
2672 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2673 return Error(ID.Loc, "invalid insertelement operands");
2675 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2678 ID.Kind = ValID::t_Constant;
2687 /// ParseGlobalValue - Parse a global value with the specified type.
2688 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2692 bool Parsed = ParseValID(ID) ||
2693 ConvertValIDToValue(Ty, ID, V, NULL);
2694 if (V && !(C = dyn_cast<Constant>(V)))
2695 return Error(ID.Loc, "global values must be constants");
2699 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2701 return ParseType(Ty) ||
2702 ParseGlobalValue(Ty, V);
2705 /// ParseGlobalValueVector
2707 /// ::= TypeAndValue (',' TypeAndValue)*
2708 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2710 if (Lex.getKind() == lltok::rbrace ||
2711 Lex.getKind() == lltok::rsquare ||
2712 Lex.getKind() == lltok::greater ||
2713 Lex.getKind() == lltok::rparen)
2717 if (ParseGlobalTypeAndValue(C)) return true;
2720 while (EatIfPresent(lltok::comma)) {
2721 if (ParseGlobalTypeAndValue(C)) return true;
2728 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2729 assert(Lex.getKind() == lltok::lbrace);
2732 SmallVector<Value*, 16> Elts;
2733 if (ParseMDNodeVector(Elts, PFS) ||
2734 ParseToken(lltok::rbrace, "expected end of metadata node"))
2737 ID.MDNodeVal = MDNode::get(Context, Elts);
2738 ID.Kind = ValID::t_MDNode;
2742 /// ParseMetadataValue
2746 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2747 assert(Lex.getKind() == lltok::exclaim);
2752 if (Lex.getKind() == lltok::lbrace)
2753 return ParseMetadataListValue(ID, PFS);
2755 // Standalone metadata reference
2757 if (Lex.getKind() == lltok::APSInt) {
2758 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2759 ID.Kind = ValID::t_MDNode;
2764 // ::= '!' STRINGCONSTANT
2765 if (ParseMDString(ID.MDStringVal)) return true;
2766 ID.Kind = ValID::t_MDString;
2771 //===----------------------------------------------------------------------===//
2772 // Function Parsing.
2773 //===----------------------------------------------------------------------===//
2775 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2776 PerFunctionState *PFS) {
2777 if (Ty->isFunctionTy())
2778 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2781 case ValID::t_LocalID:
2782 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2783 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2785 case ValID::t_LocalName:
2786 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2787 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2789 case ValID::t_InlineAsm: {
2790 PointerType *PTy = dyn_cast<PointerType>(Ty);
2792 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2793 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2794 return Error(ID.Loc, "invalid type for inline asm constraint string");
2795 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
2796 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
2799 case ValID::t_MDNode:
2800 if (!Ty->isMetadataTy())
2801 return Error(ID.Loc, "metadata value must have metadata type");
2804 case ValID::t_MDString:
2805 if (!Ty->isMetadataTy())
2806 return Error(ID.Loc, "metadata value must have metadata type");
2809 case ValID::t_GlobalName:
2810 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2812 case ValID::t_GlobalID:
2813 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2815 case ValID::t_APSInt:
2816 if (!Ty->isIntegerTy())
2817 return Error(ID.Loc, "integer constant must have integer type");
2818 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2819 V = ConstantInt::get(Context, ID.APSIntVal);
2821 case ValID::t_APFloat:
2822 if (!Ty->isFloatingPointTy() ||
2823 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2824 return Error(ID.Loc, "floating point constant invalid for type");
2826 // The lexer has no type info, so builds all half, float, and double FP
2827 // constants as double. Fix this here. Long double does not need this.
2828 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
2831 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
2833 else if (Ty->isFloatTy())
2834 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2837 V = ConstantFP::get(Context, ID.APFloatVal);
2839 if (V->getType() != Ty)
2840 return Error(ID.Loc, "floating point constant does not have type '" +
2841 getTypeString(Ty) + "'");
2845 if (!Ty->isPointerTy())
2846 return Error(ID.Loc, "null must be a pointer type");
2847 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2849 case ValID::t_Undef:
2850 // FIXME: LabelTy should not be a first-class type.
2851 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2852 return Error(ID.Loc, "invalid type for undef constant");
2853 V = UndefValue::get(Ty);
2855 case ValID::t_EmptyArray:
2856 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2857 return Error(ID.Loc, "invalid empty array initializer");
2858 V = UndefValue::get(Ty);
2861 // FIXME: LabelTy should not be a first-class type.
2862 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2863 return Error(ID.Loc, "invalid type for null constant");
2864 V = Constant::getNullValue(Ty);
2866 case ValID::t_Constant:
2867 if (ID.ConstantVal->getType() != Ty)
2868 return Error(ID.Loc, "constant expression type mismatch");
2872 case ValID::t_ConstantStruct:
2873 case ValID::t_PackedConstantStruct:
2874 if (StructType *ST = dyn_cast<StructType>(Ty)) {
2875 if (ST->getNumElements() != ID.UIntVal)
2876 return Error(ID.Loc,
2877 "initializer with struct type has wrong # elements");
2878 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
2879 return Error(ID.Loc, "packed'ness of initializer and type don't match");
2881 // Verify that the elements are compatible with the structtype.
2882 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
2883 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
2884 return Error(ID.Loc, "element " + Twine(i) +
2885 " of struct initializer doesn't match struct element type");
2887 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
2890 return Error(ID.Loc, "constant expression type mismatch");
2893 llvm_unreachable("Invalid ValID");
2896 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
2899 return ParseValID(ID, PFS) ||
2900 ConvertValIDToValue(Ty, ID, V, PFS);
2903 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
2905 return ParseType(Ty) ||
2906 ParseValue(Ty, V, PFS);
2909 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2910 PerFunctionState &PFS) {
2913 if (ParseTypeAndValue(V, PFS)) return true;
2914 if (!isa<BasicBlock>(V))
2915 return Error(Loc, "expected a basic block");
2916 BB = cast<BasicBlock>(V);
2922 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2923 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2924 /// OptionalAlign OptGC OptionalPrefix
2925 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2926 // Parse the linkage.
2927 LocTy LinkageLoc = Lex.getLoc();
2930 unsigned Visibility;
2931 AttrBuilder RetAttrs;
2934 LocTy RetTypeLoc = Lex.getLoc();
2935 if (ParseOptionalLinkage(Linkage) ||
2936 ParseOptionalVisibility(Visibility) ||
2937 ParseOptionalCallingConv(CC) ||
2938 ParseOptionalReturnAttrs(RetAttrs) ||
2939 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2942 // Verify that the linkage is ok.
2943 switch ((GlobalValue::LinkageTypes)Linkage) {
2944 case GlobalValue::ExternalLinkage:
2945 break; // always ok.
2946 case GlobalValue::DLLImportLinkage:
2947 case GlobalValue::ExternalWeakLinkage:
2949 return Error(LinkageLoc, "invalid linkage for function definition");
2951 case GlobalValue::PrivateLinkage:
2952 case GlobalValue::LinkerPrivateLinkage:
2953 case GlobalValue::LinkerPrivateWeakLinkage:
2954 case GlobalValue::InternalLinkage:
2955 case GlobalValue::AvailableExternallyLinkage:
2956 case GlobalValue::LinkOnceAnyLinkage:
2957 case GlobalValue::LinkOnceODRLinkage:
2958 case GlobalValue::WeakAnyLinkage:
2959 case GlobalValue::WeakODRLinkage:
2960 case GlobalValue::DLLExportLinkage:
2962 return Error(LinkageLoc, "invalid linkage for function declaration");
2964 case GlobalValue::AppendingLinkage:
2965 case GlobalValue::CommonLinkage:
2966 return Error(LinkageLoc, "invalid function linkage type");
2969 if (!FunctionType::isValidReturnType(RetType))
2970 return Error(RetTypeLoc, "invalid function return type");
2972 LocTy NameLoc = Lex.getLoc();
2974 std::string FunctionName;
2975 if (Lex.getKind() == lltok::GlobalVar) {
2976 FunctionName = Lex.getStrVal();
2977 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2978 unsigned NameID = Lex.getUIntVal();
2980 if (NameID != NumberedVals.size())
2981 return TokError("function expected to be numbered '%" +
2982 Twine(NumberedVals.size()) + "'");
2984 return TokError("expected function name");
2989 if (Lex.getKind() != lltok::lparen)
2990 return TokError("expected '(' in function argument list");
2992 SmallVector<ArgInfo, 8> ArgList;
2994 AttrBuilder FuncAttrs;
2995 std::vector<unsigned> FwdRefAttrGrps;
2997 std::string Section;
3001 LocTy UnnamedAddrLoc;
3002 Constant *Prefix = 0;
3004 if (ParseArgumentList(ArgList, isVarArg) ||
3005 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
3007 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
3009 (EatIfPresent(lltok::kw_section) &&
3010 ParseStringConstant(Section)) ||
3011 ParseOptionalAlignment(Alignment) ||
3012 (EatIfPresent(lltok::kw_gc) &&
3013 ParseStringConstant(GC)) ||
3014 (EatIfPresent(lltok::kw_prefix) &&
3015 ParseGlobalTypeAndValue(Prefix)))
3018 if (FuncAttrs.contains(Attribute::Builtin))
3019 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
3021 // If the alignment was parsed as an attribute, move to the alignment field.
3022 if (FuncAttrs.hasAlignmentAttr()) {
3023 Alignment = FuncAttrs.getAlignment();
3024 FuncAttrs.removeAttribute(Attribute::Alignment);
3027 // Okay, if we got here, the function is syntactically valid. Convert types
3028 // and do semantic checks.
3029 std::vector<Type*> ParamTypeList;
3030 SmallVector<AttributeSet, 8> Attrs;
3032 if (RetAttrs.hasAttributes())
3033 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3034 AttributeSet::ReturnIndex,
3037 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3038 ParamTypeList.push_back(ArgList[i].Ty);
3039 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3040 AttrBuilder B(ArgList[i].Attrs, i + 1);
3041 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3045 if (FuncAttrs.hasAttributes())
3046 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3047 AttributeSet::FunctionIndex,
3050 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3052 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
3053 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
3056 FunctionType::get(RetType, ParamTypeList, isVarArg);
3057 PointerType *PFT = PointerType::getUnqual(FT);
3060 if (!FunctionName.empty()) {
3061 // If this was a definition of a forward reference, remove the definition
3062 // from the forward reference table and fill in the forward ref.
3063 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
3064 ForwardRefVals.find(FunctionName);
3065 if (FRVI != ForwardRefVals.end()) {
3066 Fn = M->getFunction(FunctionName);
3068 return Error(FRVI->second.second, "invalid forward reference to "
3069 "function as global value!");
3070 if (Fn->getType() != PFT)
3071 return Error(FRVI->second.second, "invalid forward reference to "
3072 "function '" + FunctionName + "' with wrong type!");
3074 ForwardRefVals.erase(FRVI);
3075 } else if ((Fn = M->getFunction(FunctionName))) {
3076 // Reject redefinitions.
3077 return Error(NameLoc, "invalid redefinition of function '" +
3078 FunctionName + "'");
3079 } else if (M->getNamedValue(FunctionName)) {
3080 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
3084 // If this is a definition of a forward referenced function, make sure the
3086 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
3087 = ForwardRefValIDs.find(NumberedVals.size());
3088 if (I != ForwardRefValIDs.end()) {
3089 Fn = cast<Function>(I->second.first);
3090 if (Fn->getType() != PFT)
3091 return Error(NameLoc, "type of definition and forward reference of '@" +
3092 Twine(NumberedVals.size()) + "' disagree");
3093 ForwardRefValIDs.erase(I);
3098 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
3099 else // Move the forward-reference to the correct spot in the module.
3100 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
3102 if (FunctionName.empty())
3103 NumberedVals.push_back(Fn);
3105 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
3106 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
3107 Fn->setCallingConv(CC);
3108 Fn->setAttributes(PAL);
3109 Fn->setUnnamedAddr(UnnamedAddr);
3110 Fn->setAlignment(Alignment);
3111 Fn->setSection(Section);
3112 if (!GC.empty()) Fn->setGC(GC.c_str());
3113 Fn->setPrefixData(Prefix);
3114 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
3116 // Add all of the arguments we parsed to the function.
3117 Function::arg_iterator ArgIt = Fn->arg_begin();
3118 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
3119 // If the argument has a name, insert it into the argument symbol table.
3120 if (ArgList[i].Name.empty()) continue;
3122 // Set the name, if it conflicted, it will be auto-renamed.
3123 ArgIt->setName(ArgList[i].Name);
3125 if (ArgIt->getName() != ArgList[i].Name)
3126 return Error(ArgList[i].Loc, "redefinition of argument '%" +
3127 ArgList[i].Name + "'");
3134 /// ParseFunctionBody
3135 /// ::= '{' BasicBlock+ '}'
3137 bool LLParser::ParseFunctionBody(Function &Fn) {
3138 if (Lex.getKind() != lltok::lbrace)
3139 return TokError("expected '{' in function body");
3140 Lex.Lex(); // eat the {.
3142 int FunctionNumber = -1;
3143 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
3145 PerFunctionState PFS(*this, Fn, FunctionNumber);
3147 // We need at least one basic block.
3148 if (Lex.getKind() == lltok::rbrace)
3149 return TokError("function body requires at least one basic block");
3151 while (Lex.getKind() != lltok::rbrace)
3152 if (ParseBasicBlock(PFS)) return true;
3157 // Verify function is ok.
3158 return PFS.FinishFunction();
3162 /// ::= LabelStr? Instruction*
3163 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
3164 // If this basic block starts out with a name, remember it.
3166 LocTy NameLoc = Lex.getLoc();
3167 if (Lex.getKind() == lltok::LabelStr) {
3168 Name = Lex.getStrVal();
3172 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
3173 if (BB == 0) return true;
3175 std::string NameStr;
3177 // Parse the instructions in this block until we get a terminator.
3180 // This instruction may have three possibilities for a name: a) none
3181 // specified, b) name specified "%foo =", c) number specified: "%4 =".
3182 LocTy NameLoc = Lex.getLoc();
3186 if (Lex.getKind() == lltok::LocalVarID) {
3187 NameID = Lex.getUIntVal();
3189 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
3191 } else if (Lex.getKind() == lltok::LocalVar) {
3192 NameStr = Lex.getStrVal();
3194 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
3198 switch (ParseInstruction(Inst, BB, PFS)) {
3199 default: llvm_unreachable("Unknown ParseInstruction result!");
3200 case InstError: return true;
3202 BB->getInstList().push_back(Inst);
3204 // With a normal result, we check to see if the instruction is followed by
3205 // a comma and metadata.
3206 if (EatIfPresent(lltok::comma))
3207 if (ParseInstructionMetadata(Inst, &PFS))
3210 case InstExtraComma:
3211 BB->getInstList().push_back(Inst);
3213 // If the instruction parser ate an extra comma at the end of it, it
3214 // *must* be followed by metadata.
3215 if (ParseInstructionMetadata(Inst, &PFS))
3220 // Set the name on the instruction.
3221 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3222 } while (!isa<TerminatorInst>(Inst));
3227 //===----------------------------------------------------------------------===//
3228 // Instruction Parsing.
3229 //===----------------------------------------------------------------------===//
3231 /// ParseInstruction - Parse one of the many different instructions.
3233 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3234 PerFunctionState &PFS) {
3235 lltok::Kind Token = Lex.getKind();
3236 if (Token == lltok::Eof)
3237 return TokError("found end of file when expecting more instructions");
3238 LocTy Loc = Lex.getLoc();
3239 unsigned KeywordVal = Lex.getUIntVal();
3240 Lex.Lex(); // Eat the keyword.
3243 default: return Error(Loc, "expected instruction opcode");
3244 // Terminator Instructions.
3245 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3246 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3247 case lltok::kw_br: return ParseBr(Inst, PFS);
3248 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3249 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3250 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3251 case lltok::kw_resume: return ParseResume(Inst, PFS);
3252 // Binary Operators.
3256 case lltok::kw_shl: {
3257 bool NUW = EatIfPresent(lltok::kw_nuw);
3258 bool NSW = EatIfPresent(lltok::kw_nsw);
3259 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3261 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3263 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3264 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3267 case lltok::kw_fadd:
3268 case lltok::kw_fsub:
3269 case lltok::kw_fmul:
3270 case lltok::kw_fdiv:
3271 case lltok::kw_frem: {
3272 FastMathFlags FMF = EatFastMathFlagsIfPresent();
3273 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
3277 Inst->setFastMathFlags(FMF);
3281 case lltok::kw_sdiv:
3282 case lltok::kw_udiv:
3283 case lltok::kw_lshr:
3284 case lltok::kw_ashr: {
3285 bool Exact = EatIfPresent(lltok::kw_exact);
3287 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3288 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3292 case lltok::kw_urem:
3293 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3296 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3297 case lltok::kw_icmp:
3298 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3300 case lltok::kw_trunc:
3301 case lltok::kw_zext:
3302 case lltok::kw_sext:
3303 case lltok::kw_fptrunc:
3304 case lltok::kw_fpext:
3305 case lltok::kw_bitcast:
3306 case lltok::kw_uitofp:
3307 case lltok::kw_sitofp:
3308 case lltok::kw_fptoui:
3309 case lltok::kw_fptosi:
3310 case lltok::kw_inttoptr:
3311 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3313 case lltok::kw_select: return ParseSelect(Inst, PFS);
3314 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3315 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3316 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3317 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3318 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3319 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3320 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3321 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3323 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3324 case lltok::kw_load: return ParseLoad(Inst, PFS);
3325 case lltok::kw_store: return ParseStore(Inst, PFS);
3326 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3327 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3328 case lltok::kw_fence: return ParseFence(Inst, PFS);
3329 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3330 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3331 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3335 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3336 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3337 if (Opc == Instruction::FCmp) {
3338 switch (Lex.getKind()) {
3339 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
3340 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3341 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3342 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3343 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3344 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3345 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3346 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3347 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3348 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3349 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3350 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3351 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3352 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3353 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3354 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3355 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3358 switch (Lex.getKind()) {
3359 default: return TokError("expected icmp predicate (e.g. 'eq')");
3360 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3361 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3362 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3363 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3364 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3365 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3366 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3367 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3368 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3369 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3376 //===----------------------------------------------------------------------===//
3377 // Terminator Instructions.
3378 //===----------------------------------------------------------------------===//
3380 /// ParseRet - Parse a return instruction.
3381 /// ::= 'ret' void (',' !dbg, !1)*
3382 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3383 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3384 PerFunctionState &PFS) {
3385 SMLoc TypeLoc = Lex.getLoc();
3387 if (ParseType(Ty, true /*void allowed*/)) return true;
3389 Type *ResType = PFS.getFunction().getReturnType();
3391 if (Ty->isVoidTy()) {
3392 if (!ResType->isVoidTy())
3393 return Error(TypeLoc, "value doesn't match function result type '" +
3394 getTypeString(ResType) + "'");
3396 Inst = ReturnInst::Create(Context);
3401 if (ParseValue(Ty, RV, PFS)) return true;
3403 if (ResType != RV->getType())
3404 return Error(TypeLoc, "value doesn't match function result type '" +
3405 getTypeString(ResType) + "'");
3407 Inst = ReturnInst::Create(Context, RV);
3413 /// ::= 'br' TypeAndValue
3414 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3415 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3418 BasicBlock *Op1, *Op2;
3419 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3421 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3422 Inst = BranchInst::Create(BB);
3426 if (Op0->getType() != Type::getInt1Ty(Context))
3427 return Error(Loc, "branch condition must have 'i1' type");
3429 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3430 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3431 ParseToken(lltok::comma, "expected ',' after true destination") ||
3432 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3435 Inst = BranchInst::Create(Op1, Op2, Op0);
3441 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3443 /// ::= (TypeAndValue ',' TypeAndValue)*
3444 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3445 LocTy CondLoc, BBLoc;
3447 BasicBlock *DefaultBB;
3448 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3449 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3450 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3451 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3454 if (!Cond->getType()->isIntegerTy())
3455 return Error(CondLoc, "switch condition must have integer type");
3457 // Parse the jump table pairs.
3458 SmallPtrSet<Value*, 32> SeenCases;
3459 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3460 while (Lex.getKind() != lltok::rsquare) {
3464 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3465 ParseToken(lltok::comma, "expected ',' after case value") ||
3466 ParseTypeAndBasicBlock(DestBB, PFS))
3469 if (!SeenCases.insert(Constant))
3470 return Error(CondLoc, "duplicate case value in switch");
3471 if (!isa<ConstantInt>(Constant))
3472 return Error(CondLoc, "case value is not a constant integer");
3474 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3477 Lex.Lex(); // Eat the ']'.
3479 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3480 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3481 SI->addCase(Table[i].first, Table[i].second);
3488 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3489 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3492 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3493 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3494 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3497 if (!Address->getType()->isPointerTy())
3498 return Error(AddrLoc, "indirectbr address must have pointer type");
3500 // Parse the destination list.
3501 SmallVector<BasicBlock*, 16> DestList;
3503 if (Lex.getKind() != lltok::rsquare) {
3505 if (ParseTypeAndBasicBlock(DestBB, PFS))
3507 DestList.push_back(DestBB);
3509 while (EatIfPresent(lltok::comma)) {
3510 if (ParseTypeAndBasicBlock(DestBB, PFS))
3512 DestList.push_back(DestBB);
3516 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3519 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3520 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3521 IBI->addDestination(DestList[i]);
3528 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3529 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3530 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3531 LocTy CallLoc = Lex.getLoc();
3532 AttrBuilder RetAttrs, FnAttrs;
3533 std::vector<unsigned> FwdRefAttrGrps;
3539 SmallVector<ParamInfo, 16> ArgList;
3541 BasicBlock *NormalBB, *UnwindBB;
3542 if (ParseOptionalCallingConv(CC) ||
3543 ParseOptionalReturnAttrs(RetAttrs) ||
3544 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3545 ParseValID(CalleeID) ||
3546 ParseParameterList(ArgList, PFS) ||
3547 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3549 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3550 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3551 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3552 ParseTypeAndBasicBlock(UnwindBB, PFS))
3555 // If RetType is a non-function pointer type, then this is the short syntax
3556 // for the call, which means that RetType is just the return type. Infer the
3557 // rest of the function argument types from the arguments that are present.
3558 PointerType *PFTy = 0;
3559 FunctionType *Ty = 0;
3560 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3561 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3562 // Pull out the types of all of the arguments...
3563 std::vector<Type*> ParamTypes;
3564 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3565 ParamTypes.push_back(ArgList[i].V->getType());
3567 if (!FunctionType::isValidReturnType(RetType))
3568 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3570 Ty = FunctionType::get(RetType, ParamTypes, false);
3571 PFTy = PointerType::getUnqual(Ty);
3574 // Look up the callee.
3576 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3578 // Set up the Attribute for the function.
3579 SmallVector<AttributeSet, 8> Attrs;
3580 if (RetAttrs.hasAttributes())
3581 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3582 AttributeSet::ReturnIndex,
3585 SmallVector<Value*, 8> Args;
3587 // Loop through FunctionType's arguments and ensure they are specified
3588 // correctly. Also, gather any parameter attributes.
3589 FunctionType::param_iterator I = Ty->param_begin();
3590 FunctionType::param_iterator E = Ty->param_end();
3591 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3592 Type *ExpectedTy = 0;
3595 } else if (!Ty->isVarArg()) {
3596 return Error(ArgList[i].Loc, "too many arguments specified");
3599 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3600 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3601 getTypeString(ExpectedTy) + "'");
3602 Args.push_back(ArgList[i].V);
3603 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3604 AttrBuilder B(ArgList[i].Attrs, i + 1);
3605 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3610 return Error(CallLoc, "not enough parameters specified for call");
3612 if (FnAttrs.hasAttributes())
3613 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3614 AttributeSet::FunctionIndex,
3617 // Finish off the Attribute and check them
3618 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3620 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3621 II->setCallingConv(CC);
3622 II->setAttributes(PAL);
3623 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
3629 /// ::= 'resume' TypeAndValue
3630 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3631 Value *Exn; LocTy ExnLoc;
3632 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3635 ResumeInst *RI = ResumeInst::Create(Exn);
3640 //===----------------------------------------------------------------------===//
3641 // Binary Operators.
3642 //===----------------------------------------------------------------------===//
3645 /// ::= ArithmeticOps TypeAndValue ',' Value
3647 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3648 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3649 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3650 unsigned Opc, unsigned OperandType) {
3651 LocTy Loc; Value *LHS, *RHS;
3652 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3653 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3654 ParseValue(LHS->getType(), RHS, PFS))
3658 switch (OperandType) {
3659 default: llvm_unreachable("Unknown operand type!");
3660 case 0: // int or FP.
3661 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3662 LHS->getType()->isFPOrFPVectorTy();
3664 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3665 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3669 return Error(Loc, "invalid operand type for instruction");
3671 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3676 /// ::= ArithmeticOps TypeAndValue ',' Value {
3677 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3679 LocTy Loc; Value *LHS, *RHS;
3680 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3681 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3682 ParseValue(LHS->getType(), RHS, PFS))
3685 if (!LHS->getType()->isIntOrIntVectorTy())
3686 return Error(Loc,"instruction requires integer or integer vector operands");
3688 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3694 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3695 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3696 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3698 // Parse the integer/fp comparison predicate.
3702 if (ParseCmpPredicate(Pred, Opc) ||
3703 ParseTypeAndValue(LHS, Loc, PFS) ||
3704 ParseToken(lltok::comma, "expected ',' after compare value") ||
3705 ParseValue(LHS->getType(), RHS, PFS))
3708 if (Opc == Instruction::FCmp) {
3709 if (!LHS->getType()->isFPOrFPVectorTy())
3710 return Error(Loc, "fcmp requires floating point operands");
3711 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3713 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3714 if (!LHS->getType()->isIntOrIntVectorTy() &&
3715 !LHS->getType()->getScalarType()->isPointerTy())
3716 return Error(Loc, "icmp requires integer operands");
3717 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3722 //===----------------------------------------------------------------------===//
3723 // Other Instructions.
3724 //===----------------------------------------------------------------------===//
3728 /// ::= CastOpc TypeAndValue 'to' Type
3729 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3734 if (ParseTypeAndValue(Op, Loc, PFS) ||
3735 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3739 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3740 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3741 return Error(Loc, "invalid cast opcode for cast from '" +
3742 getTypeString(Op->getType()) + "' to '" +
3743 getTypeString(DestTy) + "'");
3745 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3750 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3751 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3753 Value *Op0, *Op1, *Op2;
3754 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3755 ParseToken(lltok::comma, "expected ',' after select condition") ||
3756 ParseTypeAndValue(Op1, PFS) ||
3757 ParseToken(lltok::comma, "expected ',' after select value") ||
3758 ParseTypeAndValue(Op2, PFS))
3761 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3762 return Error(Loc, Reason);
3764 Inst = SelectInst::Create(Op0, Op1, Op2);
3769 /// ::= 'va_arg' TypeAndValue ',' Type
3770 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3774 if (ParseTypeAndValue(Op, PFS) ||
3775 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3776 ParseType(EltTy, TypeLoc))
3779 if (!EltTy->isFirstClassType())
3780 return Error(TypeLoc, "va_arg requires operand with first class type");
3782 Inst = new VAArgInst(Op, EltTy);
3786 /// ParseExtractElement
3787 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3788 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3791 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3792 ParseToken(lltok::comma, "expected ',' after extract value") ||
3793 ParseTypeAndValue(Op1, PFS))
3796 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3797 return Error(Loc, "invalid extractelement operands");
3799 Inst = ExtractElementInst::Create(Op0, Op1);
3803 /// ParseInsertElement
3804 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3805 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3807 Value *Op0, *Op1, *Op2;
3808 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3809 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3810 ParseTypeAndValue(Op1, PFS) ||
3811 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3812 ParseTypeAndValue(Op2, PFS))
3815 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3816 return Error(Loc, "invalid insertelement operands");
3818 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3822 /// ParseShuffleVector
3823 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3824 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3826 Value *Op0, *Op1, *Op2;
3827 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3828 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3829 ParseTypeAndValue(Op1, PFS) ||
3830 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3831 ParseTypeAndValue(Op2, PFS))
3834 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3835 return Error(Loc, "invalid shufflevector operands");
3837 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3842 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3843 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3844 Type *Ty = 0; LocTy TypeLoc;
3847 if (ParseType(Ty, TypeLoc) ||
3848 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3849 ParseValue(Ty, Op0, PFS) ||
3850 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3851 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3852 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3855 bool AteExtraComma = false;
3856 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3858 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3860 if (!EatIfPresent(lltok::comma))
3863 if (Lex.getKind() == lltok::MetadataVar) {
3864 AteExtraComma = true;
3868 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3869 ParseValue(Ty, Op0, PFS) ||
3870 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3871 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3872 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3876 if (!Ty->isFirstClassType())
3877 return Error(TypeLoc, "phi node must have first class type");
3879 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
3880 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3881 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3883 return AteExtraComma ? InstExtraComma : InstNormal;
3887 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
3889 /// ::= 'catch' TypeAndValue
3891 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
3892 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
3893 Type *Ty = 0; LocTy TyLoc;
3894 Value *PersFn; LocTy PersFnLoc;
3896 if (ParseType(Ty, TyLoc) ||
3897 ParseToken(lltok::kw_personality, "expected 'personality'") ||
3898 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
3901 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
3902 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
3904 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
3905 LandingPadInst::ClauseType CT;
3906 if (EatIfPresent(lltok::kw_catch))
3907 CT = LandingPadInst::Catch;
3908 else if (EatIfPresent(lltok::kw_filter))
3909 CT = LandingPadInst::Filter;
3911 return TokError("expected 'catch' or 'filter' clause type");
3913 Value *V; LocTy VLoc;
3914 if (ParseTypeAndValue(V, VLoc, PFS)) {
3919 // A 'catch' type expects a non-array constant. A filter clause expects an
3921 if (CT == LandingPadInst::Catch) {
3922 if (isa<ArrayType>(V->getType()))
3923 Error(VLoc, "'catch' clause has an invalid type");
3925 if (!isa<ArrayType>(V->getType()))
3926 Error(VLoc, "'filter' clause has an invalid type");
3937 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3938 /// ParameterList OptionalAttrs
3939 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3941 AttrBuilder RetAttrs, FnAttrs;
3942 std::vector<unsigned> FwdRefAttrGrps;
3948 SmallVector<ParamInfo, 16> ArgList;
3949 LocTy CallLoc = Lex.getLoc();
3951 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3952 ParseOptionalCallingConv(CC) ||
3953 ParseOptionalReturnAttrs(RetAttrs) ||
3954 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3955 ParseValID(CalleeID) ||
3956 ParseParameterList(ArgList, PFS) ||
3957 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3961 // If RetType is a non-function pointer type, then this is the short syntax
3962 // for the call, which means that RetType is just the return type. Infer the
3963 // rest of the function argument types from the arguments that are present.
3964 PointerType *PFTy = 0;
3965 FunctionType *Ty = 0;
3966 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3967 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3968 // Pull out the types of all of the arguments...
3969 std::vector<Type*> ParamTypes;
3970 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3971 ParamTypes.push_back(ArgList[i].V->getType());
3973 if (!FunctionType::isValidReturnType(RetType))
3974 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3976 Ty = FunctionType::get(RetType, ParamTypes, false);
3977 PFTy = PointerType::getUnqual(Ty);
3980 // Look up the callee.
3982 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3984 // Set up the Attribute for the function.
3985 SmallVector<AttributeSet, 8> Attrs;
3986 if (RetAttrs.hasAttributes())
3987 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3988 AttributeSet::ReturnIndex,
3991 SmallVector<Value*, 8> Args;
3993 // Loop through FunctionType's arguments and ensure they are specified
3994 // correctly. Also, gather any parameter attributes.
3995 FunctionType::param_iterator I = Ty->param_begin();
3996 FunctionType::param_iterator E = Ty->param_end();
3997 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3998 Type *ExpectedTy = 0;
4001 } else if (!Ty->isVarArg()) {
4002 return Error(ArgList[i].Loc, "too many arguments specified");
4005 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
4006 return Error(ArgList[i].Loc, "argument is not of expected type '" +
4007 getTypeString(ExpectedTy) + "'");
4008 Args.push_back(ArgList[i].V);
4009 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4010 AttrBuilder B(ArgList[i].Attrs, i + 1);
4011 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4016 return Error(CallLoc, "not enough parameters specified for call");
4018 if (FnAttrs.hasAttributes())
4019 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4020 AttributeSet::FunctionIndex,
4023 // Finish off the Attribute and check them
4024 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4026 CallInst *CI = CallInst::Create(Callee, Args);
4027 CI->setTailCall(isTail);
4028 CI->setCallingConv(CC);
4029 CI->setAttributes(PAL);
4030 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
4035 //===----------------------------------------------------------------------===//
4036 // Memory Instructions.
4037 //===----------------------------------------------------------------------===//
4040 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
4041 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
4044 unsigned Alignment = 0;
4046 if (ParseType(Ty)) return true;
4048 bool AteExtraComma = false;
4049 if (EatIfPresent(lltok::comma)) {
4050 if (Lex.getKind() == lltok::kw_align) {
4051 if (ParseOptionalAlignment(Alignment)) return true;
4052 } else if (Lex.getKind() == lltok::MetadataVar) {
4053 AteExtraComma = true;
4055 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
4056 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4061 if (Size && !Size->getType()->isIntegerTy())
4062 return Error(SizeLoc, "element count must have integer type");
4064 Inst = new AllocaInst(Ty, Size, Alignment);
4065 return AteExtraComma ? InstExtraComma : InstNormal;
4069 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
4070 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
4071 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4072 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
4073 Value *Val; LocTy Loc;
4074 unsigned Alignment = 0;
4075 bool AteExtraComma = false;
4076 bool isAtomic = false;
4077 AtomicOrdering Ordering = NotAtomic;
4078 SynchronizationScope Scope = CrossThread;
4080 if (Lex.getKind() == lltok::kw_atomic) {
4085 bool isVolatile = false;
4086 if (Lex.getKind() == lltok::kw_volatile) {
4091 if (ParseTypeAndValue(Val, Loc, PFS) ||
4092 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4093 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4096 if (!Val->getType()->isPointerTy() ||
4097 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
4098 return Error(Loc, "load operand must be a pointer to a first class type");
4099 if (isAtomic && !Alignment)
4100 return Error(Loc, "atomic load must have explicit non-zero alignment");
4101 if (Ordering == Release || Ordering == AcquireRelease)
4102 return Error(Loc, "atomic load cannot use Release ordering");
4104 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
4105 return AteExtraComma ? InstExtraComma : InstNormal;
4110 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
4111 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
4112 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4113 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
4114 Value *Val, *Ptr; LocTy Loc, PtrLoc;
4115 unsigned Alignment = 0;
4116 bool AteExtraComma = false;
4117 bool isAtomic = false;
4118 AtomicOrdering Ordering = NotAtomic;
4119 SynchronizationScope Scope = CrossThread;
4121 if (Lex.getKind() == lltok::kw_atomic) {
4126 bool isVolatile = false;
4127 if (Lex.getKind() == lltok::kw_volatile) {
4132 if (ParseTypeAndValue(Val, Loc, PFS) ||
4133 ParseToken(lltok::comma, "expected ',' after store operand") ||
4134 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4135 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4136 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4139 if (!Ptr->getType()->isPointerTy())
4140 return Error(PtrLoc, "store operand must be a pointer");
4141 if (!Val->getType()->isFirstClassType())
4142 return Error(Loc, "store operand must be a first class value");
4143 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4144 return Error(Loc, "stored value and pointer type do not match");
4145 if (isAtomic && !Alignment)
4146 return Error(Loc, "atomic store must have explicit non-zero alignment");
4147 if (Ordering == Acquire || Ordering == AcquireRelease)
4148 return Error(Loc, "atomic store cannot use Acquire ordering");
4150 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
4151 return AteExtraComma ? InstExtraComma : InstNormal;
4155 /// ::= 'cmpxchg' 'volatile'? TypeAndValue ',' TypeAndValue ',' TypeAndValue
4156 /// 'singlethread'? AtomicOrdering
4157 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
4158 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
4159 bool AteExtraComma = false;
4160 AtomicOrdering Ordering = NotAtomic;
4161 SynchronizationScope Scope = CrossThread;
4162 bool isVolatile = false;
4164 if (EatIfPresent(lltok::kw_volatile))
4167 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4168 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
4169 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
4170 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
4171 ParseTypeAndValue(New, NewLoc, PFS) ||
4172 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4175 if (Ordering == Unordered)
4176 return TokError("cmpxchg cannot be unordered");
4177 if (!Ptr->getType()->isPointerTy())
4178 return Error(PtrLoc, "cmpxchg operand must be a pointer");
4179 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
4180 return Error(CmpLoc, "compare value and pointer type do not match");
4181 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
4182 return Error(NewLoc, "new value and pointer type do not match");
4183 if (!New->getType()->isIntegerTy())
4184 return Error(NewLoc, "cmpxchg operand must be an integer");
4185 unsigned Size = New->getType()->getPrimitiveSizeInBits();
4186 if (Size < 8 || (Size & (Size - 1)))
4187 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
4190 AtomicCmpXchgInst *CXI =
4191 new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, Scope);
4192 CXI->setVolatile(isVolatile);
4194 return AteExtraComma ? InstExtraComma : InstNormal;
4198 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
4199 /// 'singlethread'? AtomicOrdering
4200 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
4201 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
4202 bool AteExtraComma = false;
4203 AtomicOrdering Ordering = NotAtomic;
4204 SynchronizationScope Scope = CrossThread;
4205 bool isVolatile = false;
4206 AtomicRMWInst::BinOp Operation;
4208 if (EatIfPresent(lltok::kw_volatile))
4211 switch (Lex.getKind()) {
4212 default: return TokError("expected binary operation in atomicrmw");
4213 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
4214 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
4215 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
4216 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
4217 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
4218 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
4219 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
4220 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
4221 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
4222 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
4223 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
4225 Lex.Lex(); // Eat the operation.
4227 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4228 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
4229 ParseTypeAndValue(Val, ValLoc, PFS) ||
4230 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4233 if (Ordering == Unordered)
4234 return TokError("atomicrmw cannot be unordered");
4235 if (!Ptr->getType()->isPointerTy())
4236 return Error(PtrLoc, "atomicrmw operand must be a pointer");
4237 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4238 return Error(ValLoc, "atomicrmw value and pointer type do not match");
4239 if (!Val->getType()->isIntegerTy())
4240 return Error(ValLoc, "atomicrmw operand must be an integer");
4241 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
4242 if (Size < 8 || (Size & (Size - 1)))
4243 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
4246 AtomicRMWInst *RMWI =
4247 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
4248 RMWI->setVolatile(isVolatile);
4250 return AteExtraComma ? InstExtraComma : InstNormal;
4254 /// ::= 'fence' 'singlethread'? AtomicOrdering
4255 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
4256 AtomicOrdering Ordering = NotAtomic;
4257 SynchronizationScope Scope = CrossThread;
4258 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4261 if (Ordering == Unordered)
4262 return TokError("fence cannot be unordered");
4263 if (Ordering == Monotonic)
4264 return TokError("fence cannot be monotonic");
4266 Inst = new FenceInst(Context, Ordering, Scope);
4270 /// ParseGetElementPtr
4271 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
4272 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
4277 bool InBounds = EatIfPresent(lltok::kw_inbounds);
4279 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4281 Type *BaseType = Ptr->getType();
4282 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
4283 if (!BasePointerType)
4284 return Error(Loc, "base of getelementptr must be a pointer");
4286 SmallVector<Value*, 16> Indices;
4287 bool AteExtraComma = false;
4288 while (EatIfPresent(lltok::comma)) {
4289 if (Lex.getKind() == lltok::MetadataVar) {
4290 AteExtraComma = true;
4293 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4294 if (!Val->getType()->getScalarType()->isIntegerTy())
4295 return Error(EltLoc, "getelementptr index must be an integer");
4296 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4297 return Error(EltLoc, "getelementptr index type missmatch");
4298 if (Val->getType()->isVectorTy()) {
4299 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4300 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4301 if (ValNumEl != PtrNumEl)
4302 return Error(EltLoc,
4303 "getelementptr vector index has a wrong number of elements");
4305 Indices.push_back(Val);
4308 if (!Indices.empty() && !BasePointerType->getElementType()->isSized())
4309 return Error(Loc, "base element of getelementptr must be sized");
4311 if (!GetElementPtrInst::getIndexedType(BaseType, Indices))
4312 return Error(Loc, "invalid getelementptr indices");
4313 Inst = GetElementPtrInst::Create(Ptr, Indices);
4315 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4316 return AteExtraComma ? InstExtraComma : InstNormal;
4319 /// ParseExtractValue
4320 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4321 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4322 Value *Val; LocTy Loc;
4323 SmallVector<unsigned, 4> Indices;
4325 if (ParseTypeAndValue(Val, Loc, PFS) ||
4326 ParseIndexList(Indices, AteExtraComma))
4329 if (!Val->getType()->isAggregateType())
4330 return Error(Loc, "extractvalue operand must be aggregate type");
4332 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4333 return Error(Loc, "invalid indices for extractvalue");
4334 Inst = ExtractValueInst::Create(Val, Indices);
4335 return AteExtraComma ? InstExtraComma : InstNormal;
4338 /// ParseInsertValue
4339 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4340 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4341 Value *Val0, *Val1; LocTy Loc0, Loc1;
4342 SmallVector<unsigned, 4> Indices;
4344 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4345 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4346 ParseTypeAndValue(Val1, Loc1, PFS) ||
4347 ParseIndexList(Indices, AteExtraComma))
4350 if (!Val0->getType()->isAggregateType())
4351 return Error(Loc0, "insertvalue operand must be aggregate type");
4353 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4354 return Error(Loc0, "invalid indices for insertvalue");
4355 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4356 return AteExtraComma ? InstExtraComma : InstNormal;
4359 //===----------------------------------------------------------------------===//
4360 // Embedded metadata.
4361 //===----------------------------------------------------------------------===//
4363 /// ParseMDNodeVector
4364 /// ::= Element (',' Element)*
4366 /// ::= 'null' | TypeAndValue
4367 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4368 PerFunctionState *PFS) {
4369 // Check for an empty list.
4370 if (Lex.getKind() == lltok::rbrace)
4374 // Null is a special case since it is typeless.
4375 if (EatIfPresent(lltok::kw_null)) {
4381 if (ParseTypeAndValue(V, PFS)) return true;
4383 } while (EatIfPresent(lltok::comma));