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'
1348 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1349 switch (Lex.getKind()) {
1350 default: CC = CallingConv::C; return false;
1351 case lltok::kw_ccc: CC = CallingConv::C; break;
1352 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1353 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1354 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1355 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1356 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1357 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1358 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1359 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1360 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1361 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1362 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1363 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1364 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1365 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1366 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1367 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1368 case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1369 case lltok::kw_cc: {
1370 unsigned ArbitraryCC;
1372 if (ParseUInt32(ArbitraryCC))
1374 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1383 /// ParseInstructionMetadata
1384 /// ::= !dbg !42 (',' !dbg !57)*
1385 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1386 PerFunctionState *PFS) {
1388 if (Lex.getKind() != lltok::MetadataVar)
1389 return TokError("expected metadata after comma");
1391 std::string Name = Lex.getStrVal();
1392 unsigned MDK = M->getMDKindID(Name);
1396 SMLoc Loc = Lex.getLoc();
1398 if (ParseToken(lltok::exclaim, "expected '!' here"))
1401 // This code is similar to that of ParseMetadataValue, however it needs to
1402 // have special-case code for a forward reference; see the comments on
1403 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1404 // at the top level here.
1405 if (Lex.getKind() == lltok::lbrace) {
1407 if (ParseMetadataListValue(ID, PFS))
1409 assert(ID.Kind == ValID::t_MDNode);
1410 Inst->setMetadata(MDK, ID.MDNodeVal);
1412 unsigned NodeID = 0;
1413 if (ParseMDNodeID(Node, NodeID))
1416 // If we got the node, add it to the instruction.
1417 Inst->setMetadata(MDK, Node);
1419 MDRef R = { Loc, MDK, NodeID };
1420 // Otherwise, remember that this should be resolved later.
1421 ForwardRefInstMetadata[Inst].push_back(R);
1425 if (MDK == LLVMContext::MD_tbaa)
1426 InstsWithTBAATag.push_back(Inst);
1428 // If this is the end of the list, we're done.
1429 } while (EatIfPresent(lltok::comma));
1433 /// ParseOptionalAlignment
1436 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1438 if (!EatIfPresent(lltok::kw_align))
1440 LocTy AlignLoc = Lex.getLoc();
1441 if (ParseUInt32(Alignment)) return true;
1442 if (!isPowerOf2_32(Alignment))
1443 return Error(AlignLoc, "alignment is not a power of two");
1444 if (Alignment > Value::MaximumAlignment)
1445 return Error(AlignLoc, "huge alignments are not supported yet");
1449 /// ParseOptionalCommaAlign
1453 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1455 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1456 bool &AteExtraComma) {
1457 AteExtraComma = false;
1458 while (EatIfPresent(lltok::comma)) {
1459 // Metadata at the end is an early exit.
1460 if (Lex.getKind() == lltok::MetadataVar) {
1461 AteExtraComma = true;
1465 if (Lex.getKind() != lltok::kw_align)
1466 return Error(Lex.getLoc(), "expected metadata or 'align'");
1468 if (ParseOptionalAlignment(Alignment)) return true;
1474 /// ParseScopeAndOrdering
1475 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1478 /// This sets Scope and Ordering to the parsed values.
1479 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1480 AtomicOrdering &Ordering) {
1484 Scope = CrossThread;
1485 if (EatIfPresent(lltok::kw_singlethread))
1486 Scope = SingleThread;
1487 switch (Lex.getKind()) {
1488 default: return TokError("Expected ordering on atomic instruction");
1489 case lltok::kw_unordered: Ordering = Unordered; break;
1490 case lltok::kw_monotonic: Ordering = Monotonic; break;
1491 case lltok::kw_acquire: Ordering = Acquire; break;
1492 case lltok::kw_release: Ordering = Release; break;
1493 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1494 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1500 /// ParseOptionalStackAlignment
1502 /// ::= 'alignstack' '(' 4 ')'
1503 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1505 if (!EatIfPresent(lltok::kw_alignstack))
1507 LocTy ParenLoc = Lex.getLoc();
1508 if (!EatIfPresent(lltok::lparen))
1509 return Error(ParenLoc, "expected '('");
1510 LocTy AlignLoc = Lex.getLoc();
1511 if (ParseUInt32(Alignment)) return true;
1512 ParenLoc = Lex.getLoc();
1513 if (!EatIfPresent(lltok::rparen))
1514 return Error(ParenLoc, "expected ')'");
1515 if (!isPowerOf2_32(Alignment))
1516 return Error(AlignLoc, "stack alignment is not a power of two");
1520 /// ParseIndexList - This parses the index list for an insert/extractvalue
1521 /// instruction. This sets AteExtraComma in the case where we eat an extra
1522 /// comma at the end of the line and find that it is followed by metadata.
1523 /// Clients that don't allow metadata can call the version of this function that
1524 /// only takes one argument.
1527 /// ::= (',' uint32)+
1529 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1530 bool &AteExtraComma) {
1531 AteExtraComma = false;
1533 if (Lex.getKind() != lltok::comma)
1534 return TokError("expected ',' as start of index list");
1536 while (EatIfPresent(lltok::comma)) {
1537 if (Lex.getKind() == lltok::MetadataVar) {
1538 AteExtraComma = true;
1542 if (ParseUInt32(Idx)) return true;
1543 Indices.push_back(Idx);
1549 //===----------------------------------------------------------------------===//
1551 //===----------------------------------------------------------------------===//
1553 /// ParseType - Parse a type.
1554 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1555 SMLoc TypeLoc = Lex.getLoc();
1556 switch (Lex.getKind()) {
1558 return TokError("expected type");
1560 // Type ::= 'float' | 'void' (etc)
1561 Result = Lex.getTyVal();
1565 // Type ::= StructType
1566 if (ParseAnonStructType(Result, false))
1569 case lltok::lsquare:
1570 // Type ::= '[' ... ']'
1571 Lex.Lex(); // eat the lsquare.
1572 if (ParseArrayVectorType(Result, false))
1575 case lltok::less: // Either vector or packed struct.
1576 // Type ::= '<' ... '>'
1578 if (Lex.getKind() == lltok::lbrace) {
1579 if (ParseAnonStructType(Result, true) ||
1580 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1582 } else if (ParseArrayVectorType(Result, true))
1585 case lltok::LocalVar: {
1587 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1589 // If the type hasn't been defined yet, create a forward definition and
1590 // remember where that forward def'n was seen (in case it never is defined).
1591 if (Entry.first == 0) {
1592 Entry.first = StructType::create(Context, Lex.getStrVal());
1593 Entry.second = Lex.getLoc();
1595 Result = Entry.first;
1600 case lltok::LocalVarID: {
1602 if (Lex.getUIntVal() >= NumberedTypes.size())
1603 NumberedTypes.resize(Lex.getUIntVal()+1);
1604 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1606 // If the type hasn't been defined yet, create a forward definition and
1607 // remember where that forward def'n was seen (in case it never is defined).
1608 if (Entry.first == 0) {
1609 Entry.first = StructType::create(Context);
1610 Entry.second = Lex.getLoc();
1612 Result = Entry.first;
1618 // Parse the type suffixes.
1620 switch (Lex.getKind()) {
1623 if (!AllowVoid && Result->isVoidTy())
1624 return Error(TypeLoc, "void type only allowed for function results");
1627 // Type ::= Type '*'
1629 if (Result->isLabelTy())
1630 return TokError("basic block pointers are invalid");
1631 if (Result->isVoidTy())
1632 return TokError("pointers to void are invalid - use i8* instead");
1633 if (!PointerType::isValidElementType(Result))
1634 return TokError("pointer to this type is invalid");
1635 Result = PointerType::getUnqual(Result);
1639 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1640 case lltok::kw_addrspace: {
1641 if (Result->isLabelTy())
1642 return TokError("basic block pointers are invalid");
1643 if (Result->isVoidTy())
1644 return TokError("pointers to void are invalid; use i8* instead");
1645 if (!PointerType::isValidElementType(Result))
1646 return TokError("pointer to this type is invalid");
1648 if (ParseOptionalAddrSpace(AddrSpace) ||
1649 ParseToken(lltok::star, "expected '*' in address space"))
1652 Result = PointerType::get(Result, AddrSpace);
1656 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1658 if (ParseFunctionType(Result))
1665 /// ParseParameterList
1667 /// ::= '(' Arg (',' Arg)* ')'
1669 /// ::= Type OptionalAttributes Value OptionalAttributes
1670 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1671 PerFunctionState &PFS) {
1672 if (ParseToken(lltok::lparen, "expected '(' in call"))
1675 unsigned AttrIndex = 1;
1676 while (Lex.getKind() != lltok::rparen) {
1677 // If this isn't the first argument, we need a comma.
1678 if (!ArgList.empty() &&
1679 ParseToken(lltok::comma, "expected ',' in argument list"))
1682 // Parse the argument.
1685 AttrBuilder ArgAttrs;
1687 if (ParseType(ArgTy, ArgLoc))
1690 // Otherwise, handle normal operands.
1691 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1693 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1698 Lex.Lex(); // Lex the ')'.
1704 /// ParseArgumentList - Parse the argument list for a function type or function
1706 /// ::= '(' ArgTypeListI ')'
1710 /// ::= ArgTypeList ',' '...'
1711 /// ::= ArgType (',' ArgType)*
1713 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1716 assert(Lex.getKind() == lltok::lparen);
1717 Lex.Lex(); // eat the (.
1719 if (Lex.getKind() == lltok::rparen) {
1721 } else if (Lex.getKind() == lltok::dotdotdot) {
1725 LocTy TypeLoc = Lex.getLoc();
1730 if (ParseType(ArgTy) ||
1731 ParseOptionalParamAttrs(Attrs)) return true;
1733 if (ArgTy->isVoidTy())
1734 return Error(TypeLoc, "argument can not have void type");
1736 if (Lex.getKind() == lltok::LocalVar) {
1737 Name = Lex.getStrVal();
1741 if (!FunctionType::isValidArgumentType(ArgTy))
1742 return Error(TypeLoc, "invalid type for function argument");
1744 unsigned AttrIndex = 1;
1745 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1746 AttributeSet::get(ArgTy->getContext(),
1747 AttrIndex++, Attrs), Name));
1749 while (EatIfPresent(lltok::comma)) {
1750 // Handle ... at end of arg list.
1751 if (EatIfPresent(lltok::dotdotdot)) {
1756 // Otherwise must be an argument type.
1757 TypeLoc = Lex.getLoc();
1758 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1760 if (ArgTy->isVoidTy())
1761 return Error(TypeLoc, "argument can not have void type");
1763 if (Lex.getKind() == lltok::LocalVar) {
1764 Name = Lex.getStrVal();
1770 if (!ArgTy->isFirstClassType())
1771 return Error(TypeLoc, "invalid type for function argument");
1773 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1774 AttributeSet::get(ArgTy->getContext(),
1775 AttrIndex++, Attrs),
1780 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1783 /// ParseFunctionType
1784 /// ::= Type ArgumentList OptionalAttrs
1785 bool LLParser::ParseFunctionType(Type *&Result) {
1786 assert(Lex.getKind() == lltok::lparen);
1788 if (!FunctionType::isValidReturnType(Result))
1789 return TokError("invalid function return type");
1791 SmallVector<ArgInfo, 8> ArgList;
1793 if (ParseArgumentList(ArgList, isVarArg))
1796 // Reject names on the arguments lists.
1797 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1798 if (!ArgList[i].Name.empty())
1799 return Error(ArgList[i].Loc, "argument name invalid in function type");
1800 if (ArgList[i].Attrs.hasAttributes(i + 1))
1801 return Error(ArgList[i].Loc,
1802 "argument attributes invalid in function type");
1805 SmallVector<Type*, 16> ArgListTy;
1806 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1807 ArgListTy.push_back(ArgList[i].Ty);
1809 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1813 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1815 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1816 SmallVector<Type*, 8> Elts;
1817 if (ParseStructBody(Elts)) return true;
1819 Result = StructType::get(Context, Elts, Packed);
1823 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1824 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1825 std::pair<Type*, LocTy> &Entry,
1827 // If the type was already defined, diagnose the redefinition.
1828 if (Entry.first && !Entry.second.isValid())
1829 return Error(TypeLoc, "redefinition of type");
1831 // If we have opaque, just return without filling in the definition for the
1832 // struct. This counts as a definition as far as the .ll file goes.
1833 if (EatIfPresent(lltok::kw_opaque)) {
1834 // This type is being defined, so clear the location to indicate this.
1835 Entry.second = SMLoc();
1837 // If this type number has never been uttered, create it.
1838 if (Entry.first == 0)
1839 Entry.first = StructType::create(Context, Name);
1840 ResultTy = Entry.first;
1844 // If the type starts with '<', then it is either a packed struct or a vector.
1845 bool isPacked = EatIfPresent(lltok::less);
1847 // If we don't have a struct, then we have a random type alias, which we
1848 // accept for compatibility with old files. These types are not allowed to be
1849 // forward referenced and not allowed to be recursive.
1850 if (Lex.getKind() != lltok::lbrace) {
1852 return Error(TypeLoc, "forward references to non-struct type");
1856 return ParseArrayVectorType(ResultTy, true);
1857 return ParseType(ResultTy);
1860 // This type is being defined, so clear the location to indicate this.
1861 Entry.second = SMLoc();
1863 // If this type number has never been uttered, create it.
1864 if (Entry.first == 0)
1865 Entry.first = StructType::create(Context, Name);
1867 StructType *STy = cast<StructType>(Entry.first);
1869 SmallVector<Type*, 8> Body;
1870 if (ParseStructBody(Body) ||
1871 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
1874 STy->setBody(Body, isPacked);
1880 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1883 /// ::= '{' Type (',' Type)* '}'
1884 /// ::= '<' '{' '}' '>'
1885 /// ::= '<' '{' Type (',' Type)* '}' '>'
1886 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
1887 assert(Lex.getKind() == lltok::lbrace);
1888 Lex.Lex(); // Consume the '{'
1890 // Handle the empty struct.
1891 if (EatIfPresent(lltok::rbrace))
1894 LocTy EltTyLoc = Lex.getLoc();
1896 if (ParseType(Ty)) return true;
1899 if (!StructType::isValidElementType(Ty))
1900 return Error(EltTyLoc, "invalid element type for struct");
1902 while (EatIfPresent(lltok::comma)) {
1903 EltTyLoc = Lex.getLoc();
1904 if (ParseType(Ty)) return true;
1906 if (!StructType::isValidElementType(Ty))
1907 return Error(EltTyLoc, "invalid element type for struct");
1912 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
1915 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1916 /// token has already been consumed.
1918 /// ::= '[' APSINTVAL 'x' Types ']'
1919 /// ::= '<' APSINTVAL 'x' Types '>'
1920 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
1921 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1922 Lex.getAPSIntVal().getBitWidth() > 64)
1923 return TokError("expected number in address space");
1925 LocTy SizeLoc = Lex.getLoc();
1926 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1929 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1932 LocTy TypeLoc = Lex.getLoc();
1934 if (ParseType(EltTy)) return true;
1936 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1937 "expected end of sequential type"))
1942 return Error(SizeLoc, "zero element vector is illegal");
1943 if ((unsigned)Size != Size)
1944 return Error(SizeLoc, "size too large for vector");
1945 if (!VectorType::isValidElementType(EltTy))
1946 return Error(TypeLoc, "invalid vector element type");
1947 Result = VectorType::get(EltTy, unsigned(Size));
1949 if (!ArrayType::isValidElementType(EltTy))
1950 return Error(TypeLoc, "invalid array element type");
1951 Result = ArrayType::get(EltTy, Size);
1956 //===----------------------------------------------------------------------===//
1957 // Function Semantic Analysis.
1958 //===----------------------------------------------------------------------===//
1960 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1962 : P(p), F(f), FunctionNumber(functionNumber) {
1964 // Insert unnamed arguments into the NumberedVals list.
1965 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1968 NumberedVals.push_back(AI);
1971 LLParser::PerFunctionState::~PerFunctionState() {
1972 // If there were any forward referenced non-basicblock values, delete them.
1973 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1974 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1975 if (!isa<BasicBlock>(I->second.first)) {
1976 I->second.first->replaceAllUsesWith(
1977 UndefValue::get(I->second.first->getType()));
1978 delete I->second.first;
1979 I->second.first = 0;
1982 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1983 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1984 if (!isa<BasicBlock>(I->second.first)) {
1985 I->second.first->replaceAllUsesWith(
1986 UndefValue::get(I->second.first->getType()));
1987 delete I->second.first;
1988 I->second.first = 0;
1992 bool LLParser::PerFunctionState::FinishFunction() {
1993 // Check to see if someone took the address of labels in this block.
1994 if (!P.ForwardRefBlockAddresses.empty()) {
1996 if (!F.getName().empty()) {
1997 FunctionID.Kind = ValID::t_GlobalName;
1998 FunctionID.StrVal = F.getName();
2000 FunctionID.Kind = ValID::t_GlobalID;
2001 FunctionID.UIntVal = FunctionNumber;
2004 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
2005 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
2006 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
2007 // Resolve all these references.
2008 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
2011 P.ForwardRefBlockAddresses.erase(FRBAI);
2015 if (!ForwardRefVals.empty())
2016 return P.Error(ForwardRefVals.begin()->second.second,
2017 "use of undefined value '%" + ForwardRefVals.begin()->first +
2019 if (!ForwardRefValIDs.empty())
2020 return P.Error(ForwardRefValIDs.begin()->second.second,
2021 "use of undefined value '%" +
2022 Twine(ForwardRefValIDs.begin()->first) + "'");
2027 /// GetVal - Get a value with the specified name or ID, creating a
2028 /// forward reference record if needed. This can return null if the value
2029 /// exists but does not have the right type.
2030 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2031 Type *Ty, LocTy Loc) {
2032 // Look this name up in the normal function symbol table.
2033 Value *Val = F.getValueSymbolTable().lookup(Name);
2035 // If this is a forward reference for the value, see if we already created a
2036 // forward ref record.
2038 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2039 I = ForwardRefVals.find(Name);
2040 if (I != ForwardRefVals.end())
2041 Val = I->second.first;
2044 // If we have the value in the symbol table or fwd-ref table, return it.
2046 if (Val->getType() == Ty) return Val;
2047 if (Ty->isLabelTy())
2048 P.Error(Loc, "'%" + Name + "' is not a basic block");
2050 P.Error(Loc, "'%" + Name + "' defined with type '" +
2051 getTypeString(Val->getType()) + "'");
2055 // Don't make placeholders with invalid type.
2056 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2057 P.Error(Loc, "invalid use of a non-first-class type");
2061 // Otherwise, create a new forward reference for this value and remember it.
2063 if (Ty->isLabelTy())
2064 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2066 FwdVal = new Argument(Ty, Name);
2068 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2072 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2074 // Look this name up in the normal function symbol table.
2075 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
2077 // If this is a forward reference for the value, see if we already created a
2078 // forward ref record.
2080 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2081 I = ForwardRefValIDs.find(ID);
2082 if (I != ForwardRefValIDs.end())
2083 Val = I->second.first;
2086 // If we have the value in the symbol table or fwd-ref table, return it.
2088 if (Val->getType() == Ty) return Val;
2089 if (Ty->isLabelTy())
2090 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2092 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2093 getTypeString(Val->getType()) + "'");
2097 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2098 P.Error(Loc, "invalid use of a non-first-class type");
2102 // Otherwise, create a new forward reference for this value and remember it.
2104 if (Ty->isLabelTy())
2105 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2107 FwdVal = new Argument(Ty);
2109 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2113 /// SetInstName - After an instruction is parsed and inserted into its
2114 /// basic block, this installs its name.
2115 bool LLParser::PerFunctionState::SetInstName(int NameID,
2116 const std::string &NameStr,
2117 LocTy NameLoc, Instruction *Inst) {
2118 // If this instruction has void type, it cannot have a name or ID specified.
2119 if (Inst->getType()->isVoidTy()) {
2120 if (NameID != -1 || !NameStr.empty())
2121 return P.Error(NameLoc, "instructions returning void cannot have a name");
2125 // If this was a numbered instruction, verify that the instruction is the
2126 // expected value and resolve any forward references.
2127 if (NameStr.empty()) {
2128 // If neither a name nor an ID was specified, just use the next ID.
2130 NameID = NumberedVals.size();
2132 if (unsigned(NameID) != NumberedVals.size())
2133 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2134 Twine(NumberedVals.size()) + "'");
2136 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2137 ForwardRefValIDs.find(NameID);
2138 if (FI != ForwardRefValIDs.end()) {
2139 if (FI->second.first->getType() != Inst->getType())
2140 return P.Error(NameLoc, "instruction forward referenced with type '" +
2141 getTypeString(FI->second.first->getType()) + "'");
2142 FI->second.first->replaceAllUsesWith(Inst);
2143 delete FI->second.first;
2144 ForwardRefValIDs.erase(FI);
2147 NumberedVals.push_back(Inst);
2151 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2152 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2153 FI = ForwardRefVals.find(NameStr);
2154 if (FI != ForwardRefVals.end()) {
2155 if (FI->second.first->getType() != Inst->getType())
2156 return P.Error(NameLoc, "instruction forward referenced with type '" +
2157 getTypeString(FI->second.first->getType()) + "'");
2158 FI->second.first->replaceAllUsesWith(Inst);
2159 delete FI->second.first;
2160 ForwardRefVals.erase(FI);
2163 // Set the name on the instruction.
2164 Inst->setName(NameStr);
2166 if (Inst->getName() != NameStr)
2167 return P.Error(NameLoc, "multiple definition of local value named '" +
2172 /// GetBB - Get a basic block with the specified name or ID, creating a
2173 /// forward reference record if needed.
2174 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2176 return cast_or_null<BasicBlock>(GetVal(Name,
2177 Type::getLabelTy(F.getContext()), Loc));
2180 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2181 return cast_or_null<BasicBlock>(GetVal(ID,
2182 Type::getLabelTy(F.getContext()), Loc));
2185 /// DefineBB - Define the specified basic block, which is either named or
2186 /// unnamed. If there is an error, this returns null otherwise it returns
2187 /// the block being defined.
2188 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2192 BB = GetBB(NumberedVals.size(), Loc);
2194 BB = GetBB(Name, Loc);
2195 if (BB == 0) return 0; // Already diagnosed error.
2197 // Move the block to the end of the function. Forward ref'd blocks are
2198 // inserted wherever they happen to be referenced.
2199 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2201 // Remove the block from forward ref sets.
2203 ForwardRefValIDs.erase(NumberedVals.size());
2204 NumberedVals.push_back(BB);
2206 // BB forward references are already in the function symbol table.
2207 ForwardRefVals.erase(Name);
2213 //===----------------------------------------------------------------------===//
2215 //===----------------------------------------------------------------------===//
2217 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2218 /// type implied. For example, if we parse "4" we don't know what integer type
2219 /// it has. The value will later be combined with its type and checked for
2220 /// sanity. PFS is used to convert function-local operands of metadata (since
2221 /// metadata operands are not just parsed here but also converted to values).
2222 /// PFS can be null when we are not parsing metadata values inside a function.
2223 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2224 ID.Loc = Lex.getLoc();
2225 switch (Lex.getKind()) {
2226 default: return TokError("expected value token");
2227 case lltok::GlobalID: // @42
2228 ID.UIntVal = Lex.getUIntVal();
2229 ID.Kind = ValID::t_GlobalID;
2231 case lltok::GlobalVar: // @foo
2232 ID.StrVal = Lex.getStrVal();
2233 ID.Kind = ValID::t_GlobalName;
2235 case lltok::LocalVarID: // %42
2236 ID.UIntVal = Lex.getUIntVal();
2237 ID.Kind = ValID::t_LocalID;
2239 case lltok::LocalVar: // %foo
2240 ID.StrVal = Lex.getStrVal();
2241 ID.Kind = ValID::t_LocalName;
2243 case lltok::exclaim: // !42, !{...}, or !"foo"
2244 return ParseMetadataValue(ID, PFS);
2246 ID.APSIntVal = Lex.getAPSIntVal();
2247 ID.Kind = ValID::t_APSInt;
2249 case lltok::APFloat:
2250 ID.APFloatVal = Lex.getAPFloatVal();
2251 ID.Kind = ValID::t_APFloat;
2253 case lltok::kw_true:
2254 ID.ConstantVal = ConstantInt::getTrue(Context);
2255 ID.Kind = ValID::t_Constant;
2257 case lltok::kw_false:
2258 ID.ConstantVal = ConstantInt::getFalse(Context);
2259 ID.Kind = ValID::t_Constant;
2261 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2262 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2263 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2265 case lltok::lbrace: {
2266 // ValID ::= '{' ConstVector '}'
2268 SmallVector<Constant*, 16> Elts;
2269 if (ParseGlobalValueVector(Elts) ||
2270 ParseToken(lltok::rbrace, "expected end of struct constant"))
2273 ID.ConstantStructElts = new Constant*[Elts.size()];
2274 ID.UIntVal = Elts.size();
2275 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2276 ID.Kind = ValID::t_ConstantStruct;
2280 // ValID ::= '<' ConstVector '>' --> Vector.
2281 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2283 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2285 SmallVector<Constant*, 16> Elts;
2286 LocTy FirstEltLoc = Lex.getLoc();
2287 if (ParseGlobalValueVector(Elts) ||
2289 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2290 ParseToken(lltok::greater, "expected end of constant"))
2293 if (isPackedStruct) {
2294 ID.ConstantStructElts = new Constant*[Elts.size()];
2295 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2296 ID.UIntVal = Elts.size();
2297 ID.Kind = ValID::t_PackedConstantStruct;
2302 return Error(ID.Loc, "constant vector must not be empty");
2304 if (!Elts[0]->getType()->isIntegerTy() &&
2305 !Elts[0]->getType()->isFloatingPointTy() &&
2306 !Elts[0]->getType()->isPointerTy())
2307 return Error(FirstEltLoc,
2308 "vector elements must have integer, pointer or floating point type");
2310 // Verify that all the vector elements have the same type.
2311 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2312 if (Elts[i]->getType() != Elts[0]->getType())
2313 return Error(FirstEltLoc,
2314 "vector element #" + Twine(i) +
2315 " is not of type '" + getTypeString(Elts[0]->getType()));
2317 ID.ConstantVal = ConstantVector::get(Elts);
2318 ID.Kind = ValID::t_Constant;
2321 case lltok::lsquare: { // Array Constant
2323 SmallVector<Constant*, 16> Elts;
2324 LocTy FirstEltLoc = Lex.getLoc();
2325 if (ParseGlobalValueVector(Elts) ||
2326 ParseToken(lltok::rsquare, "expected end of array constant"))
2329 // Handle empty element.
2331 // Use undef instead of an array because it's inconvenient to determine
2332 // the element type at this point, there being no elements to examine.
2333 ID.Kind = ValID::t_EmptyArray;
2337 if (!Elts[0]->getType()->isFirstClassType())
2338 return Error(FirstEltLoc, "invalid array element type: " +
2339 getTypeString(Elts[0]->getType()));
2341 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2343 // Verify all elements are correct type!
2344 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2345 if (Elts[i]->getType() != Elts[0]->getType())
2346 return Error(FirstEltLoc,
2347 "array element #" + Twine(i) +
2348 " is not of type '" + getTypeString(Elts[0]->getType()));
2351 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2352 ID.Kind = ValID::t_Constant;
2355 case lltok::kw_c: // c "foo"
2357 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2359 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2360 ID.Kind = ValID::t_Constant;
2363 case lltok::kw_asm: {
2364 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2366 bool HasSideEffect, AlignStack, AsmDialect;
2368 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2369 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2370 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2371 ParseStringConstant(ID.StrVal) ||
2372 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2373 ParseToken(lltok::StringConstant, "expected constraint string"))
2375 ID.StrVal2 = Lex.getStrVal();
2376 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2377 (unsigned(AsmDialect)<<2);
2378 ID.Kind = ValID::t_InlineAsm;
2382 case lltok::kw_blockaddress: {
2383 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2388 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2390 ParseToken(lltok::comma, "expected comma in block address expression")||
2391 ParseValID(Label) ||
2392 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2395 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2396 return Error(Fn.Loc, "expected function name in blockaddress");
2397 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2398 return Error(Label.Loc, "expected basic block name in blockaddress");
2400 // Make a global variable as a placeholder for this reference.
2401 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2402 false, GlobalValue::InternalLinkage,
2404 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2405 ID.ConstantVal = FwdRef;
2406 ID.Kind = ValID::t_Constant;
2410 case lltok::kw_trunc:
2411 case lltok::kw_zext:
2412 case lltok::kw_sext:
2413 case lltok::kw_fptrunc:
2414 case lltok::kw_fpext:
2415 case lltok::kw_bitcast:
2416 case lltok::kw_uitofp:
2417 case lltok::kw_sitofp:
2418 case lltok::kw_fptoui:
2419 case lltok::kw_fptosi:
2420 case lltok::kw_inttoptr:
2421 case lltok::kw_ptrtoint: {
2422 unsigned Opc = Lex.getUIntVal();
2426 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2427 ParseGlobalTypeAndValue(SrcVal) ||
2428 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2429 ParseType(DestTy) ||
2430 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2432 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2433 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2434 getTypeString(SrcVal->getType()) + "' to '" +
2435 getTypeString(DestTy) + "'");
2436 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2438 ID.Kind = ValID::t_Constant;
2441 case lltok::kw_extractvalue: {
2444 SmallVector<unsigned, 4> Indices;
2445 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2446 ParseGlobalTypeAndValue(Val) ||
2447 ParseIndexList(Indices) ||
2448 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2451 if (!Val->getType()->isAggregateType())
2452 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2453 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2454 return Error(ID.Loc, "invalid indices for extractvalue");
2455 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2456 ID.Kind = ValID::t_Constant;
2459 case lltok::kw_insertvalue: {
2461 Constant *Val0, *Val1;
2462 SmallVector<unsigned, 4> Indices;
2463 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2464 ParseGlobalTypeAndValue(Val0) ||
2465 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2466 ParseGlobalTypeAndValue(Val1) ||
2467 ParseIndexList(Indices) ||
2468 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2470 if (!Val0->getType()->isAggregateType())
2471 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2472 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2473 return Error(ID.Loc, "invalid indices for insertvalue");
2474 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2475 ID.Kind = ValID::t_Constant;
2478 case lltok::kw_icmp:
2479 case lltok::kw_fcmp: {
2480 unsigned PredVal, Opc = Lex.getUIntVal();
2481 Constant *Val0, *Val1;
2483 if (ParseCmpPredicate(PredVal, Opc) ||
2484 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2485 ParseGlobalTypeAndValue(Val0) ||
2486 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2487 ParseGlobalTypeAndValue(Val1) ||
2488 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2491 if (Val0->getType() != Val1->getType())
2492 return Error(ID.Loc, "compare operands must have the same type");
2494 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2496 if (Opc == Instruction::FCmp) {
2497 if (!Val0->getType()->isFPOrFPVectorTy())
2498 return Error(ID.Loc, "fcmp requires floating point operands");
2499 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2501 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2502 if (!Val0->getType()->isIntOrIntVectorTy() &&
2503 !Val0->getType()->getScalarType()->isPointerTy())
2504 return Error(ID.Loc, "icmp requires pointer or integer operands");
2505 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2507 ID.Kind = ValID::t_Constant;
2511 // Binary Operators.
2513 case lltok::kw_fadd:
2515 case lltok::kw_fsub:
2517 case lltok::kw_fmul:
2518 case lltok::kw_udiv:
2519 case lltok::kw_sdiv:
2520 case lltok::kw_fdiv:
2521 case lltok::kw_urem:
2522 case lltok::kw_srem:
2523 case lltok::kw_frem:
2525 case lltok::kw_lshr:
2526 case lltok::kw_ashr: {
2530 unsigned Opc = Lex.getUIntVal();
2531 Constant *Val0, *Val1;
2533 LocTy ModifierLoc = Lex.getLoc();
2534 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2535 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2536 if (EatIfPresent(lltok::kw_nuw))
2538 if (EatIfPresent(lltok::kw_nsw)) {
2540 if (EatIfPresent(lltok::kw_nuw))
2543 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2544 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2545 if (EatIfPresent(lltok::kw_exact))
2548 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2549 ParseGlobalTypeAndValue(Val0) ||
2550 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2551 ParseGlobalTypeAndValue(Val1) ||
2552 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2554 if (Val0->getType() != Val1->getType())
2555 return Error(ID.Loc, "operands of constexpr must have same type");
2556 if (!Val0->getType()->isIntOrIntVectorTy()) {
2558 return Error(ModifierLoc, "nuw only applies to integer operations");
2560 return Error(ModifierLoc, "nsw only applies to integer operations");
2562 // Check that the type is valid for the operator.
2564 case Instruction::Add:
2565 case Instruction::Sub:
2566 case Instruction::Mul:
2567 case Instruction::UDiv:
2568 case Instruction::SDiv:
2569 case Instruction::URem:
2570 case Instruction::SRem:
2571 case Instruction::Shl:
2572 case Instruction::AShr:
2573 case Instruction::LShr:
2574 if (!Val0->getType()->isIntOrIntVectorTy())
2575 return Error(ID.Loc, "constexpr requires integer operands");
2577 case Instruction::FAdd:
2578 case Instruction::FSub:
2579 case Instruction::FMul:
2580 case Instruction::FDiv:
2581 case Instruction::FRem:
2582 if (!Val0->getType()->isFPOrFPVectorTy())
2583 return Error(ID.Loc, "constexpr requires fp operands");
2585 default: llvm_unreachable("Unknown binary operator!");
2588 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2589 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2590 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2591 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2593 ID.Kind = ValID::t_Constant;
2597 // Logical Operations
2600 case lltok::kw_xor: {
2601 unsigned Opc = Lex.getUIntVal();
2602 Constant *Val0, *Val1;
2604 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2605 ParseGlobalTypeAndValue(Val0) ||
2606 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2607 ParseGlobalTypeAndValue(Val1) ||
2608 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2610 if (Val0->getType() != Val1->getType())
2611 return Error(ID.Loc, "operands of constexpr must have same type");
2612 if (!Val0->getType()->isIntOrIntVectorTy())
2613 return Error(ID.Loc,
2614 "constexpr requires integer or integer vector operands");
2615 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2616 ID.Kind = ValID::t_Constant;
2620 case lltok::kw_getelementptr:
2621 case lltok::kw_shufflevector:
2622 case lltok::kw_insertelement:
2623 case lltok::kw_extractelement:
2624 case lltok::kw_select: {
2625 unsigned Opc = Lex.getUIntVal();
2626 SmallVector<Constant*, 16> Elts;
2627 bool InBounds = false;
2629 if (Opc == Instruction::GetElementPtr)
2630 InBounds = EatIfPresent(lltok::kw_inbounds);
2631 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2632 ParseGlobalValueVector(Elts) ||
2633 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2636 if (Opc == Instruction::GetElementPtr) {
2637 if (Elts.size() == 0 ||
2638 !Elts[0]->getType()->getScalarType()->isPointerTy())
2639 return Error(ID.Loc, "getelementptr requires pointer operand");
2641 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2642 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2643 return Error(ID.Loc, "invalid indices for getelementptr");
2644 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2646 } else if (Opc == Instruction::Select) {
2647 if (Elts.size() != 3)
2648 return Error(ID.Loc, "expected three operands to select");
2649 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2651 return Error(ID.Loc, Reason);
2652 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2653 } else if (Opc == Instruction::ShuffleVector) {
2654 if (Elts.size() != 3)
2655 return Error(ID.Loc, "expected three operands to shufflevector");
2656 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2657 return Error(ID.Loc, "invalid operands to shufflevector");
2659 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2660 } else if (Opc == Instruction::ExtractElement) {
2661 if (Elts.size() != 2)
2662 return Error(ID.Loc, "expected two operands to extractelement");
2663 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2664 return Error(ID.Loc, "invalid extractelement operands");
2665 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2667 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2668 if (Elts.size() != 3)
2669 return Error(ID.Loc, "expected three operands to insertelement");
2670 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2671 return Error(ID.Loc, "invalid insertelement operands");
2673 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2676 ID.Kind = ValID::t_Constant;
2685 /// ParseGlobalValue - Parse a global value with the specified type.
2686 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2690 bool Parsed = ParseValID(ID) ||
2691 ConvertValIDToValue(Ty, ID, V, NULL);
2692 if (V && !(C = dyn_cast<Constant>(V)))
2693 return Error(ID.Loc, "global values must be constants");
2697 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2699 return ParseType(Ty) ||
2700 ParseGlobalValue(Ty, V);
2703 /// ParseGlobalValueVector
2705 /// ::= TypeAndValue (',' TypeAndValue)*
2706 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2708 if (Lex.getKind() == lltok::rbrace ||
2709 Lex.getKind() == lltok::rsquare ||
2710 Lex.getKind() == lltok::greater ||
2711 Lex.getKind() == lltok::rparen)
2715 if (ParseGlobalTypeAndValue(C)) return true;
2718 while (EatIfPresent(lltok::comma)) {
2719 if (ParseGlobalTypeAndValue(C)) return true;
2726 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2727 assert(Lex.getKind() == lltok::lbrace);
2730 SmallVector<Value*, 16> Elts;
2731 if (ParseMDNodeVector(Elts, PFS) ||
2732 ParseToken(lltok::rbrace, "expected end of metadata node"))
2735 ID.MDNodeVal = MDNode::get(Context, Elts);
2736 ID.Kind = ValID::t_MDNode;
2740 /// ParseMetadataValue
2744 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2745 assert(Lex.getKind() == lltok::exclaim);
2750 if (Lex.getKind() == lltok::lbrace)
2751 return ParseMetadataListValue(ID, PFS);
2753 // Standalone metadata reference
2755 if (Lex.getKind() == lltok::APSInt) {
2756 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2757 ID.Kind = ValID::t_MDNode;
2762 // ::= '!' STRINGCONSTANT
2763 if (ParseMDString(ID.MDStringVal)) return true;
2764 ID.Kind = ValID::t_MDString;
2769 //===----------------------------------------------------------------------===//
2770 // Function Parsing.
2771 //===----------------------------------------------------------------------===//
2773 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2774 PerFunctionState *PFS) {
2775 if (Ty->isFunctionTy())
2776 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2779 case ValID::t_LocalID:
2780 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2781 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2783 case ValID::t_LocalName:
2784 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2785 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2787 case ValID::t_InlineAsm: {
2788 PointerType *PTy = dyn_cast<PointerType>(Ty);
2790 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2791 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2792 return Error(ID.Loc, "invalid type for inline asm constraint string");
2793 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
2794 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
2797 case ValID::t_MDNode:
2798 if (!Ty->isMetadataTy())
2799 return Error(ID.Loc, "metadata value must have metadata type");
2802 case ValID::t_MDString:
2803 if (!Ty->isMetadataTy())
2804 return Error(ID.Loc, "metadata value must have metadata type");
2807 case ValID::t_GlobalName:
2808 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2810 case ValID::t_GlobalID:
2811 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2813 case ValID::t_APSInt:
2814 if (!Ty->isIntegerTy())
2815 return Error(ID.Loc, "integer constant must have integer type");
2816 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2817 V = ConstantInt::get(Context, ID.APSIntVal);
2819 case ValID::t_APFloat:
2820 if (!Ty->isFloatingPointTy() ||
2821 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2822 return Error(ID.Loc, "floating point constant invalid for type");
2824 // The lexer has no type info, so builds all half, float, and double FP
2825 // constants as double. Fix this here. Long double does not need this.
2826 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
2829 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
2831 else if (Ty->isFloatTy())
2832 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2835 V = ConstantFP::get(Context, ID.APFloatVal);
2837 if (V->getType() != Ty)
2838 return Error(ID.Loc, "floating point constant does not have type '" +
2839 getTypeString(Ty) + "'");
2843 if (!Ty->isPointerTy())
2844 return Error(ID.Loc, "null must be a pointer type");
2845 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2847 case ValID::t_Undef:
2848 // FIXME: LabelTy should not be a first-class type.
2849 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2850 return Error(ID.Loc, "invalid type for undef constant");
2851 V = UndefValue::get(Ty);
2853 case ValID::t_EmptyArray:
2854 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2855 return Error(ID.Loc, "invalid empty array initializer");
2856 V = UndefValue::get(Ty);
2859 // FIXME: LabelTy should not be a first-class type.
2860 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2861 return Error(ID.Loc, "invalid type for null constant");
2862 V = Constant::getNullValue(Ty);
2864 case ValID::t_Constant:
2865 if (ID.ConstantVal->getType() != Ty)
2866 return Error(ID.Loc, "constant expression type mismatch");
2870 case ValID::t_ConstantStruct:
2871 case ValID::t_PackedConstantStruct:
2872 if (StructType *ST = dyn_cast<StructType>(Ty)) {
2873 if (ST->getNumElements() != ID.UIntVal)
2874 return Error(ID.Loc,
2875 "initializer with struct type has wrong # elements");
2876 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
2877 return Error(ID.Loc, "packed'ness of initializer and type don't match");
2879 // Verify that the elements are compatible with the structtype.
2880 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
2881 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
2882 return Error(ID.Loc, "element " + Twine(i) +
2883 " of struct initializer doesn't match struct element type");
2885 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
2888 return Error(ID.Loc, "constant expression type mismatch");
2891 llvm_unreachable("Invalid ValID");
2894 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
2897 return ParseValID(ID, PFS) ||
2898 ConvertValIDToValue(Ty, ID, V, PFS);
2901 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
2903 return ParseType(Ty) ||
2904 ParseValue(Ty, V, PFS);
2907 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2908 PerFunctionState &PFS) {
2911 if (ParseTypeAndValue(V, PFS)) return true;
2912 if (!isa<BasicBlock>(V))
2913 return Error(Loc, "expected a basic block");
2914 BB = cast<BasicBlock>(V);
2920 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2921 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2922 /// OptionalAlign OptGC OptionalPrefix
2923 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2924 // Parse the linkage.
2925 LocTy LinkageLoc = Lex.getLoc();
2928 unsigned Visibility;
2929 AttrBuilder RetAttrs;
2932 LocTy RetTypeLoc = Lex.getLoc();
2933 if (ParseOptionalLinkage(Linkage) ||
2934 ParseOptionalVisibility(Visibility) ||
2935 ParseOptionalCallingConv(CC) ||
2936 ParseOptionalReturnAttrs(RetAttrs) ||
2937 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2940 // Verify that the linkage is ok.
2941 switch ((GlobalValue::LinkageTypes)Linkage) {
2942 case GlobalValue::ExternalLinkage:
2943 break; // always ok.
2944 case GlobalValue::DLLImportLinkage:
2945 case GlobalValue::ExternalWeakLinkage:
2947 return Error(LinkageLoc, "invalid linkage for function definition");
2949 case GlobalValue::PrivateLinkage:
2950 case GlobalValue::LinkerPrivateLinkage:
2951 case GlobalValue::LinkerPrivateWeakLinkage:
2952 case GlobalValue::InternalLinkage:
2953 case GlobalValue::AvailableExternallyLinkage:
2954 case GlobalValue::LinkOnceAnyLinkage:
2955 case GlobalValue::LinkOnceODRLinkage:
2956 case GlobalValue::WeakAnyLinkage:
2957 case GlobalValue::WeakODRLinkage:
2958 case GlobalValue::DLLExportLinkage:
2960 return Error(LinkageLoc, "invalid linkage for function declaration");
2962 case GlobalValue::AppendingLinkage:
2963 case GlobalValue::CommonLinkage:
2964 return Error(LinkageLoc, "invalid function linkage type");
2967 if (!FunctionType::isValidReturnType(RetType))
2968 return Error(RetTypeLoc, "invalid function return type");
2970 LocTy NameLoc = Lex.getLoc();
2972 std::string FunctionName;
2973 if (Lex.getKind() == lltok::GlobalVar) {
2974 FunctionName = Lex.getStrVal();
2975 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2976 unsigned NameID = Lex.getUIntVal();
2978 if (NameID != NumberedVals.size())
2979 return TokError("function expected to be numbered '%" +
2980 Twine(NumberedVals.size()) + "'");
2982 return TokError("expected function name");
2987 if (Lex.getKind() != lltok::lparen)
2988 return TokError("expected '(' in function argument list");
2990 SmallVector<ArgInfo, 8> ArgList;
2992 AttrBuilder FuncAttrs;
2993 std::vector<unsigned> FwdRefAttrGrps;
2995 std::string Section;
2999 LocTy UnnamedAddrLoc;
3000 Constant *Prefix = 0;
3002 if (ParseArgumentList(ArgList, isVarArg) ||
3003 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
3005 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
3007 (EatIfPresent(lltok::kw_section) &&
3008 ParseStringConstant(Section)) ||
3009 ParseOptionalAlignment(Alignment) ||
3010 (EatIfPresent(lltok::kw_gc) &&
3011 ParseStringConstant(GC)) ||
3012 (EatIfPresent(lltok::kw_prefix) &&
3013 ParseGlobalTypeAndValue(Prefix)))
3016 if (FuncAttrs.contains(Attribute::Builtin))
3017 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
3019 // If the alignment was parsed as an attribute, move to the alignment field.
3020 if (FuncAttrs.hasAlignmentAttr()) {
3021 Alignment = FuncAttrs.getAlignment();
3022 FuncAttrs.removeAttribute(Attribute::Alignment);
3025 // Okay, if we got here, the function is syntactically valid. Convert types
3026 // and do semantic checks.
3027 std::vector<Type*> ParamTypeList;
3028 SmallVector<AttributeSet, 8> Attrs;
3030 if (RetAttrs.hasAttributes())
3031 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3032 AttributeSet::ReturnIndex,
3035 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3036 ParamTypeList.push_back(ArgList[i].Ty);
3037 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3038 AttrBuilder B(ArgList[i].Attrs, i + 1);
3039 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3043 if (FuncAttrs.hasAttributes())
3044 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3045 AttributeSet::FunctionIndex,
3048 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3050 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
3051 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
3054 FunctionType::get(RetType, ParamTypeList, isVarArg);
3055 PointerType *PFT = PointerType::getUnqual(FT);
3058 if (!FunctionName.empty()) {
3059 // If this was a definition of a forward reference, remove the definition
3060 // from the forward reference table and fill in the forward ref.
3061 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
3062 ForwardRefVals.find(FunctionName);
3063 if (FRVI != ForwardRefVals.end()) {
3064 Fn = M->getFunction(FunctionName);
3066 return Error(FRVI->second.second, "invalid forward reference to "
3067 "function as global value!");
3068 if (Fn->getType() != PFT)
3069 return Error(FRVI->second.second, "invalid forward reference to "
3070 "function '" + FunctionName + "' with wrong type!");
3072 ForwardRefVals.erase(FRVI);
3073 } else if ((Fn = M->getFunction(FunctionName))) {
3074 // Reject redefinitions.
3075 return Error(NameLoc, "invalid redefinition of function '" +
3076 FunctionName + "'");
3077 } else if (M->getNamedValue(FunctionName)) {
3078 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
3082 // If this is a definition of a forward referenced function, make sure the
3084 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
3085 = ForwardRefValIDs.find(NumberedVals.size());
3086 if (I != ForwardRefValIDs.end()) {
3087 Fn = cast<Function>(I->second.first);
3088 if (Fn->getType() != PFT)
3089 return Error(NameLoc, "type of definition and forward reference of '@" +
3090 Twine(NumberedVals.size()) + "' disagree");
3091 ForwardRefValIDs.erase(I);
3096 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
3097 else // Move the forward-reference to the correct spot in the module.
3098 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
3100 if (FunctionName.empty())
3101 NumberedVals.push_back(Fn);
3103 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
3104 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
3105 Fn->setCallingConv(CC);
3106 Fn->setAttributes(PAL);
3107 Fn->setUnnamedAddr(UnnamedAddr);
3108 Fn->setAlignment(Alignment);
3109 Fn->setSection(Section);
3110 if (!GC.empty()) Fn->setGC(GC.c_str());
3111 Fn->setPrefixData(Prefix);
3112 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
3114 // Add all of the arguments we parsed to the function.
3115 Function::arg_iterator ArgIt = Fn->arg_begin();
3116 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
3117 // If the argument has a name, insert it into the argument symbol table.
3118 if (ArgList[i].Name.empty()) continue;
3120 // Set the name, if it conflicted, it will be auto-renamed.
3121 ArgIt->setName(ArgList[i].Name);
3123 if (ArgIt->getName() != ArgList[i].Name)
3124 return Error(ArgList[i].Loc, "redefinition of argument '%" +
3125 ArgList[i].Name + "'");
3132 /// ParseFunctionBody
3133 /// ::= '{' BasicBlock+ '}'
3135 bool LLParser::ParseFunctionBody(Function &Fn) {
3136 if (Lex.getKind() != lltok::lbrace)
3137 return TokError("expected '{' in function body");
3138 Lex.Lex(); // eat the {.
3140 int FunctionNumber = -1;
3141 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
3143 PerFunctionState PFS(*this, Fn, FunctionNumber);
3145 // We need at least one basic block.
3146 if (Lex.getKind() == lltok::rbrace)
3147 return TokError("function body requires at least one basic block");
3149 while (Lex.getKind() != lltok::rbrace)
3150 if (ParseBasicBlock(PFS)) return true;
3155 // Verify function is ok.
3156 return PFS.FinishFunction();
3160 /// ::= LabelStr? Instruction*
3161 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
3162 // If this basic block starts out with a name, remember it.
3164 LocTy NameLoc = Lex.getLoc();
3165 if (Lex.getKind() == lltok::LabelStr) {
3166 Name = Lex.getStrVal();
3170 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
3171 if (BB == 0) return true;
3173 std::string NameStr;
3175 // Parse the instructions in this block until we get a terminator.
3178 // This instruction may have three possibilities for a name: a) none
3179 // specified, b) name specified "%foo =", c) number specified: "%4 =".
3180 LocTy NameLoc = Lex.getLoc();
3184 if (Lex.getKind() == lltok::LocalVarID) {
3185 NameID = Lex.getUIntVal();
3187 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
3189 } else if (Lex.getKind() == lltok::LocalVar) {
3190 NameStr = Lex.getStrVal();
3192 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
3196 switch (ParseInstruction(Inst, BB, PFS)) {
3197 default: llvm_unreachable("Unknown ParseInstruction result!");
3198 case InstError: return true;
3200 BB->getInstList().push_back(Inst);
3202 // With a normal result, we check to see if the instruction is followed by
3203 // a comma and metadata.
3204 if (EatIfPresent(lltok::comma))
3205 if (ParseInstructionMetadata(Inst, &PFS))
3208 case InstExtraComma:
3209 BB->getInstList().push_back(Inst);
3211 // If the instruction parser ate an extra comma at the end of it, it
3212 // *must* be followed by metadata.
3213 if (ParseInstructionMetadata(Inst, &PFS))
3218 // Set the name on the instruction.
3219 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3220 } while (!isa<TerminatorInst>(Inst));
3225 //===----------------------------------------------------------------------===//
3226 // Instruction Parsing.
3227 //===----------------------------------------------------------------------===//
3229 /// ParseInstruction - Parse one of the many different instructions.
3231 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3232 PerFunctionState &PFS) {
3233 lltok::Kind Token = Lex.getKind();
3234 if (Token == lltok::Eof)
3235 return TokError("found end of file when expecting more instructions");
3236 LocTy Loc = Lex.getLoc();
3237 unsigned KeywordVal = Lex.getUIntVal();
3238 Lex.Lex(); // Eat the keyword.
3241 default: return Error(Loc, "expected instruction opcode");
3242 // Terminator Instructions.
3243 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3244 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3245 case lltok::kw_br: return ParseBr(Inst, PFS);
3246 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3247 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3248 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3249 case lltok::kw_resume: return ParseResume(Inst, PFS);
3250 // Binary Operators.
3254 case lltok::kw_shl: {
3255 bool NUW = EatIfPresent(lltok::kw_nuw);
3256 bool NSW = EatIfPresent(lltok::kw_nsw);
3257 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3259 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3261 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3262 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3265 case lltok::kw_fadd:
3266 case lltok::kw_fsub:
3267 case lltok::kw_fmul:
3268 case lltok::kw_fdiv:
3269 case lltok::kw_frem: {
3270 FastMathFlags FMF = EatFastMathFlagsIfPresent();
3271 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
3275 Inst->setFastMathFlags(FMF);
3279 case lltok::kw_sdiv:
3280 case lltok::kw_udiv:
3281 case lltok::kw_lshr:
3282 case lltok::kw_ashr: {
3283 bool Exact = EatIfPresent(lltok::kw_exact);
3285 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3286 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3290 case lltok::kw_urem:
3291 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3294 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3295 case lltok::kw_icmp:
3296 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3298 case lltok::kw_trunc:
3299 case lltok::kw_zext:
3300 case lltok::kw_sext:
3301 case lltok::kw_fptrunc:
3302 case lltok::kw_fpext:
3303 case lltok::kw_bitcast:
3304 case lltok::kw_uitofp:
3305 case lltok::kw_sitofp:
3306 case lltok::kw_fptoui:
3307 case lltok::kw_fptosi:
3308 case lltok::kw_inttoptr:
3309 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3311 case lltok::kw_select: return ParseSelect(Inst, PFS);
3312 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3313 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3314 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3315 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3316 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3317 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3318 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3319 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3321 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3322 case lltok::kw_load: return ParseLoad(Inst, PFS);
3323 case lltok::kw_store: return ParseStore(Inst, PFS);
3324 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3325 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3326 case lltok::kw_fence: return ParseFence(Inst, PFS);
3327 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3328 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3329 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3333 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3334 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3335 if (Opc == Instruction::FCmp) {
3336 switch (Lex.getKind()) {
3337 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
3338 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3339 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3340 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3341 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3342 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3343 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3344 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3345 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3346 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3347 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3348 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3349 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3350 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3351 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3352 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3353 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3356 switch (Lex.getKind()) {
3357 default: return TokError("expected icmp predicate (e.g. 'eq')");
3358 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3359 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3360 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3361 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3362 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3363 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3364 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3365 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3366 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3367 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3374 //===----------------------------------------------------------------------===//
3375 // Terminator Instructions.
3376 //===----------------------------------------------------------------------===//
3378 /// ParseRet - Parse a return instruction.
3379 /// ::= 'ret' void (',' !dbg, !1)*
3380 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3381 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3382 PerFunctionState &PFS) {
3383 SMLoc TypeLoc = Lex.getLoc();
3385 if (ParseType(Ty, true /*void allowed*/)) return true;
3387 Type *ResType = PFS.getFunction().getReturnType();
3389 if (Ty->isVoidTy()) {
3390 if (!ResType->isVoidTy())
3391 return Error(TypeLoc, "value doesn't match function result type '" +
3392 getTypeString(ResType) + "'");
3394 Inst = ReturnInst::Create(Context);
3399 if (ParseValue(Ty, RV, PFS)) return true;
3401 if (ResType != RV->getType())
3402 return Error(TypeLoc, "value doesn't match function result type '" +
3403 getTypeString(ResType) + "'");
3405 Inst = ReturnInst::Create(Context, RV);
3411 /// ::= 'br' TypeAndValue
3412 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3413 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3416 BasicBlock *Op1, *Op2;
3417 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3419 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3420 Inst = BranchInst::Create(BB);
3424 if (Op0->getType() != Type::getInt1Ty(Context))
3425 return Error(Loc, "branch condition must have 'i1' type");
3427 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3428 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3429 ParseToken(lltok::comma, "expected ',' after true destination") ||
3430 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3433 Inst = BranchInst::Create(Op1, Op2, Op0);
3439 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3441 /// ::= (TypeAndValue ',' TypeAndValue)*
3442 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3443 LocTy CondLoc, BBLoc;
3445 BasicBlock *DefaultBB;
3446 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3447 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3448 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3449 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3452 if (!Cond->getType()->isIntegerTy())
3453 return Error(CondLoc, "switch condition must have integer type");
3455 // Parse the jump table pairs.
3456 SmallPtrSet<Value*, 32> SeenCases;
3457 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3458 while (Lex.getKind() != lltok::rsquare) {
3462 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3463 ParseToken(lltok::comma, "expected ',' after case value") ||
3464 ParseTypeAndBasicBlock(DestBB, PFS))
3467 if (!SeenCases.insert(Constant))
3468 return Error(CondLoc, "duplicate case value in switch");
3469 if (!isa<ConstantInt>(Constant))
3470 return Error(CondLoc, "case value is not a constant integer");
3472 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3475 Lex.Lex(); // Eat the ']'.
3477 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3478 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3479 SI->addCase(Table[i].first, Table[i].second);
3486 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3487 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3490 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3491 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3492 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3495 if (!Address->getType()->isPointerTy())
3496 return Error(AddrLoc, "indirectbr address must have pointer type");
3498 // Parse the destination list.
3499 SmallVector<BasicBlock*, 16> DestList;
3501 if (Lex.getKind() != lltok::rsquare) {
3503 if (ParseTypeAndBasicBlock(DestBB, PFS))
3505 DestList.push_back(DestBB);
3507 while (EatIfPresent(lltok::comma)) {
3508 if (ParseTypeAndBasicBlock(DestBB, PFS))
3510 DestList.push_back(DestBB);
3514 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3517 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3518 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3519 IBI->addDestination(DestList[i]);
3526 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3527 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3528 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3529 LocTy CallLoc = Lex.getLoc();
3530 AttrBuilder RetAttrs, FnAttrs;
3531 std::vector<unsigned> FwdRefAttrGrps;
3537 SmallVector<ParamInfo, 16> ArgList;
3539 BasicBlock *NormalBB, *UnwindBB;
3540 if (ParseOptionalCallingConv(CC) ||
3541 ParseOptionalReturnAttrs(RetAttrs) ||
3542 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3543 ParseValID(CalleeID) ||
3544 ParseParameterList(ArgList, PFS) ||
3545 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3547 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3548 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3549 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3550 ParseTypeAndBasicBlock(UnwindBB, PFS))
3553 // If RetType is a non-function pointer type, then this is the short syntax
3554 // for the call, which means that RetType is just the return type. Infer the
3555 // rest of the function argument types from the arguments that are present.
3556 PointerType *PFTy = 0;
3557 FunctionType *Ty = 0;
3558 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3559 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3560 // Pull out the types of all of the arguments...
3561 std::vector<Type*> ParamTypes;
3562 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3563 ParamTypes.push_back(ArgList[i].V->getType());
3565 if (!FunctionType::isValidReturnType(RetType))
3566 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3568 Ty = FunctionType::get(RetType, ParamTypes, false);
3569 PFTy = PointerType::getUnqual(Ty);
3572 // Look up the callee.
3574 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3576 // Set up the Attribute for the function.
3577 SmallVector<AttributeSet, 8> Attrs;
3578 if (RetAttrs.hasAttributes())
3579 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3580 AttributeSet::ReturnIndex,
3583 SmallVector<Value*, 8> Args;
3585 // Loop through FunctionType's arguments and ensure they are specified
3586 // correctly. Also, gather any parameter attributes.
3587 FunctionType::param_iterator I = Ty->param_begin();
3588 FunctionType::param_iterator E = Ty->param_end();
3589 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3590 Type *ExpectedTy = 0;
3593 } else if (!Ty->isVarArg()) {
3594 return Error(ArgList[i].Loc, "too many arguments specified");
3597 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3598 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3599 getTypeString(ExpectedTy) + "'");
3600 Args.push_back(ArgList[i].V);
3601 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3602 AttrBuilder B(ArgList[i].Attrs, i + 1);
3603 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3608 return Error(CallLoc, "not enough parameters specified for call");
3610 if (FnAttrs.hasAttributes())
3611 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3612 AttributeSet::FunctionIndex,
3615 // Finish off the Attribute and check them
3616 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3618 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3619 II->setCallingConv(CC);
3620 II->setAttributes(PAL);
3621 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
3627 /// ::= 'resume' TypeAndValue
3628 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3629 Value *Exn; LocTy ExnLoc;
3630 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3633 ResumeInst *RI = ResumeInst::Create(Exn);
3638 //===----------------------------------------------------------------------===//
3639 // Binary Operators.
3640 //===----------------------------------------------------------------------===//
3643 /// ::= ArithmeticOps TypeAndValue ',' Value
3645 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3646 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3647 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3648 unsigned Opc, unsigned OperandType) {
3649 LocTy Loc; Value *LHS, *RHS;
3650 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3651 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3652 ParseValue(LHS->getType(), RHS, PFS))
3656 switch (OperandType) {
3657 default: llvm_unreachable("Unknown operand type!");
3658 case 0: // int or FP.
3659 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3660 LHS->getType()->isFPOrFPVectorTy();
3662 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3663 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3667 return Error(Loc, "invalid operand type for instruction");
3669 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3674 /// ::= ArithmeticOps TypeAndValue ',' Value {
3675 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3677 LocTy Loc; Value *LHS, *RHS;
3678 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3679 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3680 ParseValue(LHS->getType(), RHS, PFS))
3683 if (!LHS->getType()->isIntOrIntVectorTy())
3684 return Error(Loc,"instruction requires integer or integer vector operands");
3686 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3692 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3693 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3694 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3696 // Parse the integer/fp comparison predicate.
3700 if (ParseCmpPredicate(Pred, Opc) ||
3701 ParseTypeAndValue(LHS, Loc, PFS) ||
3702 ParseToken(lltok::comma, "expected ',' after compare value") ||
3703 ParseValue(LHS->getType(), RHS, PFS))
3706 if (Opc == Instruction::FCmp) {
3707 if (!LHS->getType()->isFPOrFPVectorTy())
3708 return Error(Loc, "fcmp requires floating point operands");
3709 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3711 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3712 if (!LHS->getType()->isIntOrIntVectorTy() &&
3713 !LHS->getType()->getScalarType()->isPointerTy())
3714 return Error(Loc, "icmp requires integer operands");
3715 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3720 //===----------------------------------------------------------------------===//
3721 // Other Instructions.
3722 //===----------------------------------------------------------------------===//
3726 /// ::= CastOpc TypeAndValue 'to' Type
3727 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3732 if (ParseTypeAndValue(Op, Loc, PFS) ||
3733 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3737 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3738 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3739 return Error(Loc, "invalid cast opcode for cast from '" +
3740 getTypeString(Op->getType()) + "' to '" +
3741 getTypeString(DestTy) + "'");
3743 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3748 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3749 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3751 Value *Op0, *Op1, *Op2;
3752 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3753 ParseToken(lltok::comma, "expected ',' after select condition") ||
3754 ParseTypeAndValue(Op1, PFS) ||
3755 ParseToken(lltok::comma, "expected ',' after select value") ||
3756 ParseTypeAndValue(Op2, PFS))
3759 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3760 return Error(Loc, Reason);
3762 Inst = SelectInst::Create(Op0, Op1, Op2);
3767 /// ::= 'va_arg' TypeAndValue ',' Type
3768 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3772 if (ParseTypeAndValue(Op, PFS) ||
3773 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3774 ParseType(EltTy, TypeLoc))
3777 if (!EltTy->isFirstClassType())
3778 return Error(TypeLoc, "va_arg requires operand with first class type");
3780 Inst = new VAArgInst(Op, EltTy);
3784 /// ParseExtractElement
3785 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3786 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3789 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3790 ParseToken(lltok::comma, "expected ',' after extract value") ||
3791 ParseTypeAndValue(Op1, PFS))
3794 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3795 return Error(Loc, "invalid extractelement operands");
3797 Inst = ExtractElementInst::Create(Op0, Op1);
3801 /// ParseInsertElement
3802 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3803 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3805 Value *Op0, *Op1, *Op2;
3806 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3807 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3808 ParseTypeAndValue(Op1, PFS) ||
3809 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3810 ParseTypeAndValue(Op2, PFS))
3813 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3814 return Error(Loc, "invalid insertelement operands");
3816 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3820 /// ParseShuffleVector
3821 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3822 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3824 Value *Op0, *Op1, *Op2;
3825 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3826 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3827 ParseTypeAndValue(Op1, PFS) ||
3828 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3829 ParseTypeAndValue(Op2, PFS))
3832 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3833 return Error(Loc, "invalid shufflevector operands");
3835 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3840 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3841 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3842 Type *Ty = 0; LocTy TypeLoc;
3845 if (ParseType(Ty, TypeLoc) ||
3846 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3847 ParseValue(Ty, Op0, PFS) ||
3848 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3849 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3850 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3853 bool AteExtraComma = false;
3854 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3856 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3858 if (!EatIfPresent(lltok::comma))
3861 if (Lex.getKind() == lltok::MetadataVar) {
3862 AteExtraComma = true;
3866 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3867 ParseValue(Ty, Op0, PFS) ||
3868 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3869 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3870 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3874 if (!Ty->isFirstClassType())
3875 return Error(TypeLoc, "phi node must have first class type");
3877 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
3878 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3879 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3881 return AteExtraComma ? InstExtraComma : InstNormal;
3885 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
3887 /// ::= 'catch' TypeAndValue
3889 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
3890 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
3891 Type *Ty = 0; LocTy TyLoc;
3892 Value *PersFn; LocTy PersFnLoc;
3894 if (ParseType(Ty, TyLoc) ||
3895 ParseToken(lltok::kw_personality, "expected 'personality'") ||
3896 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
3899 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
3900 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
3902 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
3903 LandingPadInst::ClauseType CT;
3904 if (EatIfPresent(lltok::kw_catch))
3905 CT = LandingPadInst::Catch;
3906 else if (EatIfPresent(lltok::kw_filter))
3907 CT = LandingPadInst::Filter;
3909 return TokError("expected 'catch' or 'filter' clause type");
3911 Value *V; LocTy VLoc;
3912 if (ParseTypeAndValue(V, VLoc, PFS)) {
3917 // A 'catch' type expects a non-array constant. A filter clause expects an
3919 if (CT == LandingPadInst::Catch) {
3920 if (isa<ArrayType>(V->getType()))
3921 Error(VLoc, "'catch' clause has an invalid type");
3923 if (!isa<ArrayType>(V->getType()))
3924 Error(VLoc, "'filter' clause has an invalid type");
3935 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3936 /// ParameterList OptionalAttrs
3937 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3939 AttrBuilder RetAttrs, FnAttrs;
3940 std::vector<unsigned> FwdRefAttrGrps;
3946 SmallVector<ParamInfo, 16> ArgList;
3947 LocTy CallLoc = Lex.getLoc();
3949 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3950 ParseOptionalCallingConv(CC) ||
3951 ParseOptionalReturnAttrs(RetAttrs) ||
3952 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3953 ParseValID(CalleeID) ||
3954 ParseParameterList(ArgList, PFS) ||
3955 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3959 // If RetType is a non-function pointer type, then this is the short syntax
3960 // for the call, which means that RetType is just the return type. Infer the
3961 // rest of the function argument types from the arguments that are present.
3962 PointerType *PFTy = 0;
3963 FunctionType *Ty = 0;
3964 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3965 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3966 // Pull out the types of all of the arguments...
3967 std::vector<Type*> ParamTypes;
3968 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3969 ParamTypes.push_back(ArgList[i].V->getType());
3971 if (!FunctionType::isValidReturnType(RetType))
3972 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3974 Ty = FunctionType::get(RetType, ParamTypes, false);
3975 PFTy = PointerType::getUnqual(Ty);
3978 // Look up the callee.
3980 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3982 // Set up the Attribute for the function.
3983 SmallVector<AttributeSet, 8> Attrs;
3984 if (RetAttrs.hasAttributes())
3985 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3986 AttributeSet::ReturnIndex,
3989 SmallVector<Value*, 8> Args;
3991 // Loop through FunctionType's arguments and ensure they are specified
3992 // correctly. Also, gather any parameter attributes.
3993 FunctionType::param_iterator I = Ty->param_begin();
3994 FunctionType::param_iterator E = Ty->param_end();
3995 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3996 Type *ExpectedTy = 0;
3999 } else if (!Ty->isVarArg()) {
4000 return Error(ArgList[i].Loc, "too many arguments specified");
4003 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
4004 return Error(ArgList[i].Loc, "argument is not of expected type '" +
4005 getTypeString(ExpectedTy) + "'");
4006 Args.push_back(ArgList[i].V);
4007 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4008 AttrBuilder B(ArgList[i].Attrs, i + 1);
4009 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4014 return Error(CallLoc, "not enough parameters specified for call");
4016 if (FnAttrs.hasAttributes())
4017 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4018 AttributeSet::FunctionIndex,
4021 // Finish off the Attribute and check them
4022 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4024 CallInst *CI = CallInst::Create(Callee, Args);
4025 CI->setTailCall(isTail);
4026 CI->setCallingConv(CC);
4027 CI->setAttributes(PAL);
4028 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
4033 //===----------------------------------------------------------------------===//
4034 // Memory Instructions.
4035 //===----------------------------------------------------------------------===//
4038 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
4039 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
4042 unsigned Alignment = 0;
4044 if (ParseType(Ty)) return true;
4046 bool AteExtraComma = false;
4047 if (EatIfPresent(lltok::comma)) {
4048 if (Lex.getKind() == lltok::kw_align) {
4049 if (ParseOptionalAlignment(Alignment)) return true;
4050 } else if (Lex.getKind() == lltok::MetadataVar) {
4051 AteExtraComma = true;
4053 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
4054 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4059 if (Size && !Size->getType()->isIntegerTy())
4060 return Error(SizeLoc, "element count must have integer type");
4062 Inst = new AllocaInst(Ty, Size, Alignment);
4063 return AteExtraComma ? InstExtraComma : InstNormal;
4067 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
4068 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
4069 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4070 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
4071 Value *Val; LocTy Loc;
4072 unsigned Alignment = 0;
4073 bool AteExtraComma = false;
4074 bool isAtomic = false;
4075 AtomicOrdering Ordering = NotAtomic;
4076 SynchronizationScope Scope = CrossThread;
4078 if (Lex.getKind() == lltok::kw_atomic) {
4083 bool isVolatile = false;
4084 if (Lex.getKind() == lltok::kw_volatile) {
4089 if (ParseTypeAndValue(Val, Loc, PFS) ||
4090 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4091 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4094 if (!Val->getType()->isPointerTy() ||
4095 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
4096 return Error(Loc, "load operand must be a pointer to a first class type");
4097 if (isAtomic && !Alignment)
4098 return Error(Loc, "atomic load must have explicit non-zero alignment");
4099 if (Ordering == Release || Ordering == AcquireRelease)
4100 return Error(Loc, "atomic load cannot use Release ordering");
4102 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
4103 return AteExtraComma ? InstExtraComma : InstNormal;
4108 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
4109 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
4110 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4111 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
4112 Value *Val, *Ptr; LocTy Loc, PtrLoc;
4113 unsigned Alignment = 0;
4114 bool AteExtraComma = false;
4115 bool isAtomic = false;
4116 AtomicOrdering Ordering = NotAtomic;
4117 SynchronizationScope Scope = CrossThread;
4119 if (Lex.getKind() == lltok::kw_atomic) {
4124 bool isVolatile = false;
4125 if (Lex.getKind() == lltok::kw_volatile) {
4130 if (ParseTypeAndValue(Val, Loc, PFS) ||
4131 ParseToken(lltok::comma, "expected ',' after store operand") ||
4132 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4133 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4134 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4137 if (!Ptr->getType()->isPointerTy())
4138 return Error(PtrLoc, "store operand must be a pointer");
4139 if (!Val->getType()->isFirstClassType())
4140 return Error(Loc, "store operand must be a first class value");
4141 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4142 return Error(Loc, "stored value and pointer type do not match");
4143 if (isAtomic && !Alignment)
4144 return Error(Loc, "atomic store must have explicit non-zero alignment");
4145 if (Ordering == Acquire || Ordering == AcquireRelease)
4146 return Error(Loc, "atomic store cannot use Acquire ordering");
4148 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
4149 return AteExtraComma ? InstExtraComma : InstNormal;
4153 /// ::= 'cmpxchg' 'volatile'? TypeAndValue ',' TypeAndValue ',' TypeAndValue
4154 /// 'singlethread'? AtomicOrdering
4155 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
4156 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
4157 bool AteExtraComma = false;
4158 AtomicOrdering Ordering = NotAtomic;
4159 SynchronizationScope Scope = CrossThread;
4160 bool isVolatile = false;
4162 if (EatIfPresent(lltok::kw_volatile))
4165 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4166 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
4167 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
4168 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
4169 ParseTypeAndValue(New, NewLoc, PFS) ||
4170 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4173 if (Ordering == Unordered)
4174 return TokError("cmpxchg cannot be unordered");
4175 if (!Ptr->getType()->isPointerTy())
4176 return Error(PtrLoc, "cmpxchg operand must be a pointer");
4177 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
4178 return Error(CmpLoc, "compare value and pointer type do not match");
4179 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
4180 return Error(NewLoc, "new value and pointer type do not match");
4181 if (!New->getType()->isIntegerTy())
4182 return Error(NewLoc, "cmpxchg operand must be an integer");
4183 unsigned Size = New->getType()->getPrimitiveSizeInBits();
4184 if (Size < 8 || (Size & (Size - 1)))
4185 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
4188 AtomicCmpXchgInst *CXI =
4189 new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, Scope);
4190 CXI->setVolatile(isVolatile);
4192 return AteExtraComma ? InstExtraComma : InstNormal;
4196 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
4197 /// 'singlethread'? AtomicOrdering
4198 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
4199 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
4200 bool AteExtraComma = false;
4201 AtomicOrdering Ordering = NotAtomic;
4202 SynchronizationScope Scope = CrossThread;
4203 bool isVolatile = false;
4204 AtomicRMWInst::BinOp Operation;
4206 if (EatIfPresent(lltok::kw_volatile))
4209 switch (Lex.getKind()) {
4210 default: return TokError("expected binary operation in atomicrmw");
4211 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
4212 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
4213 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
4214 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
4215 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
4216 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
4217 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
4218 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
4219 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
4220 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
4221 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
4223 Lex.Lex(); // Eat the operation.
4225 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4226 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
4227 ParseTypeAndValue(Val, ValLoc, PFS) ||
4228 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4231 if (Ordering == Unordered)
4232 return TokError("atomicrmw cannot be unordered");
4233 if (!Ptr->getType()->isPointerTy())
4234 return Error(PtrLoc, "atomicrmw operand must be a pointer");
4235 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4236 return Error(ValLoc, "atomicrmw value and pointer type do not match");
4237 if (!Val->getType()->isIntegerTy())
4238 return Error(ValLoc, "atomicrmw operand must be an integer");
4239 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
4240 if (Size < 8 || (Size & (Size - 1)))
4241 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
4244 AtomicRMWInst *RMWI =
4245 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
4246 RMWI->setVolatile(isVolatile);
4248 return AteExtraComma ? InstExtraComma : InstNormal;
4252 /// ::= 'fence' 'singlethread'? AtomicOrdering
4253 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
4254 AtomicOrdering Ordering = NotAtomic;
4255 SynchronizationScope Scope = CrossThread;
4256 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4259 if (Ordering == Unordered)
4260 return TokError("fence cannot be unordered");
4261 if (Ordering == Monotonic)
4262 return TokError("fence cannot be monotonic");
4264 Inst = new FenceInst(Context, Ordering, Scope);
4268 /// ParseGetElementPtr
4269 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
4270 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
4275 bool InBounds = EatIfPresent(lltok::kw_inbounds);
4277 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4279 Type *BaseType = Ptr->getType();
4280 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
4281 if (!BasePointerType)
4282 return Error(Loc, "base of getelementptr must be a pointer");
4284 SmallVector<Value*, 16> Indices;
4285 bool AteExtraComma = false;
4286 while (EatIfPresent(lltok::comma)) {
4287 if (Lex.getKind() == lltok::MetadataVar) {
4288 AteExtraComma = true;
4291 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4292 if (!Val->getType()->getScalarType()->isIntegerTy())
4293 return Error(EltLoc, "getelementptr index must be an integer");
4294 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4295 return Error(EltLoc, "getelementptr index type missmatch");
4296 if (Val->getType()->isVectorTy()) {
4297 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4298 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4299 if (ValNumEl != PtrNumEl)
4300 return Error(EltLoc,
4301 "getelementptr vector index has a wrong number of elements");
4303 Indices.push_back(Val);
4306 if (!Indices.empty() && !BasePointerType->getElementType()->isSized())
4307 return Error(Loc, "base element of getelementptr must be sized");
4309 if (!GetElementPtrInst::getIndexedType(BaseType, Indices))
4310 return Error(Loc, "invalid getelementptr indices");
4311 Inst = GetElementPtrInst::Create(Ptr, Indices);
4313 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4314 return AteExtraComma ? InstExtraComma : InstNormal;
4317 /// ParseExtractValue
4318 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4319 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4320 Value *Val; LocTy Loc;
4321 SmallVector<unsigned, 4> Indices;
4323 if (ParseTypeAndValue(Val, Loc, PFS) ||
4324 ParseIndexList(Indices, AteExtraComma))
4327 if (!Val->getType()->isAggregateType())
4328 return Error(Loc, "extractvalue operand must be aggregate type");
4330 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4331 return Error(Loc, "invalid indices for extractvalue");
4332 Inst = ExtractValueInst::Create(Val, Indices);
4333 return AteExtraComma ? InstExtraComma : InstNormal;
4336 /// ParseInsertValue
4337 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4338 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4339 Value *Val0, *Val1; LocTy Loc0, Loc1;
4340 SmallVector<unsigned, 4> Indices;
4342 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4343 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4344 ParseTypeAndValue(Val1, Loc1, PFS) ||
4345 ParseIndexList(Indices, AteExtraComma))
4348 if (!Val0->getType()->isAggregateType())
4349 return Error(Loc0, "insertvalue operand must be aggregate type");
4351 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4352 return Error(Loc0, "invalid indices for insertvalue");
4353 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4354 return AteExtraComma ? InstExtraComma : InstNormal;
4357 //===----------------------------------------------------------------------===//
4358 // Embedded metadata.
4359 //===----------------------------------------------------------------------===//
4361 /// ParseMDNodeVector
4362 /// ::= Element (',' Element)*
4364 /// ::= 'null' | TypeAndValue
4365 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4366 PerFunctionState *PFS) {
4367 // Check for an empty list.
4368 if (Lex.getKind() == lltok::rbrace)
4372 // Null is a special case since it is typeless.
4373 if (EatIfPresent(lltok::kw_null)) {
4379 if (ParseTypeAndValue(V, PFS)) return true;
4381 } while (EatIfPresent(lltok::comma));