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, None);
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 function alignment to be initially parsed as an
882 // attribute on a function declaration/definition or added to an attribute
883 // group and later moved to the alignment field.
887 if (ParseToken(lltok::equal, "expected '=' here") ||
888 ParseUInt32(Alignment))
891 if (ParseOptionalAlignment(Alignment))
894 B.addAlignmentAttr(Alignment);
897 case lltok::kw_alignstack: {
901 if (ParseToken(lltok::equal, "expected '=' here") ||
902 ParseUInt32(Alignment))
905 if (ParseOptionalStackAlignment(Alignment))
908 B.addStackAlignmentAttr(Alignment);
911 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
912 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
913 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
914 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
915 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
916 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
917 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
918 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
919 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
920 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
921 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
922 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
923 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
924 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
925 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
926 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
927 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
928 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
929 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
930 case lltok::kw_sanitize_address: B.addAttribute(Attribute::SanitizeAddress); break;
931 case lltok::kw_sanitize_thread: B.addAttribute(Attribute::SanitizeThread); break;
932 case lltok::kw_sanitize_memory: B.addAttribute(Attribute::SanitizeMemory); break;
933 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
936 case lltok::kw_inreg:
937 case lltok::kw_signext:
938 case lltok::kw_zeroext:
941 "invalid use of attribute on a function");
943 case lltok::kw_byval:
945 case lltok::kw_noalias:
946 case lltok::kw_nocapture:
947 case lltok::kw_returned:
951 "invalid use of parameter-only attribute on a function");
959 //===----------------------------------------------------------------------===//
960 // GlobalValue Reference/Resolution Routines.
961 //===----------------------------------------------------------------------===//
963 /// GetGlobalVal - Get a value with the specified name or ID, creating a
964 /// forward reference record if needed. This can return null if the value
965 /// exists but does not have the right type.
966 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
968 PointerType *PTy = dyn_cast<PointerType>(Ty);
970 Error(Loc, "global variable reference must have pointer type");
974 // Look this name up in the normal function symbol table.
976 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
978 // If this is a forward reference for the value, see if we already created a
979 // forward ref record.
981 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
982 I = ForwardRefVals.find(Name);
983 if (I != ForwardRefVals.end())
984 Val = I->second.first;
987 // If we have the value in the symbol table or fwd-ref table, return it.
989 if (Val->getType() == Ty) return Val;
990 Error(Loc, "'@" + Name + "' defined with type '" +
991 getTypeString(Val->getType()) + "'");
995 // Otherwise, create a new forward reference for this value and remember it.
997 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
998 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1000 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1001 GlobalValue::ExternalWeakLinkage, 0, Name,
1002 0, GlobalVariable::NotThreadLocal,
1003 PTy->getAddressSpace());
1005 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1009 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1010 PointerType *PTy = dyn_cast<PointerType>(Ty);
1012 Error(Loc, "global variable reference must have pointer type");
1016 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1018 // If this is a forward reference for the value, see if we already created a
1019 // forward ref record.
1021 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1022 I = ForwardRefValIDs.find(ID);
1023 if (I != ForwardRefValIDs.end())
1024 Val = I->second.first;
1027 // If we have the value in the symbol table or fwd-ref table, return it.
1029 if (Val->getType() == Ty) return Val;
1030 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1031 getTypeString(Val->getType()) + "'");
1035 // Otherwise, create a new forward reference for this value and remember it.
1036 GlobalValue *FwdVal;
1037 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1038 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1040 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1041 GlobalValue::ExternalWeakLinkage, 0, "");
1043 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1048 //===----------------------------------------------------------------------===//
1050 //===----------------------------------------------------------------------===//
1052 /// ParseToken - If the current token has the specified kind, eat it and return
1053 /// success. Otherwise, emit the specified error and return failure.
1054 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1055 if (Lex.getKind() != T)
1056 return TokError(ErrMsg);
1061 /// ParseStringConstant
1062 /// ::= StringConstant
1063 bool LLParser::ParseStringConstant(std::string &Result) {
1064 if (Lex.getKind() != lltok::StringConstant)
1065 return TokError("expected string constant");
1066 Result = Lex.getStrVal();
1073 bool LLParser::ParseUInt32(unsigned &Val) {
1074 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1075 return TokError("expected integer");
1076 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1077 if (Val64 != unsigned(Val64))
1078 return TokError("expected 32-bit integer (too large)");
1085 /// := 'localdynamic'
1086 /// := 'initialexec'
1088 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1089 switch (Lex.getKind()) {
1091 return TokError("expected localdynamic, initialexec or localexec");
1092 case lltok::kw_localdynamic:
1093 TLM = GlobalVariable::LocalDynamicTLSModel;
1095 case lltok::kw_initialexec:
1096 TLM = GlobalVariable::InitialExecTLSModel;
1098 case lltok::kw_localexec:
1099 TLM = GlobalVariable::LocalExecTLSModel;
1107 /// ParseOptionalThreadLocal
1109 /// := 'thread_local'
1110 /// := 'thread_local' '(' tlsmodel ')'
1111 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1112 TLM = GlobalVariable::NotThreadLocal;
1113 if (!EatIfPresent(lltok::kw_thread_local))
1116 TLM = GlobalVariable::GeneralDynamicTLSModel;
1117 if (Lex.getKind() == lltok::lparen) {
1119 return ParseTLSModel(TLM) ||
1120 ParseToken(lltok::rparen, "expected ')' after thread local model");
1125 /// ParseOptionalAddrSpace
1127 /// := 'addrspace' '(' uint32 ')'
1128 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1130 if (!EatIfPresent(lltok::kw_addrspace))
1132 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1133 ParseUInt32(AddrSpace) ||
1134 ParseToken(lltok::rparen, "expected ')' in address space");
1137 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1138 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1139 bool HaveError = false;
1144 lltok::Kind Token = Lex.getKind();
1146 default: // End of attributes.
1148 case lltok::kw_align: {
1150 if (ParseOptionalAlignment(Alignment))
1152 B.addAlignmentAttr(Alignment);
1155 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1156 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1157 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1158 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1159 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1160 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1161 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1162 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1163 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1165 case lltok::kw_alignstack:
1166 case lltok::kw_alwaysinline:
1167 case lltok::kw_inlinehint:
1168 case lltok::kw_minsize:
1169 case lltok::kw_naked:
1170 case lltok::kw_nobuiltin:
1171 case lltok::kw_noduplicate:
1172 case lltok::kw_noimplicitfloat:
1173 case lltok::kw_noinline:
1174 case lltok::kw_nonlazybind:
1175 case lltok::kw_noredzone:
1176 case lltok::kw_noreturn:
1177 case lltok::kw_nounwind:
1178 case lltok::kw_optsize:
1179 case lltok::kw_readnone:
1180 case lltok::kw_readonly:
1181 case lltok::kw_returns_twice:
1182 case lltok::kw_sanitize_address:
1183 case lltok::kw_sanitize_memory:
1184 case lltok::kw_sanitize_thread:
1186 case lltok::kw_sspreq:
1187 case lltok::kw_sspstrong:
1188 case lltok::kw_uwtable:
1189 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1197 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1198 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1199 bool HaveError = false;
1204 lltok::Kind Token = Lex.getKind();
1206 default: // End of attributes.
1208 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1209 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1210 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1211 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1214 case lltok::kw_align:
1215 case lltok::kw_byval:
1216 case lltok::kw_nest:
1217 case lltok::kw_nocapture:
1218 case lltok::kw_returned:
1219 case lltok::kw_sret:
1220 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1223 case lltok::kw_alignstack:
1224 case lltok::kw_alwaysinline:
1225 case lltok::kw_inlinehint:
1226 case lltok::kw_minsize:
1227 case lltok::kw_naked:
1228 case lltok::kw_nobuiltin:
1229 case lltok::kw_noduplicate:
1230 case lltok::kw_noimplicitfloat:
1231 case lltok::kw_noinline:
1232 case lltok::kw_nonlazybind:
1233 case lltok::kw_noredzone:
1234 case lltok::kw_noreturn:
1235 case lltok::kw_nounwind:
1236 case lltok::kw_optsize:
1237 case lltok::kw_readnone:
1238 case lltok::kw_readonly:
1239 case lltok::kw_returns_twice:
1240 case lltok::kw_sanitize_address:
1241 case lltok::kw_sanitize_memory:
1242 case lltok::kw_sanitize_thread:
1244 case lltok::kw_sspreq:
1245 case lltok::kw_sspstrong:
1246 case lltok::kw_uwtable:
1247 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1255 /// ParseOptionalLinkage
1258 /// ::= 'linker_private'
1259 /// ::= 'linker_private_weak'
1264 /// ::= 'linkonce_odr'
1265 /// ::= 'linkonce_odr_auto_hide'
1266 /// ::= 'available_externally'
1271 /// ::= 'extern_weak'
1273 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1275 switch (Lex.getKind()) {
1276 default: Res=GlobalValue::ExternalLinkage; return false;
1277 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1278 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1279 case lltok::kw_linker_private_weak:
1280 Res = GlobalValue::LinkerPrivateWeakLinkage;
1282 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1283 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1284 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1285 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1286 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1287 case lltok::kw_linkonce_odr_auto_hide:
1288 case lltok::kw_linker_private_weak_def_auto: // FIXME: For backwards compat.
1289 Res = GlobalValue::LinkOnceODRAutoHideLinkage;
1291 case lltok::kw_available_externally:
1292 Res = GlobalValue::AvailableExternallyLinkage;
1294 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1295 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1296 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1297 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1298 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1299 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1306 /// ParseOptionalVisibility
1312 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1313 switch (Lex.getKind()) {
1314 default: Res = GlobalValue::DefaultVisibility; return false;
1315 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1316 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1317 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1323 /// ParseOptionalCallingConv
1327 /// ::= 'kw_intel_ocl_bicc'
1329 /// ::= 'x86_stdcallcc'
1330 /// ::= 'x86_fastcallcc'
1331 /// ::= 'x86_thiscallcc'
1332 /// ::= 'arm_apcscc'
1333 /// ::= 'arm_aapcscc'
1334 /// ::= 'arm_aapcs_vfpcc'
1335 /// ::= 'msp430_intrcc'
1336 /// ::= 'ptx_kernel'
1337 /// ::= 'ptx_device'
1339 /// ::= 'spir_kernel'
1340 /// ::= 'x86_64_sysvcc'
1341 /// ::= 'x86_64_win64cc'
1344 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1345 switch (Lex.getKind()) {
1346 default: CC = CallingConv::C; return false;
1347 case lltok::kw_ccc: CC = CallingConv::C; break;
1348 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1349 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1350 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1351 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1352 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1353 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1354 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1355 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1356 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1357 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1358 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1359 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1360 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1361 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1362 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1363 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1364 case lltok::kw_cc: {
1365 unsigned ArbitraryCC;
1367 if (ParseUInt32(ArbitraryCC))
1369 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1378 /// ParseInstructionMetadata
1379 /// ::= !dbg !42 (',' !dbg !57)*
1380 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1381 PerFunctionState *PFS) {
1383 if (Lex.getKind() != lltok::MetadataVar)
1384 return TokError("expected metadata after comma");
1386 std::string Name = Lex.getStrVal();
1387 unsigned MDK = M->getMDKindID(Name);
1391 SMLoc Loc = Lex.getLoc();
1393 if (ParseToken(lltok::exclaim, "expected '!' here"))
1396 // This code is similar to that of ParseMetadataValue, however it needs to
1397 // have special-case code for a forward reference; see the comments on
1398 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1399 // at the top level here.
1400 if (Lex.getKind() == lltok::lbrace) {
1402 if (ParseMetadataListValue(ID, PFS))
1404 assert(ID.Kind == ValID::t_MDNode);
1405 Inst->setMetadata(MDK, ID.MDNodeVal);
1407 unsigned NodeID = 0;
1408 if (ParseMDNodeID(Node, NodeID))
1411 // If we got the node, add it to the instruction.
1412 Inst->setMetadata(MDK, Node);
1414 MDRef R = { Loc, MDK, NodeID };
1415 // Otherwise, remember that this should be resolved later.
1416 ForwardRefInstMetadata[Inst].push_back(R);
1420 // If this is the end of the list, we're done.
1421 } while (EatIfPresent(lltok::comma));
1425 /// ParseOptionalAlignment
1428 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1430 if (!EatIfPresent(lltok::kw_align))
1432 LocTy AlignLoc = Lex.getLoc();
1433 if (ParseUInt32(Alignment)) return true;
1434 if (!isPowerOf2_32(Alignment))
1435 return Error(AlignLoc, "alignment is not a power of two");
1436 if (Alignment > Value::MaximumAlignment)
1437 return Error(AlignLoc, "huge alignments are not supported yet");
1441 /// ParseOptionalCommaAlign
1445 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1447 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1448 bool &AteExtraComma) {
1449 AteExtraComma = false;
1450 while (EatIfPresent(lltok::comma)) {
1451 // Metadata at the end is an early exit.
1452 if (Lex.getKind() == lltok::MetadataVar) {
1453 AteExtraComma = true;
1457 if (Lex.getKind() != lltok::kw_align)
1458 return Error(Lex.getLoc(), "expected metadata or 'align'");
1460 if (ParseOptionalAlignment(Alignment)) return true;
1466 /// ParseScopeAndOrdering
1467 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1470 /// This sets Scope and Ordering to the parsed values.
1471 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1472 AtomicOrdering &Ordering) {
1476 Scope = CrossThread;
1477 if (EatIfPresent(lltok::kw_singlethread))
1478 Scope = SingleThread;
1479 switch (Lex.getKind()) {
1480 default: return TokError("Expected ordering on atomic instruction");
1481 case lltok::kw_unordered: Ordering = Unordered; break;
1482 case lltok::kw_monotonic: Ordering = Monotonic; break;
1483 case lltok::kw_acquire: Ordering = Acquire; break;
1484 case lltok::kw_release: Ordering = Release; break;
1485 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1486 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1492 /// ParseOptionalStackAlignment
1494 /// ::= 'alignstack' '(' 4 ')'
1495 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1497 if (!EatIfPresent(lltok::kw_alignstack))
1499 LocTy ParenLoc = Lex.getLoc();
1500 if (!EatIfPresent(lltok::lparen))
1501 return Error(ParenLoc, "expected '('");
1502 LocTy AlignLoc = Lex.getLoc();
1503 if (ParseUInt32(Alignment)) return true;
1504 ParenLoc = Lex.getLoc();
1505 if (!EatIfPresent(lltok::rparen))
1506 return Error(ParenLoc, "expected ')'");
1507 if (!isPowerOf2_32(Alignment))
1508 return Error(AlignLoc, "stack alignment is not a power of two");
1512 /// ParseIndexList - This parses the index list for an insert/extractvalue
1513 /// instruction. This sets AteExtraComma in the case where we eat an extra
1514 /// comma at the end of the line and find that it is followed by metadata.
1515 /// Clients that don't allow metadata can call the version of this function that
1516 /// only takes one argument.
1519 /// ::= (',' uint32)+
1521 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1522 bool &AteExtraComma) {
1523 AteExtraComma = false;
1525 if (Lex.getKind() != lltok::comma)
1526 return TokError("expected ',' as start of index list");
1528 while (EatIfPresent(lltok::comma)) {
1529 if (Lex.getKind() == lltok::MetadataVar) {
1530 AteExtraComma = true;
1534 if (ParseUInt32(Idx)) return true;
1535 Indices.push_back(Idx);
1541 //===----------------------------------------------------------------------===//
1543 //===----------------------------------------------------------------------===//
1545 /// ParseType - Parse a type.
1546 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1547 SMLoc TypeLoc = Lex.getLoc();
1548 switch (Lex.getKind()) {
1550 return TokError("expected type");
1552 // Type ::= 'float' | 'void' (etc)
1553 Result = Lex.getTyVal();
1557 // Type ::= StructType
1558 if (ParseAnonStructType(Result, false))
1561 case lltok::lsquare:
1562 // Type ::= '[' ... ']'
1563 Lex.Lex(); // eat the lsquare.
1564 if (ParseArrayVectorType(Result, false))
1567 case lltok::less: // Either vector or packed struct.
1568 // Type ::= '<' ... '>'
1570 if (Lex.getKind() == lltok::lbrace) {
1571 if (ParseAnonStructType(Result, true) ||
1572 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1574 } else if (ParseArrayVectorType(Result, true))
1577 case lltok::LocalVar: {
1579 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1581 // If the type hasn't been defined yet, create a forward definition and
1582 // remember where that forward def'n was seen (in case it never is defined).
1583 if (Entry.first == 0) {
1584 Entry.first = StructType::create(Context, Lex.getStrVal());
1585 Entry.second = Lex.getLoc();
1587 Result = Entry.first;
1592 case lltok::LocalVarID: {
1594 if (Lex.getUIntVal() >= NumberedTypes.size())
1595 NumberedTypes.resize(Lex.getUIntVal()+1);
1596 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1598 // If the type hasn't been defined yet, create a forward definition and
1599 // remember where that forward def'n was seen (in case it never is defined).
1600 if (Entry.first == 0) {
1601 Entry.first = StructType::create(Context);
1602 Entry.second = Lex.getLoc();
1604 Result = Entry.first;
1610 // Parse the type suffixes.
1612 switch (Lex.getKind()) {
1615 if (!AllowVoid && Result->isVoidTy())
1616 return Error(TypeLoc, "void type only allowed for function results");
1619 // Type ::= Type '*'
1621 if (Result->isLabelTy())
1622 return TokError("basic block pointers are invalid");
1623 if (Result->isVoidTy())
1624 return TokError("pointers to void are invalid - use i8* instead");
1625 if (!PointerType::isValidElementType(Result))
1626 return TokError("pointer to this type is invalid");
1627 Result = PointerType::getUnqual(Result);
1631 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1632 case lltok::kw_addrspace: {
1633 if (Result->isLabelTy())
1634 return TokError("basic block pointers are invalid");
1635 if (Result->isVoidTy())
1636 return TokError("pointers to void are invalid; use i8* instead");
1637 if (!PointerType::isValidElementType(Result))
1638 return TokError("pointer to this type is invalid");
1640 if (ParseOptionalAddrSpace(AddrSpace) ||
1641 ParseToken(lltok::star, "expected '*' in address space"))
1644 Result = PointerType::get(Result, AddrSpace);
1648 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1650 if (ParseFunctionType(Result))
1657 /// ParseParameterList
1659 /// ::= '(' Arg (',' Arg)* ')'
1661 /// ::= Type OptionalAttributes Value OptionalAttributes
1662 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1663 PerFunctionState &PFS) {
1664 if (ParseToken(lltok::lparen, "expected '(' in call"))
1667 unsigned AttrIndex = 1;
1668 while (Lex.getKind() != lltok::rparen) {
1669 // If this isn't the first argument, we need a comma.
1670 if (!ArgList.empty() &&
1671 ParseToken(lltok::comma, "expected ',' in argument list"))
1674 // Parse the argument.
1677 AttrBuilder ArgAttrs;
1679 if (ParseType(ArgTy, ArgLoc))
1682 // Otherwise, handle normal operands.
1683 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1685 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1690 Lex.Lex(); // Lex the ')'.
1696 /// ParseArgumentList - Parse the argument list for a function type or function
1698 /// ::= '(' ArgTypeListI ')'
1702 /// ::= ArgTypeList ',' '...'
1703 /// ::= ArgType (',' ArgType)*
1705 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1708 assert(Lex.getKind() == lltok::lparen);
1709 Lex.Lex(); // eat the (.
1711 if (Lex.getKind() == lltok::rparen) {
1713 } else if (Lex.getKind() == lltok::dotdotdot) {
1717 LocTy TypeLoc = Lex.getLoc();
1722 if (ParseType(ArgTy) ||
1723 ParseOptionalParamAttrs(Attrs)) return true;
1725 if (ArgTy->isVoidTy())
1726 return Error(TypeLoc, "argument can not have void type");
1728 if (Lex.getKind() == lltok::LocalVar) {
1729 Name = Lex.getStrVal();
1733 if (!FunctionType::isValidArgumentType(ArgTy))
1734 return Error(TypeLoc, "invalid type for function argument");
1736 unsigned AttrIndex = 1;
1737 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1738 AttributeSet::get(ArgTy->getContext(),
1739 AttrIndex++, Attrs), Name));
1741 while (EatIfPresent(lltok::comma)) {
1742 // Handle ... at end of arg list.
1743 if (EatIfPresent(lltok::dotdotdot)) {
1748 // Otherwise must be an argument type.
1749 TypeLoc = Lex.getLoc();
1750 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1752 if (ArgTy->isVoidTy())
1753 return Error(TypeLoc, "argument can not have void type");
1755 if (Lex.getKind() == lltok::LocalVar) {
1756 Name = Lex.getStrVal();
1762 if (!ArgTy->isFirstClassType())
1763 return Error(TypeLoc, "invalid type for function argument");
1765 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1766 AttributeSet::get(ArgTy->getContext(),
1767 AttrIndex++, Attrs),
1772 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1775 /// ParseFunctionType
1776 /// ::= Type ArgumentList OptionalAttrs
1777 bool LLParser::ParseFunctionType(Type *&Result) {
1778 assert(Lex.getKind() == lltok::lparen);
1780 if (!FunctionType::isValidReturnType(Result))
1781 return TokError("invalid function return type");
1783 SmallVector<ArgInfo, 8> ArgList;
1785 if (ParseArgumentList(ArgList, isVarArg))
1788 // Reject names on the arguments lists.
1789 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1790 if (!ArgList[i].Name.empty())
1791 return Error(ArgList[i].Loc, "argument name invalid in function type");
1792 if (ArgList[i].Attrs.hasAttributes(i + 1))
1793 return Error(ArgList[i].Loc,
1794 "argument attributes invalid in function type");
1797 SmallVector<Type*, 16> ArgListTy;
1798 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1799 ArgListTy.push_back(ArgList[i].Ty);
1801 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1805 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1807 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1808 SmallVector<Type*, 8> Elts;
1809 if (ParseStructBody(Elts)) return true;
1811 Result = StructType::get(Context, Elts, Packed);
1815 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1816 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1817 std::pair<Type*, LocTy> &Entry,
1819 // If the type was already defined, diagnose the redefinition.
1820 if (Entry.first && !Entry.second.isValid())
1821 return Error(TypeLoc, "redefinition of type");
1823 // If we have opaque, just return without filling in the definition for the
1824 // struct. This counts as a definition as far as the .ll file goes.
1825 if (EatIfPresent(lltok::kw_opaque)) {
1826 // This type is being defined, so clear the location to indicate this.
1827 Entry.second = SMLoc();
1829 // If this type number has never been uttered, create it.
1830 if (Entry.first == 0)
1831 Entry.first = StructType::create(Context, Name);
1832 ResultTy = Entry.first;
1836 // If the type starts with '<', then it is either a packed struct or a vector.
1837 bool isPacked = EatIfPresent(lltok::less);
1839 // If we don't have a struct, then we have a random type alias, which we
1840 // accept for compatibility with old files. These types are not allowed to be
1841 // forward referenced and not allowed to be recursive.
1842 if (Lex.getKind() != lltok::lbrace) {
1844 return Error(TypeLoc, "forward references to non-struct type");
1848 return ParseArrayVectorType(ResultTy, true);
1849 return ParseType(ResultTy);
1852 // This type is being defined, so clear the location to indicate this.
1853 Entry.second = SMLoc();
1855 // If this type number has never been uttered, create it.
1856 if (Entry.first == 0)
1857 Entry.first = StructType::create(Context, Name);
1859 StructType *STy = cast<StructType>(Entry.first);
1861 SmallVector<Type*, 8> Body;
1862 if (ParseStructBody(Body) ||
1863 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
1866 STy->setBody(Body, isPacked);
1872 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1875 /// ::= '{' Type (',' Type)* '}'
1876 /// ::= '<' '{' '}' '>'
1877 /// ::= '<' '{' Type (',' Type)* '}' '>'
1878 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
1879 assert(Lex.getKind() == lltok::lbrace);
1880 Lex.Lex(); // Consume the '{'
1882 // Handle the empty struct.
1883 if (EatIfPresent(lltok::rbrace))
1886 LocTy EltTyLoc = Lex.getLoc();
1888 if (ParseType(Ty)) return true;
1891 if (!StructType::isValidElementType(Ty))
1892 return Error(EltTyLoc, "invalid element type for struct");
1894 while (EatIfPresent(lltok::comma)) {
1895 EltTyLoc = Lex.getLoc();
1896 if (ParseType(Ty)) return true;
1898 if (!StructType::isValidElementType(Ty))
1899 return Error(EltTyLoc, "invalid element type for struct");
1904 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
1907 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1908 /// token has already been consumed.
1910 /// ::= '[' APSINTVAL 'x' Types ']'
1911 /// ::= '<' APSINTVAL 'x' Types '>'
1912 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
1913 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1914 Lex.getAPSIntVal().getBitWidth() > 64)
1915 return TokError("expected number in address space");
1917 LocTy SizeLoc = Lex.getLoc();
1918 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1921 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1924 LocTy TypeLoc = Lex.getLoc();
1926 if (ParseType(EltTy)) return true;
1928 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1929 "expected end of sequential type"))
1934 return Error(SizeLoc, "zero element vector is illegal");
1935 if ((unsigned)Size != Size)
1936 return Error(SizeLoc, "size too large for vector");
1937 if (!VectorType::isValidElementType(EltTy))
1938 return Error(TypeLoc, "invalid vector element type");
1939 Result = VectorType::get(EltTy, unsigned(Size));
1941 if (!ArrayType::isValidElementType(EltTy))
1942 return Error(TypeLoc, "invalid array element type");
1943 Result = ArrayType::get(EltTy, Size);
1948 //===----------------------------------------------------------------------===//
1949 // Function Semantic Analysis.
1950 //===----------------------------------------------------------------------===//
1952 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1954 : P(p), F(f), FunctionNumber(functionNumber) {
1956 // Insert unnamed arguments into the NumberedVals list.
1957 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1960 NumberedVals.push_back(AI);
1963 LLParser::PerFunctionState::~PerFunctionState() {
1964 // If there were any forward referenced non-basicblock values, delete them.
1965 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1966 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1967 if (!isa<BasicBlock>(I->second.first)) {
1968 I->second.first->replaceAllUsesWith(
1969 UndefValue::get(I->second.first->getType()));
1970 delete I->second.first;
1971 I->second.first = 0;
1974 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1975 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1976 if (!isa<BasicBlock>(I->second.first)) {
1977 I->second.first->replaceAllUsesWith(
1978 UndefValue::get(I->second.first->getType()));
1979 delete I->second.first;
1980 I->second.first = 0;
1984 bool LLParser::PerFunctionState::FinishFunction() {
1985 // Check to see if someone took the address of labels in this block.
1986 if (!P.ForwardRefBlockAddresses.empty()) {
1988 if (!F.getName().empty()) {
1989 FunctionID.Kind = ValID::t_GlobalName;
1990 FunctionID.StrVal = F.getName();
1992 FunctionID.Kind = ValID::t_GlobalID;
1993 FunctionID.UIntVal = FunctionNumber;
1996 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1997 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1998 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1999 // Resolve all these references.
2000 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
2003 P.ForwardRefBlockAddresses.erase(FRBAI);
2007 if (!ForwardRefVals.empty())
2008 return P.Error(ForwardRefVals.begin()->second.second,
2009 "use of undefined value '%" + ForwardRefVals.begin()->first +
2011 if (!ForwardRefValIDs.empty())
2012 return P.Error(ForwardRefValIDs.begin()->second.second,
2013 "use of undefined value '%" +
2014 Twine(ForwardRefValIDs.begin()->first) + "'");
2019 /// GetVal - Get a value with the specified name or ID, creating a
2020 /// forward reference record if needed. This can return null if the value
2021 /// exists but does not have the right type.
2022 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2023 Type *Ty, LocTy Loc) {
2024 // Look this name up in the normal function symbol table.
2025 Value *Val = F.getValueSymbolTable().lookup(Name);
2027 // If this is a forward reference for the value, see if we already created a
2028 // forward ref record.
2030 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2031 I = ForwardRefVals.find(Name);
2032 if (I != ForwardRefVals.end())
2033 Val = I->second.first;
2036 // If we have the value in the symbol table or fwd-ref table, return it.
2038 if (Val->getType() == Ty) return Val;
2039 if (Ty->isLabelTy())
2040 P.Error(Loc, "'%" + Name + "' is not a basic block");
2042 P.Error(Loc, "'%" + Name + "' defined with type '" +
2043 getTypeString(Val->getType()) + "'");
2047 // Don't make placeholders with invalid type.
2048 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2049 P.Error(Loc, "invalid use of a non-first-class type");
2053 // Otherwise, create a new forward reference for this value and remember it.
2055 if (Ty->isLabelTy())
2056 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2058 FwdVal = new Argument(Ty, Name);
2060 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2064 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2066 // Look this name up in the normal function symbol table.
2067 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
2069 // If this is a forward reference for the value, see if we already created a
2070 // forward ref record.
2072 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2073 I = ForwardRefValIDs.find(ID);
2074 if (I != ForwardRefValIDs.end())
2075 Val = I->second.first;
2078 // If we have the value in the symbol table or fwd-ref table, return it.
2080 if (Val->getType() == Ty) return Val;
2081 if (Ty->isLabelTy())
2082 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2084 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2085 getTypeString(Val->getType()) + "'");
2089 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2090 P.Error(Loc, "invalid use of a non-first-class type");
2094 // Otherwise, create a new forward reference for this value and remember it.
2096 if (Ty->isLabelTy())
2097 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2099 FwdVal = new Argument(Ty);
2101 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2105 /// SetInstName - After an instruction is parsed and inserted into its
2106 /// basic block, this installs its name.
2107 bool LLParser::PerFunctionState::SetInstName(int NameID,
2108 const std::string &NameStr,
2109 LocTy NameLoc, Instruction *Inst) {
2110 // If this instruction has void type, it cannot have a name or ID specified.
2111 if (Inst->getType()->isVoidTy()) {
2112 if (NameID != -1 || !NameStr.empty())
2113 return P.Error(NameLoc, "instructions returning void cannot have a name");
2117 // If this was a numbered instruction, verify that the instruction is the
2118 // expected value and resolve any forward references.
2119 if (NameStr.empty()) {
2120 // If neither a name nor an ID was specified, just use the next ID.
2122 NameID = NumberedVals.size();
2124 if (unsigned(NameID) != NumberedVals.size())
2125 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2126 Twine(NumberedVals.size()) + "'");
2128 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2129 ForwardRefValIDs.find(NameID);
2130 if (FI != ForwardRefValIDs.end()) {
2131 if (FI->second.first->getType() != Inst->getType())
2132 return P.Error(NameLoc, "instruction forward referenced with type '" +
2133 getTypeString(FI->second.first->getType()) + "'");
2134 FI->second.first->replaceAllUsesWith(Inst);
2135 delete FI->second.first;
2136 ForwardRefValIDs.erase(FI);
2139 NumberedVals.push_back(Inst);
2143 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2144 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2145 FI = ForwardRefVals.find(NameStr);
2146 if (FI != ForwardRefVals.end()) {
2147 if (FI->second.first->getType() != Inst->getType())
2148 return P.Error(NameLoc, "instruction forward referenced with type '" +
2149 getTypeString(FI->second.first->getType()) + "'");
2150 FI->second.first->replaceAllUsesWith(Inst);
2151 delete FI->second.first;
2152 ForwardRefVals.erase(FI);
2155 // Set the name on the instruction.
2156 Inst->setName(NameStr);
2158 if (Inst->getName() != NameStr)
2159 return P.Error(NameLoc, "multiple definition of local value named '" +
2164 /// GetBB - Get a basic block with the specified name or ID, creating a
2165 /// forward reference record if needed.
2166 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2168 return cast_or_null<BasicBlock>(GetVal(Name,
2169 Type::getLabelTy(F.getContext()), Loc));
2172 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2173 return cast_or_null<BasicBlock>(GetVal(ID,
2174 Type::getLabelTy(F.getContext()), Loc));
2177 /// DefineBB - Define the specified basic block, which is either named or
2178 /// unnamed. If there is an error, this returns null otherwise it returns
2179 /// the block being defined.
2180 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2184 BB = GetBB(NumberedVals.size(), Loc);
2186 BB = GetBB(Name, Loc);
2187 if (BB == 0) return 0; // Already diagnosed error.
2189 // Move the block to the end of the function. Forward ref'd blocks are
2190 // inserted wherever they happen to be referenced.
2191 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2193 // Remove the block from forward ref sets.
2195 ForwardRefValIDs.erase(NumberedVals.size());
2196 NumberedVals.push_back(BB);
2198 // BB forward references are already in the function symbol table.
2199 ForwardRefVals.erase(Name);
2205 //===----------------------------------------------------------------------===//
2207 //===----------------------------------------------------------------------===//
2209 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2210 /// type implied. For example, if we parse "4" we don't know what integer type
2211 /// it has. The value will later be combined with its type and checked for
2212 /// sanity. PFS is used to convert function-local operands of metadata (since
2213 /// metadata operands are not just parsed here but also converted to values).
2214 /// PFS can be null when we are not parsing metadata values inside a function.
2215 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2216 ID.Loc = Lex.getLoc();
2217 switch (Lex.getKind()) {
2218 default: return TokError("expected value token");
2219 case lltok::GlobalID: // @42
2220 ID.UIntVal = Lex.getUIntVal();
2221 ID.Kind = ValID::t_GlobalID;
2223 case lltok::GlobalVar: // @foo
2224 ID.StrVal = Lex.getStrVal();
2225 ID.Kind = ValID::t_GlobalName;
2227 case lltok::LocalVarID: // %42
2228 ID.UIntVal = Lex.getUIntVal();
2229 ID.Kind = ValID::t_LocalID;
2231 case lltok::LocalVar: // %foo
2232 ID.StrVal = Lex.getStrVal();
2233 ID.Kind = ValID::t_LocalName;
2235 case lltok::exclaim: // !42, !{...}, or !"foo"
2236 return ParseMetadataValue(ID, PFS);
2238 ID.APSIntVal = Lex.getAPSIntVal();
2239 ID.Kind = ValID::t_APSInt;
2241 case lltok::APFloat:
2242 ID.APFloatVal = Lex.getAPFloatVal();
2243 ID.Kind = ValID::t_APFloat;
2245 case lltok::kw_true:
2246 ID.ConstantVal = ConstantInt::getTrue(Context);
2247 ID.Kind = ValID::t_Constant;
2249 case lltok::kw_false:
2250 ID.ConstantVal = ConstantInt::getFalse(Context);
2251 ID.Kind = ValID::t_Constant;
2253 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2254 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2255 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2257 case lltok::lbrace: {
2258 // ValID ::= '{' ConstVector '}'
2260 SmallVector<Constant*, 16> Elts;
2261 if (ParseGlobalValueVector(Elts) ||
2262 ParseToken(lltok::rbrace, "expected end of struct constant"))
2265 ID.ConstantStructElts = new Constant*[Elts.size()];
2266 ID.UIntVal = Elts.size();
2267 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2268 ID.Kind = ValID::t_ConstantStruct;
2272 // ValID ::= '<' ConstVector '>' --> Vector.
2273 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2275 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2277 SmallVector<Constant*, 16> Elts;
2278 LocTy FirstEltLoc = Lex.getLoc();
2279 if (ParseGlobalValueVector(Elts) ||
2281 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2282 ParseToken(lltok::greater, "expected end of constant"))
2285 if (isPackedStruct) {
2286 ID.ConstantStructElts = new Constant*[Elts.size()];
2287 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2288 ID.UIntVal = Elts.size();
2289 ID.Kind = ValID::t_PackedConstantStruct;
2294 return Error(ID.Loc, "constant vector must not be empty");
2296 if (!Elts[0]->getType()->isIntegerTy() &&
2297 !Elts[0]->getType()->isFloatingPointTy() &&
2298 !Elts[0]->getType()->isPointerTy())
2299 return Error(FirstEltLoc,
2300 "vector elements must have integer, pointer or floating point type");
2302 // Verify that all the vector elements have the same type.
2303 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2304 if (Elts[i]->getType() != Elts[0]->getType())
2305 return Error(FirstEltLoc,
2306 "vector element #" + Twine(i) +
2307 " is not of type '" + getTypeString(Elts[0]->getType()));
2309 ID.ConstantVal = ConstantVector::get(Elts);
2310 ID.Kind = ValID::t_Constant;
2313 case lltok::lsquare: { // Array Constant
2315 SmallVector<Constant*, 16> Elts;
2316 LocTy FirstEltLoc = Lex.getLoc();
2317 if (ParseGlobalValueVector(Elts) ||
2318 ParseToken(lltok::rsquare, "expected end of array constant"))
2321 // Handle empty element.
2323 // Use undef instead of an array because it's inconvenient to determine
2324 // the element type at this point, there being no elements to examine.
2325 ID.Kind = ValID::t_EmptyArray;
2329 if (!Elts[0]->getType()->isFirstClassType())
2330 return Error(FirstEltLoc, "invalid array element type: " +
2331 getTypeString(Elts[0]->getType()));
2333 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2335 // Verify all elements are correct type!
2336 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2337 if (Elts[i]->getType() != Elts[0]->getType())
2338 return Error(FirstEltLoc,
2339 "array element #" + Twine(i) +
2340 " is not of type '" + getTypeString(Elts[0]->getType()));
2343 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2344 ID.Kind = ValID::t_Constant;
2347 case lltok::kw_c: // c "foo"
2349 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2351 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2352 ID.Kind = ValID::t_Constant;
2355 case lltok::kw_asm: {
2356 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2358 bool HasSideEffect, AlignStack, AsmDialect;
2360 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2361 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2362 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2363 ParseStringConstant(ID.StrVal) ||
2364 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2365 ParseToken(lltok::StringConstant, "expected constraint string"))
2367 ID.StrVal2 = Lex.getStrVal();
2368 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2369 (unsigned(AsmDialect)<<2);
2370 ID.Kind = ValID::t_InlineAsm;
2374 case lltok::kw_blockaddress: {
2375 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2379 LocTy FnLoc, LabelLoc;
2381 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2383 ParseToken(lltok::comma, "expected comma in block address expression")||
2384 ParseValID(Label) ||
2385 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2388 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2389 return Error(Fn.Loc, "expected function name in blockaddress");
2390 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2391 return Error(Label.Loc, "expected basic block name in blockaddress");
2393 // Make a global variable as a placeholder for this reference.
2394 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2395 false, GlobalValue::InternalLinkage,
2397 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2398 ID.ConstantVal = FwdRef;
2399 ID.Kind = ValID::t_Constant;
2403 case lltok::kw_trunc:
2404 case lltok::kw_zext:
2405 case lltok::kw_sext:
2406 case lltok::kw_fptrunc:
2407 case lltok::kw_fpext:
2408 case lltok::kw_bitcast:
2409 case lltok::kw_uitofp:
2410 case lltok::kw_sitofp:
2411 case lltok::kw_fptoui:
2412 case lltok::kw_fptosi:
2413 case lltok::kw_inttoptr:
2414 case lltok::kw_ptrtoint: {
2415 unsigned Opc = Lex.getUIntVal();
2419 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2420 ParseGlobalTypeAndValue(SrcVal) ||
2421 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2422 ParseType(DestTy) ||
2423 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2425 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2426 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2427 getTypeString(SrcVal->getType()) + "' to '" +
2428 getTypeString(DestTy) + "'");
2429 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2431 ID.Kind = ValID::t_Constant;
2434 case lltok::kw_extractvalue: {
2437 SmallVector<unsigned, 4> Indices;
2438 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2439 ParseGlobalTypeAndValue(Val) ||
2440 ParseIndexList(Indices) ||
2441 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2444 if (!Val->getType()->isAggregateType())
2445 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2446 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2447 return Error(ID.Loc, "invalid indices for extractvalue");
2448 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2449 ID.Kind = ValID::t_Constant;
2452 case lltok::kw_insertvalue: {
2454 Constant *Val0, *Val1;
2455 SmallVector<unsigned, 4> Indices;
2456 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2457 ParseGlobalTypeAndValue(Val0) ||
2458 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2459 ParseGlobalTypeAndValue(Val1) ||
2460 ParseIndexList(Indices) ||
2461 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2463 if (!Val0->getType()->isAggregateType())
2464 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2465 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2466 return Error(ID.Loc, "invalid indices for insertvalue");
2467 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2468 ID.Kind = ValID::t_Constant;
2471 case lltok::kw_icmp:
2472 case lltok::kw_fcmp: {
2473 unsigned PredVal, Opc = Lex.getUIntVal();
2474 Constant *Val0, *Val1;
2476 if (ParseCmpPredicate(PredVal, Opc) ||
2477 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2478 ParseGlobalTypeAndValue(Val0) ||
2479 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2480 ParseGlobalTypeAndValue(Val1) ||
2481 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2484 if (Val0->getType() != Val1->getType())
2485 return Error(ID.Loc, "compare operands must have the same type");
2487 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2489 if (Opc == Instruction::FCmp) {
2490 if (!Val0->getType()->isFPOrFPVectorTy())
2491 return Error(ID.Loc, "fcmp requires floating point operands");
2492 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2494 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2495 if (!Val0->getType()->isIntOrIntVectorTy() &&
2496 !Val0->getType()->getScalarType()->isPointerTy())
2497 return Error(ID.Loc, "icmp requires pointer or integer operands");
2498 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2500 ID.Kind = ValID::t_Constant;
2504 // Binary Operators.
2506 case lltok::kw_fadd:
2508 case lltok::kw_fsub:
2510 case lltok::kw_fmul:
2511 case lltok::kw_udiv:
2512 case lltok::kw_sdiv:
2513 case lltok::kw_fdiv:
2514 case lltok::kw_urem:
2515 case lltok::kw_srem:
2516 case lltok::kw_frem:
2518 case lltok::kw_lshr:
2519 case lltok::kw_ashr: {
2523 unsigned Opc = Lex.getUIntVal();
2524 Constant *Val0, *Val1;
2526 LocTy ModifierLoc = Lex.getLoc();
2527 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2528 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2529 if (EatIfPresent(lltok::kw_nuw))
2531 if (EatIfPresent(lltok::kw_nsw)) {
2533 if (EatIfPresent(lltok::kw_nuw))
2536 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2537 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2538 if (EatIfPresent(lltok::kw_exact))
2541 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2542 ParseGlobalTypeAndValue(Val0) ||
2543 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2544 ParseGlobalTypeAndValue(Val1) ||
2545 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2547 if (Val0->getType() != Val1->getType())
2548 return Error(ID.Loc, "operands of constexpr must have same type");
2549 if (!Val0->getType()->isIntOrIntVectorTy()) {
2551 return Error(ModifierLoc, "nuw only applies to integer operations");
2553 return Error(ModifierLoc, "nsw only applies to integer operations");
2555 // Check that the type is valid for the operator.
2557 case Instruction::Add:
2558 case Instruction::Sub:
2559 case Instruction::Mul:
2560 case Instruction::UDiv:
2561 case Instruction::SDiv:
2562 case Instruction::URem:
2563 case Instruction::SRem:
2564 case Instruction::Shl:
2565 case Instruction::AShr:
2566 case Instruction::LShr:
2567 if (!Val0->getType()->isIntOrIntVectorTy())
2568 return Error(ID.Loc, "constexpr requires integer operands");
2570 case Instruction::FAdd:
2571 case Instruction::FSub:
2572 case Instruction::FMul:
2573 case Instruction::FDiv:
2574 case Instruction::FRem:
2575 if (!Val0->getType()->isFPOrFPVectorTy())
2576 return Error(ID.Loc, "constexpr requires fp operands");
2578 default: llvm_unreachable("Unknown binary operator!");
2581 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2582 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2583 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2584 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2586 ID.Kind = ValID::t_Constant;
2590 // Logical Operations
2593 case lltok::kw_xor: {
2594 unsigned Opc = Lex.getUIntVal();
2595 Constant *Val0, *Val1;
2597 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2598 ParseGlobalTypeAndValue(Val0) ||
2599 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2600 ParseGlobalTypeAndValue(Val1) ||
2601 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2603 if (Val0->getType() != Val1->getType())
2604 return Error(ID.Loc, "operands of constexpr must have same type");
2605 if (!Val0->getType()->isIntOrIntVectorTy())
2606 return Error(ID.Loc,
2607 "constexpr requires integer or integer vector operands");
2608 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2609 ID.Kind = ValID::t_Constant;
2613 case lltok::kw_getelementptr:
2614 case lltok::kw_shufflevector:
2615 case lltok::kw_insertelement:
2616 case lltok::kw_extractelement:
2617 case lltok::kw_select: {
2618 unsigned Opc = Lex.getUIntVal();
2619 SmallVector<Constant*, 16> Elts;
2620 bool InBounds = false;
2622 if (Opc == Instruction::GetElementPtr)
2623 InBounds = EatIfPresent(lltok::kw_inbounds);
2624 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2625 ParseGlobalValueVector(Elts) ||
2626 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2629 if (Opc == Instruction::GetElementPtr) {
2630 if (Elts.size() == 0 ||
2631 !Elts[0]->getType()->getScalarType()->isPointerTy())
2632 return Error(ID.Loc, "getelementptr requires pointer operand");
2634 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2635 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2636 return Error(ID.Loc, "invalid indices for getelementptr");
2637 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2639 } else if (Opc == Instruction::Select) {
2640 if (Elts.size() != 3)
2641 return Error(ID.Loc, "expected three operands to select");
2642 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2644 return Error(ID.Loc, Reason);
2645 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2646 } else if (Opc == Instruction::ShuffleVector) {
2647 if (Elts.size() != 3)
2648 return Error(ID.Loc, "expected three operands to shufflevector");
2649 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2650 return Error(ID.Loc, "invalid operands to shufflevector");
2652 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2653 } else if (Opc == Instruction::ExtractElement) {
2654 if (Elts.size() != 2)
2655 return Error(ID.Loc, "expected two operands to extractelement");
2656 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2657 return Error(ID.Loc, "invalid extractelement operands");
2658 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2660 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2661 if (Elts.size() != 3)
2662 return Error(ID.Loc, "expected three operands to insertelement");
2663 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2664 return Error(ID.Loc, "invalid insertelement operands");
2666 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2669 ID.Kind = ValID::t_Constant;
2678 /// ParseGlobalValue - Parse a global value with the specified type.
2679 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2683 bool Parsed = ParseValID(ID) ||
2684 ConvertValIDToValue(Ty, ID, V, NULL);
2685 if (V && !(C = dyn_cast<Constant>(V)))
2686 return Error(ID.Loc, "global values must be constants");
2690 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2692 return ParseType(Ty) ||
2693 ParseGlobalValue(Ty, V);
2696 /// ParseGlobalValueVector
2698 /// ::= TypeAndValue (',' TypeAndValue)*
2699 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2701 if (Lex.getKind() == lltok::rbrace ||
2702 Lex.getKind() == lltok::rsquare ||
2703 Lex.getKind() == lltok::greater ||
2704 Lex.getKind() == lltok::rparen)
2708 if (ParseGlobalTypeAndValue(C)) return true;
2711 while (EatIfPresent(lltok::comma)) {
2712 if (ParseGlobalTypeAndValue(C)) return true;
2719 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2720 assert(Lex.getKind() == lltok::lbrace);
2723 SmallVector<Value*, 16> Elts;
2724 if (ParseMDNodeVector(Elts, PFS) ||
2725 ParseToken(lltok::rbrace, "expected end of metadata node"))
2728 ID.MDNodeVal = MDNode::get(Context, Elts);
2729 ID.Kind = ValID::t_MDNode;
2733 /// ParseMetadataValue
2737 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2738 assert(Lex.getKind() == lltok::exclaim);
2743 if (Lex.getKind() == lltok::lbrace)
2744 return ParseMetadataListValue(ID, PFS);
2746 // Standalone metadata reference
2748 if (Lex.getKind() == lltok::APSInt) {
2749 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2750 ID.Kind = ValID::t_MDNode;
2755 // ::= '!' STRINGCONSTANT
2756 if (ParseMDString(ID.MDStringVal)) return true;
2757 ID.Kind = ValID::t_MDString;
2762 //===----------------------------------------------------------------------===//
2763 // Function Parsing.
2764 //===----------------------------------------------------------------------===//
2766 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2767 PerFunctionState *PFS) {
2768 if (Ty->isFunctionTy())
2769 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2772 case ValID::t_LocalID:
2773 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2774 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2776 case ValID::t_LocalName:
2777 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2778 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2780 case ValID::t_InlineAsm: {
2781 PointerType *PTy = dyn_cast<PointerType>(Ty);
2783 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2784 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2785 return Error(ID.Loc, "invalid type for inline asm constraint string");
2786 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
2787 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
2790 case ValID::t_MDNode:
2791 if (!Ty->isMetadataTy())
2792 return Error(ID.Loc, "metadata value must have metadata type");
2795 case ValID::t_MDString:
2796 if (!Ty->isMetadataTy())
2797 return Error(ID.Loc, "metadata value must have metadata type");
2800 case ValID::t_GlobalName:
2801 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2803 case ValID::t_GlobalID:
2804 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2806 case ValID::t_APSInt:
2807 if (!Ty->isIntegerTy())
2808 return Error(ID.Loc, "integer constant must have integer type");
2809 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2810 V = ConstantInt::get(Context, ID.APSIntVal);
2812 case ValID::t_APFloat:
2813 if (!Ty->isFloatingPointTy() ||
2814 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2815 return Error(ID.Loc, "floating point constant invalid for type");
2817 // The lexer has no type info, so builds all half, float, and double FP
2818 // constants as double. Fix this here. Long double does not need this.
2819 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
2822 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
2824 else if (Ty->isFloatTy())
2825 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2828 V = ConstantFP::get(Context, ID.APFloatVal);
2830 if (V->getType() != Ty)
2831 return Error(ID.Loc, "floating point constant does not have type '" +
2832 getTypeString(Ty) + "'");
2836 if (!Ty->isPointerTy())
2837 return Error(ID.Loc, "null must be a pointer type");
2838 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2840 case ValID::t_Undef:
2841 // FIXME: LabelTy should not be a first-class type.
2842 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2843 return Error(ID.Loc, "invalid type for undef constant");
2844 V = UndefValue::get(Ty);
2846 case ValID::t_EmptyArray:
2847 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2848 return Error(ID.Loc, "invalid empty array initializer");
2849 V = UndefValue::get(Ty);
2852 // FIXME: LabelTy should not be a first-class type.
2853 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2854 return Error(ID.Loc, "invalid type for null constant");
2855 V = Constant::getNullValue(Ty);
2857 case ValID::t_Constant:
2858 if (ID.ConstantVal->getType() != Ty)
2859 return Error(ID.Loc, "constant expression type mismatch");
2863 case ValID::t_ConstantStruct:
2864 case ValID::t_PackedConstantStruct:
2865 if (StructType *ST = dyn_cast<StructType>(Ty)) {
2866 if (ST->getNumElements() != ID.UIntVal)
2867 return Error(ID.Loc,
2868 "initializer with struct type has wrong # elements");
2869 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
2870 return Error(ID.Loc, "packed'ness of initializer and type don't match");
2872 // Verify that the elements are compatible with the structtype.
2873 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
2874 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
2875 return Error(ID.Loc, "element " + Twine(i) +
2876 " of struct initializer doesn't match struct element type");
2878 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
2881 return Error(ID.Loc, "constant expression type mismatch");
2884 llvm_unreachable("Invalid ValID");
2887 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
2890 return ParseValID(ID, PFS) ||
2891 ConvertValIDToValue(Ty, ID, V, PFS);
2894 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
2896 return ParseType(Ty) ||
2897 ParseValue(Ty, V, PFS);
2900 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2901 PerFunctionState &PFS) {
2904 if (ParseTypeAndValue(V, PFS)) return true;
2905 if (!isa<BasicBlock>(V))
2906 return Error(Loc, "expected a basic block");
2907 BB = cast<BasicBlock>(V);
2913 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2914 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2915 /// OptionalAlign OptGC
2916 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2917 // Parse the linkage.
2918 LocTy LinkageLoc = Lex.getLoc();
2921 unsigned Visibility;
2922 AttrBuilder RetAttrs;
2925 LocTy RetTypeLoc = Lex.getLoc();
2926 if (ParseOptionalLinkage(Linkage) ||
2927 ParseOptionalVisibility(Visibility) ||
2928 ParseOptionalCallingConv(CC) ||
2929 ParseOptionalReturnAttrs(RetAttrs) ||
2930 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2933 // Verify that the linkage is ok.
2934 switch ((GlobalValue::LinkageTypes)Linkage) {
2935 case GlobalValue::ExternalLinkage:
2936 break; // always ok.
2937 case GlobalValue::DLLImportLinkage:
2938 case GlobalValue::ExternalWeakLinkage:
2940 return Error(LinkageLoc, "invalid linkage for function definition");
2942 case GlobalValue::PrivateLinkage:
2943 case GlobalValue::LinkerPrivateLinkage:
2944 case GlobalValue::LinkerPrivateWeakLinkage:
2945 case GlobalValue::InternalLinkage:
2946 case GlobalValue::AvailableExternallyLinkage:
2947 case GlobalValue::LinkOnceAnyLinkage:
2948 case GlobalValue::LinkOnceODRLinkage:
2949 case GlobalValue::LinkOnceODRAutoHideLinkage:
2950 case GlobalValue::WeakAnyLinkage:
2951 case GlobalValue::WeakODRLinkage:
2952 case GlobalValue::DLLExportLinkage:
2954 return Error(LinkageLoc, "invalid linkage for function declaration");
2956 case GlobalValue::AppendingLinkage:
2957 case GlobalValue::CommonLinkage:
2958 return Error(LinkageLoc, "invalid function linkage type");
2961 if (!FunctionType::isValidReturnType(RetType))
2962 return Error(RetTypeLoc, "invalid function return type");
2964 LocTy NameLoc = Lex.getLoc();
2966 std::string FunctionName;
2967 if (Lex.getKind() == lltok::GlobalVar) {
2968 FunctionName = Lex.getStrVal();
2969 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2970 unsigned NameID = Lex.getUIntVal();
2972 if (NameID != NumberedVals.size())
2973 return TokError("function expected to be numbered '%" +
2974 Twine(NumberedVals.size()) + "'");
2976 return TokError("expected function name");
2981 if (Lex.getKind() != lltok::lparen)
2982 return TokError("expected '(' in function argument list");
2984 SmallVector<ArgInfo, 8> ArgList;
2986 AttrBuilder FuncAttrs;
2987 std::vector<unsigned> FwdRefAttrGrps;
2989 std::string Section;
2993 LocTy UnnamedAddrLoc;
2995 if (ParseArgumentList(ArgList, isVarArg) ||
2996 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
2998 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
3000 (EatIfPresent(lltok::kw_section) &&
3001 ParseStringConstant(Section)) ||
3002 ParseOptionalAlignment(Alignment) ||
3003 (EatIfPresent(lltok::kw_gc) &&
3004 ParseStringConstant(GC)))
3007 if (FuncAttrs.contains(Attribute::NoBuiltin))
3008 return Error(NoBuiltinLoc, "'nobuiltin' attribute not valid on function");
3010 // If the alignment was parsed as an attribute, move to the alignment field.
3011 if (FuncAttrs.hasAlignmentAttr()) {
3012 Alignment = FuncAttrs.getAlignment();
3013 FuncAttrs.removeAttribute(Attribute::Alignment);
3016 // Okay, if we got here, the function is syntactically valid. Convert types
3017 // and do semantic checks.
3018 std::vector<Type*> ParamTypeList;
3019 SmallVector<AttributeSet, 8> Attrs;
3021 if (RetAttrs.hasAttributes())
3022 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3023 AttributeSet::ReturnIndex,
3026 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3027 ParamTypeList.push_back(ArgList[i].Ty);
3028 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3029 AttrBuilder B(ArgList[i].Attrs, i + 1);
3030 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3034 if (FuncAttrs.hasAttributes())
3035 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3036 AttributeSet::FunctionIndex,
3039 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3041 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
3042 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
3045 FunctionType::get(RetType, ParamTypeList, isVarArg);
3046 PointerType *PFT = PointerType::getUnqual(FT);
3049 if (!FunctionName.empty()) {
3050 // If this was a definition of a forward reference, remove the definition
3051 // from the forward reference table and fill in the forward ref.
3052 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
3053 ForwardRefVals.find(FunctionName);
3054 if (FRVI != ForwardRefVals.end()) {
3055 Fn = M->getFunction(FunctionName);
3057 return Error(FRVI->second.second, "invalid forward reference to "
3058 "function as global value!");
3059 if (Fn->getType() != PFT)
3060 return Error(FRVI->second.second, "invalid forward reference to "
3061 "function '" + FunctionName + "' with wrong type!");
3063 ForwardRefVals.erase(FRVI);
3064 } else if ((Fn = M->getFunction(FunctionName))) {
3065 // Reject redefinitions.
3066 return Error(NameLoc, "invalid redefinition of function '" +
3067 FunctionName + "'");
3068 } else if (M->getNamedValue(FunctionName)) {
3069 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
3073 // If this is a definition of a forward referenced function, make sure the
3075 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
3076 = ForwardRefValIDs.find(NumberedVals.size());
3077 if (I != ForwardRefValIDs.end()) {
3078 Fn = cast<Function>(I->second.first);
3079 if (Fn->getType() != PFT)
3080 return Error(NameLoc, "type of definition and forward reference of '@" +
3081 Twine(NumberedVals.size()) + "' disagree");
3082 ForwardRefValIDs.erase(I);
3087 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
3088 else // Move the forward-reference to the correct spot in the module.
3089 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
3091 if (FunctionName.empty())
3092 NumberedVals.push_back(Fn);
3094 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
3095 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
3096 Fn->setCallingConv(CC);
3097 Fn->setAttributes(PAL);
3098 Fn->setUnnamedAddr(UnnamedAddr);
3099 Fn->setAlignment(Alignment);
3100 Fn->setSection(Section);
3101 if (!GC.empty()) Fn->setGC(GC.c_str());
3102 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
3104 // Add all of the arguments we parsed to the function.
3105 Function::arg_iterator ArgIt = Fn->arg_begin();
3106 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
3107 // If the argument has a name, insert it into the argument symbol table.
3108 if (ArgList[i].Name.empty()) continue;
3110 // Set the name, if it conflicted, it will be auto-renamed.
3111 ArgIt->setName(ArgList[i].Name);
3113 if (ArgIt->getName() != ArgList[i].Name)
3114 return Error(ArgList[i].Loc, "redefinition of argument '%" +
3115 ArgList[i].Name + "'");
3122 /// ParseFunctionBody
3123 /// ::= '{' BasicBlock+ '}'
3125 bool LLParser::ParseFunctionBody(Function &Fn) {
3126 if (Lex.getKind() != lltok::lbrace)
3127 return TokError("expected '{' in function body");
3128 Lex.Lex(); // eat the {.
3130 int FunctionNumber = -1;
3131 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
3133 PerFunctionState PFS(*this, Fn, FunctionNumber);
3135 // We need at least one basic block.
3136 if (Lex.getKind() == lltok::rbrace)
3137 return TokError("function body requires at least one basic block");
3139 while (Lex.getKind() != lltok::rbrace)
3140 if (ParseBasicBlock(PFS)) return true;
3145 // Verify function is ok.
3146 return PFS.FinishFunction();
3150 /// ::= LabelStr? Instruction*
3151 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
3152 // If this basic block starts out with a name, remember it.
3154 LocTy NameLoc = Lex.getLoc();
3155 if (Lex.getKind() == lltok::LabelStr) {
3156 Name = Lex.getStrVal();
3160 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
3161 if (BB == 0) return true;
3163 std::string NameStr;
3165 // Parse the instructions in this block until we get a terminator.
3167 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
3169 // This instruction may have three possibilities for a name: a) none
3170 // specified, b) name specified "%foo =", c) number specified: "%4 =".
3171 LocTy NameLoc = Lex.getLoc();
3175 if (Lex.getKind() == lltok::LocalVarID) {
3176 NameID = Lex.getUIntVal();
3178 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
3180 } else if (Lex.getKind() == lltok::LocalVar) {
3181 NameStr = Lex.getStrVal();
3183 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
3187 switch (ParseInstruction(Inst, BB, PFS)) {
3188 default: llvm_unreachable("Unknown ParseInstruction result!");
3189 case InstError: return true;
3191 BB->getInstList().push_back(Inst);
3193 // With a normal result, we check to see if the instruction is followed by
3194 // a comma and metadata.
3195 if (EatIfPresent(lltok::comma))
3196 if (ParseInstructionMetadata(Inst, &PFS))
3199 case InstExtraComma:
3200 BB->getInstList().push_back(Inst);
3202 // If the instruction parser ate an extra comma at the end of it, it
3203 // *must* be followed by metadata.
3204 if (ParseInstructionMetadata(Inst, &PFS))
3209 // Set the name on the instruction.
3210 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3211 } while (!isa<TerminatorInst>(Inst));
3216 //===----------------------------------------------------------------------===//
3217 // Instruction Parsing.
3218 //===----------------------------------------------------------------------===//
3220 /// ParseInstruction - Parse one of the many different instructions.
3222 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3223 PerFunctionState &PFS) {
3224 lltok::Kind Token = Lex.getKind();
3225 if (Token == lltok::Eof)
3226 return TokError("found end of file when expecting more instructions");
3227 LocTy Loc = Lex.getLoc();
3228 unsigned KeywordVal = Lex.getUIntVal();
3229 Lex.Lex(); // Eat the keyword.
3232 default: return Error(Loc, "expected instruction opcode");
3233 // Terminator Instructions.
3234 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3235 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3236 case lltok::kw_br: return ParseBr(Inst, PFS);
3237 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3238 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3239 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3240 case lltok::kw_resume: return ParseResume(Inst, PFS);
3241 // Binary Operators.
3245 case lltok::kw_shl: {
3246 bool NUW = EatIfPresent(lltok::kw_nuw);
3247 bool NSW = EatIfPresent(lltok::kw_nsw);
3248 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3250 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3252 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3253 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3256 case lltok::kw_fadd:
3257 case lltok::kw_fsub:
3258 case lltok::kw_fmul:
3259 case lltok::kw_fdiv:
3260 case lltok::kw_frem: {
3261 FastMathFlags FMF = EatFastMathFlagsIfPresent();
3262 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
3266 Inst->setFastMathFlags(FMF);
3270 case lltok::kw_sdiv:
3271 case lltok::kw_udiv:
3272 case lltok::kw_lshr:
3273 case lltok::kw_ashr: {
3274 bool Exact = EatIfPresent(lltok::kw_exact);
3276 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3277 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3281 case lltok::kw_urem:
3282 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3285 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3286 case lltok::kw_icmp:
3287 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3289 case lltok::kw_trunc:
3290 case lltok::kw_zext:
3291 case lltok::kw_sext:
3292 case lltok::kw_fptrunc:
3293 case lltok::kw_fpext:
3294 case lltok::kw_bitcast:
3295 case lltok::kw_uitofp:
3296 case lltok::kw_sitofp:
3297 case lltok::kw_fptoui:
3298 case lltok::kw_fptosi:
3299 case lltok::kw_inttoptr:
3300 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3302 case lltok::kw_select: return ParseSelect(Inst, PFS);
3303 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3304 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3305 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3306 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3307 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3308 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3309 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3310 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3312 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3313 case lltok::kw_load: return ParseLoad(Inst, PFS);
3314 case lltok::kw_store: return ParseStore(Inst, PFS);
3315 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3316 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3317 case lltok::kw_fence: return ParseFence(Inst, PFS);
3318 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3319 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3320 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3324 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3325 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3326 if (Opc == Instruction::FCmp) {
3327 switch (Lex.getKind()) {
3328 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
3329 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3330 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3331 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3332 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3333 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3334 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3335 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3336 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3337 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3338 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3339 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3340 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3341 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3342 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3343 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3344 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3347 switch (Lex.getKind()) {
3348 default: return TokError("expected icmp predicate (e.g. 'eq')");
3349 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3350 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3351 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3352 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3353 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3354 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3355 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3356 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3357 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3358 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3365 //===----------------------------------------------------------------------===//
3366 // Terminator Instructions.
3367 //===----------------------------------------------------------------------===//
3369 /// ParseRet - Parse a return instruction.
3370 /// ::= 'ret' void (',' !dbg, !1)*
3371 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3372 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3373 PerFunctionState &PFS) {
3374 SMLoc TypeLoc = Lex.getLoc();
3376 if (ParseType(Ty, true /*void allowed*/)) return true;
3378 Type *ResType = PFS.getFunction().getReturnType();
3380 if (Ty->isVoidTy()) {
3381 if (!ResType->isVoidTy())
3382 return Error(TypeLoc, "value doesn't match function result type '" +
3383 getTypeString(ResType) + "'");
3385 Inst = ReturnInst::Create(Context);
3390 if (ParseValue(Ty, RV, PFS)) return true;
3392 if (ResType != RV->getType())
3393 return Error(TypeLoc, "value doesn't match function result type '" +
3394 getTypeString(ResType) + "'");
3396 Inst = ReturnInst::Create(Context, RV);
3402 /// ::= 'br' TypeAndValue
3403 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3404 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3407 BasicBlock *Op1, *Op2;
3408 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3410 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3411 Inst = BranchInst::Create(BB);
3415 if (Op0->getType() != Type::getInt1Ty(Context))
3416 return Error(Loc, "branch condition must have 'i1' type");
3418 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3419 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3420 ParseToken(lltok::comma, "expected ',' after true destination") ||
3421 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3424 Inst = BranchInst::Create(Op1, Op2, Op0);
3430 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3432 /// ::= (TypeAndValue ',' TypeAndValue)*
3433 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3434 LocTy CondLoc, BBLoc;
3436 BasicBlock *DefaultBB;
3437 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3438 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3439 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3440 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3443 if (!Cond->getType()->isIntegerTy())
3444 return Error(CondLoc, "switch condition must have integer type");
3446 // Parse the jump table pairs.
3447 SmallPtrSet<Value*, 32> SeenCases;
3448 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3449 while (Lex.getKind() != lltok::rsquare) {
3453 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3454 ParseToken(lltok::comma, "expected ',' after case value") ||
3455 ParseTypeAndBasicBlock(DestBB, PFS))
3458 if (!SeenCases.insert(Constant))
3459 return Error(CondLoc, "duplicate case value in switch");
3460 if (!isa<ConstantInt>(Constant))
3461 return Error(CondLoc, "case value is not a constant integer");
3463 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3466 Lex.Lex(); // Eat the ']'.
3468 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3469 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3470 SI->addCase(Table[i].first, Table[i].second);
3477 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3478 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3481 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3482 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3483 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3486 if (!Address->getType()->isPointerTy())
3487 return Error(AddrLoc, "indirectbr address must have pointer type");
3489 // Parse the destination list.
3490 SmallVector<BasicBlock*, 16> DestList;
3492 if (Lex.getKind() != lltok::rsquare) {
3494 if (ParseTypeAndBasicBlock(DestBB, PFS))
3496 DestList.push_back(DestBB);
3498 while (EatIfPresent(lltok::comma)) {
3499 if (ParseTypeAndBasicBlock(DestBB, PFS))
3501 DestList.push_back(DestBB);
3505 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3508 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3509 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3510 IBI->addDestination(DestList[i]);
3517 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3518 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3519 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3520 LocTy CallLoc = Lex.getLoc();
3521 AttrBuilder RetAttrs, FnAttrs;
3522 std::vector<unsigned> FwdRefAttrGrps;
3528 SmallVector<ParamInfo, 16> ArgList;
3530 BasicBlock *NormalBB, *UnwindBB;
3531 if (ParseOptionalCallingConv(CC) ||
3532 ParseOptionalReturnAttrs(RetAttrs) ||
3533 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3534 ParseValID(CalleeID) ||
3535 ParseParameterList(ArgList, PFS) ||
3536 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3538 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3539 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3540 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3541 ParseTypeAndBasicBlock(UnwindBB, PFS))
3544 // If RetType is a non-function pointer type, then this is the short syntax
3545 // for the call, which means that RetType is just the return type. Infer the
3546 // rest of the function argument types from the arguments that are present.
3547 PointerType *PFTy = 0;
3548 FunctionType *Ty = 0;
3549 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3550 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3551 // Pull out the types of all of the arguments...
3552 std::vector<Type*> ParamTypes;
3553 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3554 ParamTypes.push_back(ArgList[i].V->getType());
3556 if (!FunctionType::isValidReturnType(RetType))
3557 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3559 Ty = FunctionType::get(RetType, ParamTypes, false);
3560 PFTy = PointerType::getUnqual(Ty);
3563 // Look up the callee.
3565 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3567 // Set up the Attribute for the function.
3568 SmallVector<AttributeSet, 8> Attrs;
3569 if (RetAttrs.hasAttributes())
3570 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3571 AttributeSet::ReturnIndex,
3574 SmallVector<Value*, 8> Args;
3576 // Loop through FunctionType's arguments and ensure they are specified
3577 // correctly. Also, gather any parameter attributes.
3578 FunctionType::param_iterator I = Ty->param_begin();
3579 FunctionType::param_iterator E = Ty->param_end();
3580 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3581 Type *ExpectedTy = 0;
3584 } else if (!Ty->isVarArg()) {
3585 return Error(ArgList[i].Loc, "too many arguments specified");
3588 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3589 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3590 getTypeString(ExpectedTy) + "'");
3591 Args.push_back(ArgList[i].V);
3592 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3593 AttrBuilder B(ArgList[i].Attrs, i + 1);
3594 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3599 return Error(CallLoc, "not enough parameters specified for call");
3601 if (FnAttrs.hasAttributes())
3602 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3603 AttributeSet::FunctionIndex,
3606 // Finish off the Attribute and check them
3607 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3609 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3610 II->setCallingConv(CC);
3611 II->setAttributes(PAL);
3612 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
3618 /// ::= 'resume' TypeAndValue
3619 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3620 Value *Exn; LocTy ExnLoc;
3621 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3624 ResumeInst *RI = ResumeInst::Create(Exn);
3629 //===----------------------------------------------------------------------===//
3630 // Binary Operators.
3631 //===----------------------------------------------------------------------===//
3634 /// ::= ArithmeticOps TypeAndValue ',' Value
3636 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3637 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3638 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3639 unsigned Opc, unsigned OperandType) {
3640 LocTy Loc; Value *LHS, *RHS;
3641 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3642 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3643 ParseValue(LHS->getType(), RHS, PFS))
3647 switch (OperandType) {
3648 default: llvm_unreachable("Unknown operand type!");
3649 case 0: // int or FP.
3650 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3651 LHS->getType()->isFPOrFPVectorTy();
3653 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3654 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3658 return Error(Loc, "invalid operand type for instruction");
3660 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3665 /// ::= ArithmeticOps TypeAndValue ',' Value {
3666 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3668 LocTy Loc; Value *LHS, *RHS;
3669 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3670 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3671 ParseValue(LHS->getType(), RHS, PFS))
3674 if (!LHS->getType()->isIntOrIntVectorTy())
3675 return Error(Loc,"instruction requires integer or integer vector operands");
3677 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3683 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3684 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3685 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3687 // Parse the integer/fp comparison predicate.
3691 if (ParseCmpPredicate(Pred, Opc) ||
3692 ParseTypeAndValue(LHS, Loc, PFS) ||
3693 ParseToken(lltok::comma, "expected ',' after compare value") ||
3694 ParseValue(LHS->getType(), RHS, PFS))
3697 if (Opc == Instruction::FCmp) {
3698 if (!LHS->getType()->isFPOrFPVectorTy())
3699 return Error(Loc, "fcmp requires floating point operands");
3700 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3702 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3703 if (!LHS->getType()->isIntOrIntVectorTy() &&
3704 !LHS->getType()->getScalarType()->isPointerTy())
3705 return Error(Loc, "icmp requires integer operands");
3706 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3711 //===----------------------------------------------------------------------===//
3712 // Other Instructions.
3713 //===----------------------------------------------------------------------===//
3717 /// ::= CastOpc TypeAndValue 'to' Type
3718 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3723 if (ParseTypeAndValue(Op, Loc, PFS) ||
3724 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3728 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3729 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3730 return Error(Loc, "invalid cast opcode for cast from '" +
3731 getTypeString(Op->getType()) + "' to '" +
3732 getTypeString(DestTy) + "'");
3734 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3739 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3740 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3742 Value *Op0, *Op1, *Op2;
3743 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3744 ParseToken(lltok::comma, "expected ',' after select condition") ||
3745 ParseTypeAndValue(Op1, PFS) ||
3746 ParseToken(lltok::comma, "expected ',' after select value") ||
3747 ParseTypeAndValue(Op2, PFS))
3750 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3751 return Error(Loc, Reason);
3753 Inst = SelectInst::Create(Op0, Op1, Op2);
3758 /// ::= 'va_arg' TypeAndValue ',' Type
3759 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3763 if (ParseTypeAndValue(Op, PFS) ||
3764 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3765 ParseType(EltTy, TypeLoc))
3768 if (!EltTy->isFirstClassType())
3769 return Error(TypeLoc, "va_arg requires operand with first class type");
3771 Inst = new VAArgInst(Op, EltTy);
3775 /// ParseExtractElement
3776 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3777 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3780 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3781 ParseToken(lltok::comma, "expected ',' after extract value") ||
3782 ParseTypeAndValue(Op1, PFS))
3785 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3786 return Error(Loc, "invalid extractelement operands");
3788 Inst = ExtractElementInst::Create(Op0, Op1);
3792 /// ParseInsertElement
3793 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3794 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3796 Value *Op0, *Op1, *Op2;
3797 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3798 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3799 ParseTypeAndValue(Op1, PFS) ||
3800 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3801 ParseTypeAndValue(Op2, PFS))
3804 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3805 return Error(Loc, "invalid insertelement operands");
3807 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3811 /// ParseShuffleVector
3812 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3813 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3815 Value *Op0, *Op1, *Op2;
3816 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3817 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3818 ParseTypeAndValue(Op1, PFS) ||
3819 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3820 ParseTypeAndValue(Op2, PFS))
3823 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3824 return Error(Loc, "invalid shufflevector operands");
3826 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3831 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3832 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3833 Type *Ty = 0; LocTy TypeLoc;
3836 if (ParseType(Ty, TypeLoc) ||
3837 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3838 ParseValue(Ty, Op0, PFS) ||
3839 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3840 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3841 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3844 bool AteExtraComma = false;
3845 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3847 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3849 if (!EatIfPresent(lltok::comma))
3852 if (Lex.getKind() == lltok::MetadataVar) {
3853 AteExtraComma = true;
3857 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3858 ParseValue(Ty, Op0, PFS) ||
3859 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3860 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3861 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3865 if (!Ty->isFirstClassType())
3866 return Error(TypeLoc, "phi node must have first class type");
3868 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
3869 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3870 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3872 return AteExtraComma ? InstExtraComma : InstNormal;
3876 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
3878 /// ::= 'catch' TypeAndValue
3880 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
3881 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
3882 Type *Ty = 0; LocTy TyLoc;
3883 Value *PersFn; LocTy PersFnLoc;
3885 if (ParseType(Ty, TyLoc) ||
3886 ParseToken(lltok::kw_personality, "expected 'personality'") ||
3887 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
3890 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
3891 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
3893 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
3894 LandingPadInst::ClauseType CT;
3895 if (EatIfPresent(lltok::kw_catch))
3896 CT = LandingPadInst::Catch;
3897 else if (EatIfPresent(lltok::kw_filter))
3898 CT = LandingPadInst::Filter;
3900 return TokError("expected 'catch' or 'filter' clause type");
3902 Value *V; LocTy VLoc;
3903 if (ParseTypeAndValue(V, VLoc, PFS)) {
3908 // A 'catch' type expects a non-array constant. A filter clause expects an
3910 if (CT == LandingPadInst::Catch) {
3911 if (isa<ArrayType>(V->getType()))
3912 Error(VLoc, "'catch' clause has an invalid type");
3914 if (!isa<ArrayType>(V->getType()))
3915 Error(VLoc, "'filter' clause has an invalid type");
3926 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3927 /// ParameterList OptionalAttrs
3928 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3930 AttrBuilder RetAttrs, FnAttrs;
3931 std::vector<unsigned> FwdRefAttrGrps;
3937 SmallVector<ParamInfo, 16> ArgList;
3938 LocTy CallLoc = Lex.getLoc();
3940 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3941 ParseOptionalCallingConv(CC) ||
3942 ParseOptionalReturnAttrs(RetAttrs) ||
3943 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3944 ParseValID(CalleeID) ||
3945 ParseParameterList(ArgList, PFS) ||
3946 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3950 // If RetType is a non-function pointer type, then this is the short syntax
3951 // for the call, which means that RetType is just the return type. Infer the
3952 // rest of the function argument types from the arguments that are present.
3953 PointerType *PFTy = 0;
3954 FunctionType *Ty = 0;
3955 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3956 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3957 // Pull out the types of all of the arguments...
3958 std::vector<Type*> ParamTypes;
3959 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3960 ParamTypes.push_back(ArgList[i].V->getType());
3962 if (!FunctionType::isValidReturnType(RetType))
3963 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3965 Ty = FunctionType::get(RetType, ParamTypes, false);
3966 PFTy = PointerType::getUnqual(Ty);
3969 // Look up the callee.
3971 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3973 // Set up the Attribute for the function.
3974 SmallVector<AttributeSet, 8> Attrs;
3975 if (RetAttrs.hasAttributes())
3976 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3977 AttributeSet::ReturnIndex,
3980 SmallVector<Value*, 8> Args;
3982 // Loop through FunctionType's arguments and ensure they are specified
3983 // correctly. Also, gather any parameter attributes.
3984 FunctionType::param_iterator I = Ty->param_begin();
3985 FunctionType::param_iterator E = Ty->param_end();
3986 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3987 Type *ExpectedTy = 0;
3990 } else if (!Ty->isVarArg()) {
3991 return Error(ArgList[i].Loc, "too many arguments specified");
3994 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3995 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3996 getTypeString(ExpectedTy) + "'");
3997 Args.push_back(ArgList[i].V);
3998 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3999 AttrBuilder B(ArgList[i].Attrs, i + 1);
4000 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4005 return Error(CallLoc, "not enough parameters specified for call");
4007 if (FnAttrs.hasAttributes())
4008 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4009 AttributeSet::FunctionIndex,
4012 // Finish off the Attribute and check them
4013 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4015 CallInst *CI = CallInst::Create(Callee, Args);
4016 CI->setTailCall(isTail);
4017 CI->setCallingConv(CC);
4018 CI->setAttributes(PAL);
4019 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
4024 //===----------------------------------------------------------------------===//
4025 // Memory Instructions.
4026 //===----------------------------------------------------------------------===//
4029 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
4030 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
4033 unsigned Alignment = 0;
4035 if (ParseType(Ty)) return true;
4037 bool AteExtraComma = false;
4038 if (EatIfPresent(lltok::comma)) {
4039 if (Lex.getKind() == lltok::kw_align) {
4040 if (ParseOptionalAlignment(Alignment)) return true;
4041 } else if (Lex.getKind() == lltok::MetadataVar) {
4042 AteExtraComma = true;
4044 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
4045 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4050 if (Size && !Size->getType()->isIntegerTy())
4051 return Error(SizeLoc, "element count must have integer type");
4053 Inst = new AllocaInst(Ty, Size, Alignment);
4054 return AteExtraComma ? InstExtraComma : InstNormal;
4058 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
4059 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
4060 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4061 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
4062 Value *Val; LocTy Loc;
4063 unsigned Alignment = 0;
4064 bool AteExtraComma = false;
4065 bool isAtomic = false;
4066 AtomicOrdering Ordering = NotAtomic;
4067 SynchronizationScope Scope = CrossThread;
4069 if (Lex.getKind() == lltok::kw_atomic) {
4074 bool isVolatile = false;
4075 if (Lex.getKind() == lltok::kw_volatile) {
4080 if (ParseTypeAndValue(Val, Loc, PFS) ||
4081 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4082 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4085 if (!Val->getType()->isPointerTy() ||
4086 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
4087 return Error(Loc, "load operand must be a pointer to a first class type");
4088 if (isAtomic && !Alignment)
4089 return Error(Loc, "atomic load must have explicit non-zero alignment");
4090 if (Ordering == Release || Ordering == AcquireRelease)
4091 return Error(Loc, "atomic load cannot use Release ordering");
4093 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
4094 return AteExtraComma ? InstExtraComma : InstNormal;
4099 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
4100 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
4101 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4102 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
4103 Value *Val, *Ptr; LocTy Loc, PtrLoc;
4104 unsigned Alignment = 0;
4105 bool AteExtraComma = false;
4106 bool isAtomic = false;
4107 AtomicOrdering Ordering = NotAtomic;
4108 SynchronizationScope Scope = CrossThread;
4110 if (Lex.getKind() == lltok::kw_atomic) {
4115 bool isVolatile = false;
4116 if (Lex.getKind() == lltok::kw_volatile) {
4121 if (ParseTypeAndValue(Val, Loc, PFS) ||
4122 ParseToken(lltok::comma, "expected ',' after store operand") ||
4123 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4124 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4125 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4128 if (!Ptr->getType()->isPointerTy())
4129 return Error(PtrLoc, "store operand must be a pointer");
4130 if (!Val->getType()->isFirstClassType())
4131 return Error(Loc, "store operand must be a first class value");
4132 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4133 return Error(Loc, "stored value and pointer type do not match");
4134 if (isAtomic && !Alignment)
4135 return Error(Loc, "atomic store must have explicit non-zero alignment");
4136 if (Ordering == Acquire || Ordering == AcquireRelease)
4137 return Error(Loc, "atomic store cannot use Acquire ordering");
4139 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
4140 return AteExtraComma ? InstExtraComma : InstNormal;
4144 /// ::= 'cmpxchg' 'volatile'? TypeAndValue ',' TypeAndValue ',' TypeAndValue
4145 /// 'singlethread'? AtomicOrdering
4146 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
4147 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
4148 bool AteExtraComma = false;
4149 AtomicOrdering Ordering = NotAtomic;
4150 SynchronizationScope Scope = CrossThread;
4151 bool isVolatile = false;
4153 if (EatIfPresent(lltok::kw_volatile))
4156 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4157 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
4158 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
4159 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
4160 ParseTypeAndValue(New, NewLoc, PFS) ||
4161 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4164 if (Ordering == Unordered)
4165 return TokError("cmpxchg cannot be unordered");
4166 if (!Ptr->getType()->isPointerTy())
4167 return Error(PtrLoc, "cmpxchg operand must be a pointer");
4168 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
4169 return Error(CmpLoc, "compare value and pointer type do not match");
4170 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
4171 return Error(NewLoc, "new value and pointer type do not match");
4172 if (!New->getType()->isIntegerTy())
4173 return Error(NewLoc, "cmpxchg operand must be an integer");
4174 unsigned Size = New->getType()->getPrimitiveSizeInBits();
4175 if (Size < 8 || (Size & (Size - 1)))
4176 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
4179 AtomicCmpXchgInst *CXI =
4180 new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, Scope);
4181 CXI->setVolatile(isVolatile);
4183 return AteExtraComma ? InstExtraComma : InstNormal;
4187 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
4188 /// 'singlethread'? AtomicOrdering
4189 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
4190 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
4191 bool AteExtraComma = false;
4192 AtomicOrdering Ordering = NotAtomic;
4193 SynchronizationScope Scope = CrossThread;
4194 bool isVolatile = false;
4195 AtomicRMWInst::BinOp Operation;
4197 if (EatIfPresent(lltok::kw_volatile))
4200 switch (Lex.getKind()) {
4201 default: return TokError("expected binary operation in atomicrmw");
4202 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
4203 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
4204 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
4205 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
4206 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
4207 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
4208 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
4209 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
4210 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
4211 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
4212 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
4214 Lex.Lex(); // Eat the operation.
4216 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4217 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
4218 ParseTypeAndValue(Val, ValLoc, PFS) ||
4219 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4222 if (Ordering == Unordered)
4223 return TokError("atomicrmw cannot be unordered");
4224 if (!Ptr->getType()->isPointerTy())
4225 return Error(PtrLoc, "atomicrmw operand must be a pointer");
4226 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4227 return Error(ValLoc, "atomicrmw value and pointer type do not match");
4228 if (!Val->getType()->isIntegerTy())
4229 return Error(ValLoc, "atomicrmw operand must be an integer");
4230 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
4231 if (Size < 8 || (Size & (Size - 1)))
4232 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
4235 AtomicRMWInst *RMWI =
4236 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
4237 RMWI->setVolatile(isVolatile);
4239 return AteExtraComma ? InstExtraComma : InstNormal;
4243 /// ::= 'fence' 'singlethread'? AtomicOrdering
4244 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
4245 AtomicOrdering Ordering = NotAtomic;
4246 SynchronizationScope Scope = CrossThread;
4247 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4250 if (Ordering == Unordered)
4251 return TokError("fence cannot be unordered");
4252 if (Ordering == Monotonic)
4253 return TokError("fence cannot be monotonic");
4255 Inst = new FenceInst(Context, Ordering, Scope);
4259 /// ParseGetElementPtr
4260 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
4261 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
4266 bool InBounds = EatIfPresent(lltok::kw_inbounds);
4268 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4270 Type *BaseType = Ptr->getType();
4271 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
4272 if (!BasePointerType)
4273 return Error(Loc, "base of getelementptr must be a pointer");
4275 SmallVector<Value*, 16> Indices;
4276 bool AteExtraComma = false;
4277 while (EatIfPresent(lltok::comma)) {
4278 if (Lex.getKind() == lltok::MetadataVar) {
4279 AteExtraComma = true;
4282 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4283 if (!Val->getType()->getScalarType()->isIntegerTy())
4284 return Error(EltLoc, "getelementptr index must be an integer");
4285 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4286 return Error(EltLoc, "getelementptr index type missmatch");
4287 if (Val->getType()->isVectorTy()) {
4288 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4289 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4290 if (ValNumEl != PtrNumEl)
4291 return Error(EltLoc,
4292 "getelementptr vector index has a wrong number of elements");
4294 Indices.push_back(Val);
4297 if (!Indices.empty() && !BasePointerType->getElementType()->isSized())
4298 return Error(Loc, "base element of getelementptr must be sized");
4300 if (!GetElementPtrInst::getIndexedType(BaseType, Indices))
4301 return Error(Loc, "invalid getelementptr indices");
4302 Inst = GetElementPtrInst::Create(Ptr, Indices);
4304 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4305 return AteExtraComma ? InstExtraComma : InstNormal;
4308 /// ParseExtractValue
4309 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4310 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4311 Value *Val; LocTy Loc;
4312 SmallVector<unsigned, 4> Indices;
4314 if (ParseTypeAndValue(Val, Loc, PFS) ||
4315 ParseIndexList(Indices, AteExtraComma))
4318 if (!Val->getType()->isAggregateType())
4319 return Error(Loc, "extractvalue operand must be aggregate type");
4321 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4322 return Error(Loc, "invalid indices for extractvalue");
4323 Inst = ExtractValueInst::Create(Val, Indices);
4324 return AteExtraComma ? InstExtraComma : InstNormal;
4327 /// ParseInsertValue
4328 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4329 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4330 Value *Val0, *Val1; LocTy Loc0, Loc1;
4331 SmallVector<unsigned, 4> Indices;
4333 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4334 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4335 ParseTypeAndValue(Val1, Loc1, PFS) ||
4336 ParseIndexList(Indices, AteExtraComma))
4339 if (!Val0->getType()->isAggregateType())
4340 return Error(Loc0, "insertvalue operand must be aggregate type");
4342 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4343 return Error(Loc0, "invalid indices for insertvalue");
4344 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4345 return AteExtraComma ? InstExtraComma : InstNormal;
4348 //===----------------------------------------------------------------------===//
4349 // Embedded metadata.
4350 //===----------------------------------------------------------------------===//
4352 /// ParseMDNodeVector
4353 /// ::= Element (',' Element)*
4355 /// ::= 'null' | TypeAndValue
4356 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4357 PerFunctionState *PFS) {
4358 // Check for an empty list.
4359 if (Lex.getKind() == lltok::rbrace)
4363 // Null is a special case since it is typeless.
4364 if (EatIfPresent(lltok::kw_null)) {
4370 if (ParseTypeAndValue(V, PFS)) return true;
4372 } while (EatIfPresent(lltok::comma));