1 //===-- LLParser.cpp - Parser Class ---------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the parser class for .ll files.
12 //===----------------------------------------------------------------------===//
15 #include "llvm/ADT/SmallPtrSet.h"
16 #include "llvm/AutoUpgrade.h"
17 #include "llvm/IR/CallingConv.h"
18 #include "llvm/IR/Constants.h"
19 #include "llvm/IR/DerivedTypes.h"
20 #include "llvm/IR/InlineAsm.h"
21 #include "llvm/IR/Instructions.h"
22 #include "llvm/IR/Module.h"
23 #include "llvm/IR/Operator.h"
24 #include "llvm/IR/ValueSymbolTable.h"
25 #include "llvm/Support/ErrorHandling.h"
26 #include "llvm/Support/raw_ostream.h"
29 static std::string getTypeString(Type *T) {
31 raw_string_ostream Tmp(Result);
36 /// Run: module ::= toplevelentity*
37 bool LLParser::Run() {
41 return ParseTopLevelEntities() ||
42 ValidateEndOfModule();
45 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
47 bool LLParser::ValidateEndOfModule() {
48 // Handle any instruction metadata forward references.
49 if (!ForwardRefInstMetadata.empty()) {
50 for (DenseMap<Instruction*, std::vector<MDRef> >::iterator
51 I = ForwardRefInstMetadata.begin(), E = ForwardRefInstMetadata.end();
53 Instruction *Inst = I->first;
54 const std::vector<MDRef> &MDList = I->second;
56 for (unsigned i = 0, e = MDList.size(); i != e; ++i) {
57 unsigned SlotNo = MDList[i].MDSlot;
59 if (SlotNo >= NumberedMetadata.size() || NumberedMetadata[SlotNo] == 0)
60 return Error(MDList[i].Loc, "use of undefined metadata '!" +
62 Inst->setMetadata(MDList[i].MDKind, NumberedMetadata[SlotNo]);
65 ForwardRefInstMetadata.clear();
68 // Handle any function attribute group forward references.
69 for (std::map<Value*, std::vector<unsigned> >::iterator
70 I = ForwardRefAttrGroups.begin(), E = ForwardRefAttrGroups.end();
73 std::vector<unsigned> &Vec = I->second;
76 for (std::vector<unsigned>::iterator VI = Vec.begin(), VE = Vec.end();
78 B.merge(NumberedAttrBuilders[*VI]);
80 if (Function *Fn = dyn_cast<Function>(V)) {
81 AttributeSet AS = Fn->getAttributes();
82 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
83 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
84 AS.getFnAttributes());
88 // If the alignment was parsed as an attribute, move to the alignment
90 if (FnAttrs.hasAlignmentAttr()) {
91 Fn->setAlignment(FnAttrs.getAlignment());
92 FnAttrs.removeAttribute(Attribute::Alignment);
95 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
96 AttributeSet::get(Context,
97 AttributeSet::FunctionIndex,
99 Fn->setAttributes(AS);
100 } else if (CallInst *CI = dyn_cast<CallInst>(V)) {
101 AttributeSet AS = CI->getAttributes();
102 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
103 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
104 AS.getFnAttributes());
106 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
107 AttributeSet::get(Context,
108 AttributeSet::FunctionIndex,
110 CI->setAttributes(AS);
111 } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
112 AttributeSet AS = II->getAttributes();
113 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
114 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
115 AS.getFnAttributes());
117 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
118 AttributeSet::get(Context,
119 AttributeSet::FunctionIndex,
121 II->setAttributes(AS);
123 llvm_unreachable("invalid object with forward attribute group reference");
127 // If there are entries in ForwardRefBlockAddresses at this point, they are
128 // references after the function was defined. Resolve those now.
129 while (!ForwardRefBlockAddresses.empty()) {
130 // Okay, we are referencing an already-parsed function, resolve them now.
132 const ValID &Fn = ForwardRefBlockAddresses.begin()->first;
133 if (Fn.Kind == ValID::t_GlobalName)
134 TheFn = M->getFunction(Fn.StrVal);
135 else if (Fn.UIntVal < NumberedVals.size())
136 TheFn = dyn_cast<Function>(NumberedVals[Fn.UIntVal]);
139 return Error(Fn.Loc, "unknown function referenced by blockaddress");
141 // Resolve all these references.
142 if (ResolveForwardRefBlockAddresses(TheFn,
143 ForwardRefBlockAddresses.begin()->second,
147 ForwardRefBlockAddresses.erase(ForwardRefBlockAddresses.begin());
150 for (unsigned i = 0, e = NumberedTypes.size(); i != e; ++i)
151 if (NumberedTypes[i].second.isValid())
152 return Error(NumberedTypes[i].second,
153 "use of undefined type '%" + Twine(i) + "'");
155 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
156 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
157 if (I->second.second.isValid())
158 return Error(I->second.second,
159 "use of undefined type named '" + I->getKey() + "'");
161 if (!ForwardRefVals.empty())
162 return Error(ForwardRefVals.begin()->second.second,
163 "use of undefined value '@" + ForwardRefVals.begin()->first +
166 if (!ForwardRefValIDs.empty())
167 return Error(ForwardRefValIDs.begin()->second.second,
168 "use of undefined value '@" +
169 Twine(ForwardRefValIDs.begin()->first) + "'");
171 if (!ForwardRefMDNodes.empty())
172 return Error(ForwardRefMDNodes.begin()->second.second,
173 "use of undefined metadata '!" +
174 Twine(ForwardRefMDNodes.begin()->first) + "'");
177 // Look for intrinsic functions and CallInst that need to be upgraded
178 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
179 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
184 bool LLParser::ResolveForwardRefBlockAddresses(Function *TheFn,
185 std::vector<std::pair<ValID, GlobalValue*> > &Refs,
186 PerFunctionState *PFS) {
187 // Loop over all the references, resolving them.
188 for (unsigned i = 0, e = Refs.size(); i != e; ++i) {
191 if (Refs[i].first.Kind == ValID::t_LocalName)
192 Res = PFS->GetBB(Refs[i].first.StrVal, Refs[i].first.Loc);
194 Res = PFS->GetBB(Refs[i].first.UIntVal, Refs[i].first.Loc);
195 } else if (Refs[i].first.Kind == ValID::t_LocalID) {
196 return Error(Refs[i].first.Loc,
197 "cannot take address of numeric label after the function is defined");
199 Res = dyn_cast_or_null<BasicBlock>(
200 TheFn->getValueSymbolTable().lookup(Refs[i].first.StrVal));
204 return Error(Refs[i].first.Loc,
205 "referenced value is not a basic block");
207 // Get the BlockAddress for this and update references to use it.
208 BlockAddress *BA = BlockAddress::get(TheFn, Res);
209 Refs[i].second->replaceAllUsesWith(BA);
210 Refs[i].second->eraseFromParent();
216 //===----------------------------------------------------------------------===//
217 // Top-Level Entities
218 //===----------------------------------------------------------------------===//
220 bool LLParser::ParseTopLevelEntities() {
222 switch (Lex.getKind()) {
223 default: return TokError("expected top-level entity");
224 case lltok::Eof: return false;
225 case lltok::kw_declare: if (ParseDeclare()) return true; break;
226 case lltok::kw_define: if (ParseDefine()) return true; break;
227 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
228 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
229 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
230 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
231 case lltok::LocalVar: if (ParseNamedType()) return true; break;
232 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
233 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
234 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
235 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
237 // The Global variable production with no name can have many different
238 // optional leading prefixes, the production is:
239 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
240 // OptionalAddrSpace OptionalUnNammedAddr
241 // ('constant'|'global') ...
242 case lltok::kw_private: // OptionalLinkage
243 case lltok::kw_linker_private: // OptionalLinkage
244 case lltok::kw_linker_private_weak: // OptionalLinkage
245 case lltok::kw_linker_private_weak_def_auto: // FIXME: backwards compat.
246 case lltok::kw_internal: // OptionalLinkage
247 case lltok::kw_weak: // OptionalLinkage
248 case lltok::kw_weak_odr: // OptionalLinkage
249 case lltok::kw_linkonce: // OptionalLinkage
250 case lltok::kw_linkonce_odr: // OptionalLinkage
251 case lltok::kw_linkonce_odr_auto_hide: // OptionalLinkage
252 case lltok::kw_appending: // OptionalLinkage
253 case lltok::kw_dllexport: // OptionalLinkage
254 case lltok::kw_common: // OptionalLinkage
255 case lltok::kw_dllimport: // OptionalLinkage
256 case lltok::kw_extern_weak: // OptionalLinkage
257 case lltok::kw_external: { // OptionalLinkage
258 unsigned Linkage, Visibility;
259 if (ParseOptionalLinkage(Linkage) ||
260 ParseOptionalVisibility(Visibility) ||
261 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
265 case lltok::kw_default: // OptionalVisibility
266 case lltok::kw_hidden: // OptionalVisibility
267 case lltok::kw_protected: { // OptionalVisibility
269 if (ParseOptionalVisibility(Visibility) ||
270 ParseGlobal("", SMLoc(), 0, false, Visibility))
275 case lltok::kw_thread_local: // OptionalThreadLocal
276 case lltok::kw_addrspace: // OptionalAddrSpace
277 case lltok::kw_constant: // GlobalType
278 case lltok::kw_global: // GlobalType
279 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
282 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
289 /// ::= 'module' 'asm' STRINGCONSTANT
290 bool LLParser::ParseModuleAsm() {
291 assert(Lex.getKind() == lltok::kw_module);
295 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
296 ParseStringConstant(AsmStr)) return true;
298 M->appendModuleInlineAsm(AsmStr);
303 /// ::= 'target' 'triple' '=' STRINGCONSTANT
304 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
305 bool LLParser::ParseTargetDefinition() {
306 assert(Lex.getKind() == lltok::kw_target);
309 default: return TokError("unknown target property");
310 case lltok::kw_triple:
312 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
313 ParseStringConstant(Str))
315 M->setTargetTriple(Str);
317 case lltok::kw_datalayout:
319 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
320 ParseStringConstant(Str))
322 M->setDataLayout(Str);
328 /// ::= 'deplibs' '=' '[' ']'
329 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
330 /// FIXME: Remove in 4.0. Currently parse, but ignore.
331 bool LLParser::ParseDepLibs() {
332 assert(Lex.getKind() == lltok::kw_deplibs);
334 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
335 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
338 if (EatIfPresent(lltok::rsquare))
343 if (ParseStringConstant(Str)) return true;
344 } while (EatIfPresent(lltok::comma));
346 return ParseToken(lltok::rsquare, "expected ']' at end of list");
349 /// ParseUnnamedType:
350 /// ::= LocalVarID '=' 'type' type
351 bool LLParser::ParseUnnamedType() {
352 LocTy TypeLoc = Lex.getLoc();
353 unsigned TypeID = Lex.getUIntVal();
354 Lex.Lex(); // eat LocalVarID;
356 if (ParseToken(lltok::equal, "expected '=' after name") ||
357 ParseToken(lltok::kw_type, "expected 'type' after '='"))
360 if (TypeID >= NumberedTypes.size())
361 NumberedTypes.resize(TypeID+1);
364 if (ParseStructDefinition(TypeLoc, "",
365 NumberedTypes[TypeID], Result)) return true;
367 if (!isa<StructType>(Result)) {
368 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
370 return Error(TypeLoc, "non-struct types may not be recursive");
371 Entry.first = Result;
372 Entry.second = SMLoc();
380 /// ::= LocalVar '=' 'type' type
381 bool LLParser::ParseNamedType() {
382 std::string Name = Lex.getStrVal();
383 LocTy NameLoc = Lex.getLoc();
384 Lex.Lex(); // eat LocalVar.
386 if (ParseToken(lltok::equal, "expected '=' after name") ||
387 ParseToken(lltok::kw_type, "expected 'type' after name"))
391 if (ParseStructDefinition(NameLoc, Name,
392 NamedTypes[Name], Result)) return true;
394 if (!isa<StructType>(Result)) {
395 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
397 return Error(NameLoc, "non-struct types may not be recursive");
398 Entry.first = Result;
399 Entry.second = SMLoc();
407 /// ::= 'declare' FunctionHeader
408 bool LLParser::ParseDeclare() {
409 assert(Lex.getKind() == lltok::kw_declare);
413 return ParseFunctionHeader(F, false);
417 /// ::= 'define' FunctionHeader '{' ...
418 bool LLParser::ParseDefine() {
419 assert(Lex.getKind() == lltok::kw_define);
423 return ParseFunctionHeader(F, true) ||
424 ParseFunctionBody(*F);
430 bool LLParser::ParseGlobalType(bool &IsConstant) {
431 if (Lex.getKind() == lltok::kw_constant)
433 else if (Lex.getKind() == lltok::kw_global)
437 return TokError("expected 'global' or 'constant'");
443 /// ParseUnnamedGlobal:
444 /// OptionalVisibility ALIAS ...
445 /// OptionalLinkage OptionalVisibility ... -> global variable
446 /// GlobalID '=' OptionalVisibility ALIAS ...
447 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
448 bool LLParser::ParseUnnamedGlobal() {
449 unsigned VarID = NumberedVals.size();
451 LocTy NameLoc = Lex.getLoc();
453 // Handle the GlobalID form.
454 if (Lex.getKind() == lltok::GlobalID) {
455 if (Lex.getUIntVal() != VarID)
456 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
458 Lex.Lex(); // eat GlobalID;
460 if (ParseToken(lltok::equal, "expected '=' after name"))
465 unsigned Linkage, Visibility;
466 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
467 ParseOptionalVisibility(Visibility))
470 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
471 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
472 return ParseAlias(Name, NameLoc, Visibility);
475 /// ParseNamedGlobal:
476 /// GlobalVar '=' OptionalVisibility ALIAS ...
477 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
478 bool LLParser::ParseNamedGlobal() {
479 assert(Lex.getKind() == lltok::GlobalVar);
480 LocTy NameLoc = Lex.getLoc();
481 std::string Name = Lex.getStrVal();
485 unsigned Linkage, Visibility;
486 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
487 ParseOptionalLinkage(Linkage, HasLinkage) ||
488 ParseOptionalVisibility(Visibility))
491 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
492 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
493 return ParseAlias(Name, NameLoc, Visibility);
497 // ::= '!' STRINGCONSTANT
498 bool LLParser::ParseMDString(MDString *&Result) {
500 if (ParseStringConstant(Str)) return true;
501 Result = MDString::get(Context, Str);
506 // ::= '!' MDNodeNumber
508 /// This version of ParseMDNodeID returns the slot number and null in the case
509 /// of a forward reference.
510 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
511 // !{ ..., !42, ... }
512 if (ParseUInt32(SlotNo)) return true;
514 // Check existing MDNode.
515 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != 0)
516 Result = NumberedMetadata[SlotNo];
522 bool LLParser::ParseMDNodeID(MDNode *&Result) {
523 // !{ ..., !42, ... }
525 if (ParseMDNodeID(Result, MID)) return true;
527 // If not a forward reference, just return it now.
528 if (Result) return false;
530 // Otherwise, create MDNode forward reference.
531 MDNode *FwdNode = MDNode::getTemporary(Context, ArrayRef<Value*>());
532 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
534 if (NumberedMetadata.size() <= MID)
535 NumberedMetadata.resize(MID+1);
536 NumberedMetadata[MID] = FwdNode;
541 /// ParseNamedMetadata:
542 /// !foo = !{ !1, !2 }
543 bool LLParser::ParseNamedMetadata() {
544 assert(Lex.getKind() == lltok::MetadataVar);
545 std::string Name = Lex.getStrVal();
548 if (ParseToken(lltok::equal, "expected '=' here") ||
549 ParseToken(lltok::exclaim, "Expected '!' here") ||
550 ParseToken(lltok::lbrace, "Expected '{' here"))
553 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
554 if (Lex.getKind() != lltok::rbrace)
556 if (ParseToken(lltok::exclaim, "Expected '!' here"))
560 if (ParseMDNodeID(N)) return true;
562 } while (EatIfPresent(lltok::comma));
564 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
570 /// ParseStandaloneMetadata:
572 bool LLParser::ParseStandaloneMetadata() {
573 assert(Lex.getKind() == lltok::exclaim);
575 unsigned MetadataID = 0;
579 SmallVector<Value *, 16> Elts;
580 if (ParseUInt32(MetadataID) ||
581 ParseToken(lltok::equal, "expected '=' here") ||
582 ParseType(Ty, TyLoc) ||
583 ParseToken(lltok::exclaim, "Expected '!' here") ||
584 ParseToken(lltok::lbrace, "Expected '{' here") ||
585 ParseMDNodeVector(Elts, NULL) ||
586 ParseToken(lltok::rbrace, "expected end of metadata node"))
589 MDNode *Init = MDNode::get(Context, Elts);
591 // See if this was forward referenced, if so, handle it.
592 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
593 FI = ForwardRefMDNodes.find(MetadataID);
594 if (FI != ForwardRefMDNodes.end()) {
595 MDNode *Temp = FI->second.first;
596 Temp->replaceAllUsesWith(Init);
597 MDNode::deleteTemporary(Temp);
598 ForwardRefMDNodes.erase(FI);
600 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
602 if (MetadataID >= NumberedMetadata.size())
603 NumberedMetadata.resize(MetadataID+1);
605 if (NumberedMetadata[MetadataID] != 0)
606 return TokError("Metadata id is already used");
607 NumberedMetadata[MetadataID] = Init;
614 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
617 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
618 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
620 /// Everything through visibility has already been parsed.
622 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
623 unsigned Visibility) {
624 assert(Lex.getKind() == lltok::kw_alias);
627 LocTy LinkageLoc = Lex.getLoc();
628 if (ParseOptionalLinkage(Linkage))
631 if (Linkage != GlobalValue::ExternalLinkage &&
632 Linkage != GlobalValue::WeakAnyLinkage &&
633 Linkage != GlobalValue::WeakODRLinkage &&
634 Linkage != GlobalValue::InternalLinkage &&
635 Linkage != GlobalValue::PrivateLinkage &&
636 Linkage != GlobalValue::LinkerPrivateLinkage &&
637 Linkage != GlobalValue::LinkerPrivateWeakLinkage)
638 return Error(LinkageLoc, "invalid linkage type for alias");
641 LocTy AliaseeLoc = Lex.getLoc();
642 if (Lex.getKind() != lltok::kw_bitcast &&
643 Lex.getKind() != lltok::kw_getelementptr) {
644 if (ParseGlobalTypeAndValue(Aliasee)) return true;
646 // The bitcast dest type is not present, it is implied by the dest type.
648 if (ParseValID(ID)) return true;
649 if (ID.Kind != ValID::t_Constant)
650 return Error(AliaseeLoc, "invalid aliasee");
651 Aliasee = ID.ConstantVal;
654 if (!Aliasee->getType()->isPointerTy())
655 return Error(AliaseeLoc, "alias must have pointer type");
657 // Okay, create the alias but do not insert it into the module yet.
658 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
659 (GlobalValue::LinkageTypes)Linkage, Name,
661 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
663 // See if this value already exists in the symbol table. If so, it is either
664 // a redefinition or a definition of a forward reference.
665 if (GlobalValue *Val = M->getNamedValue(Name)) {
666 // See if this was a redefinition. If so, there is no entry in
668 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
669 I = ForwardRefVals.find(Name);
670 if (I == ForwardRefVals.end())
671 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
673 // Otherwise, this was a definition of forward ref. Verify that types
675 if (Val->getType() != GA->getType())
676 return Error(NameLoc,
677 "forward reference and definition of alias have different types");
679 // If they agree, just RAUW the old value with the alias and remove the
681 Val->replaceAllUsesWith(GA);
682 Val->eraseFromParent();
683 ForwardRefVals.erase(I);
686 // Insert into the module, we know its name won't collide now.
687 M->getAliasList().push_back(GA);
688 assert(GA->getName() == Name && "Should not be a name conflict!");
694 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
695 /// OptionalAddrSpace OptionalUnNammedAddr
696 /// OptionalExternallyInitialized GlobalType Type Const
697 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
698 /// OptionalAddrSpace OptionalUnNammedAddr
699 /// OptionalExternallyInitialized GlobalType Type Const
701 /// Everything through visibility has been parsed already.
703 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
704 unsigned Linkage, bool HasLinkage,
705 unsigned Visibility) {
707 bool IsConstant, UnnamedAddr, IsExternallyInitialized;
708 GlobalVariable::ThreadLocalMode TLM;
709 LocTy UnnamedAddrLoc;
710 LocTy IsExternallyInitializedLoc;
714 if (ParseOptionalThreadLocal(TLM) ||
715 ParseOptionalAddrSpace(AddrSpace) ||
716 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
718 ParseOptionalToken(lltok::kw_externally_initialized,
719 IsExternallyInitialized,
720 &IsExternallyInitializedLoc) ||
721 ParseGlobalType(IsConstant) ||
722 ParseType(Ty, TyLoc))
725 // If the linkage is specified and is external, then no initializer is
728 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
729 Linkage != GlobalValue::ExternalWeakLinkage &&
730 Linkage != GlobalValue::ExternalLinkage)) {
731 if (ParseGlobalValue(Ty, Init))
735 if (Ty->isFunctionTy() || Ty->isLabelTy())
736 return Error(TyLoc, "invalid type for global variable");
738 GlobalVariable *GV = 0;
740 // See if the global was forward referenced, if so, use the global.
742 if (GlobalValue *GVal = M->getNamedValue(Name)) {
743 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
744 return Error(NameLoc, "redefinition of global '@" + Name + "'");
745 GV = cast<GlobalVariable>(GVal);
748 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
749 I = ForwardRefValIDs.find(NumberedVals.size());
750 if (I != ForwardRefValIDs.end()) {
751 GV = cast<GlobalVariable>(I->second.first);
752 ForwardRefValIDs.erase(I);
757 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
758 Name, 0, GlobalVariable::NotThreadLocal,
761 if (GV->getType()->getElementType() != Ty)
763 "forward reference and definition of global have different types");
765 // Move the forward-reference to the correct spot in the module.
766 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
770 NumberedVals.push_back(GV);
772 // Set the parsed properties on the global.
774 GV->setInitializer(Init);
775 GV->setConstant(IsConstant);
776 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
777 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
778 GV->setExternallyInitialized(IsExternallyInitialized);
779 GV->setThreadLocalMode(TLM);
780 GV->setUnnamedAddr(UnnamedAddr);
782 // Parse attributes on the global.
783 while (Lex.getKind() == lltok::comma) {
786 if (Lex.getKind() == lltok::kw_section) {
788 GV->setSection(Lex.getStrVal());
789 if (ParseToken(lltok::StringConstant, "expected global section string"))
791 } else if (Lex.getKind() == lltok::kw_align) {
793 if (ParseOptionalAlignment(Alignment)) return true;
794 GV->setAlignment(Alignment);
796 TokError("unknown global variable property!");
803 /// ParseUnnamedAttrGrp
804 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
805 bool LLParser::ParseUnnamedAttrGrp() {
806 assert(Lex.getKind() == lltok::kw_attributes);
807 LocTy AttrGrpLoc = Lex.getLoc();
810 assert(Lex.getKind() == lltok::AttrGrpID);
811 unsigned VarID = Lex.getUIntVal();
812 std::vector<unsigned> unused;
816 if (ParseToken(lltok::equal, "expected '=' here") ||
817 ParseToken(lltok::lbrace, "expected '{' here") ||
818 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
820 ParseToken(lltok::rbrace, "expected end of attribute group"))
823 if (!NumberedAttrBuilders[VarID].hasAttributes())
824 return Error(AttrGrpLoc, "attribute group has no attributes");
829 /// ParseFnAttributeValuePairs
830 /// ::= <attr> | <attr> '=' <value>
831 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
832 std::vector<unsigned> &FwdRefAttrGrps,
833 bool inAttrGrp, LocTy &NoBuiltinLoc) {
834 bool HaveError = false;
839 lltok::Kind Token = Lex.getKind();
840 if (Token == lltok::kw_nobuiltin)
841 NoBuiltinLoc = Lex.getLoc();
844 if (!inAttrGrp) return HaveError;
845 return Error(Lex.getLoc(), "unterminated attribute group");
850 case lltok::AttrGrpID: {
851 // Allow a function to reference an attribute group:
853 // define void @foo() #1 { ... }
857 "cannot have an attribute group reference in an attribute group");
859 unsigned AttrGrpNum = Lex.getUIntVal();
860 if (inAttrGrp) break;
862 // Save the reference to the attribute group. We'll fill it in later.
863 FwdRefAttrGrps.push_back(AttrGrpNum);
866 // Target-dependent attributes:
867 case lltok::StringConstant: {
868 std::string Attr = Lex.getStrVal();
871 if (EatIfPresent(lltok::equal) &&
872 ParseStringConstant(Val))
875 B.addAttribute(Attr, Val);
879 // Target-independent attributes:
880 case lltok::kw_align: {
881 // As a hack, we allow 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: case lltok::kw_nounwind:
1166 case lltok::kw_alwaysinline: case lltok::kw_optsize:
1167 case lltok::kw_inlinehint: case lltok::kw_readnone:
1168 case lltok::kw_minsize: case lltok::kw_readonly:
1169 case lltok::kw_naked: case lltok::kw_returns_twice:
1170 case lltok::kw_nobuiltin: case lltok::kw_sanitize_address:
1171 case lltok::kw_noimplicitfloat: case lltok::kw_sanitize_memory:
1172 case lltok::kw_noinline: case lltok::kw_sanitize_thread:
1173 case lltok::kw_nonlazybind: case lltok::kw_ssp:
1174 case lltok::kw_noredzone: case lltok::kw_sspreq:
1175 case lltok::kw_noreturn: case lltok::kw_uwtable:
1176 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1184 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1185 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1186 bool HaveError = false;
1191 lltok::Kind Token = Lex.getKind();
1193 default: // End of attributes.
1195 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1196 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1197 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1198 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1201 case lltok::kw_byval:
1202 case lltok::kw_nest:
1203 case lltok::kw_nocapture:
1204 case lltok::kw_returned:
1205 case lltok::kw_sret:
1206 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1209 case lltok::kw_align:
1210 case lltok::kw_alignstack:
1211 case lltok::kw_alwaysinline:
1212 case lltok::kw_inlinehint:
1213 case lltok::kw_minsize:
1214 case lltok::kw_naked:
1215 case lltok::kw_nobuiltin:
1216 case lltok::kw_noduplicate:
1217 case lltok::kw_noimplicitfloat:
1218 case lltok::kw_noinline:
1219 case lltok::kw_nonlazybind:
1220 case lltok::kw_noredzone:
1221 case lltok::kw_noreturn:
1222 case lltok::kw_nounwind:
1223 case lltok::kw_optsize:
1224 case lltok::kw_readnone:
1225 case lltok::kw_readonly:
1226 case lltok::kw_returns_twice:
1227 case lltok::kw_sanitize_address:
1228 case lltok::kw_sanitize_memory:
1229 case lltok::kw_sanitize_thread:
1231 case lltok::kw_sspreq:
1232 case lltok::kw_sspstrong:
1233 case lltok::kw_uwtable:
1234 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1242 /// ParseOptionalLinkage
1245 /// ::= 'linker_private'
1246 /// ::= 'linker_private_weak'
1251 /// ::= 'linkonce_odr'
1252 /// ::= 'linkonce_odr_auto_hide'
1253 /// ::= 'available_externally'
1258 /// ::= 'extern_weak'
1260 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1262 switch (Lex.getKind()) {
1263 default: Res=GlobalValue::ExternalLinkage; return false;
1264 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1265 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1266 case lltok::kw_linker_private_weak:
1267 Res = GlobalValue::LinkerPrivateWeakLinkage;
1269 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1270 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1271 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1272 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1273 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1274 case lltok::kw_linkonce_odr_auto_hide:
1275 case lltok::kw_linker_private_weak_def_auto: // FIXME: For backwards compat.
1276 Res = GlobalValue::LinkOnceODRAutoHideLinkage;
1278 case lltok::kw_available_externally:
1279 Res = GlobalValue::AvailableExternallyLinkage;
1281 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1282 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1283 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1284 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1285 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1286 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1293 /// ParseOptionalVisibility
1299 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1300 switch (Lex.getKind()) {
1301 default: Res = GlobalValue::DefaultVisibility; return false;
1302 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1303 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1304 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1310 /// ParseOptionalCallingConv
1314 /// ::= 'kw_intel_ocl_bicc'
1316 /// ::= 'x86_stdcallcc'
1317 /// ::= 'x86_fastcallcc'
1318 /// ::= 'x86_thiscallcc'
1319 /// ::= 'arm_apcscc'
1320 /// ::= 'arm_aapcscc'
1321 /// ::= 'arm_aapcs_vfpcc'
1322 /// ::= 'msp430_intrcc'
1323 /// ::= 'ptx_kernel'
1324 /// ::= 'ptx_device'
1326 /// ::= 'spir_kernel'
1329 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1330 switch (Lex.getKind()) {
1331 default: CC = CallingConv::C; return false;
1332 case lltok::kw_ccc: CC = CallingConv::C; break;
1333 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1334 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1335 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1336 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1337 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1338 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1339 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1340 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1341 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1342 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1343 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1344 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1345 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1346 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1347 case lltok::kw_cc: {
1348 unsigned ArbitraryCC;
1350 if (ParseUInt32(ArbitraryCC))
1352 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1361 /// ParseInstructionMetadata
1362 /// ::= !dbg !42 (',' !dbg !57)*
1363 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1364 PerFunctionState *PFS) {
1366 if (Lex.getKind() != lltok::MetadataVar)
1367 return TokError("expected metadata after comma");
1369 std::string Name = Lex.getStrVal();
1370 unsigned MDK = M->getMDKindID(Name);
1374 SMLoc Loc = Lex.getLoc();
1376 if (ParseToken(lltok::exclaim, "expected '!' here"))
1379 // This code is similar to that of ParseMetadataValue, however it needs to
1380 // have special-case code for a forward reference; see the comments on
1381 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1382 // at the top level here.
1383 if (Lex.getKind() == lltok::lbrace) {
1385 if (ParseMetadataListValue(ID, PFS))
1387 assert(ID.Kind == ValID::t_MDNode);
1388 Inst->setMetadata(MDK, ID.MDNodeVal);
1390 unsigned NodeID = 0;
1391 if (ParseMDNodeID(Node, NodeID))
1394 // If we got the node, add it to the instruction.
1395 Inst->setMetadata(MDK, Node);
1397 MDRef R = { Loc, MDK, NodeID };
1398 // Otherwise, remember that this should be resolved later.
1399 ForwardRefInstMetadata[Inst].push_back(R);
1403 // If this is the end of the list, we're done.
1404 } while (EatIfPresent(lltok::comma));
1408 /// ParseOptionalAlignment
1411 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1413 if (!EatIfPresent(lltok::kw_align))
1415 LocTy AlignLoc = Lex.getLoc();
1416 if (ParseUInt32(Alignment)) return true;
1417 if (!isPowerOf2_32(Alignment))
1418 return Error(AlignLoc, "alignment is not a power of two");
1419 if (Alignment > Value::MaximumAlignment)
1420 return Error(AlignLoc, "huge alignments are not supported yet");
1424 /// ParseOptionalCommaAlign
1428 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1430 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1431 bool &AteExtraComma) {
1432 AteExtraComma = false;
1433 while (EatIfPresent(lltok::comma)) {
1434 // Metadata at the end is an early exit.
1435 if (Lex.getKind() == lltok::MetadataVar) {
1436 AteExtraComma = true;
1440 if (Lex.getKind() != lltok::kw_align)
1441 return Error(Lex.getLoc(), "expected metadata or 'align'");
1443 if (ParseOptionalAlignment(Alignment)) return true;
1449 /// ParseScopeAndOrdering
1450 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1453 /// This sets Scope and Ordering to the parsed values.
1454 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1455 AtomicOrdering &Ordering) {
1459 Scope = CrossThread;
1460 if (EatIfPresent(lltok::kw_singlethread))
1461 Scope = SingleThread;
1462 switch (Lex.getKind()) {
1463 default: return TokError("Expected ordering on atomic instruction");
1464 case lltok::kw_unordered: Ordering = Unordered; break;
1465 case lltok::kw_monotonic: Ordering = Monotonic; break;
1466 case lltok::kw_acquire: Ordering = Acquire; break;
1467 case lltok::kw_release: Ordering = Release; break;
1468 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1469 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1475 /// ParseOptionalStackAlignment
1477 /// ::= 'alignstack' '(' 4 ')'
1478 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1480 if (!EatIfPresent(lltok::kw_alignstack))
1482 LocTy ParenLoc = Lex.getLoc();
1483 if (!EatIfPresent(lltok::lparen))
1484 return Error(ParenLoc, "expected '('");
1485 LocTy AlignLoc = Lex.getLoc();
1486 if (ParseUInt32(Alignment)) return true;
1487 ParenLoc = Lex.getLoc();
1488 if (!EatIfPresent(lltok::rparen))
1489 return Error(ParenLoc, "expected ')'");
1490 if (!isPowerOf2_32(Alignment))
1491 return Error(AlignLoc, "stack alignment is not a power of two");
1495 /// ParseIndexList - This parses the index list for an insert/extractvalue
1496 /// instruction. This sets AteExtraComma in the case where we eat an extra
1497 /// comma at the end of the line and find that it is followed by metadata.
1498 /// Clients that don't allow metadata can call the version of this function that
1499 /// only takes one argument.
1502 /// ::= (',' uint32)+
1504 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1505 bool &AteExtraComma) {
1506 AteExtraComma = false;
1508 if (Lex.getKind() != lltok::comma)
1509 return TokError("expected ',' as start of index list");
1511 while (EatIfPresent(lltok::comma)) {
1512 if (Lex.getKind() == lltok::MetadataVar) {
1513 AteExtraComma = true;
1517 if (ParseUInt32(Idx)) return true;
1518 Indices.push_back(Idx);
1524 //===----------------------------------------------------------------------===//
1526 //===----------------------------------------------------------------------===//
1528 /// ParseType - Parse a type.
1529 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1530 SMLoc TypeLoc = Lex.getLoc();
1531 switch (Lex.getKind()) {
1533 return TokError("expected type");
1535 // Type ::= 'float' | 'void' (etc)
1536 Result = Lex.getTyVal();
1540 // Type ::= StructType
1541 if (ParseAnonStructType(Result, false))
1544 case lltok::lsquare:
1545 // Type ::= '[' ... ']'
1546 Lex.Lex(); // eat the lsquare.
1547 if (ParseArrayVectorType(Result, false))
1550 case lltok::less: // Either vector or packed struct.
1551 // Type ::= '<' ... '>'
1553 if (Lex.getKind() == lltok::lbrace) {
1554 if (ParseAnonStructType(Result, true) ||
1555 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1557 } else if (ParseArrayVectorType(Result, true))
1560 case lltok::LocalVar: {
1562 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1564 // If the type hasn't been defined yet, create a forward definition and
1565 // remember where that forward def'n was seen (in case it never is defined).
1566 if (Entry.first == 0) {
1567 Entry.first = StructType::create(Context, Lex.getStrVal());
1568 Entry.second = Lex.getLoc();
1570 Result = Entry.first;
1575 case lltok::LocalVarID: {
1577 if (Lex.getUIntVal() >= NumberedTypes.size())
1578 NumberedTypes.resize(Lex.getUIntVal()+1);
1579 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
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);
1585 Entry.second = Lex.getLoc();
1587 Result = Entry.first;
1593 // Parse the type suffixes.
1595 switch (Lex.getKind()) {
1598 if (!AllowVoid && Result->isVoidTy())
1599 return Error(TypeLoc, "void type only allowed for function results");
1602 // Type ::= Type '*'
1604 if (Result->isLabelTy())
1605 return TokError("basic block pointers are invalid");
1606 if (Result->isVoidTy())
1607 return TokError("pointers to void are invalid - use i8* instead");
1608 if (!PointerType::isValidElementType(Result))
1609 return TokError("pointer to this type is invalid");
1610 Result = PointerType::getUnqual(Result);
1614 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1615 case lltok::kw_addrspace: {
1616 if (Result->isLabelTy())
1617 return TokError("basic block pointers are invalid");
1618 if (Result->isVoidTy())
1619 return TokError("pointers to void are invalid; use i8* instead");
1620 if (!PointerType::isValidElementType(Result))
1621 return TokError("pointer to this type is invalid");
1623 if (ParseOptionalAddrSpace(AddrSpace) ||
1624 ParseToken(lltok::star, "expected '*' in address space"))
1627 Result = PointerType::get(Result, AddrSpace);
1631 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1633 if (ParseFunctionType(Result))
1640 /// ParseParameterList
1642 /// ::= '(' Arg (',' Arg)* ')'
1644 /// ::= Type OptionalAttributes Value OptionalAttributes
1645 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1646 PerFunctionState &PFS) {
1647 if (ParseToken(lltok::lparen, "expected '(' in call"))
1650 unsigned AttrIndex = 1;
1651 while (Lex.getKind() != lltok::rparen) {
1652 // If this isn't the first argument, we need a comma.
1653 if (!ArgList.empty() &&
1654 ParseToken(lltok::comma, "expected ',' in argument list"))
1657 // Parse the argument.
1660 AttrBuilder ArgAttrs;
1662 if (ParseType(ArgTy, ArgLoc))
1665 // Otherwise, handle normal operands.
1666 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1668 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1673 Lex.Lex(); // Lex the ')'.
1679 /// ParseArgumentList - Parse the argument list for a function type or function
1681 /// ::= '(' ArgTypeListI ')'
1685 /// ::= ArgTypeList ',' '...'
1686 /// ::= ArgType (',' ArgType)*
1688 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1691 assert(Lex.getKind() == lltok::lparen);
1692 Lex.Lex(); // eat the (.
1694 if (Lex.getKind() == lltok::rparen) {
1696 } else if (Lex.getKind() == lltok::dotdotdot) {
1700 LocTy TypeLoc = Lex.getLoc();
1705 if (ParseType(ArgTy) ||
1706 ParseOptionalParamAttrs(Attrs)) return true;
1708 if (ArgTy->isVoidTy())
1709 return Error(TypeLoc, "argument can not have void type");
1711 if (Lex.getKind() == lltok::LocalVar) {
1712 Name = Lex.getStrVal();
1716 if (!FunctionType::isValidArgumentType(ArgTy))
1717 return Error(TypeLoc, "invalid type for function argument");
1719 unsigned AttrIndex = 1;
1720 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1721 AttributeSet::get(ArgTy->getContext(),
1722 AttrIndex++, Attrs), Name));
1724 while (EatIfPresent(lltok::comma)) {
1725 // Handle ... at end of arg list.
1726 if (EatIfPresent(lltok::dotdotdot)) {
1731 // Otherwise must be an argument type.
1732 TypeLoc = Lex.getLoc();
1733 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1735 if (ArgTy->isVoidTy())
1736 return Error(TypeLoc, "argument can not have void type");
1738 if (Lex.getKind() == lltok::LocalVar) {
1739 Name = Lex.getStrVal();
1745 if (!ArgTy->isFirstClassType())
1746 return Error(TypeLoc, "invalid type for function argument");
1748 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1749 AttributeSet::get(ArgTy->getContext(),
1750 AttrIndex++, Attrs),
1755 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1758 /// ParseFunctionType
1759 /// ::= Type ArgumentList OptionalAttrs
1760 bool LLParser::ParseFunctionType(Type *&Result) {
1761 assert(Lex.getKind() == lltok::lparen);
1763 if (!FunctionType::isValidReturnType(Result))
1764 return TokError("invalid function return type");
1766 SmallVector<ArgInfo, 8> ArgList;
1768 if (ParseArgumentList(ArgList, isVarArg))
1771 // Reject names on the arguments lists.
1772 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1773 if (!ArgList[i].Name.empty())
1774 return Error(ArgList[i].Loc, "argument name invalid in function type");
1775 if (ArgList[i].Attrs.hasAttributes(i + 1))
1776 return Error(ArgList[i].Loc,
1777 "argument attributes invalid in function type");
1780 SmallVector<Type*, 16> ArgListTy;
1781 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1782 ArgListTy.push_back(ArgList[i].Ty);
1784 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1788 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1790 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1791 SmallVector<Type*, 8> Elts;
1792 if (ParseStructBody(Elts)) return true;
1794 Result = StructType::get(Context, Elts, Packed);
1798 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1799 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1800 std::pair<Type*, LocTy> &Entry,
1802 // If the type was already defined, diagnose the redefinition.
1803 if (Entry.first && !Entry.second.isValid())
1804 return Error(TypeLoc, "redefinition of type");
1806 // If we have opaque, just return without filling in the definition for the
1807 // struct. This counts as a definition as far as the .ll file goes.
1808 if (EatIfPresent(lltok::kw_opaque)) {
1809 // This type is being defined, so clear the location to indicate this.
1810 Entry.second = SMLoc();
1812 // If this type number has never been uttered, create it.
1813 if (Entry.first == 0)
1814 Entry.first = StructType::create(Context, Name);
1815 ResultTy = Entry.first;
1819 // If the type starts with '<', then it is either a packed struct or a vector.
1820 bool isPacked = EatIfPresent(lltok::less);
1822 // If we don't have a struct, then we have a random type alias, which we
1823 // accept for compatibility with old files. These types are not allowed to be
1824 // forward referenced and not allowed to be recursive.
1825 if (Lex.getKind() != lltok::lbrace) {
1827 return Error(TypeLoc, "forward references to non-struct type");
1831 return ParseArrayVectorType(ResultTy, true);
1832 return ParseType(ResultTy);
1835 // This type is being defined, so clear the location to indicate this.
1836 Entry.second = SMLoc();
1838 // If this type number has never been uttered, create it.
1839 if (Entry.first == 0)
1840 Entry.first = StructType::create(Context, Name);
1842 StructType *STy = cast<StructType>(Entry.first);
1844 SmallVector<Type*, 8> Body;
1845 if (ParseStructBody(Body) ||
1846 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
1849 STy->setBody(Body, isPacked);
1855 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1858 /// ::= '{' Type (',' Type)* '}'
1859 /// ::= '<' '{' '}' '>'
1860 /// ::= '<' '{' Type (',' Type)* '}' '>'
1861 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
1862 assert(Lex.getKind() == lltok::lbrace);
1863 Lex.Lex(); // Consume the '{'
1865 // Handle the empty struct.
1866 if (EatIfPresent(lltok::rbrace))
1869 LocTy EltTyLoc = Lex.getLoc();
1871 if (ParseType(Ty)) return true;
1874 if (!StructType::isValidElementType(Ty))
1875 return Error(EltTyLoc, "invalid element type for struct");
1877 while (EatIfPresent(lltok::comma)) {
1878 EltTyLoc = Lex.getLoc();
1879 if (ParseType(Ty)) return true;
1881 if (!StructType::isValidElementType(Ty))
1882 return Error(EltTyLoc, "invalid element type for struct");
1887 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
1890 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1891 /// token has already been consumed.
1893 /// ::= '[' APSINTVAL 'x' Types ']'
1894 /// ::= '<' APSINTVAL 'x' Types '>'
1895 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
1896 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1897 Lex.getAPSIntVal().getBitWidth() > 64)
1898 return TokError("expected number in address space");
1900 LocTy SizeLoc = Lex.getLoc();
1901 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1904 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1907 LocTy TypeLoc = Lex.getLoc();
1909 if (ParseType(EltTy)) return true;
1911 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1912 "expected end of sequential type"))
1917 return Error(SizeLoc, "zero element vector is illegal");
1918 if ((unsigned)Size != Size)
1919 return Error(SizeLoc, "size too large for vector");
1920 if (!VectorType::isValidElementType(EltTy))
1921 return Error(TypeLoc, "invalid vector element type");
1922 Result = VectorType::get(EltTy, unsigned(Size));
1924 if (!ArrayType::isValidElementType(EltTy))
1925 return Error(TypeLoc, "invalid array element type");
1926 Result = ArrayType::get(EltTy, Size);
1931 //===----------------------------------------------------------------------===//
1932 // Function Semantic Analysis.
1933 //===----------------------------------------------------------------------===//
1935 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1937 : P(p), F(f), FunctionNumber(functionNumber) {
1939 // Insert unnamed arguments into the NumberedVals list.
1940 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1943 NumberedVals.push_back(AI);
1946 LLParser::PerFunctionState::~PerFunctionState() {
1947 // If there were any forward referenced non-basicblock values, delete them.
1948 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1949 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1950 if (!isa<BasicBlock>(I->second.first)) {
1951 I->second.first->replaceAllUsesWith(
1952 UndefValue::get(I->second.first->getType()));
1953 delete I->second.first;
1954 I->second.first = 0;
1957 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1958 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1959 if (!isa<BasicBlock>(I->second.first)) {
1960 I->second.first->replaceAllUsesWith(
1961 UndefValue::get(I->second.first->getType()));
1962 delete I->second.first;
1963 I->second.first = 0;
1967 bool LLParser::PerFunctionState::FinishFunction() {
1968 // Check to see if someone took the address of labels in this block.
1969 if (!P.ForwardRefBlockAddresses.empty()) {
1971 if (!F.getName().empty()) {
1972 FunctionID.Kind = ValID::t_GlobalName;
1973 FunctionID.StrVal = F.getName();
1975 FunctionID.Kind = ValID::t_GlobalID;
1976 FunctionID.UIntVal = FunctionNumber;
1979 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1980 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1981 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1982 // Resolve all these references.
1983 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1986 P.ForwardRefBlockAddresses.erase(FRBAI);
1990 if (!ForwardRefVals.empty())
1991 return P.Error(ForwardRefVals.begin()->second.second,
1992 "use of undefined value '%" + ForwardRefVals.begin()->first +
1994 if (!ForwardRefValIDs.empty())
1995 return P.Error(ForwardRefValIDs.begin()->second.second,
1996 "use of undefined value '%" +
1997 Twine(ForwardRefValIDs.begin()->first) + "'");
2002 /// GetVal - Get a value with the specified name or ID, creating a
2003 /// forward reference record if needed. This can return null if the value
2004 /// exists but does not have the right type.
2005 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2006 Type *Ty, LocTy Loc) {
2007 // Look this name up in the normal function symbol table.
2008 Value *Val = F.getValueSymbolTable().lookup(Name);
2010 // If this is a forward reference for the value, see if we already created a
2011 // forward ref record.
2013 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2014 I = ForwardRefVals.find(Name);
2015 if (I != ForwardRefVals.end())
2016 Val = I->second.first;
2019 // If we have the value in the symbol table or fwd-ref table, return it.
2021 if (Val->getType() == Ty) return Val;
2022 if (Ty->isLabelTy())
2023 P.Error(Loc, "'%" + Name + "' is not a basic block");
2025 P.Error(Loc, "'%" + Name + "' defined with type '" +
2026 getTypeString(Val->getType()) + "'");
2030 // Don't make placeholders with invalid type.
2031 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2032 P.Error(Loc, "invalid use of a non-first-class type");
2036 // Otherwise, create a new forward reference for this value and remember it.
2038 if (Ty->isLabelTy())
2039 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2041 FwdVal = new Argument(Ty, Name);
2043 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2047 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2049 // Look this name up in the normal function symbol table.
2050 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
2052 // If this is a forward reference for the value, see if we already created a
2053 // forward ref record.
2055 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2056 I = ForwardRefValIDs.find(ID);
2057 if (I != ForwardRefValIDs.end())
2058 Val = I->second.first;
2061 // If we have the value in the symbol table or fwd-ref table, return it.
2063 if (Val->getType() == Ty) return Val;
2064 if (Ty->isLabelTy())
2065 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2067 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2068 getTypeString(Val->getType()) + "'");
2072 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2073 P.Error(Loc, "invalid use of a non-first-class type");
2077 // Otherwise, create a new forward reference for this value and remember it.
2079 if (Ty->isLabelTy())
2080 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2082 FwdVal = new Argument(Ty);
2084 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2088 /// SetInstName - After an instruction is parsed and inserted into its
2089 /// basic block, this installs its name.
2090 bool LLParser::PerFunctionState::SetInstName(int NameID,
2091 const std::string &NameStr,
2092 LocTy NameLoc, Instruction *Inst) {
2093 // If this instruction has void type, it cannot have a name or ID specified.
2094 if (Inst->getType()->isVoidTy()) {
2095 if (NameID != -1 || !NameStr.empty())
2096 return P.Error(NameLoc, "instructions returning void cannot have a name");
2100 // If this was a numbered instruction, verify that the instruction is the
2101 // expected value and resolve any forward references.
2102 if (NameStr.empty()) {
2103 // If neither a name nor an ID was specified, just use the next ID.
2105 NameID = NumberedVals.size();
2107 if (unsigned(NameID) != NumberedVals.size())
2108 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2109 Twine(NumberedVals.size()) + "'");
2111 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2112 ForwardRefValIDs.find(NameID);
2113 if (FI != ForwardRefValIDs.end()) {
2114 if (FI->second.first->getType() != Inst->getType())
2115 return P.Error(NameLoc, "instruction forward referenced with type '" +
2116 getTypeString(FI->second.first->getType()) + "'");
2117 FI->second.first->replaceAllUsesWith(Inst);
2118 delete FI->second.first;
2119 ForwardRefValIDs.erase(FI);
2122 NumberedVals.push_back(Inst);
2126 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2127 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2128 FI = ForwardRefVals.find(NameStr);
2129 if (FI != ForwardRefVals.end()) {
2130 if (FI->second.first->getType() != Inst->getType())
2131 return P.Error(NameLoc, "instruction forward referenced with type '" +
2132 getTypeString(FI->second.first->getType()) + "'");
2133 FI->second.first->replaceAllUsesWith(Inst);
2134 delete FI->second.first;
2135 ForwardRefVals.erase(FI);
2138 // Set the name on the instruction.
2139 Inst->setName(NameStr);
2141 if (Inst->getName() != NameStr)
2142 return P.Error(NameLoc, "multiple definition of local value named '" +
2147 /// GetBB - Get a basic block with the specified name or ID, creating a
2148 /// forward reference record if needed.
2149 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2151 return cast_or_null<BasicBlock>(GetVal(Name,
2152 Type::getLabelTy(F.getContext()), Loc));
2155 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2156 return cast_or_null<BasicBlock>(GetVal(ID,
2157 Type::getLabelTy(F.getContext()), Loc));
2160 /// DefineBB - Define the specified basic block, which is either named or
2161 /// unnamed. If there is an error, this returns null otherwise it returns
2162 /// the block being defined.
2163 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2167 BB = GetBB(NumberedVals.size(), Loc);
2169 BB = GetBB(Name, Loc);
2170 if (BB == 0) return 0; // Already diagnosed error.
2172 // Move the block to the end of the function. Forward ref'd blocks are
2173 // inserted wherever they happen to be referenced.
2174 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2176 // Remove the block from forward ref sets.
2178 ForwardRefValIDs.erase(NumberedVals.size());
2179 NumberedVals.push_back(BB);
2181 // BB forward references are already in the function symbol table.
2182 ForwardRefVals.erase(Name);
2188 //===----------------------------------------------------------------------===//
2190 //===----------------------------------------------------------------------===//
2192 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2193 /// type implied. For example, if we parse "4" we don't know what integer type
2194 /// it has. The value will later be combined with its type and checked for
2195 /// sanity. PFS is used to convert function-local operands of metadata (since
2196 /// metadata operands are not just parsed here but also converted to values).
2197 /// PFS can be null when we are not parsing metadata values inside a function.
2198 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2199 ID.Loc = Lex.getLoc();
2200 switch (Lex.getKind()) {
2201 default: return TokError("expected value token");
2202 case lltok::GlobalID: // @42
2203 ID.UIntVal = Lex.getUIntVal();
2204 ID.Kind = ValID::t_GlobalID;
2206 case lltok::GlobalVar: // @foo
2207 ID.StrVal = Lex.getStrVal();
2208 ID.Kind = ValID::t_GlobalName;
2210 case lltok::LocalVarID: // %42
2211 ID.UIntVal = Lex.getUIntVal();
2212 ID.Kind = ValID::t_LocalID;
2214 case lltok::LocalVar: // %foo
2215 ID.StrVal = Lex.getStrVal();
2216 ID.Kind = ValID::t_LocalName;
2218 case lltok::exclaim: // !42, !{...}, or !"foo"
2219 return ParseMetadataValue(ID, PFS);
2221 ID.APSIntVal = Lex.getAPSIntVal();
2222 ID.Kind = ValID::t_APSInt;
2224 case lltok::APFloat:
2225 ID.APFloatVal = Lex.getAPFloatVal();
2226 ID.Kind = ValID::t_APFloat;
2228 case lltok::kw_true:
2229 ID.ConstantVal = ConstantInt::getTrue(Context);
2230 ID.Kind = ValID::t_Constant;
2232 case lltok::kw_false:
2233 ID.ConstantVal = ConstantInt::getFalse(Context);
2234 ID.Kind = ValID::t_Constant;
2236 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2237 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2238 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2240 case lltok::lbrace: {
2241 // ValID ::= '{' ConstVector '}'
2243 SmallVector<Constant*, 16> Elts;
2244 if (ParseGlobalValueVector(Elts) ||
2245 ParseToken(lltok::rbrace, "expected end of struct constant"))
2248 ID.ConstantStructElts = new Constant*[Elts.size()];
2249 ID.UIntVal = Elts.size();
2250 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2251 ID.Kind = ValID::t_ConstantStruct;
2255 // ValID ::= '<' ConstVector '>' --> Vector.
2256 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2258 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2260 SmallVector<Constant*, 16> Elts;
2261 LocTy FirstEltLoc = Lex.getLoc();
2262 if (ParseGlobalValueVector(Elts) ||
2264 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2265 ParseToken(lltok::greater, "expected end of constant"))
2268 if (isPackedStruct) {
2269 ID.ConstantStructElts = new Constant*[Elts.size()];
2270 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2271 ID.UIntVal = Elts.size();
2272 ID.Kind = ValID::t_PackedConstantStruct;
2277 return Error(ID.Loc, "constant vector must not be empty");
2279 if (!Elts[0]->getType()->isIntegerTy() &&
2280 !Elts[0]->getType()->isFloatingPointTy() &&
2281 !Elts[0]->getType()->isPointerTy())
2282 return Error(FirstEltLoc,
2283 "vector elements must have integer, pointer or floating point type");
2285 // Verify that all the vector elements have the same type.
2286 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2287 if (Elts[i]->getType() != Elts[0]->getType())
2288 return Error(FirstEltLoc,
2289 "vector element #" + Twine(i) +
2290 " is not of type '" + getTypeString(Elts[0]->getType()));
2292 ID.ConstantVal = ConstantVector::get(Elts);
2293 ID.Kind = ValID::t_Constant;
2296 case lltok::lsquare: { // Array Constant
2298 SmallVector<Constant*, 16> Elts;
2299 LocTy FirstEltLoc = Lex.getLoc();
2300 if (ParseGlobalValueVector(Elts) ||
2301 ParseToken(lltok::rsquare, "expected end of array constant"))
2304 // Handle empty element.
2306 // Use undef instead of an array because it's inconvenient to determine
2307 // the element type at this point, there being no elements to examine.
2308 ID.Kind = ValID::t_EmptyArray;
2312 if (!Elts[0]->getType()->isFirstClassType())
2313 return Error(FirstEltLoc, "invalid array element type: " +
2314 getTypeString(Elts[0]->getType()));
2316 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2318 // Verify all elements are correct type!
2319 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2320 if (Elts[i]->getType() != Elts[0]->getType())
2321 return Error(FirstEltLoc,
2322 "array element #" + Twine(i) +
2323 " is not of type '" + getTypeString(Elts[0]->getType()));
2326 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2327 ID.Kind = ValID::t_Constant;
2330 case lltok::kw_c: // c "foo"
2332 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2334 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2335 ID.Kind = ValID::t_Constant;
2338 case lltok::kw_asm: {
2339 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2341 bool HasSideEffect, AlignStack, AsmDialect;
2343 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2344 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2345 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2346 ParseStringConstant(ID.StrVal) ||
2347 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2348 ParseToken(lltok::StringConstant, "expected constraint string"))
2350 ID.StrVal2 = Lex.getStrVal();
2351 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2352 (unsigned(AsmDialect)<<2);
2353 ID.Kind = ValID::t_InlineAsm;
2357 case lltok::kw_blockaddress: {
2358 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2362 LocTy FnLoc, LabelLoc;
2364 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2366 ParseToken(lltok::comma, "expected comma in block address expression")||
2367 ParseValID(Label) ||
2368 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2371 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2372 return Error(Fn.Loc, "expected function name in blockaddress");
2373 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2374 return Error(Label.Loc, "expected basic block name in blockaddress");
2376 // Make a global variable as a placeholder for this reference.
2377 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2378 false, GlobalValue::InternalLinkage,
2380 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2381 ID.ConstantVal = FwdRef;
2382 ID.Kind = ValID::t_Constant;
2386 case lltok::kw_trunc:
2387 case lltok::kw_zext:
2388 case lltok::kw_sext:
2389 case lltok::kw_fptrunc:
2390 case lltok::kw_fpext:
2391 case lltok::kw_bitcast:
2392 case lltok::kw_uitofp:
2393 case lltok::kw_sitofp:
2394 case lltok::kw_fptoui:
2395 case lltok::kw_fptosi:
2396 case lltok::kw_inttoptr:
2397 case lltok::kw_ptrtoint: {
2398 unsigned Opc = Lex.getUIntVal();
2402 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2403 ParseGlobalTypeAndValue(SrcVal) ||
2404 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2405 ParseType(DestTy) ||
2406 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2408 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2409 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2410 getTypeString(SrcVal->getType()) + "' to '" +
2411 getTypeString(DestTy) + "'");
2412 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2414 ID.Kind = ValID::t_Constant;
2417 case lltok::kw_extractvalue: {
2420 SmallVector<unsigned, 4> Indices;
2421 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2422 ParseGlobalTypeAndValue(Val) ||
2423 ParseIndexList(Indices) ||
2424 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2427 if (!Val->getType()->isAggregateType())
2428 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2429 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2430 return Error(ID.Loc, "invalid indices for extractvalue");
2431 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2432 ID.Kind = ValID::t_Constant;
2435 case lltok::kw_insertvalue: {
2437 Constant *Val0, *Val1;
2438 SmallVector<unsigned, 4> Indices;
2439 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2440 ParseGlobalTypeAndValue(Val0) ||
2441 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2442 ParseGlobalTypeAndValue(Val1) ||
2443 ParseIndexList(Indices) ||
2444 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2446 if (!Val0->getType()->isAggregateType())
2447 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2448 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2449 return Error(ID.Loc, "invalid indices for insertvalue");
2450 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2451 ID.Kind = ValID::t_Constant;
2454 case lltok::kw_icmp:
2455 case lltok::kw_fcmp: {
2456 unsigned PredVal, Opc = Lex.getUIntVal();
2457 Constant *Val0, *Val1;
2459 if (ParseCmpPredicate(PredVal, Opc) ||
2460 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2461 ParseGlobalTypeAndValue(Val0) ||
2462 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2463 ParseGlobalTypeAndValue(Val1) ||
2464 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2467 if (Val0->getType() != Val1->getType())
2468 return Error(ID.Loc, "compare operands must have the same type");
2470 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2472 if (Opc == Instruction::FCmp) {
2473 if (!Val0->getType()->isFPOrFPVectorTy())
2474 return Error(ID.Loc, "fcmp requires floating point operands");
2475 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2477 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2478 if (!Val0->getType()->isIntOrIntVectorTy() &&
2479 !Val0->getType()->getScalarType()->isPointerTy())
2480 return Error(ID.Loc, "icmp requires pointer or integer operands");
2481 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2483 ID.Kind = ValID::t_Constant;
2487 // Binary Operators.
2489 case lltok::kw_fadd:
2491 case lltok::kw_fsub:
2493 case lltok::kw_fmul:
2494 case lltok::kw_udiv:
2495 case lltok::kw_sdiv:
2496 case lltok::kw_fdiv:
2497 case lltok::kw_urem:
2498 case lltok::kw_srem:
2499 case lltok::kw_frem:
2501 case lltok::kw_lshr:
2502 case lltok::kw_ashr: {
2506 unsigned Opc = Lex.getUIntVal();
2507 Constant *Val0, *Val1;
2509 LocTy ModifierLoc = Lex.getLoc();
2510 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2511 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2512 if (EatIfPresent(lltok::kw_nuw))
2514 if (EatIfPresent(lltok::kw_nsw)) {
2516 if (EatIfPresent(lltok::kw_nuw))
2519 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2520 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2521 if (EatIfPresent(lltok::kw_exact))
2524 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2525 ParseGlobalTypeAndValue(Val0) ||
2526 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2527 ParseGlobalTypeAndValue(Val1) ||
2528 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2530 if (Val0->getType() != Val1->getType())
2531 return Error(ID.Loc, "operands of constexpr must have same type");
2532 if (!Val0->getType()->isIntOrIntVectorTy()) {
2534 return Error(ModifierLoc, "nuw only applies to integer operations");
2536 return Error(ModifierLoc, "nsw only applies to integer operations");
2538 // Check that the type is valid for the operator.
2540 case Instruction::Add:
2541 case Instruction::Sub:
2542 case Instruction::Mul:
2543 case Instruction::UDiv:
2544 case Instruction::SDiv:
2545 case Instruction::URem:
2546 case Instruction::SRem:
2547 case Instruction::Shl:
2548 case Instruction::AShr:
2549 case Instruction::LShr:
2550 if (!Val0->getType()->isIntOrIntVectorTy())
2551 return Error(ID.Loc, "constexpr requires integer operands");
2553 case Instruction::FAdd:
2554 case Instruction::FSub:
2555 case Instruction::FMul:
2556 case Instruction::FDiv:
2557 case Instruction::FRem:
2558 if (!Val0->getType()->isFPOrFPVectorTy())
2559 return Error(ID.Loc, "constexpr requires fp operands");
2561 default: llvm_unreachable("Unknown binary operator!");
2564 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2565 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2566 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2567 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2569 ID.Kind = ValID::t_Constant;
2573 // Logical Operations
2576 case lltok::kw_xor: {
2577 unsigned Opc = Lex.getUIntVal();
2578 Constant *Val0, *Val1;
2580 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2581 ParseGlobalTypeAndValue(Val0) ||
2582 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2583 ParseGlobalTypeAndValue(Val1) ||
2584 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2586 if (Val0->getType() != Val1->getType())
2587 return Error(ID.Loc, "operands of constexpr must have same type");
2588 if (!Val0->getType()->isIntOrIntVectorTy())
2589 return Error(ID.Loc,
2590 "constexpr requires integer or integer vector operands");
2591 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2592 ID.Kind = ValID::t_Constant;
2596 case lltok::kw_getelementptr:
2597 case lltok::kw_shufflevector:
2598 case lltok::kw_insertelement:
2599 case lltok::kw_extractelement:
2600 case lltok::kw_select: {
2601 unsigned Opc = Lex.getUIntVal();
2602 SmallVector<Constant*, 16> Elts;
2603 bool InBounds = false;
2605 if (Opc == Instruction::GetElementPtr)
2606 InBounds = EatIfPresent(lltok::kw_inbounds);
2607 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2608 ParseGlobalValueVector(Elts) ||
2609 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2612 if (Opc == Instruction::GetElementPtr) {
2613 if (Elts.size() == 0 ||
2614 !Elts[0]->getType()->getScalarType()->isPointerTy())
2615 return Error(ID.Loc, "getelementptr requires pointer operand");
2617 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2618 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2619 return Error(ID.Loc, "invalid indices for getelementptr");
2620 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2622 } else if (Opc == Instruction::Select) {
2623 if (Elts.size() != 3)
2624 return Error(ID.Loc, "expected three operands to select");
2625 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2627 return Error(ID.Loc, Reason);
2628 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2629 } else if (Opc == Instruction::ShuffleVector) {
2630 if (Elts.size() != 3)
2631 return Error(ID.Loc, "expected three operands to shufflevector");
2632 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2633 return Error(ID.Loc, "invalid operands to shufflevector");
2635 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2636 } else if (Opc == Instruction::ExtractElement) {
2637 if (Elts.size() != 2)
2638 return Error(ID.Loc, "expected two operands to extractelement");
2639 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2640 return Error(ID.Loc, "invalid extractelement operands");
2641 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2643 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2644 if (Elts.size() != 3)
2645 return Error(ID.Loc, "expected three operands to insertelement");
2646 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2647 return Error(ID.Loc, "invalid insertelement operands");
2649 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2652 ID.Kind = ValID::t_Constant;
2661 /// ParseGlobalValue - Parse a global value with the specified type.
2662 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2666 bool Parsed = ParseValID(ID) ||
2667 ConvertValIDToValue(Ty, ID, V, NULL);
2668 if (V && !(C = dyn_cast<Constant>(V)))
2669 return Error(ID.Loc, "global values must be constants");
2673 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2675 return ParseType(Ty) ||
2676 ParseGlobalValue(Ty, V);
2679 /// ParseGlobalValueVector
2681 /// ::= TypeAndValue (',' TypeAndValue)*
2682 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2684 if (Lex.getKind() == lltok::rbrace ||
2685 Lex.getKind() == lltok::rsquare ||
2686 Lex.getKind() == lltok::greater ||
2687 Lex.getKind() == lltok::rparen)
2691 if (ParseGlobalTypeAndValue(C)) return true;
2694 while (EatIfPresent(lltok::comma)) {
2695 if (ParseGlobalTypeAndValue(C)) return true;
2702 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2703 assert(Lex.getKind() == lltok::lbrace);
2706 SmallVector<Value*, 16> Elts;
2707 if (ParseMDNodeVector(Elts, PFS) ||
2708 ParseToken(lltok::rbrace, "expected end of metadata node"))
2711 ID.MDNodeVal = MDNode::get(Context, Elts);
2712 ID.Kind = ValID::t_MDNode;
2716 /// ParseMetadataValue
2720 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2721 assert(Lex.getKind() == lltok::exclaim);
2726 if (Lex.getKind() == lltok::lbrace)
2727 return ParseMetadataListValue(ID, PFS);
2729 // Standalone metadata reference
2731 if (Lex.getKind() == lltok::APSInt) {
2732 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2733 ID.Kind = ValID::t_MDNode;
2738 // ::= '!' STRINGCONSTANT
2739 if (ParseMDString(ID.MDStringVal)) return true;
2740 ID.Kind = ValID::t_MDString;
2745 //===----------------------------------------------------------------------===//
2746 // Function Parsing.
2747 //===----------------------------------------------------------------------===//
2749 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2750 PerFunctionState *PFS) {
2751 if (Ty->isFunctionTy())
2752 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2755 case ValID::t_LocalID:
2756 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2757 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2759 case ValID::t_LocalName:
2760 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2761 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2763 case ValID::t_InlineAsm: {
2764 PointerType *PTy = dyn_cast<PointerType>(Ty);
2766 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2767 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2768 return Error(ID.Loc, "invalid type for inline asm constraint string");
2769 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
2770 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
2773 case ValID::t_MDNode:
2774 if (!Ty->isMetadataTy())
2775 return Error(ID.Loc, "metadata value must have metadata type");
2778 case ValID::t_MDString:
2779 if (!Ty->isMetadataTy())
2780 return Error(ID.Loc, "metadata value must have metadata type");
2783 case ValID::t_GlobalName:
2784 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2786 case ValID::t_GlobalID:
2787 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2789 case ValID::t_APSInt:
2790 if (!Ty->isIntegerTy())
2791 return Error(ID.Loc, "integer constant must have integer type");
2792 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2793 V = ConstantInt::get(Context, ID.APSIntVal);
2795 case ValID::t_APFloat:
2796 if (!Ty->isFloatingPointTy() ||
2797 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2798 return Error(ID.Loc, "floating point constant invalid for type");
2800 // The lexer has no type info, so builds all half, float, and double FP
2801 // constants as double. Fix this here. Long double does not need this.
2802 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
2805 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
2807 else if (Ty->isFloatTy())
2808 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2811 V = ConstantFP::get(Context, ID.APFloatVal);
2813 if (V->getType() != Ty)
2814 return Error(ID.Loc, "floating point constant does not have type '" +
2815 getTypeString(Ty) + "'");
2819 if (!Ty->isPointerTy())
2820 return Error(ID.Loc, "null must be a pointer type");
2821 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2823 case ValID::t_Undef:
2824 // FIXME: LabelTy should not be a first-class type.
2825 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2826 return Error(ID.Loc, "invalid type for undef constant");
2827 V = UndefValue::get(Ty);
2829 case ValID::t_EmptyArray:
2830 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2831 return Error(ID.Loc, "invalid empty array initializer");
2832 V = UndefValue::get(Ty);
2835 // FIXME: LabelTy should not be a first-class type.
2836 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2837 return Error(ID.Loc, "invalid type for null constant");
2838 V = Constant::getNullValue(Ty);
2840 case ValID::t_Constant:
2841 if (ID.ConstantVal->getType() != Ty)
2842 return Error(ID.Loc, "constant expression type mismatch");
2846 case ValID::t_ConstantStruct:
2847 case ValID::t_PackedConstantStruct:
2848 if (StructType *ST = dyn_cast<StructType>(Ty)) {
2849 if (ST->getNumElements() != ID.UIntVal)
2850 return Error(ID.Loc,
2851 "initializer with struct type has wrong # elements");
2852 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
2853 return Error(ID.Loc, "packed'ness of initializer and type don't match");
2855 // Verify that the elements are compatible with the structtype.
2856 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
2857 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
2858 return Error(ID.Loc, "element " + Twine(i) +
2859 " of struct initializer doesn't match struct element type");
2861 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
2864 return Error(ID.Loc, "constant expression type mismatch");
2867 llvm_unreachable("Invalid ValID");
2870 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
2873 return ParseValID(ID, PFS) ||
2874 ConvertValIDToValue(Ty, ID, V, PFS);
2877 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
2879 return ParseType(Ty) ||
2880 ParseValue(Ty, V, PFS);
2883 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2884 PerFunctionState &PFS) {
2887 if (ParseTypeAndValue(V, PFS)) return true;
2888 if (!isa<BasicBlock>(V))
2889 return Error(Loc, "expected a basic block");
2890 BB = cast<BasicBlock>(V);
2896 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2897 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2898 /// OptionalAlign OptGC
2899 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2900 // Parse the linkage.
2901 LocTy LinkageLoc = Lex.getLoc();
2904 unsigned Visibility;
2905 AttrBuilder RetAttrs;
2908 LocTy RetTypeLoc = Lex.getLoc();
2909 if (ParseOptionalLinkage(Linkage) ||
2910 ParseOptionalVisibility(Visibility) ||
2911 ParseOptionalCallingConv(CC) ||
2912 ParseOptionalReturnAttrs(RetAttrs) ||
2913 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2916 // Verify that the linkage is ok.
2917 switch ((GlobalValue::LinkageTypes)Linkage) {
2918 case GlobalValue::ExternalLinkage:
2919 break; // always ok.
2920 case GlobalValue::DLLImportLinkage:
2921 case GlobalValue::ExternalWeakLinkage:
2923 return Error(LinkageLoc, "invalid linkage for function definition");
2925 case GlobalValue::PrivateLinkage:
2926 case GlobalValue::LinkerPrivateLinkage:
2927 case GlobalValue::LinkerPrivateWeakLinkage:
2928 case GlobalValue::InternalLinkage:
2929 case GlobalValue::AvailableExternallyLinkage:
2930 case GlobalValue::LinkOnceAnyLinkage:
2931 case GlobalValue::LinkOnceODRLinkage:
2932 case GlobalValue::LinkOnceODRAutoHideLinkage:
2933 case GlobalValue::WeakAnyLinkage:
2934 case GlobalValue::WeakODRLinkage:
2935 case GlobalValue::DLLExportLinkage:
2937 return Error(LinkageLoc, "invalid linkage for function declaration");
2939 case GlobalValue::AppendingLinkage:
2940 case GlobalValue::CommonLinkage:
2941 return Error(LinkageLoc, "invalid function linkage type");
2944 if (!FunctionType::isValidReturnType(RetType))
2945 return Error(RetTypeLoc, "invalid function return type");
2947 LocTy NameLoc = Lex.getLoc();
2949 std::string FunctionName;
2950 if (Lex.getKind() == lltok::GlobalVar) {
2951 FunctionName = Lex.getStrVal();
2952 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2953 unsigned NameID = Lex.getUIntVal();
2955 if (NameID != NumberedVals.size())
2956 return TokError("function expected to be numbered '%" +
2957 Twine(NumberedVals.size()) + "'");
2959 return TokError("expected function name");
2964 if (Lex.getKind() != lltok::lparen)
2965 return TokError("expected '(' in function argument list");
2967 SmallVector<ArgInfo, 8> ArgList;
2969 AttrBuilder FuncAttrs;
2970 std::vector<unsigned> FwdRefAttrGrps;
2972 std::string Section;
2976 LocTy UnnamedAddrLoc;
2978 if (ParseArgumentList(ArgList, isVarArg) ||
2979 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
2981 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
2983 (EatIfPresent(lltok::kw_section) &&
2984 ParseStringConstant(Section)) ||
2985 ParseOptionalAlignment(Alignment) ||
2986 (EatIfPresent(lltok::kw_gc) &&
2987 ParseStringConstant(GC)))
2990 if (FuncAttrs.contains(Attribute::NoBuiltin))
2991 return Error(NoBuiltinLoc, "'nobuiltin' attribute not valid on function");
2993 // If the alignment was parsed as an attribute, move to the alignment field.
2994 if (FuncAttrs.hasAlignmentAttr()) {
2995 Alignment = FuncAttrs.getAlignment();
2996 FuncAttrs.removeAttribute(Attribute::Alignment);
2999 // Okay, if we got here, the function is syntactically valid. Convert types
3000 // and do semantic checks.
3001 std::vector<Type*> ParamTypeList;
3002 SmallVector<AttributeSet, 8> Attrs;
3004 if (RetAttrs.hasAttributes())
3005 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3006 AttributeSet::ReturnIndex,
3009 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3010 ParamTypeList.push_back(ArgList[i].Ty);
3011 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3012 AttrBuilder B(ArgList[i].Attrs, i + 1);
3013 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3017 if (FuncAttrs.hasAttributes())
3018 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3019 AttributeSet::FunctionIndex,
3022 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3024 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
3025 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
3028 FunctionType::get(RetType, ParamTypeList, isVarArg);
3029 PointerType *PFT = PointerType::getUnqual(FT);
3032 if (!FunctionName.empty()) {
3033 // If this was a definition of a forward reference, remove the definition
3034 // from the forward reference table and fill in the forward ref.
3035 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
3036 ForwardRefVals.find(FunctionName);
3037 if (FRVI != ForwardRefVals.end()) {
3038 Fn = M->getFunction(FunctionName);
3040 return Error(FRVI->second.second, "invalid forward reference to "
3041 "function as global value!");
3042 if (Fn->getType() != PFT)
3043 return Error(FRVI->second.second, "invalid forward reference to "
3044 "function '" + FunctionName + "' with wrong type!");
3046 ForwardRefVals.erase(FRVI);
3047 } else if ((Fn = M->getFunction(FunctionName))) {
3048 // Reject redefinitions.
3049 return Error(NameLoc, "invalid redefinition of function '" +
3050 FunctionName + "'");
3051 } else if (M->getNamedValue(FunctionName)) {
3052 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
3056 // If this is a definition of a forward referenced function, make sure the
3058 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
3059 = ForwardRefValIDs.find(NumberedVals.size());
3060 if (I != ForwardRefValIDs.end()) {
3061 Fn = cast<Function>(I->second.first);
3062 if (Fn->getType() != PFT)
3063 return Error(NameLoc, "type of definition and forward reference of '@" +
3064 Twine(NumberedVals.size()) + "' disagree");
3065 ForwardRefValIDs.erase(I);
3070 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
3071 else // Move the forward-reference to the correct spot in the module.
3072 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
3074 if (FunctionName.empty())
3075 NumberedVals.push_back(Fn);
3077 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
3078 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
3079 Fn->setCallingConv(CC);
3080 Fn->setAttributes(PAL);
3081 Fn->setUnnamedAddr(UnnamedAddr);
3082 Fn->setAlignment(Alignment);
3083 Fn->setSection(Section);
3084 if (!GC.empty()) Fn->setGC(GC.c_str());
3085 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
3087 // Add all of the arguments we parsed to the function.
3088 Function::arg_iterator ArgIt = Fn->arg_begin();
3089 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
3090 // If the argument has a name, insert it into the argument symbol table.
3091 if (ArgList[i].Name.empty()) continue;
3093 // Set the name, if it conflicted, it will be auto-renamed.
3094 ArgIt->setName(ArgList[i].Name);
3096 if (ArgIt->getName() != ArgList[i].Name)
3097 return Error(ArgList[i].Loc, "redefinition of argument '%" +
3098 ArgList[i].Name + "'");
3105 /// ParseFunctionBody
3106 /// ::= '{' BasicBlock+ '}'
3108 bool LLParser::ParseFunctionBody(Function &Fn) {
3109 if (Lex.getKind() != lltok::lbrace)
3110 return TokError("expected '{' in function body");
3111 Lex.Lex(); // eat the {.
3113 int FunctionNumber = -1;
3114 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
3116 PerFunctionState PFS(*this, Fn, FunctionNumber);
3118 // We need at least one basic block.
3119 if (Lex.getKind() == lltok::rbrace)
3120 return TokError("function body requires at least one basic block");
3122 while (Lex.getKind() != lltok::rbrace)
3123 if (ParseBasicBlock(PFS)) return true;
3128 // Verify function is ok.
3129 return PFS.FinishFunction();
3133 /// ::= LabelStr? Instruction*
3134 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
3135 // If this basic block starts out with a name, remember it.
3137 LocTy NameLoc = Lex.getLoc();
3138 if (Lex.getKind() == lltok::LabelStr) {
3139 Name = Lex.getStrVal();
3143 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
3144 if (BB == 0) return true;
3146 std::string NameStr;
3148 // Parse the instructions in this block until we get a terminator.
3150 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
3152 // This instruction may have three possibilities for a name: a) none
3153 // specified, b) name specified "%foo =", c) number specified: "%4 =".
3154 LocTy NameLoc = Lex.getLoc();
3158 if (Lex.getKind() == lltok::LocalVarID) {
3159 NameID = Lex.getUIntVal();
3161 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
3163 } else if (Lex.getKind() == lltok::LocalVar) {
3164 NameStr = Lex.getStrVal();
3166 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
3170 switch (ParseInstruction(Inst, BB, PFS)) {
3171 default: llvm_unreachable("Unknown ParseInstruction result!");
3172 case InstError: return true;
3174 BB->getInstList().push_back(Inst);
3176 // With a normal result, we check to see if the instruction is followed by
3177 // a comma and metadata.
3178 if (EatIfPresent(lltok::comma))
3179 if (ParseInstructionMetadata(Inst, &PFS))
3182 case InstExtraComma:
3183 BB->getInstList().push_back(Inst);
3185 // If the instruction parser ate an extra comma at the end of it, it
3186 // *must* be followed by metadata.
3187 if (ParseInstructionMetadata(Inst, &PFS))
3192 // Set the name on the instruction.
3193 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3194 } while (!isa<TerminatorInst>(Inst));
3199 //===----------------------------------------------------------------------===//
3200 // Instruction Parsing.
3201 //===----------------------------------------------------------------------===//
3203 /// ParseInstruction - Parse one of the many different instructions.
3205 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3206 PerFunctionState &PFS) {
3207 lltok::Kind Token = Lex.getKind();
3208 if (Token == lltok::Eof)
3209 return TokError("found end of file when expecting more instructions");
3210 LocTy Loc = Lex.getLoc();
3211 unsigned KeywordVal = Lex.getUIntVal();
3212 Lex.Lex(); // Eat the keyword.
3215 default: return Error(Loc, "expected instruction opcode");
3216 // Terminator Instructions.
3217 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3218 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3219 case lltok::kw_br: return ParseBr(Inst, PFS);
3220 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3221 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3222 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3223 case lltok::kw_resume: return ParseResume(Inst, PFS);
3224 // Binary Operators.
3228 case lltok::kw_shl: {
3229 bool NUW = EatIfPresent(lltok::kw_nuw);
3230 bool NSW = EatIfPresent(lltok::kw_nsw);
3231 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3233 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3235 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3236 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3239 case lltok::kw_fadd:
3240 case lltok::kw_fsub:
3241 case lltok::kw_fmul:
3242 case lltok::kw_fdiv:
3243 case lltok::kw_frem: {
3244 FastMathFlags FMF = EatFastMathFlagsIfPresent();
3245 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
3249 Inst->setFastMathFlags(FMF);
3253 case lltok::kw_sdiv:
3254 case lltok::kw_udiv:
3255 case lltok::kw_lshr:
3256 case lltok::kw_ashr: {
3257 bool Exact = EatIfPresent(lltok::kw_exact);
3259 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3260 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3264 case lltok::kw_urem:
3265 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3268 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3269 case lltok::kw_icmp:
3270 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3272 case lltok::kw_trunc:
3273 case lltok::kw_zext:
3274 case lltok::kw_sext:
3275 case lltok::kw_fptrunc:
3276 case lltok::kw_fpext:
3277 case lltok::kw_bitcast:
3278 case lltok::kw_uitofp:
3279 case lltok::kw_sitofp:
3280 case lltok::kw_fptoui:
3281 case lltok::kw_fptosi:
3282 case lltok::kw_inttoptr:
3283 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3285 case lltok::kw_select: return ParseSelect(Inst, PFS);
3286 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3287 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3288 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3289 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3290 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3291 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3292 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3293 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3295 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3296 case lltok::kw_load: return ParseLoad(Inst, PFS);
3297 case lltok::kw_store: return ParseStore(Inst, PFS);
3298 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3299 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3300 case lltok::kw_fence: return ParseFence(Inst, PFS);
3301 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3302 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3303 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3307 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3308 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3309 if (Opc == Instruction::FCmp) {
3310 switch (Lex.getKind()) {
3311 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
3312 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3313 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3314 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3315 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3316 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3317 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3318 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3319 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3320 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3321 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3322 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3323 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3324 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3325 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3326 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3327 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3330 switch (Lex.getKind()) {
3331 default: return TokError("expected icmp predicate (e.g. 'eq')");
3332 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3333 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3334 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3335 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3336 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3337 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3338 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3339 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3340 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3341 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3348 //===----------------------------------------------------------------------===//
3349 // Terminator Instructions.
3350 //===----------------------------------------------------------------------===//
3352 /// ParseRet - Parse a return instruction.
3353 /// ::= 'ret' void (',' !dbg, !1)*
3354 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3355 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3356 PerFunctionState &PFS) {
3357 SMLoc TypeLoc = Lex.getLoc();
3359 if (ParseType(Ty, true /*void allowed*/)) return true;
3361 Type *ResType = PFS.getFunction().getReturnType();
3363 if (Ty->isVoidTy()) {
3364 if (!ResType->isVoidTy())
3365 return Error(TypeLoc, "value doesn't match function result type '" +
3366 getTypeString(ResType) + "'");
3368 Inst = ReturnInst::Create(Context);
3373 if (ParseValue(Ty, RV, PFS)) return true;
3375 if (ResType != RV->getType())
3376 return Error(TypeLoc, "value doesn't match function result type '" +
3377 getTypeString(ResType) + "'");
3379 Inst = ReturnInst::Create(Context, RV);
3385 /// ::= 'br' TypeAndValue
3386 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3387 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3390 BasicBlock *Op1, *Op2;
3391 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3393 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3394 Inst = BranchInst::Create(BB);
3398 if (Op0->getType() != Type::getInt1Ty(Context))
3399 return Error(Loc, "branch condition must have 'i1' type");
3401 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3402 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3403 ParseToken(lltok::comma, "expected ',' after true destination") ||
3404 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3407 Inst = BranchInst::Create(Op1, Op2, Op0);
3413 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3415 /// ::= (TypeAndValue ',' TypeAndValue)*
3416 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3417 LocTy CondLoc, BBLoc;
3419 BasicBlock *DefaultBB;
3420 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3421 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3422 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3423 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3426 if (!Cond->getType()->isIntegerTy())
3427 return Error(CondLoc, "switch condition must have integer type");
3429 // Parse the jump table pairs.
3430 SmallPtrSet<Value*, 32> SeenCases;
3431 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3432 while (Lex.getKind() != lltok::rsquare) {
3436 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3437 ParseToken(lltok::comma, "expected ',' after case value") ||
3438 ParseTypeAndBasicBlock(DestBB, PFS))
3441 if (!SeenCases.insert(Constant))
3442 return Error(CondLoc, "duplicate case value in switch");
3443 if (!isa<ConstantInt>(Constant))
3444 return Error(CondLoc, "case value is not a constant integer");
3446 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3449 Lex.Lex(); // Eat the ']'.
3451 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3452 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3453 SI->addCase(Table[i].first, Table[i].second);
3460 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3461 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3464 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3465 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3466 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3469 if (!Address->getType()->isPointerTy())
3470 return Error(AddrLoc, "indirectbr address must have pointer type");
3472 // Parse the destination list.
3473 SmallVector<BasicBlock*, 16> DestList;
3475 if (Lex.getKind() != lltok::rsquare) {
3477 if (ParseTypeAndBasicBlock(DestBB, PFS))
3479 DestList.push_back(DestBB);
3481 while (EatIfPresent(lltok::comma)) {
3482 if (ParseTypeAndBasicBlock(DestBB, PFS))
3484 DestList.push_back(DestBB);
3488 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3491 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3492 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3493 IBI->addDestination(DestList[i]);
3500 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3501 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3502 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3503 LocTy CallLoc = Lex.getLoc();
3504 AttrBuilder RetAttrs, FnAttrs;
3505 std::vector<unsigned> FwdRefAttrGrps;
3511 SmallVector<ParamInfo, 16> ArgList;
3513 BasicBlock *NormalBB, *UnwindBB;
3514 if (ParseOptionalCallingConv(CC) ||
3515 ParseOptionalReturnAttrs(RetAttrs) ||
3516 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3517 ParseValID(CalleeID) ||
3518 ParseParameterList(ArgList, PFS) ||
3519 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3521 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3522 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3523 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3524 ParseTypeAndBasicBlock(UnwindBB, PFS))
3527 // If RetType is a non-function pointer type, then this is the short syntax
3528 // for the call, which means that RetType is just the return type. Infer the
3529 // rest of the function argument types from the arguments that are present.
3530 PointerType *PFTy = 0;
3531 FunctionType *Ty = 0;
3532 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3533 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3534 // Pull out the types of all of the arguments...
3535 std::vector<Type*> ParamTypes;
3536 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3537 ParamTypes.push_back(ArgList[i].V->getType());
3539 if (!FunctionType::isValidReturnType(RetType))
3540 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3542 Ty = FunctionType::get(RetType, ParamTypes, false);
3543 PFTy = PointerType::getUnqual(Ty);
3546 // Look up the callee.
3548 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3550 // Set up the Attribute for the function.
3551 SmallVector<AttributeSet, 8> Attrs;
3552 if (RetAttrs.hasAttributes())
3553 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3554 AttributeSet::ReturnIndex,
3557 SmallVector<Value*, 8> Args;
3559 // Loop through FunctionType's arguments and ensure they are specified
3560 // correctly. Also, gather any parameter attributes.
3561 FunctionType::param_iterator I = Ty->param_begin();
3562 FunctionType::param_iterator E = Ty->param_end();
3563 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3564 Type *ExpectedTy = 0;
3567 } else if (!Ty->isVarArg()) {
3568 return Error(ArgList[i].Loc, "too many arguments specified");
3571 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3572 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3573 getTypeString(ExpectedTy) + "'");
3574 Args.push_back(ArgList[i].V);
3575 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3576 AttrBuilder B(ArgList[i].Attrs, i + 1);
3577 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3582 return Error(CallLoc, "not enough parameters specified for call");
3584 if (FnAttrs.hasAttributes())
3585 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3586 AttributeSet::FunctionIndex,
3589 // Finish off the Attribute and check them
3590 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3592 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3593 II->setCallingConv(CC);
3594 II->setAttributes(PAL);
3595 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
3601 /// ::= 'resume' TypeAndValue
3602 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3603 Value *Exn; LocTy ExnLoc;
3604 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3607 ResumeInst *RI = ResumeInst::Create(Exn);
3612 //===----------------------------------------------------------------------===//
3613 // Binary Operators.
3614 //===----------------------------------------------------------------------===//
3617 /// ::= ArithmeticOps TypeAndValue ',' Value
3619 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3620 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3621 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3622 unsigned Opc, unsigned OperandType) {
3623 LocTy Loc; Value *LHS, *RHS;
3624 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3625 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3626 ParseValue(LHS->getType(), RHS, PFS))
3630 switch (OperandType) {
3631 default: llvm_unreachable("Unknown operand type!");
3632 case 0: // int or FP.
3633 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3634 LHS->getType()->isFPOrFPVectorTy();
3636 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3637 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3641 return Error(Loc, "invalid operand type for instruction");
3643 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3648 /// ::= ArithmeticOps TypeAndValue ',' Value {
3649 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3651 LocTy Loc; Value *LHS, *RHS;
3652 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3653 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3654 ParseValue(LHS->getType(), RHS, PFS))
3657 if (!LHS->getType()->isIntOrIntVectorTy())
3658 return Error(Loc,"instruction requires integer or integer vector operands");
3660 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3666 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3667 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3668 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3670 // Parse the integer/fp comparison predicate.
3674 if (ParseCmpPredicate(Pred, Opc) ||
3675 ParseTypeAndValue(LHS, Loc, PFS) ||
3676 ParseToken(lltok::comma, "expected ',' after compare value") ||
3677 ParseValue(LHS->getType(), RHS, PFS))
3680 if (Opc == Instruction::FCmp) {
3681 if (!LHS->getType()->isFPOrFPVectorTy())
3682 return Error(Loc, "fcmp requires floating point operands");
3683 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3685 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3686 if (!LHS->getType()->isIntOrIntVectorTy() &&
3687 !LHS->getType()->getScalarType()->isPointerTy())
3688 return Error(Loc, "icmp requires integer operands");
3689 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3694 //===----------------------------------------------------------------------===//
3695 // Other Instructions.
3696 //===----------------------------------------------------------------------===//
3700 /// ::= CastOpc TypeAndValue 'to' Type
3701 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3706 if (ParseTypeAndValue(Op, Loc, PFS) ||
3707 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3711 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3712 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3713 return Error(Loc, "invalid cast opcode for cast from '" +
3714 getTypeString(Op->getType()) + "' to '" +
3715 getTypeString(DestTy) + "'");
3717 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3722 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3723 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3725 Value *Op0, *Op1, *Op2;
3726 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3727 ParseToken(lltok::comma, "expected ',' after select condition") ||
3728 ParseTypeAndValue(Op1, PFS) ||
3729 ParseToken(lltok::comma, "expected ',' after select value") ||
3730 ParseTypeAndValue(Op2, PFS))
3733 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3734 return Error(Loc, Reason);
3736 Inst = SelectInst::Create(Op0, Op1, Op2);
3741 /// ::= 'va_arg' TypeAndValue ',' Type
3742 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3746 if (ParseTypeAndValue(Op, PFS) ||
3747 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3748 ParseType(EltTy, TypeLoc))
3751 if (!EltTy->isFirstClassType())
3752 return Error(TypeLoc, "va_arg requires operand with first class type");
3754 Inst = new VAArgInst(Op, EltTy);
3758 /// ParseExtractElement
3759 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3760 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3763 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3764 ParseToken(lltok::comma, "expected ',' after extract value") ||
3765 ParseTypeAndValue(Op1, PFS))
3768 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3769 return Error(Loc, "invalid extractelement operands");
3771 Inst = ExtractElementInst::Create(Op0, Op1);
3775 /// ParseInsertElement
3776 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3777 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3779 Value *Op0, *Op1, *Op2;
3780 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3781 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3782 ParseTypeAndValue(Op1, PFS) ||
3783 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3784 ParseTypeAndValue(Op2, PFS))
3787 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3788 return Error(Loc, "invalid insertelement operands");
3790 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3794 /// ParseShuffleVector
3795 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3796 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3798 Value *Op0, *Op1, *Op2;
3799 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3800 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3801 ParseTypeAndValue(Op1, PFS) ||
3802 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3803 ParseTypeAndValue(Op2, PFS))
3806 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3807 return Error(Loc, "invalid shufflevector operands");
3809 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3814 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3815 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3816 Type *Ty = 0; LocTy TypeLoc;
3819 if (ParseType(Ty, TypeLoc) ||
3820 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3821 ParseValue(Ty, Op0, PFS) ||
3822 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3823 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3824 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3827 bool AteExtraComma = false;
3828 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3830 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3832 if (!EatIfPresent(lltok::comma))
3835 if (Lex.getKind() == lltok::MetadataVar) {
3836 AteExtraComma = true;
3840 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3841 ParseValue(Ty, Op0, PFS) ||
3842 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3843 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3844 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3848 if (!Ty->isFirstClassType())
3849 return Error(TypeLoc, "phi node must have first class type");
3851 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
3852 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3853 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3855 return AteExtraComma ? InstExtraComma : InstNormal;
3859 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
3861 /// ::= 'catch' TypeAndValue
3863 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
3864 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
3865 Type *Ty = 0; LocTy TyLoc;
3866 Value *PersFn; LocTy PersFnLoc;
3868 if (ParseType(Ty, TyLoc) ||
3869 ParseToken(lltok::kw_personality, "expected 'personality'") ||
3870 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
3873 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
3874 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
3876 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
3877 LandingPadInst::ClauseType CT;
3878 if (EatIfPresent(lltok::kw_catch))
3879 CT = LandingPadInst::Catch;
3880 else if (EatIfPresent(lltok::kw_filter))
3881 CT = LandingPadInst::Filter;
3883 return TokError("expected 'catch' or 'filter' clause type");
3885 Value *V; LocTy VLoc;
3886 if (ParseTypeAndValue(V, VLoc, PFS)) {
3891 // A 'catch' type expects a non-array constant. A filter clause expects an
3893 if (CT == LandingPadInst::Catch) {
3894 if (isa<ArrayType>(V->getType()))
3895 Error(VLoc, "'catch' clause has an invalid type");
3897 if (!isa<ArrayType>(V->getType()))
3898 Error(VLoc, "'filter' clause has an invalid type");
3909 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3910 /// ParameterList OptionalAttrs
3911 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3913 AttrBuilder RetAttrs, FnAttrs;
3914 std::vector<unsigned> FwdRefAttrGrps;
3920 SmallVector<ParamInfo, 16> ArgList;
3921 LocTy CallLoc = Lex.getLoc();
3923 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3924 ParseOptionalCallingConv(CC) ||
3925 ParseOptionalReturnAttrs(RetAttrs) ||
3926 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3927 ParseValID(CalleeID) ||
3928 ParseParameterList(ArgList, PFS) ||
3929 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3933 // If RetType is a non-function pointer type, then this is the short syntax
3934 // for the call, which means that RetType is just the return type. Infer the
3935 // rest of the function argument types from the arguments that are present.
3936 PointerType *PFTy = 0;
3937 FunctionType *Ty = 0;
3938 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3939 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3940 // Pull out the types of all of the arguments...
3941 std::vector<Type*> ParamTypes;
3942 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3943 ParamTypes.push_back(ArgList[i].V->getType());
3945 if (!FunctionType::isValidReturnType(RetType))
3946 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3948 Ty = FunctionType::get(RetType, ParamTypes, false);
3949 PFTy = PointerType::getUnqual(Ty);
3952 // Look up the callee.
3954 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3956 // Set up the Attribute for the function.
3957 SmallVector<AttributeSet, 8> Attrs;
3958 if (RetAttrs.hasAttributes())
3959 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3960 AttributeSet::ReturnIndex,
3963 SmallVector<Value*, 8> Args;
3965 // Loop through FunctionType's arguments and ensure they are specified
3966 // correctly. Also, gather any parameter attributes.
3967 FunctionType::param_iterator I = Ty->param_begin();
3968 FunctionType::param_iterator E = Ty->param_end();
3969 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3970 Type *ExpectedTy = 0;
3973 } else if (!Ty->isVarArg()) {
3974 return Error(ArgList[i].Loc, "too many arguments specified");
3977 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3978 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3979 getTypeString(ExpectedTy) + "'");
3980 Args.push_back(ArgList[i].V);
3981 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3982 AttrBuilder B(ArgList[i].Attrs, i + 1);
3983 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3988 return Error(CallLoc, "not enough parameters specified for call");
3990 if (FnAttrs.hasAttributes())
3991 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3992 AttributeSet::FunctionIndex,
3995 // Finish off the Attribute and check them
3996 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3998 CallInst *CI = CallInst::Create(Callee, Args);
3999 CI->setTailCall(isTail);
4000 CI->setCallingConv(CC);
4001 CI->setAttributes(PAL);
4002 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
4007 //===----------------------------------------------------------------------===//
4008 // Memory Instructions.
4009 //===----------------------------------------------------------------------===//
4012 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
4013 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
4016 unsigned Alignment = 0;
4018 if (ParseType(Ty)) return true;
4020 bool AteExtraComma = false;
4021 if (EatIfPresent(lltok::comma)) {
4022 if (Lex.getKind() == lltok::kw_align) {
4023 if (ParseOptionalAlignment(Alignment)) return true;
4024 } else if (Lex.getKind() == lltok::MetadataVar) {
4025 AteExtraComma = true;
4027 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
4028 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4033 if (Size && !Size->getType()->isIntegerTy())
4034 return Error(SizeLoc, "element count must have integer type");
4036 Inst = new AllocaInst(Ty, Size, Alignment);
4037 return AteExtraComma ? InstExtraComma : InstNormal;
4041 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
4042 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
4043 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4044 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
4045 Value *Val; LocTy Loc;
4046 unsigned Alignment = 0;
4047 bool AteExtraComma = false;
4048 bool isAtomic = false;
4049 AtomicOrdering Ordering = NotAtomic;
4050 SynchronizationScope Scope = CrossThread;
4052 if (Lex.getKind() == lltok::kw_atomic) {
4057 bool isVolatile = false;
4058 if (Lex.getKind() == lltok::kw_volatile) {
4063 if (ParseTypeAndValue(Val, Loc, PFS) ||
4064 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4065 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4068 if (!Val->getType()->isPointerTy() ||
4069 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
4070 return Error(Loc, "load operand must be a pointer to a first class type");
4071 if (isAtomic && !Alignment)
4072 return Error(Loc, "atomic load must have explicit non-zero alignment");
4073 if (Ordering == Release || Ordering == AcquireRelease)
4074 return Error(Loc, "atomic load cannot use Release ordering");
4076 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
4077 return AteExtraComma ? InstExtraComma : InstNormal;
4082 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
4083 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
4084 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4085 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
4086 Value *Val, *Ptr; LocTy Loc, PtrLoc;
4087 unsigned Alignment = 0;
4088 bool AteExtraComma = false;
4089 bool isAtomic = false;
4090 AtomicOrdering Ordering = NotAtomic;
4091 SynchronizationScope Scope = CrossThread;
4093 if (Lex.getKind() == lltok::kw_atomic) {
4098 bool isVolatile = false;
4099 if (Lex.getKind() == lltok::kw_volatile) {
4104 if (ParseTypeAndValue(Val, Loc, PFS) ||
4105 ParseToken(lltok::comma, "expected ',' after store operand") ||
4106 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4107 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4108 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4111 if (!Ptr->getType()->isPointerTy())
4112 return Error(PtrLoc, "store operand must be a pointer");
4113 if (!Val->getType()->isFirstClassType())
4114 return Error(Loc, "store operand must be a first class value");
4115 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4116 return Error(Loc, "stored value and pointer type do not match");
4117 if (isAtomic && !Alignment)
4118 return Error(Loc, "atomic store must have explicit non-zero alignment");
4119 if (Ordering == Acquire || Ordering == AcquireRelease)
4120 return Error(Loc, "atomic store cannot use Acquire ordering");
4122 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
4123 return AteExtraComma ? InstExtraComma : InstNormal;
4127 /// ::= 'cmpxchg' 'volatile'? TypeAndValue ',' TypeAndValue ',' TypeAndValue
4128 /// 'singlethread'? AtomicOrdering
4129 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
4130 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
4131 bool AteExtraComma = false;
4132 AtomicOrdering Ordering = NotAtomic;
4133 SynchronizationScope Scope = CrossThread;
4134 bool isVolatile = false;
4136 if (EatIfPresent(lltok::kw_volatile))
4139 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4140 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
4141 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
4142 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
4143 ParseTypeAndValue(New, NewLoc, PFS) ||
4144 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4147 if (Ordering == Unordered)
4148 return TokError("cmpxchg cannot be unordered");
4149 if (!Ptr->getType()->isPointerTy())
4150 return Error(PtrLoc, "cmpxchg operand must be a pointer");
4151 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
4152 return Error(CmpLoc, "compare value and pointer type do not match");
4153 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
4154 return Error(NewLoc, "new value and pointer type do not match");
4155 if (!New->getType()->isIntegerTy())
4156 return Error(NewLoc, "cmpxchg operand must be an integer");
4157 unsigned Size = New->getType()->getPrimitiveSizeInBits();
4158 if (Size < 8 || (Size & (Size - 1)))
4159 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
4162 AtomicCmpXchgInst *CXI =
4163 new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, Scope);
4164 CXI->setVolatile(isVolatile);
4166 return AteExtraComma ? InstExtraComma : InstNormal;
4170 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
4171 /// 'singlethread'? AtomicOrdering
4172 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
4173 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
4174 bool AteExtraComma = false;
4175 AtomicOrdering Ordering = NotAtomic;
4176 SynchronizationScope Scope = CrossThread;
4177 bool isVolatile = false;
4178 AtomicRMWInst::BinOp Operation;
4180 if (EatIfPresent(lltok::kw_volatile))
4183 switch (Lex.getKind()) {
4184 default: return TokError("expected binary operation in atomicrmw");
4185 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
4186 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
4187 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
4188 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
4189 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
4190 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
4191 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
4192 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
4193 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
4194 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
4195 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
4197 Lex.Lex(); // Eat the operation.
4199 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4200 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
4201 ParseTypeAndValue(Val, ValLoc, PFS) ||
4202 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4205 if (Ordering == Unordered)
4206 return TokError("atomicrmw cannot be unordered");
4207 if (!Ptr->getType()->isPointerTy())
4208 return Error(PtrLoc, "atomicrmw operand must be a pointer");
4209 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4210 return Error(ValLoc, "atomicrmw value and pointer type do not match");
4211 if (!Val->getType()->isIntegerTy())
4212 return Error(ValLoc, "atomicrmw operand must be an integer");
4213 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
4214 if (Size < 8 || (Size & (Size - 1)))
4215 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
4218 AtomicRMWInst *RMWI =
4219 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
4220 RMWI->setVolatile(isVolatile);
4222 return AteExtraComma ? InstExtraComma : InstNormal;
4226 /// ::= 'fence' 'singlethread'? AtomicOrdering
4227 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
4228 AtomicOrdering Ordering = NotAtomic;
4229 SynchronizationScope Scope = CrossThread;
4230 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4233 if (Ordering == Unordered)
4234 return TokError("fence cannot be unordered");
4235 if (Ordering == Monotonic)
4236 return TokError("fence cannot be monotonic");
4238 Inst = new FenceInst(Context, Ordering, Scope);
4242 /// ParseGetElementPtr
4243 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
4244 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
4249 bool InBounds = EatIfPresent(lltok::kw_inbounds);
4251 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4253 if (!Ptr->getType()->getScalarType()->isPointerTy())
4254 return Error(Loc, "base of getelementptr must be a pointer");
4256 SmallVector<Value*, 16> Indices;
4257 bool AteExtraComma = false;
4258 while (EatIfPresent(lltok::comma)) {
4259 if (Lex.getKind() == lltok::MetadataVar) {
4260 AteExtraComma = true;
4263 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4264 if (!Val->getType()->getScalarType()->isIntegerTy())
4265 return Error(EltLoc, "getelementptr index must be an integer");
4266 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4267 return Error(EltLoc, "getelementptr index type missmatch");
4268 if (Val->getType()->isVectorTy()) {
4269 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4270 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4271 if (ValNumEl != PtrNumEl)
4272 return Error(EltLoc,
4273 "getelementptr vector index has a wrong number of elements");
4275 Indices.push_back(Val);
4278 if (!GetElementPtrInst::getIndexedType(Ptr->getType(), Indices))
4279 return Error(Loc, "invalid getelementptr indices");
4280 Inst = GetElementPtrInst::Create(Ptr, Indices);
4282 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4283 return AteExtraComma ? InstExtraComma : InstNormal;
4286 /// ParseExtractValue
4287 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4288 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4289 Value *Val; LocTy Loc;
4290 SmallVector<unsigned, 4> Indices;
4292 if (ParseTypeAndValue(Val, Loc, PFS) ||
4293 ParseIndexList(Indices, AteExtraComma))
4296 if (!Val->getType()->isAggregateType())
4297 return Error(Loc, "extractvalue operand must be aggregate type");
4299 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4300 return Error(Loc, "invalid indices for extractvalue");
4301 Inst = ExtractValueInst::Create(Val, Indices);
4302 return AteExtraComma ? InstExtraComma : InstNormal;
4305 /// ParseInsertValue
4306 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4307 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4308 Value *Val0, *Val1; LocTy Loc0, Loc1;
4309 SmallVector<unsigned, 4> Indices;
4311 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4312 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4313 ParseTypeAndValue(Val1, Loc1, PFS) ||
4314 ParseIndexList(Indices, AteExtraComma))
4317 if (!Val0->getType()->isAggregateType())
4318 return Error(Loc0, "insertvalue operand must be aggregate type");
4320 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4321 return Error(Loc0, "invalid indices for insertvalue");
4322 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4323 return AteExtraComma ? InstExtraComma : InstNormal;
4326 //===----------------------------------------------------------------------===//
4327 // Embedded metadata.
4328 //===----------------------------------------------------------------------===//
4330 /// ParseMDNodeVector
4331 /// ::= Element (',' Element)*
4333 /// ::= 'null' | TypeAndValue
4334 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4335 PerFunctionState *PFS) {
4336 // Check for an empty list.
4337 if (Lex.getKind() == lltok::rbrace)
4341 // Null is a special case since it is typeless.
4342 if (EatIfPresent(lltok::kw_null)) {
4348 if (ParseTypeAndValue(V, PFS)) return true;
4350 } while (EatIfPresent(lltok::comma));