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/Module.h"
23 #include "llvm/IR/Operator.h"
24 #include "llvm/IR/ValueSymbolTable.h"
25 #include "llvm/Support/ErrorHandling.h"
26 #include "llvm/Support/raw_ostream.h"
29 static std::string getTypeString(Type *T) {
31 raw_string_ostream Tmp(Result);
36 /// Run: module ::= toplevelentity*
37 bool LLParser::Run() {
41 return ParseTopLevelEntities() ||
42 ValidateEndOfModule();
45 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
47 bool LLParser::ValidateEndOfModule() {
48 // Handle any instruction metadata forward references.
49 if (!ForwardRefInstMetadata.empty()) {
50 for (DenseMap<Instruction*, std::vector<MDRef> >::iterator
51 I = ForwardRefInstMetadata.begin(), E = ForwardRefInstMetadata.end();
53 Instruction *Inst = I->first;
54 const std::vector<MDRef> &MDList = I->second;
56 for (unsigned i = 0, e = MDList.size(); i != e; ++i) {
57 unsigned SlotNo = MDList[i].MDSlot;
59 if (SlotNo >= NumberedMetadata.size() || NumberedMetadata[SlotNo] == 0)
60 return Error(MDList[i].Loc, "use of undefined metadata '!" +
62 Inst->setMetadata(MDList[i].MDKind, NumberedMetadata[SlotNo]);
65 ForwardRefInstMetadata.clear();
68 // Handle any function attribute group forward references.
69 for (std::map<Value*, std::vector<unsigned> >::iterator
70 I = ForwardRefAttrGroups.begin(), E = ForwardRefAttrGroups.end();
73 std::vector<unsigned> &Vec = I->second;
76 for (std::vector<unsigned>::iterator VI = Vec.begin(), VE = Vec.end();
78 B.merge(NumberedAttrBuilders[*VI]);
80 if (Function *Fn = dyn_cast<Function>(V)) {
81 AttributeSet AS = Fn->getAttributes();
82 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
83 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
84 AS.getFnAttributes());
88 // If the alignment was parsed as an attribute, move to the alignment
90 if (FnAttrs.hasAlignmentAttr()) {
91 Fn->setAlignment(FnAttrs.getAlignment());
92 FnAttrs.removeAttribute(Attribute::Alignment);
95 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
96 AttributeSet::get(Context,
97 AttributeSet::FunctionIndex,
99 Fn->setAttributes(AS);
100 } else if (CallInst *CI = dyn_cast<CallInst>(V)) {
101 AttributeSet AS = CI->getAttributes();
102 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
103 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
104 AS.getFnAttributes());
106 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
107 AttributeSet::get(Context,
108 AttributeSet::FunctionIndex,
110 CI->setAttributes(AS);
111 } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
112 AttributeSet AS = II->getAttributes();
113 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
114 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
115 AS.getFnAttributes());
117 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
118 AttributeSet::get(Context,
119 AttributeSet::FunctionIndex,
121 II->setAttributes(AS);
123 llvm_unreachable("invalid object with forward attribute group reference");
127 // If there are entries in ForwardRefBlockAddresses at this point, they are
128 // references after the function was defined. Resolve those now.
129 while (!ForwardRefBlockAddresses.empty()) {
130 // Okay, we are referencing an already-parsed function, resolve them now.
132 const ValID &Fn = ForwardRefBlockAddresses.begin()->first;
133 if (Fn.Kind == ValID::t_GlobalName)
134 TheFn = M->getFunction(Fn.StrVal);
135 else if (Fn.UIntVal < NumberedVals.size())
136 TheFn = dyn_cast<Function>(NumberedVals[Fn.UIntVal]);
139 return Error(Fn.Loc, "unknown function referenced by blockaddress");
141 // Resolve all these references.
142 if (ResolveForwardRefBlockAddresses(TheFn,
143 ForwardRefBlockAddresses.begin()->second,
147 ForwardRefBlockAddresses.erase(ForwardRefBlockAddresses.begin());
150 for (unsigned i = 0, e = NumberedTypes.size(); i != e; ++i)
151 if (NumberedTypes[i].second.isValid())
152 return Error(NumberedTypes[i].second,
153 "use of undefined type '%" + Twine(i) + "'");
155 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
156 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
157 if (I->second.second.isValid())
158 return Error(I->second.second,
159 "use of undefined type named '" + I->getKey() + "'");
161 if (!ForwardRefVals.empty())
162 return Error(ForwardRefVals.begin()->second.second,
163 "use of undefined value '@" + ForwardRefVals.begin()->first +
166 if (!ForwardRefValIDs.empty())
167 return Error(ForwardRefValIDs.begin()->second.second,
168 "use of undefined value '@" +
169 Twine(ForwardRefValIDs.begin()->first) + "'");
171 if (!ForwardRefMDNodes.empty())
172 return Error(ForwardRefMDNodes.begin()->second.second,
173 "use of undefined metadata '!" +
174 Twine(ForwardRefMDNodes.begin()->first) + "'");
177 // Look for intrinsic functions and CallInst that need to be upgraded
178 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
179 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
184 bool LLParser::ResolveForwardRefBlockAddresses(Function *TheFn,
185 std::vector<std::pair<ValID, GlobalValue*> > &Refs,
186 PerFunctionState *PFS) {
187 // Loop over all the references, resolving them.
188 for (unsigned i = 0, e = Refs.size(); i != e; ++i) {
191 if (Refs[i].first.Kind == ValID::t_LocalName)
192 Res = PFS->GetBB(Refs[i].first.StrVal, Refs[i].first.Loc);
194 Res = PFS->GetBB(Refs[i].first.UIntVal, Refs[i].first.Loc);
195 } else if (Refs[i].first.Kind == ValID::t_LocalID) {
196 return Error(Refs[i].first.Loc,
197 "cannot take address of numeric label after the function is defined");
199 Res = dyn_cast_or_null<BasicBlock>(
200 TheFn->getValueSymbolTable().lookup(Refs[i].first.StrVal));
204 return Error(Refs[i].first.Loc,
205 "referenced value is not a basic block");
207 // Get the BlockAddress for this and update references to use it.
208 BlockAddress *BA = BlockAddress::get(TheFn, Res);
209 Refs[i].second->replaceAllUsesWith(BA);
210 Refs[i].second->eraseFromParent();
216 //===----------------------------------------------------------------------===//
217 // Top-Level Entities
218 //===----------------------------------------------------------------------===//
220 bool LLParser::ParseTopLevelEntities() {
222 switch (Lex.getKind()) {
223 default: return TokError("expected top-level entity");
224 case lltok::Eof: return false;
225 case lltok::kw_declare: if (ParseDeclare()) return true; break;
226 case lltok::kw_define: if (ParseDefine()) return true; break;
227 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
228 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
229 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
230 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
231 case lltok::LocalVar: if (ParseNamedType()) return true; break;
232 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
233 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
234 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
235 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
237 // The Global variable production with no name can have many different
238 // optional leading prefixes, the production is:
239 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
240 // OptionalAddrSpace OptionalUnNammedAddr
241 // ('constant'|'global') ...
242 case lltok::kw_private: // OptionalLinkage
243 case lltok::kw_linker_private: // OptionalLinkage
244 case lltok::kw_linker_private_weak: // OptionalLinkage
245 case lltok::kw_linker_private_weak_def_auto: // FIXME: backwards compat.
246 case lltok::kw_internal: // OptionalLinkage
247 case lltok::kw_weak: // OptionalLinkage
248 case lltok::kw_weak_odr: // OptionalLinkage
249 case lltok::kw_linkonce: // OptionalLinkage
250 case lltok::kw_linkonce_odr: // OptionalLinkage
251 case lltok::kw_linkonce_odr_auto_hide: // OptionalLinkage
252 case lltok::kw_appending: // OptionalLinkage
253 case lltok::kw_dllexport: // OptionalLinkage
254 case lltok::kw_common: // OptionalLinkage
255 case lltok::kw_dllimport: // OptionalLinkage
256 case lltok::kw_extern_weak: // OptionalLinkage
257 case lltok::kw_external: { // OptionalLinkage
258 unsigned Linkage, Visibility;
259 if (ParseOptionalLinkage(Linkage) ||
260 ParseOptionalVisibility(Visibility) ||
261 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
265 case lltok::kw_default: // OptionalVisibility
266 case lltok::kw_hidden: // OptionalVisibility
267 case lltok::kw_protected: { // OptionalVisibility
269 if (ParseOptionalVisibility(Visibility) ||
270 ParseGlobal("", SMLoc(), 0, false, Visibility))
275 case lltok::kw_thread_local: // OptionalThreadLocal
276 case lltok::kw_addrspace: // OptionalAddrSpace
277 case lltok::kw_constant: // GlobalType
278 case lltok::kw_global: // GlobalType
279 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
282 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
289 /// ::= 'module' 'asm' STRINGCONSTANT
290 bool LLParser::ParseModuleAsm() {
291 assert(Lex.getKind() == lltok::kw_module);
295 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
296 ParseStringConstant(AsmStr)) return true;
298 M->appendModuleInlineAsm(AsmStr);
303 /// ::= 'target' 'triple' '=' STRINGCONSTANT
304 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
305 bool LLParser::ParseTargetDefinition() {
306 assert(Lex.getKind() == lltok::kw_target);
309 default: return TokError("unknown target property");
310 case lltok::kw_triple:
312 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
313 ParseStringConstant(Str))
315 M->setTargetTriple(Str);
317 case lltok::kw_datalayout:
319 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
320 ParseStringConstant(Str))
322 M->setDataLayout(Str);
328 /// ::= 'deplibs' '=' '[' ']'
329 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
330 /// FIXME: Remove in 4.0. Currently parse, but ignore.
331 bool LLParser::ParseDepLibs() {
332 assert(Lex.getKind() == lltok::kw_deplibs);
334 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
335 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
338 if (EatIfPresent(lltok::rsquare))
343 if (ParseStringConstant(Str)) return true;
344 } while (EatIfPresent(lltok::comma));
346 return ParseToken(lltok::rsquare, "expected ']' at end of list");
349 /// ParseUnnamedType:
350 /// ::= LocalVarID '=' 'type' type
351 bool LLParser::ParseUnnamedType() {
352 LocTy TypeLoc = Lex.getLoc();
353 unsigned TypeID = Lex.getUIntVal();
354 Lex.Lex(); // eat LocalVarID;
356 if (ParseToken(lltok::equal, "expected '=' after name") ||
357 ParseToken(lltok::kw_type, "expected 'type' after '='"))
360 if (TypeID >= NumberedTypes.size())
361 NumberedTypes.resize(TypeID+1);
364 if (ParseStructDefinition(TypeLoc, "",
365 NumberedTypes[TypeID], Result)) return true;
367 if (!isa<StructType>(Result)) {
368 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
370 return Error(TypeLoc, "non-struct types may not be recursive");
371 Entry.first = Result;
372 Entry.second = SMLoc();
380 /// ::= LocalVar '=' 'type' type
381 bool LLParser::ParseNamedType() {
382 std::string Name = Lex.getStrVal();
383 LocTy NameLoc = Lex.getLoc();
384 Lex.Lex(); // eat LocalVar.
386 if (ParseToken(lltok::equal, "expected '=' after name") ||
387 ParseToken(lltok::kw_type, "expected 'type' after name"))
391 if (ParseStructDefinition(NameLoc, Name,
392 NamedTypes[Name], Result)) return true;
394 if (!isa<StructType>(Result)) {
395 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
397 return Error(NameLoc, "non-struct types may not be recursive");
398 Entry.first = Result;
399 Entry.second = SMLoc();
407 /// ::= 'declare' FunctionHeader
408 bool LLParser::ParseDeclare() {
409 assert(Lex.getKind() == lltok::kw_declare);
413 return ParseFunctionHeader(F, false);
417 /// ::= 'define' FunctionHeader '{' ...
418 bool LLParser::ParseDefine() {
419 assert(Lex.getKind() == lltok::kw_define);
423 return ParseFunctionHeader(F, true) ||
424 ParseFunctionBody(*F);
430 bool LLParser::ParseGlobalType(bool &IsConstant) {
431 if (Lex.getKind() == lltok::kw_constant)
433 else if (Lex.getKind() == lltok::kw_global)
437 return TokError("expected 'global' or 'constant'");
443 /// ParseUnnamedGlobal:
444 /// OptionalVisibility ALIAS ...
445 /// OptionalLinkage OptionalVisibility ... -> global variable
446 /// GlobalID '=' OptionalVisibility ALIAS ...
447 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
448 bool LLParser::ParseUnnamedGlobal() {
449 unsigned VarID = NumberedVals.size();
451 LocTy NameLoc = Lex.getLoc();
453 // Handle the GlobalID form.
454 if (Lex.getKind() == lltok::GlobalID) {
455 if (Lex.getUIntVal() != VarID)
456 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
458 Lex.Lex(); // eat GlobalID;
460 if (ParseToken(lltok::equal, "expected '=' after name"))
465 unsigned Linkage, Visibility;
466 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
467 ParseOptionalVisibility(Visibility))
470 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
471 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
472 return ParseAlias(Name, NameLoc, Visibility);
475 /// ParseNamedGlobal:
476 /// GlobalVar '=' OptionalVisibility ALIAS ...
477 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
478 bool LLParser::ParseNamedGlobal() {
479 assert(Lex.getKind() == lltok::GlobalVar);
480 LocTy NameLoc = Lex.getLoc();
481 std::string Name = Lex.getStrVal();
485 unsigned Linkage, Visibility;
486 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
487 ParseOptionalLinkage(Linkage, HasLinkage) ||
488 ParseOptionalVisibility(Visibility))
491 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
492 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
493 return ParseAlias(Name, NameLoc, Visibility);
497 // ::= '!' STRINGCONSTANT
498 bool LLParser::ParseMDString(MDString *&Result) {
500 if (ParseStringConstant(Str)) return true;
501 Result = MDString::get(Context, Str);
506 // ::= '!' MDNodeNumber
508 /// This version of ParseMDNodeID returns the slot number and null in the case
509 /// of a forward reference.
510 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
511 // !{ ..., !42, ... }
512 if (ParseUInt32(SlotNo)) return true;
514 // Check existing MDNode.
515 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != 0)
516 Result = NumberedMetadata[SlotNo];
522 bool LLParser::ParseMDNodeID(MDNode *&Result) {
523 // !{ ..., !42, ... }
525 if (ParseMDNodeID(Result, MID)) return true;
527 // If not a forward reference, just return it now.
528 if (Result) return false;
530 // Otherwise, create MDNode forward reference.
531 MDNode *FwdNode = MDNode::getTemporary(Context, ArrayRef<Value*>());
532 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
534 if (NumberedMetadata.size() <= MID)
535 NumberedMetadata.resize(MID+1);
536 NumberedMetadata[MID] = FwdNode;
541 /// ParseNamedMetadata:
542 /// !foo = !{ !1, !2 }
543 bool LLParser::ParseNamedMetadata() {
544 assert(Lex.getKind() == lltok::MetadataVar);
545 std::string Name = Lex.getStrVal();
548 if (ParseToken(lltok::equal, "expected '=' here") ||
549 ParseToken(lltok::exclaim, "Expected '!' here") ||
550 ParseToken(lltok::lbrace, "Expected '{' here"))
553 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
554 if (Lex.getKind() != lltok::rbrace)
556 if (ParseToken(lltok::exclaim, "Expected '!' here"))
560 if (ParseMDNodeID(N)) return true;
562 } while (EatIfPresent(lltok::comma));
564 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
570 /// ParseStandaloneMetadata:
572 bool LLParser::ParseStandaloneMetadata() {
573 assert(Lex.getKind() == lltok::exclaim);
575 unsigned MetadataID = 0;
579 SmallVector<Value *, 16> Elts;
580 if (ParseUInt32(MetadataID) ||
581 ParseToken(lltok::equal, "expected '=' here") ||
582 ParseType(Ty, TyLoc) ||
583 ParseToken(lltok::exclaim, "Expected '!' here") ||
584 ParseToken(lltok::lbrace, "Expected '{' here") ||
585 ParseMDNodeVector(Elts, NULL) ||
586 ParseToken(lltok::rbrace, "expected end of metadata node"))
589 MDNode *Init = MDNode::get(Context, Elts);
591 // See if this was forward referenced, if so, handle it.
592 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
593 FI = ForwardRefMDNodes.find(MetadataID);
594 if (FI != ForwardRefMDNodes.end()) {
595 MDNode *Temp = FI->second.first;
596 Temp->replaceAllUsesWith(Init);
597 MDNode::deleteTemporary(Temp);
598 ForwardRefMDNodes.erase(FI);
600 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
602 if (MetadataID >= NumberedMetadata.size())
603 NumberedMetadata.resize(MetadataID+1);
605 if (NumberedMetadata[MetadataID] != 0)
606 return TokError("Metadata id is already used");
607 NumberedMetadata[MetadataID] = Init;
614 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
617 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
618 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
620 /// Everything through visibility has already been parsed.
622 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
623 unsigned Visibility) {
624 assert(Lex.getKind() == lltok::kw_alias);
627 LocTy LinkageLoc = Lex.getLoc();
628 if (ParseOptionalLinkage(Linkage))
631 if (Linkage != GlobalValue::ExternalLinkage &&
632 Linkage != GlobalValue::WeakAnyLinkage &&
633 Linkage != GlobalValue::WeakODRLinkage &&
634 Linkage != GlobalValue::InternalLinkage &&
635 Linkage != GlobalValue::PrivateLinkage &&
636 Linkage != GlobalValue::LinkerPrivateLinkage &&
637 Linkage != GlobalValue::LinkerPrivateWeakLinkage)
638 return Error(LinkageLoc, "invalid linkage type for alias");
641 LocTy AliaseeLoc = Lex.getLoc();
642 if (Lex.getKind() != lltok::kw_bitcast &&
643 Lex.getKind() != lltok::kw_getelementptr) {
644 if (ParseGlobalTypeAndValue(Aliasee)) return true;
646 // The bitcast dest type is not present, it is implied by the dest type.
648 if (ParseValID(ID)) return true;
649 if (ID.Kind != ValID::t_Constant)
650 return Error(AliaseeLoc, "invalid aliasee");
651 Aliasee = ID.ConstantVal;
654 if (!Aliasee->getType()->isPointerTy())
655 return Error(AliaseeLoc, "alias must have pointer type");
657 // Okay, create the alias but do not insert it into the module yet.
658 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
659 (GlobalValue::LinkageTypes)Linkage, Name,
661 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
663 // See if this value already exists in the symbol table. If so, it is either
664 // a redefinition or a definition of a forward reference.
665 if (GlobalValue *Val = M->getNamedValue(Name)) {
666 // See if this was a redefinition. If so, there is no entry in
668 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
669 I = ForwardRefVals.find(Name);
670 if (I == ForwardRefVals.end())
671 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
673 // Otherwise, this was a definition of forward ref. Verify that types
675 if (Val->getType() != GA->getType())
676 return Error(NameLoc,
677 "forward reference and definition of alias have different types");
679 // If they agree, just RAUW the old value with the alias and remove the
681 Val->replaceAllUsesWith(GA);
682 Val->eraseFromParent();
683 ForwardRefVals.erase(I);
686 // Insert into the module, we know its name won't collide now.
687 M->getAliasList().push_back(GA);
688 assert(GA->getName() == Name && "Should not be a name conflict!");
694 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
695 /// OptionalAddrSpace OptionalUnNammedAddr
696 /// OptionalExternallyInitialized GlobalType Type Const
697 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
698 /// OptionalAddrSpace OptionalUnNammedAddr
699 /// OptionalExternallyInitialized GlobalType Type Const
701 /// Everything through visibility has been parsed already.
703 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
704 unsigned Linkage, bool HasLinkage,
705 unsigned Visibility) {
707 bool IsConstant, UnnamedAddr, IsExternallyInitialized;
708 GlobalVariable::ThreadLocalMode TLM;
709 LocTy UnnamedAddrLoc;
710 LocTy IsExternallyInitializedLoc;
714 if (ParseOptionalThreadLocal(TLM) ||
715 ParseOptionalAddrSpace(AddrSpace) ||
716 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
718 ParseOptionalToken(lltok::kw_externally_initialized,
719 IsExternallyInitialized,
720 &IsExternallyInitializedLoc) ||
721 ParseGlobalType(IsConstant) ||
722 ParseType(Ty, TyLoc))
725 // If the linkage is specified and is external, then no initializer is
728 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
729 Linkage != GlobalValue::ExternalWeakLinkage &&
730 Linkage != GlobalValue::ExternalLinkage)) {
731 if (ParseGlobalValue(Ty, Init))
735 if (Ty->isFunctionTy() || Ty->isLabelTy())
736 return Error(TyLoc, "invalid type for global variable");
738 GlobalVariable *GV = 0;
740 // See if the global was forward referenced, if so, use the global.
742 if (GlobalValue *GVal = M->getNamedValue(Name)) {
743 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
744 return Error(NameLoc, "redefinition of global '@" + Name + "'");
745 GV = cast<GlobalVariable>(GVal);
748 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
749 I = ForwardRefValIDs.find(NumberedVals.size());
750 if (I != ForwardRefValIDs.end()) {
751 GV = cast<GlobalVariable>(I->second.first);
752 ForwardRefValIDs.erase(I);
757 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
758 Name, 0, GlobalVariable::NotThreadLocal,
761 if (GV->getType()->getElementType() != Ty)
763 "forward reference and definition of global have different types");
765 // Move the forward-reference to the correct spot in the module.
766 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
770 NumberedVals.push_back(GV);
772 // Set the parsed properties on the global.
774 GV->setInitializer(Init);
775 GV->setConstant(IsConstant);
776 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
777 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
778 GV->setExternallyInitialized(IsExternallyInitialized);
779 GV->setThreadLocalMode(TLM);
780 GV->setUnnamedAddr(UnnamedAddr);
782 // Parse attributes on the global.
783 while (Lex.getKind() == lltok::comma) {
786 if (Lex.getKind() == lltok::kw_section) {
788 GV->setSection(Lex.getStrVal());
789 if (ParseToken(lltok::StringConstant, "expected global section string"))
791 } else if (Lex.getKind() == lltok::kw_align) {
793 if (ParseOptionalAlignment(Alignment)) return true;
794 GV->setAlignment(Alignment);
796 TokError("unknown global variable property!");
803 /// ParseUnnamedAttrGrp
804 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
805 bool LLParser::ParseUnnamedAttrGrp() {
806 assert(Lex.getKind() == lltok::kw_attributes);
807 LocTy AttrGrpLoc = Lex.getLoc();
810 assert(Lex.getKind() == lltok::AttrGrpID);
811 unsigned VarID = Lex.getUIntVal();
812 std::vector<unsigned> unused;
816 if (ParseToken(lltok::equal, "expected '=' here") ||
817 ParseToken(lltok::lbrace, "expected '{' here") ||
818 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
820 ParseToken(lltok::rbrace, "expected end of attribute group"))
823 if (!NumberedAttrBuilders[VarID].hasAttributes())
824 return Error(AttrGrpLoc, "attribute group has no attributes");
829 /// ParseFnAttributeValuePairs
830 /// ::= <attr> | <attr> '=' <value>
831 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
832 std::vector<unsigned> &FwdRefAttrGrps,
833 bool inAttrGrp, LocTy &NoBuiltinLoc) {
834 bool HaveError = false;
839 lltok::Kind Token = Lex.getKind();
840 if (Token == lltok::kw_nobuiltin)
841 NoBuiltinLoc = Lex.getLoc();
844 if (!inAttrGrp) return HaveError;
845 return Error(Lex.getLoc(), "unterminated attribute group");
850 case lltok::AttrGrpID: {
851 // Allow a function to reference an attribute group:
853 // define void @foo() #1 { ... }
857 "cannot have an attribute group reference in an attribute group");
859 unsigned AttrGrpNum = Lex.getUIntVal();
860 if (inAttrGrp) break;
862 // Save the reference to the attribute group. We'll fill it in later.
863 FwdRefAttrGrps.push_back(AttrGrpNum);
866 // Target-dependent attributes:
867 case lltok::StringConstant: {
868 std::string Attr = Lex.getStrVal();
871 if (EatIfPresent(lltok::equal) &&
872 ParseStringConstant(Val))
875 B.addAttribute(Attr, Val);
879 // Target-independent attributes:
880 case lltok::kw_align: {
881 // As a hack, we allow "align 2" on functions as a synonym for "alignstack
886 if (ParseToken(lltok::equal, "expected '=' here") ||
887 ParseUInt32(Alignment))
890 if (ParseOptionalAlignment(Alignment))
893 B.addAlignmentAttr(Alignment);
896 case lltok::kw_alignstack: {
900 if (ParseToken(lltok::equal, "expected '=' here") ||
901 ParseUInt32(Alignment))
904 if (ParseOptionalStackAlignment(Alignment))
907 B.addStackAlignmentAttr(Alignment);
910 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
911 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
912 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
913 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
914 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
915 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
916 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
917 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
918 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
919 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
920 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
921 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
922 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
923 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
924 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
925 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
926 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
927 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
928 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
929 case lltok::kw_sanitize_address: B.addAttribute(Attribute::SanitizeAddress); break;
930 case lltok::kw_sanitize_thread: B.addAttribute(Attribute::SanitizeThread); break;
931 case lltok::kw_sanitize_memory: B.addAttribute(Attribute::SanitizeMemory); break;
932 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
935 case lltok::kw_inreg:
936 case lltok::kw_signext:
937 case lltok::kw_zeroext:
940 "invalid use of attribute on a function");
942 case lltok::kw_byval:
944 case lltok::kw_noalias:
945 case lltok::kw_nocapture:
949 "invalid use of parameter-only attribute on a function");
957 //===----------------------------------------------------------------------===//
958 // GlobalValue Reference/Resolution Routines.
959 //===----------------------------------------------------------------------===//
961 /// GetGlobalVal - Get a value with the specified name or ID, creating a
962 /// forward reference record if needed. This can return null if the value
963 /// exists but does not have the right type.
964 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
966 PointerType *PTy = dyn_cast<PointerType>(Ty);
968 Error(Loc, "global variable reference must have pointer type");
972 // Look this name up in the normal function symbol table.
974 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
976 // If this is a forward reference for the value, see if we already created a
977 // forward ref record.
979 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
980 I = ForwardRefVals.find(Name);
981 if (I != ForwardRefVals.end())
982 Val = I->second.first;
985 // If we have the value in the symbol table or fwd-ref table, return it.
987 if (Val->getType() == Ty) return Val;
988 Error(Loc, "'@" + Name + "' defined with type '" +
989 getTypeString(Val->getType()) + "'");
993 // Otherwise, create a new forward reference for this value and remember it.
995 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
996 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
998 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
999 GlobalValue::ExternalWeakLinkage, 0, Name,
1000 0, GlobalVariable::NotThreadLocal,
1001 PTy->getAddressSpace());
1003 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1007 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1008 PointerType *PTy = dyn_cast<PointerType>(Ty);
1010 Error(Loc, "global variable reference must have pointer type");
1014 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1016 // If this is a forward reference for the value, see if we already created a
1017 // forward ref record.
1019 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1020 I = ForwardRefValIDs.find(ID);
1021 if (I != ForwardRefValIDs.end())
1022 Val = I->second.first;
1025 // If we have the value in the symbol table or fwd-ref table, return it.
1027 if (Val->getType() == Ty) return Val;
1028 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1029 getTypeString(Val->getType()) + "'");
1033 // Otherwise, create a new forward reference for this value and remember it.
1034 GlobalValue *FwdVal;
1035 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1036 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1038 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1039 GlobalValue::ExternalWeakLinkage, 0, "");
1041 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1046 //===----------------------------------------------------------------------===//
1048 //===----------------------------------------------------------------------===//
1050 /// ParseToken - If the current token has the specified kind, eat it and return
1051 /// success. Otherwise, emit the specified error and return failure.
1052 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1053 if (Lex.getKind() != T)
1054 return TokError(ErrMsg);
1059 /// ParseStringConstant
1060 /// ::= StringConstant
1061 bool LLParser::ParseStringConstant(std::string &Result) {
1062 if (Lex.getKind() != lltok::StringConstant)
1063 return TokError("expected string constant");
1064 Result = Lex.getStrVal();
1071 bool LLParser::ParseUInt32(unsigned &Val) {
1072 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1073 return TokError("expected integer");
1074 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1075 if (Val64 != unsigned(Val64))
1076 return TokError("expected 32-bit integer (too large)");
1083 /// := 'localdynamic'
1084 /// := 'initialexec'
1086 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1087 switch (Lex.getKind()) {
1089 return TokError("expected localdynamic, initialexec or localexec");
1090 case lltok::kw_localdynamic:
1091 TLM = GlobalVariable::LocalDynamicTLSModel;
1093 case lltok::kw_initialexec:
1094 TLM = GlobalVariable::InitialExecTLSModel;
1096 case lltok::kw_localexec:
1097 TLM = GlobalVariable::LocalExecTLSModel;
1105 /// ParseOptionalThreadLocal
1107 /// := 'thread_local'
1108 /// := 'thread_local' '(' tlsmodel ')'
1109 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1110 TLM = GlobalVariable::NotThreadLocal;
1111 if (!EatIfPresent(lltok::kw_thread_local))
1114 TLM = GlobalVariable::GeneralDynamicTLSModel;
1115 if (Lex.getKind() == lltok::lparen) {
1117 return ParseTLSModel(TLM) ||
1118 ParseToken(lltok::rparen, "expected ')' after thread local model");
1123 /// ParseOptionalAddrSpace
1125 /// := 'addrspace' '(' uint32 ')'
1126 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1128 if (!EatIfPresent(lltok::kw_addrspace))
1130 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1131 ParseUInt32(AddrSpace) ||
1132 ParseToken(lltok::rparen, "expected ')' in address space");
1135 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1136 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1137 bool HaveError = false;
1142 lltok::Kind Token = Lex.getKind();
1144 default: // End of attributes.
1146 case lltok::kw_align: {
1148 if (ParseOptionalAlignment(Alignment))
1150 B.addAlignmentAttr(Alignment);
1153 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1154 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1155 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1156 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1157 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1158 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1159 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1160 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1162 case lltok::kw_alignstack: case lltok::kw_nounwind:
1163 case lltok::kw_alwaysinline: case lltok::kw_optsize:
1164 case lltok::kw_inlinehint: case lltok::kw_readnone:
1165 case lltok::kw_minsize: case lltok::kw_readonly:
1166 case lltok::kw_naked: case lltok::kw_returns_twice:
1167 case lltok::kw_nobuiltin: case lltok::kw_sanitize_address:
1168 case lltok::kw_noimplicitfloat: case lltok::kw_sanitize_memory:
1169 case lltok::kw_noinline: case lltok::kw_sanitize_thread:
1170 case lltok::kw_nonlazybind: case lltok::kw_ssp:
1171 case lltok::kw_noredzone: case lltok::kw_sspreq:
1172 case lltok::kw_noreturn: case lltok::kw_uwtable:
1173 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1181 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1182 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1183 bool HaveError = false;
1188 lltok::Kind Token = Lex.getKind();
1190 default: // End of attributes.
1192 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1193 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1194 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1195 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1198 case lltok::kw_sret: case lltok::kw_nocapture:
1199 case lltok::kw_byval: case lltok::kw_nest:
1200 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1203 case lltok::kw_align: case lltok::kw_noreturn:
1204 case lltok::kw_alignstack: case lltok::kw_nounwind:
1205 case lltok::kw_alwaysinline: case lltok::kw_optsize:
1206 case lltok::kw_inlinehint: case lltok::kw_readnone:
1207 case lltok::kw_minsize: case lltok::kw_readonly:
1208 case lltok::kw_naked: case lltok::kw_returns_twice:
1209 case lltok::kw_nobuiltin: case lltok::kw_sanitize_address:
1210 case lltok::kw_noduplicate: case lltok::kw_sanitize_memory:
1211 case lltok::kw_noimplicitfloat: case lltok::kw_sanitize_thread:
1212 case lltok::kw_noinline: case lltok::kw_ssp:
1213 case lltok::kw_nonlazybind: case lltok::kw_sspreq:
1214 case lltok::kw_noredzone: case lltok::kw_sspstrong:
1215 case lltok::kw_uwtable:
1216 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1224 /// ParseOptionalLinkage
1227 /// ::= 'linker_private'
1228 /// ::= 'linker_private_weak'
1233 /// ::= 'linkonce_odr'
1234 /// ::= 'linkonce_odr_auto_hide'
1235 /// ::= 'available_externally'
1240 /// ::= 'extern_weak'
1242 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1244 switch (Lex.getKind()) {
1245 default: Res=GlobalValue::ExternalLinkage; return false;
1246 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1247 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1248 case lltok::kw_linker_private_weak:
1249 Res = GlobalValue::LinkerPrivateWeakLinkage;
1251 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1252 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1253 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1254 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1255 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1256 case lltok::kw_linkonce_odr_auto_hide:
1257 case lltok::kw_linker_private_weak_def_auto: // FIXME: For backwards compat.
1258 Res = GlobalValue::LinkOnceODRAutoHideLinkage;
1260 case lltok::kw_available_externally:
1261 Res = GlobalValue::AvailableExternallyLinkage;
1263 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1264 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1265 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1266 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1267 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1268 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1275 /// ParseOptionalVisibility
1281 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1282 switch (Lex.getKind()) {
1283 default: Res = GlobalValue::DefaultVisibility; return false;
1284 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1285 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1286 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1292 /// ParseOptionalCallingConv
1296 /// ::= 'kw_intel_ocl_bicc'
1298 /// ::= 'x86_stdcallcc'
1299 /// ::= 'x86_fastcallcc'
1300 /// ::= 'x86_thiscallcc'
1301 /// ::= 'arm_apcscc'
1302 /// ::= 'arm_aapcscc'
1303 /// ::= 'arm_aapcs_vfpcc'
1304 /// ::= 'msp430_intrcc'
1305 /// ::= 'ptx_kernel'
1306 /// ::= 'ptx_device'
1308 /// ::= 'spir_kernel'
1311 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1312 switch (Lex.getKind()) {
1313 default: CC = CallingConv::C; return false;
1314 case lltok::kw_ccc: CC = CallingConv::C; break;
1315 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1316 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1317 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1318 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1319 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1320 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1321 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1322 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1323 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1324 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1325 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1326 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1327 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1328 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1329 case lltok::kw_cc: {
1330 unsigned ArbitraryCC;
1332 if (ParseUInt32(ArbitraryCC))
1334 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1343 /// ParseInstructionMetadata
1344 /// ::= !dbg !42 (',' !dbg !57)*
1345 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1346 PerFunctionState *PFS) {
1348 if (Lex.getKind() != lltok::MetadataVar)
1349 return TokError("expected metadata after comma");
1351 std::string Name = Lex.getStrVal();
1352 unsigned MDK = M->getMDKindID(Name);
1356 SMLoc Loc = Lex.getLoc();
1358 if (ParseToken(lltok::exclaim, "expected '!' here"))
1361 // This code is similar to that of ParseMetadataValue, however it needs to
1362 // have special-case code for a forward reference; see the comments on
1363 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1364 // at the top level here.
1365 if (Lex.getKind() == lltok::lbrace) {
1367 if (ParseMetadataListValue(ID, PFS))
1369 assert(ID.Kind == ValID::t_MDNode);
1370 Inst->setMetadata(MDK, ID.MDNodeVal);
1372 unsigned NodeID = 0;
1373 if (ParseMDNodeID(Node, NodeID))
1376 // If we got the node, add it to the instruction.
1377 Inst->setMetadata(MDK, Node);
1379 MDRef R = { Loc, MDK, NodeID };
1380 // Otherwise, remember that this should be resolved later.
1381 ForwardRefInstMetadata[Inst].push_back(R);
1385 // If this is the end of the list, we're done.
1386 } while (EatIfPresent(lltok::comma));
1390 /// ParseOptionalAlignment
1393 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1395 if (!EatIfPresent(lltok::kw_align))
1397 LocTy AlignLoc = Lex.getLoc();
1398 if (ParseUInt32(Alignment)) return true;
1399 if (!isPowerOf2_32(Alignment))
1400 return Error(AlignLoc, "alignment is not a power of two");
1401 if (Alignment > Value::MaximumAlignment)
1402 return Error(AlignLoc, "huge alignments are not supported yet");
1406 /// ParseOptionalCommaAlign
1410 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1412 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1413 bool &AteExtraComma) {
1414 AteExtraComma = false;
1415 while (EatIfPresent(lltok::comma)) {
1416 // Metadata at the end is an early exit.
1417 if (Lex.getKind() == lltok::MetadataVar) {
1418 AteExtraComma = true;
1422 if (Lex.getKind() != lltok::kw_align)
1423 return Error(Lex.getLoc(), "expected metadata or 'align'");
1425 if (ParseOptionalAlignment(Alignment)) return true;
1431 /// ParseScopeAndOrdering
1432 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1435 /// This sets Scope and Ordering to the parsed values.
1436 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1437 AtomicOrdering &Ordering) {
1441 Scope = CrossThread;
1442 if (EatIfPresent(lltok::kw_singlethread))
1443 Scope = SingleThread;
1444 switch (Lex.getKind()) {
1445 default: return TokError("Expected ordering on atomic instruction");
1446 case lltok::kw_unordered: Ordering = Unordered; break;
1447 case lltok::kw_monotonic: Ordering = Monotonic; break;
1448 case lltok::kw_acquire: Ordering = Acquire; break;
1449 case lltok::kw_release: Ordering = Release; break;
1450 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1451 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1457 /// ParseOptionalStackAlignment
1459 /// ::= 'alignstack' '(' 4 ')'
1460 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1462 if (!EatIfPresent(lltok::kw_alignstack))
1464 LocTy ParenLoc = Lex.getLoc();
1465 if (!EatIfPresent(lltok::lparen))
1466 return Error(ParenLoc, "expected '('");
1467 LocTy AlignLoc = Lex.getLoc();
1468 if (ParseUInt32(Alignment)) return true;
1469 ParenLoc = Lex.getLoc();
1470 if (!EatIfPresent(lltok::rparen))
1471 return Error(ParenLoc, "expected ')'");
1472 if (!isPowerOf2_32(Alignment))
1473 return Error(AlignLoc, "stack alignment is not a power of two");
1477 /// ParseIndexList - This parses the index list for an insert/extractvalue
1478 /// instruction. This sets AteExtraComma in the case where we eat an extra
1479 /// comma at the end of the line and find that it is followed by metadata.
1480 /// Clients that don't allow metadata can call the version of this function that
1481 /// only takes one argument.
1484 /// ::= (',' uint32)+
1486 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1487 bool &AteExtraComma) {
1488 AteExtraComma = false;
1490 if (Lex.getKind() != lltok::comma)
1491 return TokError("expected ',' as start of index list");
1493 while (EatIfPresent(lltok::comma)) {
1494 if (Lex.getKind() == lltok::MetadataVar) {
1495 AteExtraComma = true;
1499 if (ParseUInt32(Idx)) return true;
1500 Indices.push_back(Idx);
1506 //===----------------------------------------------------------------------===//
1508 //===----------------------------------------------------------------------===//
1510 /// ParseType - Parse a type.
1511 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1512 SMLoc TypeLoc = Lex.getLoc();
1513 switch (Lex.getKind()) {
1515 return TokError("expected type");
1517 // Type ::= 'float' | 'void' (etc)
1518 Result = Lex.getTyVal();
1522 // Type ::= StructType
1523 if (ParseAnonStructType(Result, false))
1526 case lltok::lsquare:
1527 // Type ::= '[' ... ']'
1528 Lex.Lex(); // eat the lsquare.
1529 if (ParseArrayVectorType(Result, false))
1532 case lltok::less: // Either vector or packed struct.
1533 // Type ::= '<' ... '>'
1535 if (Lex.getKind() == lltok::lbrace) {
1536 if (ParseAnonStructType(Result, true) ||
1537 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1539 } else if (ParseArrayVectorType(Result, true))
1542 case lltok::LocalVar: {
1544 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1546 // If the type hasn't been defined yet, create a forward definition and
1547 // remember where that forward def'n was seen (in case it never is defined).
1548 if (Entry.first == 0) {
1549 Entry.first = StructType::create(Context, Lex.getStrVal());
1550 Entry.second = Lex.getLoc();
1552 Result = Entry.first;
1557 case lltok::LocalVarID: {
1559 if (Lex.getUIntVal() >= NumberedTypes.size())
1560 NumberedTypes.resize(Lex.getUIntVal()+1);
1561 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1563 // If the type hasn't been defined yet, create a forward definition and
1564 // remember where that forward def'n was seen (in case it never is defined).
1565 if (Entry.first == 0) {
1566 Entry.first = StructType::create(Context);
1567 Entry.second = Lex.getLoc();
1569 Result = Entry.first;
1575 // Parse the type suffixes.
1577 switch (Lex.getKind()) {
1580 if (!AllowVoid && Result->isVoidTy())
1581 return Error(TypeLoc, "void type only allowed for function results");
1584 // Type ::= Type '*'
1586 if (Result->isLabelTy())
1587 return TokError("basic block pointers are invalid");
1588 if (Result->isVoidTy())
1589 return TokError("pointers to void are invalid - use i8* instead");
1590 if (!PointerType::isValidElementType(Result))
1591 return TokError("pointer to this type is invalid");
1592 Result = PointerType::getUnqual(Result);
1596 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1597 case lltok::kw_addrspace: {
1598 if (Result->isLabelTy())
1599 return TokError("basic block pointers are invalid");
1600 if (Result->isVoidTy())
1601 return TokError("pointers to void are invalid; use i8* instead");
1602 if (!PointerType::isValidElementType(Result))
1603 return TokError("pointer to this type is invalid");
1605 if (ParseOptionalAddrSpace(AddrSpace) ||
1606 ParseToken(lltok::star, "expected '*' in address space"))
1609 Result = PointerType::get(Result, AddrSpace);
1613 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1615 if (ParseFunctionType(Result))
1622 /// ParseParameterList
1624 /// ::= '(' Arg (',' Arg)* ')'
1626 /// ::= Type OptionalAttributes Value OptionalAttributes
1627 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1628 PerFunctionState &PFS) {
1629 if (ParseToken(lltok::lparen, "expected '(' in call"))
1632 unsigned AttrIndex = 1;
1633 while (Lex.getKind() != lltok::rparen) {
1634 // If this isn't the first argument, we need a comma.
1635 if (!ArgList.empty() &&
1636 ParseToken(lltok::comma, "expected ',' in argument list"))
1639 // Parse the argument.
1642 AttrBuilder ArgAttrs;
1644 if (ParseType(ArgTy, ArgLoc))
1647 // Otherwise, handle normal operands.
1648 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1650 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1655 Lex.Lex(); // Lex the ')'.
1661 /// ParseArgumentList - Parse the argument list for a function type or function
1663 /// ::= '(' ArgTypeListI ')'
1667 /// ::= ArgTypeList ',' '...'
1668 /// ::= ArgType (',' ArgType)*
1670 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1673 assert(Lex.getKind() == lltok::lparen);
1674 Lex.Lex(); // eat the (.
1676 if (Lex.getKind() == lltok::rparen) {
1678 } else if (Lex.getKind() == lltok::dotdotdot) {
1682 LocTy TypeLoc = Lex.getLoc();
1687 if (ParseType(ArgTy) ||
1688 ParseOptionalParamAttrs(Attrs)) return true;
1690 if (ArgTy->isVoidTy())
1691 return Error(TypeLoc, "argument can not have void type");
1693 if (Lex.getKind() == lltok::LocalVar) {
1694 Name = Lex.getStrVal();
1698 if (!FunctionType::isValidArgumentType(ArgTy))
1699 return Error(TypeLoc, "invalid type for function argument");
1701 unsigned AttrIndex = 1;
1702 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1703 AttributeSet::get(ArgTy->getContext(),
1704 AttrIndex++, Attrs), Name));
1706 while (EatIfPresent(lltok::comma)) {
1707 // Handle ... at end of arg list.
1708 if (EatIfPresent(lltok::dotdotdot)) {
1713 // Otherwise must be an argument type.
1714 TypeLoc = Lex.getLoc();
1715 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1717 if (ArgTy->isVoidTy())
1718 return Error(TypeLoc, "argument can not have void type");
1720 if (Lex.getKind() == lltok::LocalVar) {
1721 Name = Lex.getStrVal();
1727 if (!ArgTy->isFirstClassType())
1728 return Error(TypeLoc, "invalid type for function argument");
1730 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1731 AttributeSet::get(ArgTy->getContext(),
1732 AttrIndex++, Attrs),
1737 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1740 /// ParseFunctionType
1741 /// ::= Type ArgumentList OptionalAttrs
1742 bool LLParser::ParseFunctionType(Type *&Result) {
1743 assert(Lex.getKind() == lltok::lparen);
1745 if (!FunctionType::isValidReturnType(Result))
1746 return TokError("invalid function return type");
1748 SmallVector<ArgInfo, 8> ArgList;
1750 if (ParseArgumentList(ArgList, isVarArg))
1753 // Reject names on the arguments lists.
1754 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1755 if (!ArgList[i].Name.empty())
1756 return Error(ArgList[i].Loc, "argument name invalid in function type");
1757 if (ArgList[i].Attrs.hasAttributes(i + 1))
1758 return Error(ArgList[i].Loc,
1759 "argument attributes invalid in function type");
1762 SmallVector<Type*, 16> ArgListTy;
1763 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1764 ArgListTy.push_back(ArgList[i].Ty);
1766 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1770 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1772 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1773 SmallVector<Type*, 8> Elts;
1774 if (ParseStructBody(Elts)) return true;
1776 Result = StructType::get(Context, Elts, Packed);
1780 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1781 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1782 std::pair<Type*, LocTy> &Entry,
1784 // If the type was already defined, diagnose the redefinition.
1785 if (Entry.first && !Entry.second.isValid())
1786 return Error(TypeLoc, "redefinition of type");
1788 // If we have opaque, just return without filling in the definition for the
1789 // struct. This counts as a definition as far as the .ll file goes.
1790 if (EatIfPresent(lltok::kw_opaque)) {
1791 // This type is being defined, so clear the location to indicate this.
1792 Entry.second = SMLoc();
1794 // If this type number has never been uttered, create it.
1795 if (Entry.first == 0)
1796 Entry.first = StructType::create(Context, Name);
1797 ResultTy = Entry.first;
1801 // If the type starts with '<', then it is either a packed struct or a vector.
1802 bool isPacked = EatIfPresent(lltok::less);
1804 // If we don't have a struct, then we have a random type alias, which we
1805 // accept for compatibility with old files. These types are not allowed to be
1806 // forward referenced and not allowed to be recursive.
1807 if (Lex.getKind() != lltok::lbrace) {
1809 return Error(TypeLoc, "forward references to non-struct type");
1813 return ParseArrayVectorType(ResultTy, true);
1814 return ParseType(ResultTy);
1817 // This type is being defined, so clear the location to indicate this.
1818 Entry.second = SMLoc();
1820 // If this type number has never been uttered, create it.
1821 if (Entry.first == 0)
1822 Entry.first = StructType::create(Context, Name);
1824 StructType *STy = cast<StructType>(Entry.first);
1826 SmallVector<Type*, 8> Body;
1827 if (ParseStructBody(Body) ||
1828 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
1831 STy->setBody(Body, isPacked);
1837 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1840 /// ::= '{' Type (',' Type)* '}'
1841 /// ::= '<' '{' '}' '>'
1842 /// ::= '<' '{' Type (',' Type)* '}' '>'
1843 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
1844 assert(Lex.getKind() == lltok::lbrace);
1845 Lex.Lex(); // Consume the '{'
1847 // Handle the empty struct.
1848 if (EatIfPresent(lltok::rbrace))
1851 LocTy EltTyLoc = Lex.getLoc();
1853 if (ParseType(Ty)) return true;
1856 if (!StructType::isValidElementType(Ty))
1857 return Error(EltTyLoc, "invalid element type for struct");
1859 while (EatIfPresent(lltok::comma)) {
1860 EltTyLoc = Lex.getLoc();
1861 if (ParseType(Ty)) return true;
1863 if (!StructType::isValidElementType(Ty))
1864 return Error(EltTyLoc, "invalid element type for struct");
1869 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
1872 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1873 /// token has already been consumed.
1875 /// ::= '[' APSINTVAL 'x' Types ']'
1876 /// ::= '<' APSINTVAL 'x' Types '>'
1877 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
1878 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1879 Lex.getAPSIntVal().getBitWidth() > 64)
1880 return TokError("expected number in address space");
1882 LocTy SizeLoc = Lex.getLoc();
1883 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1886 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1889 LocTy TypeLoc = Lex.getLoc();
1891 if (ParseType(EltTy)) return true;
1893 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1894 "expected end of sequential type"))
1899 return Error(SizeLoc, "zero element vector is illegal");
1900 if ((unsigned)Size != Size)
1901 return Error(SizeLoc, "size too large for vector");
1902 if (!VectorType::isValidElementType(EltTy))
1903 return Error(TypeLoc, "invalid vector element type");
1904 Result = VectorType::get(EltTy, unsigned(Size));
1906 if (!ArrayType::isValidElementType(EltTy))
1907 return Error(TypeLoc, "invalid array element type");
1908 Result = ArrayType::get(EltTy, Size);
1913 //===----------------------------------------------------------------------===//
1914 // Function Semantic Analysis.
1915 //===----------------------------------------------------------------------===//
1917 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1919 : P(p), F(f), FunctionNumber(functionNumber) {
1921 // Insert unnamed arguments into the NumberedVals list.
1922 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1925 NumberedVals.push_back(AI);
1928 LLParser::PerFunctionState::~PerFunctionState() {
1929 // If there were any forward referenced non-basicblock values, delete them.
1930 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1931 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1932 if (!isa<BasicBlock>(I->second.first)) {
1933 I->second.first->replaceAllUsesWith(
1934 UndefValue::get(I->second.first->getType()));
1935 delete I->second.first;
1936 I->second.first = 0;
1939 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1940 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1941 if (!isa<BasicBlock>(I->second.first)) {
1942 I->second.first->replaceAllUsesWith(
1943 UndefValue::get(I->second.first->getType()));
1944 delete I->second.first;
1945 I->second.first = 0;
1949 bool LLParser::PerFunctionState::FinishFunction() {
1950 // Check to see if someone took the address of labels in this block.
1951 if (!P.ForwardRefBlockAddresses.empty()) {
1953 if (!F.getName().empty()) {
1954 FunctionID.Kind = ValID::t_GlobalName;
1955 FunctionID.StrVal = F.getName();
1957 FunctionID.Kind = ValID::t_GlobalID;
1958 FunctionID.UIntVal = FunctionNumber;
1961 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1962 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1963 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1964 // Resolve all these references.
1965 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1968 P.ForwardRefBlockAddresses.erase(FRBAI);
1972 if (!ForwardRefVals.empty())
1973 return P.Error(ForwardRefVals.begin()->second.second,
1974 "use of undefined value '%" + ForwardRefVals.begin()->first +
1976 if (!ForwardRefValIDs.empty())
1977 return P.Error(ForwardRefValIDs.begin()->second.second,
1978 "use of undefined value '%" +
1979 Twine(ForwardRefValIDs.begin()->first) + "'");
1984 /// GetVal - Get a value with the specified name or ID, creating a
1985 /// forward reference record if needed. This can return null if the value
1986 /// exists but does not have the right type.
1987 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1988 Type *Ty, LocTy Loc) {
1989 // Look this name up in the normal function symbol table.
1990 Value *Val = F.getValueSymbolTable().lookup(Name);
1992 // If this is a forward reference for the value, see if we already created a
1993 // forward ref record.
1995 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1996 I = ForwardRefVals.find(Name);
1997 if (I != ForwardRefVals.end())
1998 Val = I->second.first;
2001 // If we have the value in the symbol table or fwd-ref table, return it.
2003 if (Val->getType() == Ty) return Val;
2004 if (Ty->isLabelTy())
2005 P.Error(Loc, "'%" + Name + "' is not a basic block");
2007 P.Error(Loc, "'%" + Name + "' defined with type '" +
2008 getTypeString(Val->getType()) + "'");
2012 // Don't make placeholders with invalid type.
2013 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2014 P.Error(Loc, "invalid use of a non-first-class type");
2018 // Otherwise, create a new forward reference for this value and remember it.
2020 if (Ty->isLabelTy())
2021 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2023 FwdVal = new Argument(Ty, Name);
2025 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2029 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2031 // Look this name up in the normal function symbol table.
2032 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
2034 // If this is a forward reference for the value, see if we already created a
2035 // forward ref record.
2037 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2038 I = ForwardRefValIDs.find(ID);
2039 if (I != ForwardRefValIDs.end())
2040 Val = I->second.first;
2043 // If we have the value in the symbol table or fwd-ref table, return it.
2045 if (Val->getType() == Ty) return Val;
2046 if (Ty->isLabelTy())
2047 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2049 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2050 getTypeString(Val->getType()) + "'");
2054 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2055 P.Error(Loc, "invalid use of a non-first-class type");
2059 // Otherwise, create a new forward reference for this value and remember it.
2061 if (Ty->isLabelTy())
2062 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2064 FwdVal = new Argument(Ty);
2066 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2070 /// SetInstName - After an instruction is parsed and inserted into its
2071 /// basic block, this installs its name.
2072 bool LLParser::PerFunctionState::SetInstName(int NameID,
2073 const std::string &NameStr,
2074 LocTy NameLoc, Instruction *Inst) {
2075 // If this instruction has void type, it cannot have a name or ID specified.
2076 if (Inst->getType()->isVoidTy()) {
2077 if (NameID != -1 || !NameStr.empty())
2078 return P.Error(NameLoc, "instructions returning void cannot have a name");
2082 // If this was a numbered instruction, verify that the instruction is the
2083 // expected value and resolve any forward references.
2084 if (NameStr.empty()) {
2085 // If neither a name nor an ID was specified, just use the next ID.
2087 NameID = NumberedVals.size();
2089 if (unsigned(NameID) != NumberedVals.size())
2090 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2091 Twine(NumberedVals.size()) + "'");
2093 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2094 ForwardRefValIDs.find(NameID);
2095 if (FI != ForwardRefValIDs.end()) {
2096 if (FI->second.first->getType() != Inst->getType())
2097 return P.Error(NameLoc, "instruction forward referenced with type '" +
2098 getTypeString(FI->second.first->getType()) + "'");
2099 FI->second.first->replaceAllUsesWith(Inst);
2100 delete FI->second.first;
2101 ForwardRefValIDs.erase(FI);
2104 NumberedVals.push_back(Inst);
2108 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2109 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2110 FI = ForwardRefVals.find(NameStr);
2111 if (FI != ForwardRefVals.end()) {
2112 if (FI->second.first->getType() != Inst->getType())
2113 return P.Error(NameLoc, "instruction forward referenced with type '" +
2114 getTypeString(FI->second.first->getType()) + "'");
2115 FI->second.first->replaceAllUsesWith(Inst);
2116 delete FI->second.first;
2117 ForwardRefVals.erase(FI);
2120 // Set the name on the instruction.
2121 Inst->setName(NameStr);
2123 if (Inst->getName() != NameStr)
2124 return P.Error(NameLoc, "multiple definition of local value named '" +
2129 /// GetBB - Get a basic block with the specified name or ID, creating a
2130 /// forward reference record if needed.
2131 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2133 return cast_or_null<BasicBlock>(GetVal(Name,
2134 Type::getLabelTy(F.getContext()), Loc));
2137 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2138 return cast_or_null<BasicBlock>(GetVal(ID,
2139 Type::getLabelTy(F.getContext()), Loc));
2142 /// DefineBB - Define the specified basic block, which is either named or
2143 /// unnamed. If there is an error, this returns null otherwise it returns
2144 /// the block being defined.
2145 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2149 BB = GetBB(NumberedVals.size(), Loc);
2151 BB = GetBB(Name, Loc);
2152 if (BB == 0) return 0; // Already diagnosed error.
2154 // Move the block to the end of the function. Forward ref'd blocks are
2155 // inserted wherever they happen to be referenced.
2156 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2158 // Remove the block from forward ref sets.
2160 ForwardRefValIDs.erase(NumberedVals.size());
2161 NumberedVals.push_back(BB);
2163 // BB forward references are already in the function symbol table.
2164 ForwardRefVals.erase(Name);
2170 //===----------------------------------------------------------------------===//
2172 //===----------------------------------------------------------------------===//
2174 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2175 /// type implied. For example, if we parse "4" we don't know what integer type
2176 /// it has. The value will later be combined with its type and checked for
2177 /// sanity. PFS is used to convert function-local operands of metadata (since
2178 /// metadata operands are not just parsed here but also converted to values).
2179 /// PFS can be null when we are not parsing metadata values inside a function.
2180 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2181 ID.Loc = Lex.getLoc();
2182 switch (Lex.getKind()) {
2183 default: return TokError("expected value token");
2184 case lltok::GlobalID: // @42
2185 ID.UIntVal = Lex.getUIntVal();
2186 ID.Kind = ValID::t_GlobalID;
2188 case lltok::GlobalVar: // @foo
2189 ID.StrVal = Lex.getStrVal();
2190 ID.Kind = ValID::t_GlobalName;
2192 case lltok::LocalVarID: // %42
2193 ID.UIntVal = Lex.getUIntVal();
2194 ID.Kind = ValID::t_LocalID;
2196 case lltok::LocalVar: // %foo
2197 ID.StrVal = Lex.getStrVal();
2198 ID.Kind = ValID::t_LocalName;
2200 case lltok::exclaim: // !42, !{...}, or !"foo"
2201 return ParseMetadataValue(ID, PFS);
2203 ID.APSIntVal = Lex.getAPSIntVal();
2204 ID.Kind = ValID::t_APSInt;
2206 case lltok::APFloat:
2207 ID.APFloatVal = Lex.getAPFloatVal();
2208 ID.Kind = ValID::t_APFloat;
2210 case lltok::kw_true:
2211 ID.ConstantVal = ConstantInt::getTrue(Context);
2212 ID.Kind = ValID::t_Constant;
2214 case lltok::kw_false:
2215 ID.ConstantVal = ConstantInt::getFalse(Context);
2216 ID.Kind = ValID::t_Constant;
2218 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2219 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2220 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2222 case lltok::lbrace: {
2223 // ValID ::= '{' ConstVector '}'
2225 SmallVector<Constant*, 16> Elts;
2226 if (ParseGlobalValueVector(Elts) ||
2227 ParseToken(lltok::rbrace, "expected end of struct constant"))
2230 ID.ConstantStructElts = new Constant*[Elts.size()];
2231 ID.UIntVal = Elts.size();
2232 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2233 ID.Kind = ValID::t_ConstantStruct;
2237 // ValID ::= '<' ConstVector '>' --> Vector.
2238 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2240 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2242 SmallVector<Constant*, 16> Elts;
2243 LocTy FirstEltLoc = Lex.getLoc();
2244 if (ParseGlobalValueVector(Elts) ||
2246 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2247 ParseToken(lltok::greater, "expected end of constant"))
2250 if (isPackedStruct) {
2251 ID.ConstantStructElts = new Constant*[Elts.size()];
2252 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2253 ID.UIntVal = Elts.size();
2254 ID.Kind = ValID::t_PackedConstantStruct;
2259 return Error(ID.Loc, "constant vector must not be empty");
2261 if (!Elts[0]->getType()->isIntegerTy() &&
2262 !Elts[0]->getType()->isFloatingPointTy() &&
2263 !Elts[0]->getType()->isPointerTy())
2264 return Error(FirstEltLoc,
2265 "vector elements must have integer, pointer or floating point type");
2267 // Verify that all the vector elements have the same type.
2268 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2269 if (Elts[i]->getType() != Elts[0]->getType())
2270 return Error(FirstEltLoc,
2271 "vector element #" + Twine(i) +
2272 " is not of type '" + getTypeString(Elts[0]->getType()));
2274 ID.ConstantVal = ConstantVector::get(Elts);
2275 ID.Kind = ValID::t_Constant;
2278 case lltok::lsquare: { // Array Constant
2280 SmallVector<Constant*, 16> Elts;
2281 LocTy FirstEltLoc = Lex.getLoc();
2282 if (ParseGlobalValueVector(Elts) ||
2283 ParseToken(lltok::rsquare, "expected end of array constant"))
2286 // Handle empty element.
2288 // Use undef instead of an array because it's inconvenient to determine
2289 // the element type at this point, there being no elements to examine.
2290 ID.Kind = ValID::t_EmptyArray;
2294 if (!Elts[0]->getType()->isFirstClassType())
2295 return Error(FirstEltLoc, "invalid array element type: " +
2296 getTypeString(Elts[0]->getType()));
2298 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2300 // Verify all elements are correct type!
2301 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2302 if (Elts[i]->getType() != Elts[0]->getType())
2303 return Error(FirstEltLoc,
2304 "array element #" + Twine(i) +
2305 " is not of type '" + getTypeString(Elts[0]->getType()));
2308 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2309 ID.Kind = ValID::t_Constant;
2312 case lltok::kw_c: // c "foo"
2314 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2316 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2317 ID.Kind = ValID::t_Constant;
2320 case lltok::kw_asm: {
2321 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2323 bool HasSideEffect, AlignStack, AsmDialect;
2325 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2326 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2327 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2328 ParseStringConstant(ID.StrVal) ||
2329 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2330 ParseToken(lltok::StringConstant, "expected constraint string"))
2332 ID.StrVal2 = Lex.getStrVal();
2333 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2334 (unsigned(AsmDialect)<<2);
2335 ID.Kind = ValID::t_InlineAsm;
2339 case lltok::kw_blockaddress: {
2340 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2344 LocTy FnLoc, LabelLoc;
2346 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2348 ParseToken(lltok::comma, "expected comma in block address expression")||
2349 ParseValID(Label) ||
2350 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2353 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2354 return Error(Fn.Loc, "expected function name in blockaddress");
2355 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2356 return Error(Label.Loc, "expected basic block name in blockaddress");
2358 // Make a global variable as a placeholder for this reference.
2359 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2360 false, GlobalValue::InternalLinkage,
2362 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2363 ID.ConstantVal = FwdRef;
2364 ID.Kind = ValID::t_Constant;
2368 case lltok::kw_trunc:
2369 case lltok::kw_zext:
2370 case lltok::kw_sext:
2371 case lltok::kw_fptrunc:
2372 case lltok::kw_fpext:
2373 case lltok::kw_bitcast:
2374 case lltok::kw_uitofp:
2375 case lltok::kw_sitofp:
2376 case lltok::kw_fptoui:
2377 case lltok::kw_fptosi:
2378 case lltok::kw_inttoptr:
2379 case lltok::kw_ptrtoint: {
2380 unsigned Opc = Lex.getUIntVal();
2384 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2385 ParseGlobalTypeAndValue(SrcVal) ||
2386 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2387 ParseType(DestTy) ||
2388 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2390 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2391 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2392 getTypeString(SrcVal->getType()) + "' to '" +
2393 getTypeString(DestTy) + "'");
2394 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2396 ID.Kind = ValID::t_Constant;
2399 case lltok::kw_extractvalue: {
2402 SmallVector<unsigned, 4> Indices;
2403 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2404 ParseGlobalTypeAndValue(Val) ||
2405 ParseIndexList(Indices) ||
2406 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2409 if (!Val->getType()->isAggregateType())
2410 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2411 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2412 return Error(ID.Loc, "invalid indices for extractvalue");
2413 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2414 ID.Kind = ValID::t_Constant;
2417 case lltok::kw_insertvalue: {
2419 Constant *Val0, *Val1;
2420 SmallVector<unsigned, 4> Indices;
2421 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2422 ParseGlobalTypeAndValue(Val0) ||
2423 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2424 ParseGlobalTypeAndValue(Val1) ||
2425 ParseIndexList(Indices) ||
2426 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2428 if (!Val0->getType()->isAggregateType())
2429 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2430 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2431 return Error(ID.Loc, "invalid indices for insertvalue");
2432 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2433 ID.Kind = ValID::t_Constant;
2436 case lltok::kw_icmp:
2437 case lltok::kw_fcmp: {
2438 unsigned PredVal, Opc = Lex.getUIntVal();
2439 Constant *Val0, *Val1;
2441 if (ParseCmpPredicate(PredVal, Opc) ||
2442 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2443 ParseGlobalTypeAndValue(Val0) ||
2444 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2445 ParseGlobalTypeAndValue(Val1) ||
2446 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2449 if (Val0->getType() != Val1->getType())
2450 return Error(ID.Loc, "compare operands must have the same type");
2452 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2454 if (Opc == Instruction::FCmp) {
2455 if (!Val0->getType()->isFPOrFPVectorTy())
2456 return Error(ID.Loc, "fcmp requires floating point operands");
2457 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2459 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2460 if (!Val0->getType()->isIntOrIntVectorTy() &&
2461 !Val0->getType()->getScalarType()->isPointerTy())
2462 return Error(ID.Loc, "icmp requires pointer or integer operands");
2463 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2465 ID.Kind = ValID::t_Constant;
2469 // Binary Operators.
2471 case lltok::kw_fadd:
2473 case lltok::kw_fsub:
2475 case lltok::kw_fmul:
2476 case lltok::kw_udiv:
2477 case lltok::kw_sdiv:
2478 case lltok::kw_fdiv:
2479 case lltok::kw_urem:
2480 case lltok::kw_srem:
2481 case lltok::kw_frem:
2483 case lltok::kw_lshr:
2484 case lltok::kw_ashr: {
2488 unsigned Opc = Lex.getUIntVal();
2489 Constant *Val0, *Val1;
2491 LocTy ModifierLoc = Lex.getLoc();
2492 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2493 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2494 if (EatIfPresent(lltok::kw_nuw))
2496 if (EatIfPresent(lltok::kw_nsw)) {
2498 if (EatIfPresent(lltok::kw_nuw))
2501 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2502 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2503 if (EatIfPresent(lltok::kw_exact))
2506 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2507 ParseGlobalTypeAndValue(Val0) ||
2508 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2509 ParseGlobalTypeAndValue(Val1) ||
2510 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2512 if (Val0->getType() != Val1->getType())
2513 return Error(ID.Loc, "operands of constexpr must have same type");
2514 if (!Val0->getType()->isIntOrIntVectorTy()) {
2516 return Error(ModifierLoc, "nuw only applies to integer operations");
2518 return Error(ModifierLoc, "nsw only applies to integer operations");
2520 // Check that the type is valid for the operator.
2522 case Instruction::Add:
2523 case Instruction::Sub:
2524 case Instruction::Mul:
2525 case Instruction::UDiv:
2526 case Instruction::SDiv:
2527 case Instruction::URem:
2528 case Instruction::SRem:
2529 case Instruction::Shl:
2530 case Instruction::AShr:
2531 case Instruction::LShr:
2532 if (!Val0->getType()->isIntOrIntVectorTy())
2533 return Error(ID.Loc, "constexpr requires integer operands");
2535 case Instruction::FAdd:
2536 case Instruction::FSub:
2537 case Instruction::FMul:
2538 case Instruction::FDiv:
2539 case Instruction::FRem:
2540 if (!Val0->getType()->isFPOrFPVectorTy())
2541 return Error(ID.Loc, "constexpr requires fp operands");
2543 default: llvm_unreachable("Unknown binary operator!");
2546 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2547 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2548 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2549 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2551 ID.Kind = ValID::t_Constant;
2555 // Logical Operations
2558 case lltok::kw_xor: {
2559 unsigned Opc = Lex.getUIntVal();
2560 Constant *Val0, *Val1;
2562 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2563 ParseGlobalTypeAndValue(Val0) ||
2564 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2565 ParseGlobalTypeAndValue(Val1) ||
2566 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2568 if (Val0->getType() != Val1->getType())
2569 return Error(ID.Loc, "operands of constexpr must have same type");
2570 if (!Val0->getType()->isIntOrIntVectorTy())
2571 return Error(ID.Loc,
2572 "constexpr requires integer or integer vector operands");
2573 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2574 ID.Kind = ValID::t_Constant;
2578 case lltok::kw_getelementptr:
2579 case lltok::kw_shufflevector:
2580 case lltok::kw_insertelement:
2581 case lltok::kw_extractelement:
2582 case lltok::kw_select: {
2583 unsigned Opc = Lex.getUIntVal();
2584 SmallVector<Constant*, 16> Elts;
2585 bool InBounds = false;
2587 if (Opc == Instruction::GetElementPtr)
2588 InBounds = EatIfPresent(lltok::kw_inbounds);
2589 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2590 ParseGlobalValueVector(Elts) ||
2591 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2594 if (Opc == Instruction::GetElementPtr) {
2595 if (Elts.size() == 0 ||
2596 !Elts[0]->getType()->getScalarType()->isPointerTy())
2597 return Error(ID.Loc, "getelementptr requires pointer operand");
2599 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2600 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2601 return Error(ID.Loc, "invalid indices for getelementptr");
2602 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2604 } else if (Opc == Instruction::Select) {
2605 if (Elts.size() != 3)
2606 return Error(ID.Loc, "expected three operands to select");
2607 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2609 return Error(ID.Loc, Reason);
2610 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2611 } else if (Opc == Instruction::ShuffleVector) {
2612 if (Elts.size() != 3)
2613 return Error(ID.Loc, "expected three operands to shufflevector");
2614 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2615 return Error(ID.Loc, "invalid operands to shufflevector");
2617 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2618 } else if (Opc == Instruction::ExtractElement) {
2619 if (Elts.size() != 2)
2620 return Error(ID.Loc, "expected two operands to extractelement");
2621 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2622 return Error(ID.Loc, "invalid extractelement operands");
2623 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2625 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2626 if (Elts.size() != 3)
2627 return Error(ID.Loc, "expected three operands to insertelement");
2628 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2629 return Error(ID.Loc, "invalid insertelement operands");
2631 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2634 ID.Kind = ValID::t_Constant;
2643 /// ParseGlobalValue - Parse a global value with the specified type.
2644 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2648 bool Parsed = ParseValID(ID) ||
2649 ConvertValIDToValue(Ty, ID, V, NULL);
2650 if (V && !(C = dyn_cast<Constant>(V)))
2651 return Error(ID.Loc, "global values must be constants");
2655 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2657 return ParseType(Ty) ||
2658 ParseGlobalValue(Ty, V);
2661 /// ParseGlobalValueVector
2663 /// ::= TypeAndValue (',' TypeAndValue)*
2664 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2666 if (Lex.getKind() == lltok::rbrace ||
2667 Lex.getKind() == lltok::rsquare ||
2668 Lex.getKind() == lltok::greater ||
2669 Lex.getKind() == lltok::rparen)
2673 if (ParseGlobalTypeAndValue(C)) return true;
2676 while (EatIfPresent(lltok::comma)) {
2677 if (ParseGlobalTypeAndValue(C)) return true;
2684 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2685 assert(Lex.getKind() == lltok::lbrace);
2688 SmallVector<Value*, 16> Elts;
2689 if (ParseMDNodeVector(Elts, PFS) ||
2690 ParseToken(lltok::rbrace, "expected end of metadata node"))
2693 ID.MDNodeVal = MDNode::get(Context, Elts);
2694 ID.Kind = ValID::t_MDNode;
2698 /// ParseMetadataValue
2702 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2703 assert(Lex.getKind() == lltok::exclaim);
2708 if (Lex.getKind() == lltok::lbrace)
2709 return ParseMetadataListValue(ID, PFS);
2711 // Standalone metadata reference
2713 if (Lex.getKind() == lltok::APSInt) {
2714 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2715 ID.Kind = ValID::t_MDNode;
2720 // ::= '!' STRINGCONSTANT
2721 if (ParseMDString(ID.MDStringVal)) return true;
2722 ID.Kind = ValID::t_MDString;
2727 //===----------------------------------------------------------------------===//
2728 // Function Parsing.
2729 //===----------------------------------------------------------------------===//
2731 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2732 PerFunctionState *PFS) {
2733 if (Ty->isFunctionTy())
2734 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2737 case ValID::t_LocalID:
2738 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2739 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2741 case ValID::t_LocalName:
2742 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2743 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2745 case ValID::t_InlineAsm: {
2746 PointerType *PTy = dyn_cast<PointerType>(Ty);
2748 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2749 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2750 return Error(ID.Loc, "invalid type for inline asm constraint string");
2751 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
2752 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
2755 case ValID::t_MDNode:
2756 if (!Ty->isMetadataTy())
2757 return Error(ID.Loc, "metadata value must have metadata type");
2760 case ValID::t_MDString:
2761 if (!Ty->isMetadataTy())
2762 return Error(ID.Loc, "metadata value must have metadata type");
2765 case ValID::t_GlobalName:
2766 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2768 case ValID::t_GlobalID:
2769 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2771 case ValID::t_APSInt:
2772 if (!Ty->isIntegerTy())
2773 return Error(ID.Loc, "integer constant must have integer type");
2774 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2775 V = ConstantInt::get(Context, ID.APSIntVal);
2777 case ValID::t_APFloat:
2778 if (!Ty->isFloatingPointTy() ||
2779 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2780 return Error(ID.Loc, "floating point constant invalid for type");
2782 // The lexer has no type info, so builds all half, float, and double FP
2783 // constants as double. Fix this here. Long double does not need this.
2784 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
2787 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
2789 else if (Ty->isFloatTy())
2790 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2793 V = ConstantFP::get(Context, ID.APFloatVal);
2795 if (V->getType() != Ty)
2796 return Error(ID.Loc, "floating point constant does not have type '" +
2797 getTypeString(Ty) + "'");
2801 if (!Ty->isPointerTy())
2802 return Error(ID.Loc, "null must be a pointer type");
2803 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2805 case ValID::t_Undef:
2806 // FIXME: LabelTy should not be a first-class type.
2807 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2808 return Error(ID.Loc, "invalid type for undef constant");
2809 V = UndefValue::get(Ty);
2811 case ValID::t_EmptyArray:
2812 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2813 return Error(ID.Loc, "invalid empty array initializer");
2814 V = UndefValue::get(Ty);
2817 // FIXME: LabelTy should not be a first-class type.
2818 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2819 return Error(ID.Loc, "invalid type for null constant");
2820 V = Constant::getNullValue(Ty);
2822 case ValID::t_Constant:
2823 if (ID.ConstantVal->getType() != Ty)
2824 return Error(ID.Loc, "constant expression type mismatch");
2828 case ValID::t_ConstantStruct:
2829 case ValID::t_PackedConstantStruct:
2830 if (StructType *ST = dyn_cast<StructType>(Ty)) {
2831 if (ST->getNumElements() != ID.UIntVal)
2832 return Error(ID.Loc,
2833 "initializer with struct type has wrong # elements");
2834 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
2835 return Error(ID.Loc, "packed'ness of initializer and type don't match");
2837 // Verify that the elements are compatible with the structtype.
2838 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
2839 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
2840 return Error(ID.Loc, "element " + Twine(i) +
2841 " of struct initializer doesn't match struct element type");
2843 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
2846 return Error(ID.Loc, "constant expression type mismatch");
2849 llvm_unreachable("Invalid ValID");
2852 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
2855 return ParseValID(ID, PFS) ||
2856 ConvertValIDToValue(Ty, ID, V, PFS);
2859 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
2861 return ParseType(Ty) ||
2862 ParseValue(Ty, V, PFS);
2865 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2866 PerFunctionState &PFS) {
2869 if (ParseTypeAndValue(V, PFS)) return true;
2870 if (!isa<BasicBlock>(V))
2871 return Error(Loc, "expected a basic block");
2872 BB = cast<BasicBlock>(V);
2878 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2879 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2880 /// OptionalAlign OptGC
2881 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2882 // Parse the linkage.
2883 LocTy LinkageLoc = Lex.getLoc();
2886 unsigned Visibility;
2887 AttrBuilder RetAttrs;
2890 LocTy RetTypeLoc = Lex.getLoc();
2891 if (ParseOptionalLinkage(Linkage) ||
2892 ParseOptionalVisibility(Visibility) ||
2893 ParseOptionalCallingConv(CC) ||
2894 ParseOptionalReturnAttrs(RetAttrs) ||
2895 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2898 // Verify that the linkage is ok.
2899 switch ((GlobalValue::LinkageTypes)Linkage) {
2900 case GlobalValue::ExternalLinkage:
2901 break; // always ok.
2902 case GlobalValue::DLLImportLinkage:
2903 case GlobalValue::ExternalWeakLinkage:
2905 return Error(LinkageLoc, "invalid linkage for function definition");
2907 case GlobalValue::PrivateLinkage:
2908 case GlobalValue::LinkerPrivateLinkage:
2909 case GlobalValue::LinkerPrivateWeakLinkage:
2910 case GlobalValue::InternalLinkage:
2911 case GlobalValue::AvailableExternallyLinkage:
2912 case GlobalValue::LinkOnceAnyLinkage:
2913 case GlobalValue::LinkOnceODRLinkage:
2914 case GlobalValue::LinkOnceODRAutoHideLinkage:
2915 case GlobalValue::WeakAnyLinkage:
2916 case GlobalValue::WeakODRLinkage:
2917 case GlobalValue::DLLExportLinkage:
2919 return Error(LinkageLoc, "invalid linkage for function declaration");
2921 case GlobalValue::AppendingLinkage:
2922 case GlobalValue::CommonLinkage:
2923 return Error(LinkageLoc, "invalid function linkage type");
2926 if (!FunctionType::isValidReturnType(RetType))
2927 return Error(RetTypeLoc, "invalid function return type");
2929 LocTy NameLoc = Lex.getLoc();
2931 std::string FunctionName;
2932 if (Lex.getKind() == lltok::GlobalVar) {
2933 FunctionName = Lex.getStrVal();
2934 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2935 unsigned NameID = Lex.getUIntVal();
2937 if (NameID != NumberedVals.size())
2938 return TokError("function expected to be numbered '%" +
2939 Twine(NumberedVals.size()) + "'");
2941 return TokError("expected function name");
2946 if (Lex.getKind() != lltok::lparen)
2947 return TokError("expected '(' in function argument list");
2949 SmallVector<ArgInfo, 8> ArgList;
2951 AttrBuilder FuncAttrs;
2952 std::vector<unsigned> FwdRefAttrGrps;
2954 std::string Section;
2958 LocTy UnnamedAddrLoc;
2960 if (ParseArgumentList(ArgList, isVarArg) ||
2961 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
2963 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
2965 (EatIfPresent(lltok::kw_section) &&
2966 ParseStringConstant(Section)) ||
2967 ParseOptionalAlignment(Alignment) ||
2968 (EatIfPresent(lltok::kw_gc) &&
2969 ParseStringConstant(GC)))
2972 if (FuncAttrs.contains(Attribute::NoBuiltin))
2973 return Error(NoBuiltinLoc, "'nobuiltin' attribute not valid on function");
2975 // If the alignment was parsed as an attribute, move to the alignment field.
2976 if (FuncAttrs.hasAlignmentAttr()) {
2977 Alignment = FuncAttrs.getAlignment();
2978 FuncAttrs.removeAttribute(Attribute::Alignment);
2981 // Okay, if we got here, the function is syntactically valid. Convert types
2982 // and do semantic checks.
2983 std::vector<Type*> ParamTypeList;
2984 SmallVector<AttributeSet, 8> Attrs;
2986 if (RetAttrs.hasAttributes())
2987 Attrs.push_back(AttributeSet::get(RetType->getContext(),
2988 AttributeSet::ReturnIndex,
2991 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2992 ParamTypeList.push_back(ArgList[i].Ty);
2993 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
2994 AttrBuilder B(ArgList[i].Attrs, i + 1);
2995 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
2999 if (FuncAttrs.hasAttributes())
3000 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3001 AttributeSet::FunctionIndex,
3004 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3006 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
3007 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
3010 FunctionType::get(RetType, ParamTypeList, isVarArg);
3011 PointerType *PFT = PointerType::getUnqual(FT);
3014 if (!FunctionName.empty()) {
3015 // If this was a definition of a forward reference, remove the definition
3016 // from the forward reference table and fill in the forward ref.
3017 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
3018 ForwardRefVals.find(FunctionName);
3019 if (FRVI != ForwardRefVals.end()) {
3020 Fn = M->getFunction(FunctionName);
3022 return Error(FRVI->second.second, "invalid forward reference to "
3023 "function as global value!");
3024 if (Fn->getType() != PFT)
3025 return Error(FRVI->second.second, "invalid forward reference to "
3026 "function '" + FunctionName + "' with wrong type!");
3028 ForwardRefVals.erase(FRVI);
3029 } else if ((Fn = M->getFunction(FunctionName))) {
3030 // Reject redefinitions.
3031 return Error(NameLoc, "invalid redefinition of function '" +
3032 FunctionName + "'");
3033 } else if (M->getNamedValue(FunctionName)) {
3034 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
3038 // If this is a definition of a forward referenced function, make sure the
3040 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
3041 = ForwardRefValIDs.find(NumberedVals.size());
3042 if (I != ForwardRefValIDs.end()) {
3043 Fn = cast<Function>(I->second.first);
3044 if (Fn->getType() != PFT)
3045 return Error(NameLoc, "type of definition and forward reference of '@" +
3046 Twine(NumberedVals.size()) + "' disagree");
3047 ForwardRefValIDs.erase(I);
3052 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
3053 else // Move the forward-reference to the correct spot in the module.
3054 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
3056 if (FunctionName.empty())
3057 NumberedVals.push_back(Fn);
3059 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
3060 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
3061 Fn->setCallingConv(CC);
3062 Fn->setAttributes(PAL);
3063 Fn->setUnnamedAddr(UnnamedAddr);
3064 Fn->setAlignment(Alignment);
3065 Fn->setSection(Section);
3066 if (!GC.empty()) Fn->setGC(GC.c_str());
3067 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
3069 // Add all of the arguments we parsed to the function.
3070 Function::arg_iterator ArgIt = Fn->arg_begin();
3071 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
3072 // If the argument has a name, insert it into the argument symbol table.
3073 if (ArgList[i].Name.empty()) continue;
3075 // Set the name, if it conflicted, it will be auto-renamed.
3076 ArgIt->setName(ArgList[i].Name);
3078 if (ArgIt->getName() != ArgList[i].Name)
3079 return Error(ArgList[i].Loc, "redefinition of argument '%" +
3080 ArgList[i].Name + "'");
3087 /// ParseFunctionBody
3088 /// ::= '{' BasicBlock+ '}'
3090 bool LLParser::ParseFunctionBody(Function &Fn) {
3091 if (Lex.getKind() != lltok::lbrace)
3092 return TokError("expected '{' in function body");
3093 Lex.Lex(); // eat the {.
3095 int FunctionNumber = -1;
3096 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
3098 PerFunctionState PFS(*this, Fn, FunctionNumber);
3100 // We need at least one basic block.
3101 if (Lex.getKind() == lltok::rbrace)
3102 return TokError("function body requires at least one basic block");
3104 while (Lex.getKind() != lltok::rbrace)
3105 if (ParseBasicBlock(PFS)) return true;
3110 // Verify function is ok.
3111 return PFS.FinishFunction();
3115 /// ::= LabelStr? Instruction*
3116 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
3117 // If this basic block starts out with a name, remember it.
3119 LocTy NameLoc = Lex.getLoc();
3120 if (Lex.getKind() == lltok::LabelStr) {
3121 Name = Lex.getStrVal();
3125 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
3126 if (BB == 0) return true;
3128 std::string NameStr;
3130 // Parse the instructions in this block until we get a terminator.
3132 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
3134 // This instruction may have three possibilities for a name: a) none
3135 // specified, b) name specified "%foo =", c) number specified: "%4 =".
3136 LocTy NameLoc = Lex.getLoc();
3140 if (Lex.getKind() == lltok::LocalVarID) {
3141 NameID = Lex.getUIntVal();
3143 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
3145 } else if (Lex.getKind() == lltok::LocalVar) {
3146 NameStr = Lex.getStrVal();
3148 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
3152 switch (ParseInstruction(Inst, BB, PFS)) {
3153 default: llvm_unreachable("Unknown ParseInstruction result!");
3154 case InstError: return true;
3156 BB->getInstList().push_back(Inst);
3158 // With a normal result, we check to see if the instruction is followed by
3159 // a comma and metadata.
3160 if (EatIfPresent(lltok::comma))
3161 if (ParseInstructionMetadata(Inst, &PFS))
3164 case InstExtraComma:
3165 BB->getInstList().push_back(Inst);
3167 // If the instruction parser ate an extra comma at the end of it, it
3168 // *must* be followed by metadata.
3169 if (ParseInstructionMetadata(Inst, &PFS))
3174 // Set the name on the instruction.
3175 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3176 } while (!isa<TerminatorInst>(Inst));
3181 //===----------------------------------------------------------------------===//
3182 // Instruction Parsing.
3183 //===----------------------------------------------------------------------===//
3185 /// ParseInstruction - Parse one of the many different instructions.
3187 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3188 PerFunctionState &PFS) {
3189 lltok::Kind Token = Lex.getKind();
3190 if (Token == lltok::Eof)
3191 return TokError("found end of file when expecting more instructions");
3192 LocTy Loc = Lex.getLoc();
3193 unsigned KeywordVal = Lex.getUIntVal();
3194 Lex.Lex(); // Eat the keyword.
3197 default: return Error(Loc, "expected instruction opcode");
3198 // Terminator Instructions.
3199 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3200 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3201 case lltok::kw_br: return ParseBr(Inst, PFS);
3202 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3203 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3204 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3205 case lltok::kw_resume: return ParseResume(Inst, PFS);
3206 // Binary Operators.
3210 case lltok::kw_shl: {
3211 bool NUW = EatIfPresent(lltok::kw_nuw);
3212 bool NSW = EatIfPresent(lltok::kw_nsw);
3213 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3215 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3217 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3218 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3221 case lltok::kw_fadd:
3222 case lltok::kw_fsub:
3223 case lltok::kw_fmul:
3224 case lltok::kw_fdiv:
3225 case lltok::kw_frem: {
3226 FastMathFlags FMF = EatFastMathFlagsIfPresent();
3227 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
3231 Inst->setFastMathFlags(FMF);
3235 case lltok::kw_sdiv:
3236 case lltok::kw_udiv:
3237 case lltok::kw_lshr:
3238 case lltok::kw_ashr: {
3239 bool Exact = EatIfPresent(lltok::kw_exact);
3241 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3242 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3246 case lltok::kw_urem:
3247 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3250 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3251 case lltok::kw_icmp:
3252 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3254 case lltok::kw_trunc:
3255 case lltok::kw_zext:
3256 case lltok::kw_sext:
3257 case lltok::kw_fptrunc:
3258 case lltok::kw_fpext:
3259 case lltok::kw_bitcast:
3260 case lltok::kw_uitofp:
3261 case lltok::kw_sitofp:
3262 case lltok::kw_fptoui:
3263 case lltok::kw_fptosi:
3264 case lltok::kw_inttoptr:
3265 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3267 case lltok::kw_select: return ParseSelect(Inst, PFS);
3268 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3269 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3270 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3271 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3272 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3273 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3274 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3275 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3277 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3278 case lltok::kw_load: return ParseLoad(Inst, PFS);
3279 case lltok::kw_store: return ParseStore(Inst, PFS);
3280 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3281 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3282 case lltok::kw_fence: return ParseFence(Inst, PFS);
3283 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3284 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3285 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3289 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3290 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3291 if (Opc == Instruction::FCmp) {
3292 switch (Lex.getKind()) {
3293 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
3294 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3295 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3296 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3297 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3298 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3299 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3300 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3301 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3302 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3303 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3304 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3305 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3306 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3307 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3308 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3309 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3312 switch (Lex.getKind()) {
3313 default: return TokError("expected icmp predicate (e.g. 'eq')");
3314 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3315 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3316 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3317 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3318 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3319 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3320 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3321 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3322 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3323 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3330 //===----------------------------------------------------------------------===//
3331 // Terminator Instructions.
3332 //===----------------------------------------------------------------------===//
3334 /// ParseRet - Parse a return instruction.
3335 /// ::= 'ret' void (',' !dbg, !1)*
3336 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3337 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3338 PerFunctionState &PFS) {
3339 SMLoc TypeLoc = Lex.getLoc();
3341 if (ParseType(Ty, true /*void allowed*/)) return true;
3343 Type *ResType = PFS.getFunction().getReturnType();
3345 if (Ty->isVoidTy()) {
3346 if (!ResType->isVoidTy())
3347 return Error(TypeLoc, "value doesn't match function result type '" +
3348 getTypeString(ResType) + "'");
3350 Inst = ReturnInst::Create(Context);
3355 if (ParseValue(Ty, RV, PFS)) return true;
3357 if (ResType != RV->getType())
3358 return Error(TypeLoc, "value doesn't match function result type '" +
3359 getTypeString(ResType) + "'");
3361 Inst = ReturnInst::Create(Context, RV);
3367 /// ::= 'br' TypeAndValue
3368 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3369 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3372 BasicBlock *Op1, *Op2;
3373 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3375 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3376 Inst = BranchInst::Create(BB);
3380 if (Op0->getType() != Type::getInt1Ty(Context))
3381 return Error(Loc, "branch condition must have 'i1' type");
3383 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3384 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3385 ParseToken(lltok::comma, "expected ',' after true destination") ||
3386 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3389 Inst = BranchInst::Create(Op1, Op2, Op0);
3395 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3397 /// ::= (TypeAndValue ',' TypeAndValue)*
3398 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3399 LocTy CondLoc, BBLoc;
3401 BasicBlock *DefaultBB;
3402 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3403 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3404 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3405 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3408 if (!Cond->getType()->isIntegerTy())
3409 return Error(CondLoc, "switch condition must have integer type");
3411 // Parse the jump table pairs.
3412 SmallPtrSet<Value*, 32> SeenCases;
3413 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3414 while (Lex.getKind() != lltok::rsquare) {
3418 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3419 ParseToken(lltok::comma, "expected ',' after case value") ||
3420 ParseTypeAndBasicBlock(DestBB, PFS))
3423 if (!SeenCases.insert(Constant))
3424 return Error(CondLoc, "duplicate case value in switch");
3425 if (!isa<ConstantInt>(Constant))
3426 return Error(CondLoc, "case value is not a constant integer");
3428 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3431 Lex.Lex(); // Eat the ']'.
3433 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3434 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3435 SI->addCase(Table[i].first, Table[i].second);
3442 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3443 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3446 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3447 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3448 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3451 if (!Address->getType()->isPointerTy())
3452 return Error(AddrLoc, "indirectbr address must have pointer type");
3454 // Parse the destination list.
3455 SmallVector<BasicBlock*, 16> DestList;
3457 if (Lex.getKind() != lltok::rsquare) {
3459 if (ParseTypeAndBasicBlock(DestBB, PFS))
3461 DestList.push_back(DestBB);
3463 while (EatIfPresent(lltok::comma)) {
3464 if (ParseTypeAndBasicBlock(DestBB, PFS))
3466 DestList.push_back(DestBB);
3470 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3473 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3474 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3475 IBI->addDestination(DestList[i]);
3482 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3483 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3484 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3485 LocTy CallLoc = Lex.getLoc();
3486 AttrBuilder RetAttrs, FnAttrs;
3487 std::vector<unsigned> FwdRefAttrGrps;
3493 SmallVector<ParamInfo, 16> ArgList;
3495 BasicBlock *NormalBB, *UnwindBB;
3496 if (ParseOptionalCallingConv(CC) ||
3497 ParseOptionalReturnAttrs(RetAttrs) ||
3498 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3499 ParseValID(CalleeID) ||
3500 ParseParameterList(ArgList, PFS) ||
3501 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3503 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3504 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3505 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3506 ParseTypeAndBasicBlock(UnwindBB, PFS))
3509 // If RetType is a non-function pointer type, then this is the short syntax
3510 // for the call, which means that RetType is just the return type. Infer the
3511 // rest of the function argument types from the arguments that are present.
3512 PointerType *PFTy = 0;
3513 FunctionType *Ty = 0;
3514 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3515 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3516 // Pull out the types of all of the arguments...
3517 std::vector<Type*> ParamTypes;
3518 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3519 ParamTypes.push_back(ArgList[i].V->getType());
3521 if (!FunctionType::isValidReturnType(RetType))
3522 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3524 Ty = FunctionType::get(RetType, ParamTypes, false);
3525 PFTy = PointerType::getUnqual(Ty);
3528 // Look up the callee.
3530 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3532 // Set up the Attribute for the function.
3533 SmallVector<AttributeSet, 8> Attrs;
3534 if (RetAttrs.hasAttributes())
3535 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3536 AttributeSet::ReturnIndex,
3539 SmallVector<Value*, 8> Args;
3541 // Loop through FunctionType's arguments and ensure they are specified
3542 // correctly. Also, gather any parameter attributes.
3543 FunctionType::param_iterator I = Ty->param_begin();
3544 FunctionType::param_iterator E = Ty->param_end();
3545 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3546 Type *ExpectedTy = 0;
3549 } else if (!Ty->isVarArg()) {
3550 return Error(ArgList[i].Loc, "too many arguments specified");
3553 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3554 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3555 getTypeString(ExpectedTy) + "'");
3556 Args.push_back(ArgList[i].V);
3557 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3558 AttrBuilder B(ArgList[i].Attrs, i + 1);
3559 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3564 return Error(CallLoc, "not enough parameters specified for call");
3566 if (FnAttrs.hasAttributes())
3567 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3568 AttributeSet::FunctionIndex,
3571 // Finish off the Attribute and check them
3572 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3574 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3575 II->setCallingConv(CC);
3576 II->setAttributes(PAL);
3577 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
3583 /// ::= 'resume' TypeAndValue
3584 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3585 Value *Exn; LocTy ExnLoc;
3586 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3589 ResumeInst *RI = ResumeInst::Create(Exn);
3594 //===----------------------------------------------------------------------===//
3595 // Binary Operators.
3596 //===----------------------------------------------------------------------===//
3599 /// ::= ArithmeticOps TypeAndValue ',' Value
3601 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3602 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3603 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3604 unsigned Opc, unsigned OperandType) {
3605 LocTy Loc; Value *LHS, *RHS;
3606 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3607 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3608 ParseValue(LHS->getType(), RHS, PFS))
3612 switch (OperandType) {
3613 default: llvm_unreachable("Unknown operand type!");
3614 case 0: // int or FP.
3615 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3616 LHS->getType()->isFPOrFPVectorTy();
3618 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3619 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3623 return Error(Loc, "invalid operand type for instruction");
3625 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3630 /// ::= ArithmeticOps TypeAndValue ',' Value {
3631 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3633 LocTy Loc; Value *LHS, *RHS;
3634 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3635 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3636 ParseValue(LHS->getType(), RHS, PFS))
3639 if (!LHS->getType()->isIntOrIntVectorTy())
3640 return Error(Loc,"instruction requires integer or integer vector operands");
3642 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3648 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3649 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3650 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3652 // Parse the integer/fp comparison predicate.
3656 if (ParseCmpPredicate(Pred, Opc) ||
3657 ParseTypeAndValue(LHS, Loc, PFS) ||
3658 ParseToken(lltok::comma, "expected ',' after compare value") ||
3659 ParseValue(LHS->getType(), RHS, PFS))
3662 if (Opc == Instruction::FCmp) {
3663 if (!LHS->getType()->isFPOrFPVectorTy())
3664 return Error(Loc, "fcmp requires floating point operands");
3665 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3667 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3668 if (!LHS->getType()->isIntOrIntVectorTy() &&
3669 !LHS->getType()->getScalarType()->isPointerTy())
3670 return Error(Loc, "icmp requires integer operands");
3671 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3676 //===----------------------------------------------------------------------===//
3677 // Other Instructions.
3678 //===----------------------------------------------------------------------===//
3682 /// ::= CastOpc TypeAndValue 'to' Type
3683 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3688 if (ParseTypeAndValue(Op, Loc, PFS) ||
3689 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3693 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3694 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3695 return Error(Loc, "invalid cast opcode for cast from '" +
3696 getTypeString(Op->getType()) + "' to '" +
3697 getTypeString(DestTy) + "'");
3699 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3704 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3705 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3707 Value *Op0, *Op1, *Op2;
3708 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3709 ParseToken(lltok::comma, "expected ',' after select condition") ||
3710 ParseTypeAndValue(Op1, PFS) ||
3711 ParseToken(lltok::comma, "expected ',' after select value") ||
3712 ParseTypeAndValue(Op2, PFS))
3715 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3716 return Error(Loc, Reason);
3718 Inst = SelectInst::Create(Op0, Op1, Op2);
3723 /// ::= 'va_arg' TypeAndValue ',' Type
3724 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3728 if (ParseTypeAndValue(Op, PFS) ||
3729 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3730 ParseType(EltTy, TypeLoc))
3733 if (!EltTy->isFirstClassType())
3734 return Error(TypeLoc, "va_arg requires operand with first class type");
3736 Inst = new VAArgInst(Op, EltTy);
3740 /// ParseExtractElement
3741 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3742 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3745 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3746 ParseToken(lltok::comma, "expected ',' after extract value") ||
3747 ParseTypeAndValue(Op1, PFS))
3750 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3751 return Error(Loc, "invalid extractelement operands");
3753 Inst = ExtractElementInst::Create(Op0, Op1);
3757 /// ParseInsertElement
3758 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3759 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3761 Value *Op0, *Op1, *Op2;
3762 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3763 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3764 ParseTypeAndValue(Op1, PFS) ||
3765 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3766 ParseTypeAndValue(Op2, PFS))
3769 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3770 return Error(Loc, "invalid insertelement operands");
3772 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3776 /// ParseShuffleVector
3777 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3778 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3780 Value *Op0, *Op1, *Op2;
3781 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3782 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3783 ParseTypeAndValue(Op1, PFS) ||
3784 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3785 ParseTypeAndValue(Op2, PFS))
3788 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3789 return Error(Loc, "invalid shufflevector operands");
3791 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3796 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3797 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3798 Type *Ty = 0; LocTy TypeLoc;
3801 if (ParseType(Ty, TypeLoc) ||
3802 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3803 ParseValue(Ty, Op0, PFS) ||
3804 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3805 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3806 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3809 bool AteExtraComma = false;
3810 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3812 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3814 if (!EatIfPresent(lltok::comma))
3817 if (Lex.getKind() == lltok::MetadataVar) {
3818 AteExtraComma = true;
3822 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3823 ParseValue(Ty, Op0, PFS) ||
3824 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3825 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3826 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3830 if (!Ty->isFirstClassType())
3831 return Error(TypeLoc, "phi node must have first class type");
3833 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
3834 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3835 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3837 return AteExtraComma ? InstExtraComma : InstNormal;
3841 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
3843 /// ::= 'catch' TypeAndValue
3845 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
3846 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
3847 Type *Ty = 0; LocTy TyLoc;
3848 Value *PersFn; LocTy PersFnLoc;
3850 if (ParseType(Ty, TyLoc) ||
3851 ParseToken(lltok::kw_personality, "expected 'personality'") ||
3852 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
3855 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
3856 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
3858 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
3859 LandingPadInst::ClauseType CT;
3860 if (EatIfPresent(lltok::kw_catch))
3861 CT = LandingPadInst::Catch;
3862 else if (EatIfPresent(lltok::kw_filter))
3863 CT = LandingPadInst::Filter;
3865 return TokError("expected 'catch' or 'filter' clause type");
3867 Value *V; LocTy VLoc;
3868 if (ParseTypeAndValue(V, VLoc, PFS)) {
3873 // A 'catch' type expects a non-array constant. A filter clause expects an
3875 if (CT == LandingPadInst::Catch) {
3876 if (isa<ArrayType>(V->getType()))
3877 Error(VLoc, "'catch' clause has an invalid type");
3879 if (!isa<ArrayType>(V->getType()))
3880 Error(VLoc, "'filter' clause has an invalid type");
3891 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3892 /// ParameterList OptionalAttrs
3893 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3895 AttrBuilder RetAttrs, FnAttrs;
3896 std::vector<unsigned> FwdRefAttrGrps;
3902 SmallVector<ParamInfo, 16> ArgList;
3903 LocTy CallLoc = Lex.getLoc();
3905 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3906 ParseOptionalCallingConv(CC) ||
3907 ParseOptionalReturnAttrs(RetAttrs) ||
3908 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3909 ParseValID(CalleeID) ||
3910 ParseParameterList(ArgList, PFS) ||
3911 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3915 // If RetType is a non-function pointer type, then this is the short syntax
3916 // for the call, which means that RetType is just the return type. Infer the
3917 // rest of the function argument types from the arguments that are present.
3918 PointerType *PFTy = 0;
3919 FunctionType *Ty = 0;
3920 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3921 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3922 // Pull out the types of all of the arguments...
3923 std::vector<Type*> ParamTypes;
3924 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3925 ParamTypes.push_back(ArgList[i].V->getType());
3927 if (!FunctionType::isValidReturnType(RetType))
3928 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3930 Ty = FunctionType::get(RetType, ParamTypes, false);
3931 PFTy = PointerType::getUnqual(Ty);
3934 // Look up the callee.
3936 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3938 // Set up the Attribute for the function.
3939 SmallVector<AttributeSet, 8> Attrs;
3940 if (RetAttrs.hasAttributes())
3941 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3942 AttributeSet::ReturnIndex,
3945 SmallVector<Value*, 8> Args;
3947 // Loop through FunctionType's arguments and ensure they are specified
3948 // correctly. Also, gather any parameter attributes.
3949 FunctionType::param_iterator I = Ty->param_begin();
3950 FunctionType::param_iterator E = Ty->param_end();
3951 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3952 Type *ExpectedTy = 0;
3955 } else if (!Ty->isVarArg()) {
3956 return Error(ArgList[i].Loc, "too many arguments specified");
3959 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3960 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3961 getTypeString(ExpectedTy) + "'");
3962 Args.push_back(ArgList[i].V);
3963 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3964 AttrBuilder B(ArgList[i].Attrs, i + 1);
3965 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3970 return Error(CallLoc, "not enough parameters specified for call");
3972 if (FnAttrs.hasAttributes())
3973 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3974 AttributeSet::FunctionIndex,
3977 // Finish off the Attribute and check them
3978 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3980 CallInst *CI = CallInst::Create(Callee, Args);
3981 CI->setTailCall(isTail);
3982 CI->setCallingConv(CC);
3983 CI->setAttributes(PAL);
3984 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
3989 //===----------------------------------------------------------------------===//
3990 // Memory Instructions.
3991 //===----------------------------------------------------------------------===//
3994 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3995 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
3998 unsigned Alignment = 0;
4000 if (ParseType(Ty)) return true;
4002 bool AteExtraComma = false;
4003 if (EatIfPresent(lltok::comma)) {
4004 if (Lex.getKind() == lltok::kw_align) {
4005 if (ParseOptionalAlignment(Alignment)) return true;
4006 } else if (Lex.getKind() == lltok::MetadataVar) {
4007 AteExtraComma = true;
4009 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
4010 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4015 if (Size && !Size->getType()->isIntegerTy())
4016 return Error(SizeLoc, "element count must have integer type");
4018 Inst = new AllocaInst(Ty, Size, Alignment);
4019 return AteExtraComma ? InstExtraComma : InstNormal;
4023 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
4024 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
4025 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4026 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
4027 Value *Val; LocTy Loc;
4028 unsigned Alignment = 0;
4029 bool AteExtraComma = false;
4030 bool isAtomic = false;
4031 AtomicOrdering Ordering = NotAtomic;
4032 SynchronizationScope Scope = CrossThread;
4034 if (Lex.getKind() == lltok::kw_atomic) {
4039 bool isVolatile = false;
4040 if (Lex.getKind() == lltok::kw_volatile) {
4045 if (ParseTypeAndValue(Val, Loc, PFS) ||
4046 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4047 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4050 if (!Val->getType()->isPointerTy() ||
4051 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
4052 return Error(Loc, "load operand must be a pointer to a first class type");
4053 if (isAtomic && !Alignment)
4054 return Error(Loc, "atomic load must have explicit non-zero alignment");
4055 if (Ordering == Release || Ordering == AcquireRelease)
4056 return Error(Loc, "atomic load cannot use Release ordering");
4058 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
4059 return AteExtraComma ? InstExtraComma : InstNormal;
4064 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
4065 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
4066 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4067 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
4068 Value *Val, *Ptr; LocTy Loc, PtrLoc;
4069 unsigned Alignment = 0;
4070 bool AteExtraComma = false;
4071 bool isAtomic = false;
4072 AtomicOrdering Ordering = NotAtomic;
4073 SynchronizationScope Scope = CrossThread;
4075 if (Lex.getKind() == lltok::kw_atomic) {
4080 bool isVolatile = false;
4081 if (Lex.getKind() == lltok::kw_volatile) {
4086 if (ParseTypeAndValue(Val, Loc, PFS) ||
4087 ParseToken(lltok::comma, "expected ',' after store operand") ||
4088 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4089 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4090 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4093 if (!Ptr->getType()->isPointerTy())
4094 return Error(PtrLoc, "store operand must be a pointer");
4095 if (!Val->getType()->isFirstClassType())
4096 return Error(Loc, "store operand must be a first class value");
4097 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4098 return Error(Loc, "stored value and pointer type do not match");
4099 if (isAtomic && !Alignment)
4100 return Error(Loc, "atomic store must have explicit non-zero alignment");
4101 if (Ordering == Acquire || Ordering == AcquireRelease)
4102 return Error(Loc, "atomic store cannot use Acquire ordering");
4104 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
4105 return AteExtraComma ? InstExtraComma : InstNormal;
4109 /// ::= 'cmpxchg' 'volatile'? TypeAndValue ',' TypeAndValue ',' TypeAndValue
4110 /// 'singlethread'? AtomicOrdering
4111 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
4112 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
4113 bool AteExtraComma = false;
4114 AtomicOrdering Ordering = NotAtomic;
4115 SynchronizationScope Scope = CrossThread;
4116 bool isVolatile = false;
4118 if (EatIfPresent(lltok::kw_volatile))
4121 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4122 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
4123 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
4124 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
4125 ParseTypeAndValue(New, NewLoc, PFS) ||
4126 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4129 if (Ordering == Unordered)
4130 return TokError("cmpxchg cannot be unordered");
4131 if (!Ptr->getType()->isPointerTy())
4132 return Error(PtrLoc, "cmpxchg operand must be a pointer");
4133 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
4134 return Error(CmpLoc, "compare value and pointer type do not match");
4135 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
4136 return Error(NewLoc, "new value and pointer type do not match");
4137 if (!New->getType()->isIntegerTy())
4138 return Error(NewLoc, "cmpxchg operand must be an integer");
4139 unsigned Size = New->getType()->getPrimitiveSizeInBits();
4140 if (Size < 8 || (Size & (Size - 1)))
4141 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
4144 AtomicCmpXchgInst *CXI =
4145 new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, Scope);
4146 CXI->setVolatile(isVolatile);
4148 return AteExtraComma ? InstExtraComma : InstNormal;
4152 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
4153 /// 'singlethread'? AtomicOrdering
4154 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
4155 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
4156 bool AteExtraComma = false;
4157 AtomicOrdering Ordering = NotAtomic;
4158 SynchronizationScope Scope = CrossThread;
4159 bool isVolatile = false;
4160 AtomicRMWInst::BinOp Operation;
4162 if (EatIfPresent(lltok::kw_volatile))
4165 switch (Lex.getKind()) {
4166 default: return TokError("expected binary operation in atomicrmw");
4167 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
4168 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
4169 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
4170 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
4171 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
4172 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
4173 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
4174 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
4175 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
4176 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
4177 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
4179 Lex.Lex(); // Eat the operation.
4181 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4182 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
4183 ParseTypeAndValue(Val, ValLoc, PFS) ||
4184 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4187 if (Ordering == Unordered)
4188 return TokError("atomicrmw cannot be unordered");
4189 if (!Ptr->getType()->isPointerTy())
4190 return Error(PtrLoc, "atomicrmw operand must be a pointer");
4191 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4192 return Error(ValLoc, "atomicrmw value and pointer type do not match");
4193 if (!Val->getType()->isIntegerTy())
4194 return Error(ValLoc, "atomicrmw operand must be an integer");
4195 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
4196 if (Size < 8 || (Size & (Size - 1)))
4197 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
4200 AtomicRMWInst *RMWI =
4201 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
4202 RMWI->setVolatile(isVolatile);
4204 return AteExtraComma ? InstExtraComma : InstNormal;
4208 /// ::= 'fence' 'singlethread'? AtomicOrdering
4209 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
4210 AtomicOrdering Ordering = NotAtomic;
4211 SynchronizationScope Scope = CrossThread;
4212 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4215 if (Ordering == Unordered)
4216 return TokError("fence cannot be unordered");
4217 if (Ordering == Monotonic)
4218 return TokError("fence cannot be monotonic");
4220 Inst = new FenceInst(Context, Ordering, Scope);
4224 /// ParseGetElementPtr
4225 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
4226 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
4231 bool InBounds = EatIfPresent(lltok::kw_inbounds);
4233 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4235 if (!Ptr->getType()->getScalarType()->isPointerTy())
4236 return Error(Loc, "base of getelementptr must be a pointer");
4238 SmallVector<Value*, 16> Indices;
4239 bool AteExtraComma = false;
4240 while (EatIfPresent(lltok::comma)) {
4241 if (Lex.getKind() == lltok::MetadataVar) {
4242 AteExtraComma = true;
4245 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4246 if (!Val->getType()->getScalarType()->isIntegerTy())
4247 return Error(EltLoc, "getelementptr index must be an integer");
4248 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4249 return Error(EltLoc, "getelementptr index type missmatch");
4250 if (Val->getType()->isVectorTy()) {
4251 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4252 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4253 if (ValNumEl != PtrNumEl)
4254 return Error(EltLoc,
4255 "getelementptr vector index has a wrong number of elements");
4257 Indices.push_back(Val);
4260 if (!GetElementPtrInst::getIndexedType(Ptr->getType(), Indices))
4261 return Error(Loc, "invalid getelementptr indices");
4262 Inst = GetElementPtrInst::Create(Ptr, Indices);
4264 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4265 return AteExtraComma ? InstExtraComma : InstNormal;
4268 /// ParseExtractValue
4269 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4270 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4271 Value *Val; LocTy Loc;
4272 SmallVector<unsigned, 4> Indices;
4274 if (ParseTypeAndValue(Val, Loc, PFS) ||
4275 ParseIndexList(Indices, AteExtraComma))
4278 if (!Val->getType()->isAggregateType())
4279 return Error(Loc, "extractvalue operand must be aggregate type");
4281 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4282 return Error(Loc, "invalid indices for extractvalue");
4283 Inst = ExtractValueInst::Create(Val, Indices);
4284 return AteExtraComma ? InstExtraComma : InstNormal;
4287 /// ParseInsertValue
4288 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4289 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4290 Value *Val0, *Val1; LocTy Loc0, Loc1;
4291 SmallVector<unsigned, 4> Indices;
4293 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4294 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4295 ParseTypeAndValue(Val1, Loc1, PFS) ||
4296 ParseIndexList(Indices, AteExtraComma))
4299 if (!Val0->getType()->isAggregateType())
4300 return Error(Loc0, "insertvalue operand must be aggregate type");
4302 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4303 return Error(Loc0, "invalid indices for insertvalue");
4304 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4305 return AteExtraComma ? InstExtraComma : InstNormal;
4308 //===----------------------------------------------------------------------===//
4309 // Embedded metadata.
4310 //===----------------------------------------------------------------------===//
4312 /// ParseMDNodeVector
4313 /// ::= Element (',' Element)*
4315 /// ::= 'null' | TypeAndValue
4316 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4317 PerFunctionState *PFS) {
4318 // Check for an empty list.
4319 if (Lex.getKind() == lltok::rbrace)
4323 // Null is a special case since it is typeless.
4324 if (EatIfPresent(lltok::kw_null)) {
4330 if (ParseTypeAndValue(V, PFS)) return true;
4332 } while (EatIfPresent(lltok::comma));