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;
815 if (ParseToken(lltok::equal, "expected '=' here") ||
816 ParseToken(lltok::lbrace, "expected '{' here") ||
817 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true) ||
818 ParseToken(lltok::rbrace, "expected end of attribute group"))
821 if (!NumberedAttrBuilders[VarID].hasAttributes())
822 return Error(AttrGrpLoc, "attribute group has no attributes");
827 /// ParseFnAttributeValuePairs
828 /// ::= <attr> | <attr> '=' <value>
829 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
830 std::vector<unsigned> &FwdRefAttrGrps,
832 bool HaveError = false;
837 lltok::Kind Token = Lex.getKind();
840 if (!inAttrGrp) return HaveError;
841 return Error(Lex.getLoc(), "unterminated attribute group");
846 case lltok::AttrGrpID: {
847 // Allow a function to reference an attribute group:
849 // define void @foo() #1 { ... }
853 "cannot have an attribute group reference in an attribute group");
855 unsigned AttrGrpNum = Lex.getUIntVal();
856 if (inAttrGrp) break;
858 // Save the reference to the attribute group. We'll fill it in later.
859 FwdRefAttrGrps.push_back(AttrGrpNum);
862 // Target-dependent attributes:
863 case lltok::StringConstant: {
864 std::string Attr = Lex.getStrVal();
867 if (EatIfPresent(lltok::equal) &&
868 ParseStringConstant(Val))
871 B.addAttribute(Attr, Val);
875 // Target-independent attributes:
876 case lltok::kw_align: {
877 // As a hack, we allow "align 2" on functions as a synonym for "alignstack
881 if (ParseToken(lltok::equal, "expected '=' here") ||
882 ParseUInt32(Alignment))
885 if (ParseOptionalAlignment(Alignment))
888 B.addAlignmentAttr(Alignment);
891 case lltok::kw_alignstack: {
894 if (ParseToken(lltok::equal, "expected '=' here") ||
895 ParseUInt32(Alignment))
898 if (ParseOptionalStackAlignment(Alignment))
901 B.addStackAlignmentAttr(Alignment);
904 case lltok::kw_address_safety: B.addAttribute(Attribute::AddressSafety); break;
905 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
906 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
907 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
908 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
909 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
910 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
911 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
912 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
913 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
914 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
915 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
916 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
917 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
918 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
919 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
920 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
921 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
922 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
923 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
926 case lltok::kw_inreg:
927 case lltok::kw_signext:
928 case lltok::kw_zeroext:
931 "invalid use of attribute on a function");
933 case lltok::kw_byval:
935 case lltok::kw_noalias:
936 case lltok::kw_nocapture:
940 "invalid use of parameter-only attribute on a function");
948 //===----------------------------------------------------------------------===//
949 // GlobalValue Reference/Resolution Routines.
950 //===----------------------------------------------------------------------===//
952 /// GetGlobalVal - Get a value with the specified name or ID, creating a
953 /// forward reference record if needed. This can return null if the value
954 /// exists but does not have the right type.
955 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
957 PointerType *PTy = dyn_cast<PointerType>(Ty);
959 Error(Loc, "global variable reference must have pointer type");
963 // Look this name up in the normal function symbol table.
965 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
967 // If this is a forward reference for the value, see if we already created a
968 // forward ref record.
970 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
971 I = ForwardRefVals.find(Name);
972 if (I != ForwardRefVals.end())
973 Val = I->second.first;
976 // If we have the value in the symbol table or fwd-ref table, return it.
978 if (Val->getType() == Ty) return Val;
979 Error(Loc, "'@" + Name + "' defined with type '" +
980 getTypeString(Val->getType()) + "'");
984 // Otherwise, create a new forward reference for this value and remember it.
986 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
987 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
989 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
990 GlobalValue::ExternalWeakLinkage, 0, Name,
991 0, GlobalVariable::NotThreadLocal,
992 PTy->getAddressSpace());
994 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
998 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
999 PointerType *PTy = dyn_cast<PointerType>(Ty);
1001 Error(Loc, "global variable reference must have pointer type");
1005 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1007 // If this is a forward reference for the value, see if we already created a
1008 // forward ref record.
1010 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1011 I = ForwardRefValIDs.find(ID);
1012 if (I != ForwardRefValIDs.end())
1013 Val = I->second.first;
1016 // If we have the value in the symbol table or fwd-ref table, return it.
1018 if (Val->getType() == Ty) return Val;
1019 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1020 getTypeString(Val->getType()) + "'");
1024 // Otherwise, create a new forward reference for this value and remember it.
1025 GlobalValue *FwdVal;
1026 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1027 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1029 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1030 GlobalValue::ExternalWeakLinkage, 0, "");
1032 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1037 //===----------------------------------------------------------------------===//
1039 //===----------------------------------------------------------------------===//
1041 /// ParseToken - If the current token has the specified kind, eat it and return
1042 /// success. Otherwise, emit the specified error and return failure.
1043 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1044 if (Lex.getKind() != T)
1045 return TokError(ErrMsg);
1050 /// ParseStringConstant
1051 /// ::= StringConstant
1052 bool LLParser::ParseStringConstant(std::string &Result) {
1053 if (Lex.getKind() != lltok::StringConstant)
1054 return TokError("expected string constant");
1055 Result = Lex.getStrVal();
1062 bool LLParser::ParseUInt32(unsigned &Val) {
1063 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1064 return TokError("expected integer");
1065 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1066 if (Val64 != unsigned(Val64))
1067 return TokError("expected 32-bit integer (too large)");
1074 /// := 'localdynamic'
1075 /// := 'initialexec'
1077 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1078 switch (Lex.getKind()) {
1080 return TokError("expected localdynamic, initialexec or localexec");
1081 case lltok::kw_localdynamic:
1082 TLM = GlobalVariable::LocalDynamicTLSModel;
1084 case lltok::kw_initialexec:
1085 TLM = GlobalVariable::InitialExecTLSModel;
1087 case lltok::kw_localexec:
1088 TLM = GlobalVariable::LocalExecTLSModel;
1096 /// ParseOptionalThreadLocal
1098 /// := 'thread_local'
1099 /// := 'thread_local' '(' tlsmodel ')'
1100 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1101 TLM = GlobalVariable::NotThreadLocal;
1102 if (!EatIfPresent(lltok::kw_thread_local))
1105 TLM = GlobalVariable::GeneralDynamicTLSModel;
1106 if (Lex.getKind() == lltok::lparen) {
1108 return ParseTLSModel(TLM) ||
1109 ParseToken(lltok::rparen, "expected ')' after thread local model");
1114 /// ParseOptionalAddrSpace
1116 /// := 'addrspace' '(' uint32 ')'
1117 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1119 if (!EatIfPresent(lltok::kw_addrspace))
1121 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1122 ParseUInt32(AddrSpace) ||
1123 ParseToken(lltok::rparen, "expected ')' in address space");
1126 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1127 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1128 bool HaveError = false;
1133 lltok::Kind Token = Lex.getKind();
1135 default: // End of attributes.
1137 case lltok::kw_align: {
1139 if (ParseOptionalAlignment(Alignment))
1141 B.addAlignmentAttr(Alignment);
1144 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1145 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1146 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1147 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1148 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1149 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1150 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1151 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1153 case lltok::kw_noreturn: case lltok::kw_nounwind:
1154 case lltok::kw_uwtable: case lltok::kw_returns_twice:
1155 case lltok::kw_noinline: case lltok::kw_readnone:
1156 case lltok::kw_readonly: case lltok::kw_inlinehint:
1157 case lltok::kw_alwaysinline: case lltok::kw_optsize:
1158 case lltok::kw_ssp: case lltok::kw_sspreq:
1159 case lltok::kw_noredzone: case lltok::kw_noimplicitfloat:
1160 case lltok::kw_naked: case lltok::kw_nonlazybind:
1161 case lltok::kw_address_safety: case lltok::kw_minsize:
1162 case lltok::kw_alignstack:
1163 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1171 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1172 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1173 bool HaveError = false;
1178 lltok::Kind Token = Lex.getKind();
1180 default: // End of attributes.
1182 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1183 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1184 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1185 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1188 case lltok::kw_sret: case lltok::kw_nocapture:
1189 case lltok::kw_byval: case lltok::kw_nest:
1190 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1193 case lltok::kw_noreturn: case lltok::kw_nounwind:
1194 case lltok::kw_uwtable: case lltok::kw_returns_twice:
1195 case lltok::kw_noinline: case lltok::kw_readnone:
1196 case lltok::kw_readonly: case lltok::kw_inlinehint:
1197 case lltok::kw_alwaysinline: case lltok::kw_optsize:
1198 case lltok::kw_ssp: case lltok::kw_sspreq:
1199 case lltok::kw_sspstrong: case lltok::kw_noimplicitfloat:
1200 case lltok::kw_noredzone: case lltok::kw_naked:
1201 case lltok::kw_nonlazybind: case lltok::kw_address_safety:
1202 case lltok::kw_minsize: case lltok::kw_alignstack:
1203 case lltok::kw_align: case lltok::kw_noduplicate:
1204 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1212 /// ParseOptionalLinkage
1215 /// ::= 'linker_private'
1216 /// ::= 'linker_private_weak'
1221 /// ::= 'linkonce_odr'
1222 /// ::= 'linkonce_odr_auto_hide'
1223 /// ::= 'available_externally'
1228 /// ::= 'extern_weak'
1230 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1232 switch (Lex.getKind()) {
1233 default: Res=GlobalValue::ExternalLinkage; return false;
1234 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1235 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1236 case lltok::kw_linker_private_weak:
1237 Res = GlobalValue::LinkerPrivateWeakLinkage;
1239 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1240 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1241 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1242 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1243 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1244 case lltok::kw_linkonce_odr_auto_hide:
1245 case lltok::kw_linker_private_weak_def_auto: // FIXME: For backwards compat.
1246 Res = GlobalValue::LinkOnceODRAutoHideLinkage;
1248 case lltok::kw_available_externally:
1249 Res = GlobalValue::AvailableExternallyLinkage;
1251 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1252 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1253 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1254 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1255 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1256 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1263 /// ParseOptionalVisibility
1269 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1270 switch (Lex.getKind()) {
1271 default: Res = GlobalValue::DefaultVisibility; return false;
1272 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1273 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1274 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1280 /// ParseOptionalCallingConv
1284 /// ::= 'kw_intel_ocl_bicc'
1286 /// ::= 'x86_stdcallcc'
1287 /// ::= 'x86_fastcallcc'
1288 /// ::= 'x86_thiscallcc'
1289 /// ::= 'arm_apcscc'
1290 /// ::= 'arm_aapcscc'
1291 /// ::= 'arm_aapcs_vfpcc'
1292 /// ::= 'msp430_intrcc'
1293 /// ::= 'ptx_kernel'
1294 /// ::= 'ptx_device'
1296 /// ::= 'spir_kernel'
1299 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1300 switch (Lex.getKind()) {
1301 default: CC = CallingConv::C; return false;
1302 case lltok::kw_ccc: CC = CallingConv::C; break;
1303 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1304 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1305 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1306 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1307 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1308 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1309 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1310 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1311 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1312 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1313 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1314 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1315 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1316 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1317 case lltok::kw_cc: {
1318 unsigned ArbitraryCC;
1320 if (ParseUInt32(ArbitraryCC))
1322 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1331 /// ParseInstructionMetadata
1332 /// ::= !dbg !42 (',' !dbg !57)*
1333 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1334 PerFunctionState *PFS) {
1336 if (Lex.getKind() != lltok::MetadataVar)
1337 return TokError("expected metadata after comma");
1339 std::string Name = Lex.getStrVal();
1340 unsigned MDK = M->getMDKindID(Name);
1344 SMLoc Loc = Lex.getLoc();
1346 if (ParseToken(lltok::exclaim, "expected '!' here"))
1349 // This code is similar to that of ParseMetadataValue, however it needs to
1350 // have special-case code for a forward reference; see the comments on
1351 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1352 // at the top level here.
1353 if (Lex.getKind() == lltok::lbrace) {
1355 if (ParseMetadataListValue(ID, PFS))
1357 assert(ID.Kind == ValID::t_MDNode);
1358 Inst->setMetadata(MDK, ID.MDNodeVal);
1360 unsigned NodeID = 0;
1361 if (ParseMDNodeID(Node, NodeID))
1364 // If we got the node, add it to the instruction.
1365 Inst->setMetadata(MDK, Node);
1367 MDRef R = { Loc, MDK, NodeID };
1368 // Otherwise, remember that this should be resolved later.
1369 ForwardRefInstMetadata[Inst].push_back(R);
1373 // If this is the end of the list, we're done.
1374 } while (EatIfPresent(lltok::comma));
1378 /// ParseOptionalAlignment
1381 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1383 if (!EatIfPresent(lltok::kw_align))
1385 LocTy AlignLoc = Lex.getLoc();
1386 if (ParseUInt32(Alignment)) return true;
1387 if (!isPowerOf2_32(Alignment))
1388 return Error(AlignLoc, "alignment is not a power of two");
1389 if (Alignment > Value::MaximumAlignment)
1390 return Error(AlignLoc, "huge alignments are not supported yet");
1394 /// ParseOptionalCommaAlign
1398 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1400 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1401 bool &AteExtraComma) {
1402 AteExtraComma = false;
1403 while (EatIfPresent(lltok::comma)) {
1404 // Metadata at the end is an early exit.
1405 if (Lex.getKind() == lltok::MetadataVar) {
1406 AteExtraComma = true;
1410 if (Lex.getKind() != lltok::kw_align)
1411 return Error(Lex.getLoc(), "expected metadata or 'align'");
1413 if (ParseOptionalAlignment(Alignment)) return true;
1419 /// ParseScopeAndOrdering
1420 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1423 /// This sets Scope and Ordering to the parsed values.
1424 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1425 AtomicOrdering &Ordering) {
1429 Scope = CrossThread;
1430 if (EatIfPresent(lltok::kw_singlethread))
1431 Scope = SingleThread;
1432 switch (Lex.getKind()) {
1433 default: return TokError("Expected ordering on atomic instruction");
1434 case lltok::kw_unordered: Ordering = Unordered; break;
1435 case lltok::kw_monotonic: Ordering = Monotonic; break;
1436 case lltok::kw_acquire: Ordering = Acquire; break;
1437 case lltok::kw_release: Ordering = Release; break;
1438 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1439 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1445 /// ParseOptionalStackAlignment
1447 /// ::= 'alignstack' '(' 4 ')'
1448 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1450 if (!EatIfPresent(lltok::kw_alignstack))
1452 LocTy ParenLoc = Lex.getLoc();
1453 if (!EatIfPresent(lltok::lparen))
1454 return Error(ParenLoc, "expected '('");
1455 LocTy AlignLoc = Lex.getLoc();
1456 if (ParseUInt32(Alignment)) return true;
1457 ParenLoc = Lex.getLoc();
1458 if (!EatIfPresent(lltok::rparen))
1459 return Error(ParenLoc, "expected ')'");
1460 if (!isPowerOf2_32(Alignment))
1461 return Error(AlignLoc, "stack alignment is not a power of two");
1465 /// ParseIndexList - This parses the index list for an insert/extractvalue
1466 /// instruction. This sets AteExtraComma in the case where we eat an extra
1467 /// comma at the end of the line and find that it is followed by metadata.
1468 /// Clients that don't allow metadata can call the version of this function that
1469 /// only takes one argument.
1472 /// ::= (',' uint32)+
1474 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1475 bool &AteExtraComma) {
1476 AteExtraComma = false;
1478 if (Lex.getKind() != lltok::comma)
1479 return TokError("expected ',' as start of index list");
1481 while (EatIfPresent(lltok::comma)) {
1482 if (Lex.getKind() == lltok::MetadataVar) {
1483 AteExtraComma = true;
1487 if (ParseUInt32(Idx)) return true;
1488 Indices.push_back(Idx);
1494 //===----------------------------------------------------------------------===//
1496 //===----------------------------------------------------------------------===//
1498 /// ParseType - Parse a type.
1499 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1500 SMLoc TypeLoc = Lex.getLoc();
1501 switch (Lex.getKind()) {
1503 return TokError("expected type");
1505 // Type ::= 'float' | 'void' (etc)
1506 Result = Lex.getTyVal();
1510 // Type ::= StructType
1511 if (ParseAnonStructType(Result, false))
1514 case lltok::lsquare:
1515 // Type ::= '[' ... ']'
1516 Lex.Lex(); // eat the lsquare.
1517 if (ParseArrayVectorType(Result, false))
1520 case lltok::less: // Either vector or packed struct.
1521 // Type ::= '<' ... '>'
1523 if (Lex.getKind() == lltok::lbrace) {
1524 if (ParseAnonStructType(Result, true) ||
1525 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1527 } else if (ParseArrayVectorType(Result, true))
1530 case lltok::LocalVar: {
1532 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1534 // If the type hasn't been defined yet, create a forward definition and
1535 // remember where that forward def'n was seen (in case it never is defined).
1536 if (Entry.first == 0) {
1537 Entry.first = StructType::create(Context, Lex.getStrVal());
1538 Entry.second = Lex.getLoc();
1540 Result = Entry.first;
1545 case lltok::LocalVarID: {
1547 if (Lex.getUIntVal() >= NumberedTypes.size())
1548 NumberedTypes.resize(Lex.getUIntVal()+1);
1549 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1551 // If the type hasn't been defined yet, create a forward definition and
1552 // remember where that forward def'n was seen (in case it never is defined).
1553 if (Entry.first == 0) {
1554 Entry.first = StructType::create(Context);
1555 Entry.second = Lex.getLoc();
1557 Result = Entry.first;
1563 // Parse the type suffixes.
1565 switch (Lex.getKind()) {
1568 if (!AllowVoid && Result->isVoidTy())
1569 return Error(TypeLoc, "void type only allowed for function results");
1572 // Type ::= Type '*'
1574 if (Result->isLabelTy())
1575 return TokError("basic block pointers are invalid");
1576 if (Result->isVoidTy())
1577 return TokError("pointers to void are invalid - use i8* instead");
1578 if (!PointerType::isValidElementType(Result))
1579 return TokError("pointer to this type is invalid");
1580 Result = PointerType::getUnqual(Result);
1584 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1585 case lltok::kw_addrspace: {
1586 if (Result->isLabelTy())
1587 return TokError("basic block pointers are invalid");
1588 if (Result->isVoidTy())
1589 return TokError("pointers to void are invalid; use i8* instead");
1590 if (!PointerType::isValidElementType(Result))
1591 return TokError("pointer to this type is invalid");
1593 if (ParseOptionalAddrSpace(AddrSpace) ||
1594 ParseToken(lltok::star, "expected '*' in address space"))
1597 Result = PointerType::get(Result, AddrSpace);
1601 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1603 if (ParseFunctionType(Result))
1610 /// ParseParameterList
1612 /// ::= '(' Arg (',' Arg)* ')'
1614 /// ::= Type OptionalAttributes Value OptionalAttributes
1615 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1616 PerFunctionState &PFS) {
1617 if (ParseToken(lltok::lparen, "expected '(' in call"))
1620 unsigned AttrIndex = 1;
1621 while (Lex.getKind() != lltok::rparen) {
1622 // If this isn't the first argument, we need a comma.
1623 if (!ArgList.empty() &&
1624 ParseToken(lltok::comma, "expected ',' in argument list"))
1627 // Parse the argument.
1630 AttrBuilder ArgAttrs;
1632 if (ParseType(ArgTy, ArgLoc))
1635 // Otherwise, handle normal operands.
1636 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1638 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1643 Lex.Lex(); // Lex the ')'.
1649 /// ParseArgumentList - Parse the argument list for a function type or function
1651 /// ::= '(' ArgTypeListI ')'
1655 /// ::= ArgTypeList ',' '...'
1656 /// ::= ArgType (',' ArgType)*
1658 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1661 assert(Lex.getKind() == lltok::lparen);
1662 Lex.Lex(); // eat the (.
1664 if (Lex.getKind() == lltok::rparen) {
1666 } else if (Lex.getKind() == lltok::dotdotdot) {
1670 LocTy TypeLoc = Lex.getLoc();
1675 if (ParseType(ArgTy) ||
1676 ParseOptionalParamAttrs(Attrs)) return true;
1678 if (ArgTy->isVoidTy())
1679 return Error(TypeLoc, "argument can not have void type");
1681 if (Lex.getKind() == lltok::LocalVar) {
1682 Name = Lex.getStrVal();
1686 if (!FunctionType::isValidArgumentType(ArgTy))
1687 return Error(TypeLoc, "invalid type for function argument");
1689 unsigned AttrIndex = 1;
1690 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1691 AttributeSet::get(ArgTy->getContext(),
1692 AttrIndex++, Attrs), Name));
1694 while (EatIfPresent(lltok::comma)) {
1695 // Handle ... at end of arg list.
1696 if (EatIfPresent(lltok::dotdotdot)) {
1701 // Otherwise must be an argument type.
1702 TypeLoc = Lex.getLoc();
1703 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1705 if (ArgTy->isVoidTy())
1706 return Error(TypeLoc, "argument can not have void type");
1708 if (Lex.getKind() == lltok::LocalVar) {
1709 Name = Lex.getStrVal();
1715 if (!ArgTy->isFirstClassType())
1716 return Error(TypeLoc, "invalid type for function argument");
1718 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1719 AttributeSet::get(ArgTy->getContext(),
1720 AttrIndex++, Attrs),
1725 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1728 /// ParseFunctionType
1729 /// ::= Type ArgumentList OptionalAttrs
1730 bool LLParser::ParseFunctionType(Type *&Result) {
1731 assert(Lex.getKind() == lltok::lparen);
1733 if (!FunctionType::isValidReturnType(Result))
1734 return TokError("invalid function return type");
1736 SmallVector<ArgInfo, 8> ArgList;
1738 if (ParseArgumentList(ArgList, isVarArg))
1741 // Reject names on the arguments lists.
1742 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1743 if (!ArgList[i].Name.empty())
1744 return Error(ArgList[i].Loc, "argument name invalid in function type");
1745 if (ArgList[i].Attrs.hasAttributes(i + 1))
1746 return Error(ArgList[i].Loc,
1747 "argument attributes invalid in function type");
1750 SmallVector<Type*, 16> ArgListTy;
1751 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1752 ArgListTy.push_back(ArgList[i].Ty);
1754 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1758 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1760 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1761 SmallVector<Type*, 8> Elts;
1762 if (ParseStructBody(Elts)) return true;
1764 Result = StructType::get(Context, Elts, Packed);
1768 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1769 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1770 std::pair<Type*, LocTy> &Entry,
1772 // If the type was already defined, diagnose the redefinition.
1773 if (Entry.first && !Entry.second.isValid())
1774 return Error(TypeLoc, "redefinition of type");
1776 // If we have opaque, just return without filling in the definition for the
1777 // struct. This counts as a definition as far as the .ll file goes.
1778 if (EatIfPresent(lltok::kw_opaque)) {
1779 // This type is being defined, so clear the location to indicate this.
1780 Entry.second = SMLoc();
1782 // If this type number has never been uttered, create it.
1783 if (Entry.first == 0)
1784 Entry.first = StructType::create(Context, Name);
1785 ResultTy = Entry.first;
1789 // If the type starts with '<', then it is either a packed struct or a vector.
1790 bool isPacked = EatIfPresent(lltok::less);
1792 // If we don't have a struct, then we have a random type alias, which we
1793 // accept for compatibility with old files. These types are not allowed to be
1794 // forward referenced and not allowed to be recursive.
1795 if (Lex.getKind() != lltok::lbrace) {
1797 return Error(TypeLoc, "forward references to non-struct type");
1801 return ParseArrayVectorType(ResultTy, true);
1802 return ParseType(ResultTy);
1805 // This type is being defined, so clear the location to indicate this.
1806 Entry.second = SMLoc();
1808 // If this type number has never been uttered, create it.
1809 if (Entry.first == 0)
1810 Entry.first = StructType::create(Context, Name);
1812 StructType *STy = cast<StructType>(Entry.first);
1814 SmallVector<Type*, 8> Body;
1815 if (ParseStructBody(Body) ||
1816 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
1819 STy->setBody(Body, isPacked);
1825 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1828 /// ::= '{' Type (',' Type)* '}'
1829 /// ::= '<' '{' '}' '>'
1830 /// ::= '<' '{' Type (',' Type)* '}' '>'
1831 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
1832 assert(Lex.getKind() == lltok::lbrace);
1833 Lex.Lex(); // Consume the '{'
1835 // Handle the empty struct.
1836 if (EatIfPresent(lltok::rbrace))
1839 LocTy EltTyLoc = Lex.getLoc();
1841 if (ParseType(Ty)) return true;
1844 if (!StructType::isValidElementType(Ty))
1845 return Error(EltTyLoc, "invalid element type for struct");
1847 while (EatIfPresent(lltok::comma)) {
1848 EltTyLoc = Lex.getLoc();
1849 if (ParseType(Ty)) return true;
1851 if (!StructType::isValidElementType(Ty))
1852 return Error(EltTyLoc, "invalid element type for struct");
1857 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
1860 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1861 /// token has already been consumed.
1863 /// ::= '[' APSINTVAL 'x' Types ']'
1864 /// ::= '<' APSINTVAL 'x' Types '>'
1865 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
1866 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1867 Lex.getAPSIntVal().getBitWidth() > 64)
1868 return TokError("expected number in address space");
1870 LocTy SizeLoc = Lex.getLoc();
1871 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1874 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1877 LocTy TypeLoc = Lex.getLoc();
1879 if (ParseType(EltTy)) return true;
1881 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1882 "expected end of sequential type"))
1887 return Error(SizeLoc, "zero element vector is illegal");
1888 if ((unsigned)Size != Size)
1889 return Error(SizeLoc, "size too large for vector");
1890 if (!VectorType::isValidElementType(EltTy))
1891 return Error(TypeLoc, "invalid vector element type");
1892 Result = VectorType::get(EltTy, unsigned(Size));
1894 if (!ArrayType::isValidElementType(EltTy))
1895 return Error(TypeLoc, "invalid array element type");
1896 Result = ArrayType::get(EltTy, Size);
1901 //===----------------------------------------------------------------------===//
1902 // Function Semantic Analysis.
1903 //===----------------------------------------------------------------------===//
1905 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1907 : P(p), F(f), FunctionNumber(functionNumber) {
1909 // Insert unnamed arguments into the NumberedVals list.
1910 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1913 NumberedVals.push_back(AI);
1916 LLParser::PerFunctionState::~PerFunctionState() {
1917 // If there were any forward referenced non-basicblock values, delete them.
1918 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1919 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1920 if (!isa<BasicBlock>(I->second.first)) {
1921 I->second.first->replaceAllUsesWith(
1922 UndefValue::get(I->second.first->getType()));
1923 delete I->second.first;
1924 I->second.first = 0;
1927 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1928 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1929 if (!isa<BasicBlock>(I->second.first)) {
1930 I->second.first->replaceAllUsesWith(
1931 UndefValue::get(I->second.first->getType()));
1932 delete I->second.first;
1933 I->second.first = 0;
1937 bool LLParser::PerFunctionState::FinishFunction() {
1938 // Check to see if someone took the address of labels in this block.
1939 if (!P.ForwardRefBlockAddresses.empty()) {
1941 if (!F.getName().empty()) {
1942 FunctionID.Kind = ValID::t_GlobalName;
1943 FunctionID.StrVal = F.getName();
1945 FunctionID.Kind = ValID::t_GlobalID;
1946 FunctionID.UIntVal = FunctionNumber;
1949 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
1950 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
1951 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
1952 // Resolve all these references.
1953 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
1956 P.ForwardRefBlockAddresses.erase(FRBAI);
1960 if (!ForwardRefVals.empty())
1961 return P.Error(ForwardRefVals.begin()->second.second,
1962 "use of undefined value '%" + ForwardRefVals.begin()->first +
1964 if (!ForwardRefValIDs.empty())
1965 return P.Error(ForwardRefValIDs.begin()->second.second,
1966 "use of undefined value '%" +
1967 Twine(ForwardRefValIDs.begin()->first) + "'");
1972 /// GetVal - Get a value with the specified name or ID, creating a
1973 /// forward reference record if needed. This can return null if the value
1974 /// exists but does not have the right type.
1975 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1976 Type *Ty, LocTy Loc) {
1977 // Look this name up in the normal function symbol table.
1978 Value *Val = F.getValueSymbolTable().lookup(Name);
1980 // If this is a forward reference for the value, see if we already created a
1981 // forward ref record.
1983 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1984 I = ForwardRefVals.find(Name);
1985 if (I != ForwardRefVals.end())
1986 Val = I->second.first;
1989 // If we have the value in the symbol table or fwd-ref table, return it.
1991 if (Val->getType() == Ty) return Val;
1992 if (Ty->isLabelTy())
1993 P.Error(Loc, "'%" + Name + "' is not a basic block");
1995 P.Error(Loc, "'%" + Name + "' defined with type '" +
1996 getTypeString(Val->getType()) + "'");
2000 // Don't make placeholders with invalid type.
2001 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2002 P.Error(Loc, "invalid use of a non-first-class type");
2006 // Otherwise, create a new forward reference for this value and remember it.
2008 if (Ty->isLabelTy())
2009 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2011 FwdVal = new Argument(Ty, Name);
2013 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2017 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2019 // Look this name up in the normal function symbol table.
2020 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
2022 // If this is a forward reference for the value, see if we already created a
2023 // forward ref record.
2025 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2026 I = ForwardRefValIDs.find(ID);
2027 if (I != ForwardRefValIDs.end())
2028 Val = I->second.first;
2031 // If we have the value in the symbol table or fwd-ref table, return it.
2033 if (Val->getType() == Ty) return Val;
2034 if (Ty->isLabelTy())
2035 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2037 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2038 getTypeString(Val->getType()) + "'");
2042 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2043 P.Error(Loc, "invalid use of a non-first-class type");
2047 // Otherwise, create a new forward reference for this value and remember it.
2049 if (Ty->isLabelTy())
2050 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2052 FwdVal = new Argument(Ty);
2054 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2058 /// SetInstName - After an instruction is parsed and inserted into its
2059 /// basic block, this installs its name.
2060 bool LLParser::PerFunctionState::SetInstName(int NameID,
2061 const std::string &NameStr,
2062 LocTy NameLoc, Instruction *Inst) {
2063 // If this instruction has void type, it cannot have a name or ID specified.
2064 if (Inst->getType()->isVoidTy()) {
2065 if (NameID != -1 || !NameStr.empty())
2066 return P.Error(NameLoc, "instructions returning void cannot have a name");
2070 // If this was a numbered instruction, verify that the instruction is the
2071 // expected value and resolve any forward references.
2072 if (NameStr.empty()) {
2073 // If neither a name nor an ID was specified, just use the next ID.
2075 NameID = NumberedVals.size();
2077 if (unsigned(NameID) != NumberedVals.size())
2078 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2079 Twine(NumberedVals.size()) + "'");
2081 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2082 ForwardRefValIDs.find(NameID);
2083 if (FI != ForwardRefValIDs.end()) {
2084 if (FI->second.first->getType() != Inst->getType())
2085 return P.Error(NameLoc, "instruction forward referenced with type '" +
2086 getTypeString(FI->second.first->getType()) + "'");
2087 FI->second.first->replaceAllUsesWith(Inst);
2088 delete FI->second.first;
2089 ForwardRefValIDs.erase(FI);
2092 NumberedVals.push_back(Inst);
2096 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2097 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2098 FI = ForwardRefVals.find(NameStr);
2099 if (FI != ForwardRefVals.end()) {
2100 if (FI->second.first->getType() != Inst->getType())
2101 return P.Error(NameLoc, "instruction forward referenced with type '" +
2102 getTypeString(FI->second.first->getType()) + "'");
2103 FI->second.first->replaceAllUsesWith(Inst);
2104 delete FI->second.first;
2105 ForwardRefVals.erase(FI);
2108 // Set the name on the instruction.
2109 Inst->setName(NameStr);
2111 if (Inst->getName() != NameStr)
2112 return P.Error(NameLoc, "multiple definition of local value named '" +
2117 /// GetBB - Get a basic block with the specified name or ID, creating a
2118 /// forward reference record if needed.
2119 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2121 return cast_or_null<BasicBlock>(GetVal(Name,
2122 Type::getLabelTy(F.getContext()), Loc));
2125 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2126 return cast_or_null<BasicBlock>(GetVal(ID,
2127 Type::getLabelTy(F.getContext()), Loc));
2130 /// DefineBB - Define the specified basic block, which is either named or
2131 /// unnamed. If there is an error, this returns null otherwise it returns
2132 /// the block being defined.
2133 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2137 BB = GetBB(NumberedVals.size(), Loc);
2139 BB = GetBB(Name, Loc);
2140 if (BB == 0) return 0; // Already diagnosed error.
2142 // Move the block to the end of the function. Forward ref'd blocks are
2143 // inserted wherever they happen to be referenced.
2144 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2146 // Remove the block from forward ref sets.
2148 ForwardRefValIDs.erase(NumberedVals.size());
2149 NumberedVals.push_back(BB);
2151 // BB forward references are already in the function symbol table.
2152 ForwardRefVals.erase(Name);
2158 //===----------------------------------------------------------------------===//
2160 //===----------------------------------------------------------------------===//
2162 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2163 /// type implied. For example, if we parse "4" we don't know what integer type
2164 /// it has. The value will later be combined with its type and checked for
2165 /// sanity. PFS is used to convert function-local operands of metadata (since
2166 /// metadata operands are not just parsed here but also converted to values).
2167 /// PFS can be null when we are not parsing metadata values inside a function.
2168 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2169 ID.Loc = Lex.getLoc();
2170 switch (Lex.getKind()) {
2171 default: return TokError("expected value token");
2172 case lltok::GlobalID: // @42
2173 ID.UIntVal = Lex.getUIntVal();
2174 ID.Kind = ValID::t_GlobalID;
2176 case lltok::GlobalVar: // @foo
2177 ID.StrVal = Lex.getStrVal();
2178 ID.Kind = ValID::t_GlobalName;
2180 case lltok::LocalVarID: // %42
2181 ID.UIntVal = Lex.getUIntVal();
2182 ID.Kind = ValID::t_LocalID;
2184 case lltok::LocalVar: // %foo
2185 ID.StrVal = Lex.getStrVal();
2186 ID.Kind = ValID::t_LocalName;
2188 case lltok::exclaim: // !42, !{...}, or !"foo"
2189 return ParseMetadataValue(ID, PFS);
2191 ID.APSIntVal = Lex.getAPSIntVal();
2192 ID.Kind = ValID::t_APSInt;
2194 case lltok::APFloat:
2195 ID.APFloatVal = Lex.getAPFloatVal();
2196 ID.Kind = ValID::t_APFloat;
2198 case lltok::kw_true:
2199 ID.ConstantVal = ConstantInt::getTrue(Context);
2200 ID.Kind = ValID::t_Constant;
2202 case lltok::kw_false:
2203 ID.ConstantVal = ConstantInt::getFalse(Context);
2204 ID.Kind = ValID::t_Constant;
2206 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2207 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2208 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2210 case lltok::lbrace: {
2211 // ValID ::= '{' ConstVector '}'
2213 SmallVector<Constant*, 16> Elts;
2214 if (ParseGlobalValueVector(Elts) ||
2215 ParseToken(lltok::rbrace, "expected end of struct constant"))
2218 ID.ConstantStructElts = new Constant*[Elts.size()];
2219 ID.UIntVal = Elts.size();
2220 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2221 ID.Kind = ValID::t_ConstantStruct;
2225 // ValID ::= '<' ConstVector '>' --> Vector.
2226 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2228 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2230 SmallVector<Constant*, 16> Elts;
2231 LocTy FirstEltLoc = Lex.getLoc();
2232 if (ParseGlobalValueVector(Elts) ||
2234 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2235 ParseToken(lltok::greater, "expected end of constant"))
2238 if (isPackedStruct) {
2239 ID.ConstantStructElts = new Constant*[Elts.size()];
2240 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2241 ID.UIntVal = Elts.size();
2242 ID.Kind = ValID::t_PackedConstantStruct;
2247 return Error(ID.Loc, "constant vector must not be empty");
2249 if (!Elts[0]->getType()->isIntegerTy() &&
2250 !Elts[0]->getType()->isFloatingPointTy() &&
2251 !Elts[0]->getType()->isPointerTy())
2252 return Error(FirstEltLoc,
2253 "vector elements must have integer, pointer or floating point type");
2255 // Verify that all the vector elements have the same type.
2256 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2257 if (Elts[i]->getType() != Elts[0]->getType())
2258 return Error(FirstEltLoc,
2259 "vector element #" + Twine(i) +
2260 " is not of type '" + getTypeString(Elts[0]->getType()));
2262 ID.ConstantVal = ConstantVector::get(Elts);
2263 ID.Kind = ValID::t_Constant;
2266 case lltok::lsquare: { // Array Constant
2268 SmallVector<Constant*, 16> Elts;
2269 LocTy FirstEltLoc = Lex.getLoc();
2270 if (ParseGlobalValueVector(Elts) ||
2271 ParseToken(lltok::rsquare, "expected end of array constant"))
2274 // Handle empty element.
2276 // Use undef instead of an array because it's inconvenient to determine
2277 // the element type at this point, there being no elements to examine.
2278 ID.Kind = ValID::t_EmptyArray;
2282 if (!Elts[0]->getType()->isFirstClassType())
2283 return Error(FirstEltLoc, "invalid array element type: " +
2284 getTypeString(Elts[0]->getType()));
2286 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2288 // Verify all elements are correct type!
2289 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2290 if (Elts[i]->getType() != Elts[0]->getType())
2291 return Error(FirstEltLoc,
2292 "array element #" + Twine(i) +
2293 " is not of type '" + getTypeString(Elts[0]->getType()));
2296 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2297 ID.Kind = ValID::t_Constant;
2300 case lltok::kw_c: // c "foo"
2302 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2304 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2305 ID.Kind = ValID::t_Constant;
2308 case lltok::kw_asm: {
2309 // ValID ::= 'asm' SideEffect? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
2310 bool HasSideEffect, AlignStack, AsmDialect;
2312 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2313 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2314 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2315 ParseStringConstant(ID.StrVal) ||
2316 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2317 ParseToken(lltok::StringConstant, "expected constraint string"))
2319 ID.StrVal2 = Lex.getStrVal();
2320 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2321 (unsigned(AsmDialect)<<2);
2322 ID.Kind = ValID::t_InlineAsm;
2326 case lltok::kw_blockaddress: {
2327 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2331 LocTy FnLoc, LabelLoc;
2333 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2335 ParseToken(lltok::comma, "expected comma in block address expression")||
2336 ParseValID(Label) ||
2337 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2340 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2341 return Error(Fn.Loc, "expected function name in blockaddress");
2342 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2343 return Error(Label.Loc, "expected basic block name in blockaddress");
2345 // Make a global variable as a placeholder for this reference.
2346 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2347 false, GlobalValue::InternalLinkage,
2349 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2350 ID.ConstantVal = FwdRef;
2351 ID.Kind = ValID::t_Constant;
2355 case lltok::kw_trunc:
2356 case lltok::kw_zext:
2357 case lltok::kw_sext:
2358 case lltok::kw_fptrunc:
2359 case lltok::kw_fpext:
2360 case lltok::kw_bitcast:
2361 case lltok::kw_uitofp:
2362 case lltok::kw_sitofp:
2363 case lltok::kw_fptoui:
2364 case lltok::kw_fptosi:
2365 case lltok::kw_inttoptr:
2366 case lltok::kw_ptrtoint: {
2367 unsigned Opc = Lex.getUIntVal();
2371 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2372 ParseGlobalTypeAndValue(SrcVal) ||
2373 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2374 ParseType(DestTy) ||
2375 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2377 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2378 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2379 getTypeString(SrcVal->getType()) + "' to '" +
2380 getTypeString(DestTy) + "'");
2381 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2383 ID.Kind = ValID::t_Constant;
2386 case lltok::kw_extractvalue: {
2389 SmallVector<unsigned, 4> Indices;
2390 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2391 ParseGlobalTypeAndValue(Val) ||
2392 ParseIndexList(Indices) ||
2393 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2396 if (!Val->getType()->isAggregateType())
2397 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2398 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2399 return Error(ID.Loc, "invalid indices for extractvalue");
2400 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2401 ID.Kind = ValID::t_Constant;
2404 case lltok::kw_insertvalue: {
2406 Constant *Val0, *Val1;
2407 SmallVector<unsigned, 4> Indices;
2408 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2409 ParseGlobalTypeAndValue(Val0) ||
2410 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2411 ParseGlobalTypeAndValue(Val1) ||
2412 ParseIndexList(Indices) ||
2413 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2415 if (!Val0->getType()->isAggregateType())
2416 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2417 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2418 return Error(ID.Loc, "invalid indices for insertvalue");
2419 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2420 ID.Kind = ValID::t_Constant;
2423 case lltok::kw_icmp:
2424 case lltok::kw_fcmp: {
2425 unsigned PredVal, Opc = Lex.getUIntVal();
2426 Constant *Val0, *Val1;
2428 if (ParseCmpPredicate(PredVal, Opc) ||
2429 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2430 ParseGlobalTypeAndValue(Val0) ||
2431 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2432 ParseGlobalTypeAndValue(Val1) ||
2433 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2436 if (Val0->getType() != Val1->getType())
2437 return Error(ID.Loc, "compare operands must have the same type");
2439 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2441 if (Opc == Instruction::FCmp) {
2442 if (!Val0->getType()->isFPOrFPVectorTy())
2443 return Error(ID.Loc, "fcmp requires floating point operands");
2444 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2446 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2447 if (!Val0->getType()->isIntOrIntVectorTy() &&
2448 !Val0->getType()->getScalarType()->isPointerTy())
2449 return Error(ID.Loc, "icmp requires pointer or integer operands");
2450 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2452 ID.Kind = ValID::t_Constant;
2456 // Binary Operators.
2458 case lltok::kw_fadd:
2460 case lltok::kw_fsub:
2462 case lltok::kw_fmul:
2463 case lltok::kw_udiv:
2464 case lltok::kw_sdiv:
2465 case lltok::kw_fdiv:
2466 case lltok::kw_urem:
2467 case lltok::kw_srem:
2468 case lltok::kw_frem:
2470 case lltok::kw_lshr:
2471 case lltok::kw_ashr: {
2475 unsigned Opc = Lex.getUIntVal();
2476 Constant *Val0, *Val1;
2478 LocTy ModifierLoc = Lex.getLoc();
2479 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2480 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2481 if (EatIfPresent(lltok::kw_nuw))
2483 if (EatIfPresent(lltok::kw_nsw)) {
2485 if (EatIfPresent(lltok::kw_nuw))
2488 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2489 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2490 if (EatIfPresent(lltok::kw_exact))
2493 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2494 ParseGlobalTypeAndValue(Val0) ||
2495 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2496 ParseGlobalTypeAndValue(Val1) ||
2497 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2499 if (Val0->getType() != Val1->getType())
2500 return Error(ID.Loc, "operands of constexpr must have same type");
2501 if (!Val0->getType()->isIntOrIntVectorTy()) {
2503 return Error(ModifierLoc, "nuw only applies to integer operations");
2505 return Error(ModifierLoc, "nsw only applies to integer operations");
2507 // Check that the type is valid for the operator.
2509 case Instruction::Add:
2510 case Instruction::Sub:
2511 case Instruction::Mul:
2512 case Instruction::UDiv:
2513 case Instruction::SDiv:
2514 case Instruction::URem:
2515 case Instruction::SRem:
2516 case Instruction::Shl:
2517 case Instruction::AShr:
2518 case Instruction::LShr:
2519 if (!Val0->getType()->isIntOrIntVectorTy())
2520 return Error(ID.Loc, "constexpr requires integer operands");
2522 case Instruction::FAdd:
2523 case Instruction::FSub:
2524 case Instruction::FMul:
2525 case Instruction::FDiv:
2526 case Instruction::FRem:
2527 if (!Val0->getType()->isFPOrFPVectorTy())
2528 return Error(ID.Loc, "constexpr requires fp operands");
2530 default: llvm_unreachable("Unknown binary operator!");
2533 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2534 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2535 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2536 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2538 ID.Kind = ValID::t_Constant;
2542 // Logical Operations
2545 case lltok::kw_xor: {
2546 unsigned Opc = Lex.getUIntVal();
2547 Constant *Val0, *Val1;
2549 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2550 ParseGlobalTypeAndValue(Val0) ||
2551 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2552 ParseGlobalTypeAndValue(Val1) ||
2553 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2555 if (Val0->getType() != Val1->getType())
2556 return Error(ID.Loc, "operands of constexpr must have same type");
2557 if (!Val0->getType()->isIntOrIntVectorTy())
2558 return Error(ID.Loc,
2559 "constexpr requires integer or integer vector operands");
2560 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2561 ID.Kind = ValID::t_Constant;
2565 case lltok::kw_getelementptr:
2566 case lltok::kw_shufflevector:
2567 case lltok::kw_insertelement:
2568 case lltok::kw_extractelement:
2569 case lltok::kw_select: {
2570 unsigned Opc = Lex.getUIntVal();
2571 SmallVector<Constant*, 16> Elts;
2572 bool InBounds = false;
2574 if (Opc == Instruction::GetElementPtr)
2575 InBounds = EatIfPresent(lltok::kw_inbounds);
2576 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2577 ParseGlobalValueVector(Elts) ||
2578 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2581 if (Opc == Instruction::GetElementPtr) {
2582 if (Elts.size() == 0 ||
2583 !Elts[0]->getType()->getScalarType()->isPointerTy())
2584 return Error(ID.Loc, "getelementptr requires pointer operand");
2586 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2587 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2588 return Error(ID.Loc, "invalid indices for getelementptr");
2589 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2591 } else if (Opc == Instruction::Select) {
2592 if (Elts.size() != 3)
2593 return Error(ID.Loc, "expected three operands to select");
2594 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2596 return Error(ID.Loc, Reason);
2597 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2598 } else if (Opc == Instruction::ShuffleVector) {
2599 if (Elts.size() != 3)
2600 return Error(ID.Loc, "expected three operands to shufflevector");
2601 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2602 return Error(ID.Loc, "invalid operands to shufflevector");
2604 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2605 } else if (Opc == Instruction::ExtractElement) {
2606 if (Elts.size() != 2)
2607 return Error(ID.Loc, "expected two operands to extractelement");
2608 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2609 return Error(ID.Loc, "invalid extractelement operands");
2610 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2612 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2613 if (Elts.size() != 3)
2614 return Error(ID.Loc, "expected three operands to insertelement");
2615 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2616 return Error(ID.Loc, "invalid insertelement operands");
2618 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2621 ID.Kind = ValID::t_Constant;
2630 /// ParseGlobalValue - Parse a global value with the specified type.
2631 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2635 bool Parsed = ParseValID(ID) ||
2636 ConvertValIDToValue(Ty, ID, V, NULL);
2637 if (V && !(C = dyn_cast<Constant>(V)))
2638 return Error(ID.Loc, "global values must be constants");
2642 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2644 return ParseType(Ty) ||
2645 ParseGlobalValue(Ty, V);
2648 /// ParseGlobalValueVector
2650 /// ::= TypeAndValue (',' TypeAndValue)*
2651 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2653 if (Lex.getKind() == lltok::rbrace ||
2654 Lex.getKind() == lltok::rsquare ||
2655 Lex.getKind() == lltok::greater ||
2656 Lex.getKind() == lltok::rparen)
2660 if (ParseGlobalTypeAndValue(C)) return true;
2663 while (EatIfPresent(lltok::comma)) {
2664 if (ParseGlobalTypeAndValue(C)) return true;
2671 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2672 assert(Lex.getKind() == lltok::lbrace);
2675 SmallVector<Value*, 16> Elts;
2676 if (ParseMDNodeVector(Elts, PFS) ||
2677 ParseToken(lltok::rbrace, "expected end of metadata node"))
2680 ID.MDNodeVal = MDNode::get(Context, Elts);
2681 ID.Kind = ValID::t_MDNode;
2685 /// ParseMetadataValue
2689 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2690 assert(Lex.getKind() == lltok::exclaim);
2695 if (Lex.getKind() == lltok::lbrace)
2696 return ParseMetadataListValue(ID, PFS);
2698 // Standalone metadata reference
2700 if (Lex.getKind() == lltok::APSInt) {
2701 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2702 ID.Kind = ValID::t_MDNode;
2707 // ::= '!' STRINGCONSTANT
2708 if (ParseMDString(ID.MDStringVal)) return true;
2709 ID.Kind = ValID::t_MDString;
2714 //===----------------------------------------------------------------------===//
2715 // Function Parsing.
2716 //===----------------------------------------------------------------------===//
2718 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2719 PerFunctionState *PFS) {
2720 if (Ty->isFunctionTy())
2721 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2724 case ValID::t_LocalID:
2725 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2726 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2728 case ValID::t_LocalName:
2729 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2730 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2732 case ValID::t_InlineAsm: {
2733 PointerType *PTy = dyn_cast<PointerType>(Ty);
2735 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2736 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2737 return Error(ID.Loc, "invalid type for inline asm constraint string");
2738 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
2739 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
2742 case ValID::t_MDNode:
2743 if (!Ty->isMetadataTy())
2744 return Error(ID.Loc, "metadata value must have metadata type");
2747 case ValID::t_MDString:
2748 if (!Ty->isMetadataTy())
2749 return Error(ID.Loc, "metadata value must have metadata type");
2752 case ValID::t_GlobalName:
2753 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2755 case ValID::t_GlobalID:
2756 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2758 case ValID::t_APSInt:
2759 if (!Ty->isIntegerTy())
2760 return Error(ID.Loc, "integer constant must have integer type");
2761 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2762 V = ConstantInt::get(Context, ID.APSIntVal);
2764 case ValID::t_APFloat:
2765 if (!Ty->isFloatingPointTy() ||
2766 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2767 return Error(ID.Loc, "floating point constant invalid for type");
2769 // The lexer has no type info, so builds all half, float, and double FP
2770 // constants as double. Fix this here. Long double does not need this.
2771 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
2774 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
2776 else if (Ty->isFloatTy())
2777 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2780 V = ConstantFP::get(Context, ID.APFloatVal);
2782 if (V->getType() != Ty)
2783 return Error(ID.Loc, "floating point constant does not have type '" +
2784 getTypeString(Ty) + "'");
2788 if (!Ty->isPointerTy())
2789 return Error(ID.Loc, "null must be a pointer type");
2790 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2792 case ValID::t_Undef:
2793 // FIXME: LabelTy should not be a first-class type.
2794 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2795 return Error(ID.Loc, "invalid type for undef constant");
2796 V = UndefValue::get(Ty);
2798 case ValID::t_EmptyArray:
2799 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2800 return Error(ID.Loc, "invalid empty array initializer");
2801 V = UndefValue::get(Ty);
2804 // FIXME: LabelTy should not be a first-class type.
2805 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2806 return Error(ID.Loc, "invalid type for null constant");
2807 V = Constant::getNullValue(Ty);
2809 case ValID::t_Constant:
2810 if (ID.ConstantVal->getType() != Ty)
2811 return Error(ID.Loc, "constant expression type mismatch");
2815 case ValID::t_ConstantStruct:
2816 case ValID::t_PackedConstantStruct:
2817 if (StructType *ST = dyn_cast<StructType>(Ty)) {
2818 if (ST->getNumElements() != ID.UIntVal)
2819 return Error(ID.Loc,
2820 "initializer with struct type has wrong # elements");
2821 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
2822 return Error(ID.Loc, "packed'ness of initializer and type don't match");
2824 // Verify that the elements are compatible with the structtype.
2825 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
2826 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
2827 return Error(ID.Loc, "element " + Twine(i) +
2828 " of struct initializer doesn't match struct element type");
2830 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
2833 return Error(ID.Loc, "constant expression type mismatch");
2836 llvm_unreachable("Invalid ValID");
2839 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
2842 return ParseValID(ID, PFS) ||
2843 ConvertValIDToValue(Ty, ID, V, PFS);
2846 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
2848 return ParseType(Ty) ||
2849 ParseValue(Ty, V, PFS);
2852 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2853 PerFunctionState &PFS) {
2856 if (ParseTypeAndValue(V, PFS)) return true;
2857 if (!isa<BasicBlock>(V))
2858 return Error(Loc, "expected a basic block");
2859 BB = cast<BasicBlock>(V);
2865 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2866 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2867 /// OptionalAlign OptGC
2868 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2869 // Parse the linkage.
2870 LocTy LinkageLoc = Lex.getLoc();
2873 unsigned Visibility;
2874 AttrBuilder RetAttrs;
2877 LocTy RetTypeLoc = Lex.getLoc();
2878 if (ParseOptionalLinkage(Linkage) ||
2879 ParseOptionalVisibility(Visibility) ||
2880 ParseOptionalCallingConv(CC) ||
2881 ParseOptionalReturnAttrs(RetAttrs) ||
2882 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2885 // Verify that the linkage is ok.
2886 switch ((GlobalValue::LinkageTypes)Linkage) {
2887 case GlobalValue::ExternalLinkage:
2888 break; // always ok.
2889 case GlobalValue::DLLImportLinkage:
2890 case GlobalValue::ExternalWeakLinkage:
2892 return Error(LinkageLoc, "invalid linkage for function definition");
2894 case GlobalValue::PrivateLinkage:
2895 case GlobalValue::LinkerPrivateLinkage:
2896 case GlobalValue::LinkerPrivateWeakLinkage:
2897 case GlobalValue::InternalLinkage:
2898 case GlobalValue::AvailableExternallyLinkage:
2899 case GlobalValue::LinkOnceAnyLinkage:
2900 case GlobalValue::LinkOnceODRLinkage:
2901 case GlobalValue::LinkOnceODRAutoHideLinkage:
2902 case GlobalValue::WeakAnyLinkage:
2903 case GlobalValue::WeakODRLinkage:
2904 case GlobalValue::DLLExportLinkage:
2906 return Error(LinkageLoc, "invalid linkage for function declaration");
2908 case GlobalValue::AppendingLinkage:
2909 case GlobalValue::CommonLinkage:
2910 return Error(LinkageLoc, "invalid function linkage type");
2913 if (!FunctionType::isValidReturnType(RetType))
2914 return Error(RetTypeLoc, "invalid function return type");
2916 LocTy NameLoc = Lex.getLoc();
2918 std::string FunctionName;
2919 if (Lex.getKind() == lltok::GlobalVar) {
2920 FunctionName = Lex.getStrVal();
2921 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2922 unsigned NameID = Lex.getUIntVal();
2924 if (NameID != NumberedVals.size())
2925 return TokError("function expected to be numbered '%" +
2926 Twine(NumberedVals.size()) + "'");
2928 return TokError("expected function name");
2933 if (Lex.getKind() != lltok::lparen)
2934 return TokError("expected '(' in function argument list");
2936 SmallVector<ArgInfo, 8> ArgList;
2938 AttrBuilder FuncAttrs;
2939 std::vector<unsigned> FwdRefAttrGrps;
2940 std::string Section;
2944 LocTy UnnamedAddrLoc;
2946 if (ParseArgumentList(ArgList, isVarArg) ||
2947 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
2949 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false) ||
2950 (EatIfPresent(lltok::kw_section) &&
2951 ParseStringConstant(Section)) ||
2952 ParseOptionalAlignment(Alignment) ||
2953 (EatIfPresent(lltok::kw_gc) &&
2954 ParseStringConstant(GC)))
2957 // If the alignment was parsed as an attribute, move to the alignment field.
2958 if (FuncAttrs.hasAlignmentAttr()) {
2959 Alignment = FuncAttrs.getAlignment();
2960 FuncAttrs.removeAttribute(Attribute::Alignment);
2963 // Okay, if we got here, the function is syntactically valid. Convert types
2964 // and do semantic checks.
2965 std::vector<Type*> ParamTypeList;
2966 SmallVector<AttributeSet, 8> Attrs;
2968 if (RetAttrs.hasAttributes())
2969 Attrs.push_back(AttributeSet::get(RetType->getContext(),
2970 AttributeSet::ReturnIndex,
2973 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2974 ParamTypeList.push_back(ArgList[i].Ty);
2975 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
2976 AttrBuilder B(ArgList[i].Attrs, i + 1);
2977 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
2981 if (FuncAttrs.hasAttributes())
2982 Attrs.push_back(AttributeSet::get(RetType->getContext(),
2983 AttributeSet::FunctionIndex,
2986 AttributeSet PAL = AttributeSet::get(Context, Attrs);
2988 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
2989 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2992 FunctionType::get(RetType, ParamTypeList, isVarArg);
2993 PointerType *PFT = PointerType::getUnqual(FT);
2996 if (!FunctionName.empty()) {
2997 // If this was a definition of a forward reference, remove the definition
2998 // from the forward reference table and fill in the forward ref.
2999 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
3000 ForwardRefVals.find(FunctionName);
3001 if (FRVI != ForwardRefVals.end()) {
3002 Fn = M->getFunction(FunctionName);
3004 return Error(FRVI->second.second, "invalid forward reference to "
3005 "function as global value!");
3006 if (Fn->getType() != PFT)
3007 return Error(FRVI->second.second, "invalid forward reference to "
3008 "function '" + FunctionName + "' with wrong type!");
3010 ForwardRefVals.erase(FRVI);
3011 } else if ((Fn = M->getFunction(FunctionName))) {
3012 // Reject redefinitions.
3013 return Error(NameLoc, "invalid redefinition of function '" +
3014 FunctionName + "'");
3015 } else if (M->getNamedValue(FunctionName)) {
3016 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
3020 // If this is a definition of a forward referenced function, make sure the
3022 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
3023 = ForwardRefValIDs.find(NumberedVals.size());
3024 if (I != ForwardRefValIDs.end()) {
3025 Fn = cast<Function>(I->second.first);
3026 if (Fn->getType() != PFT)
3027 return Error(NameLoc, "type of definition and forward reference of '@" +
3028 Twine(NumberedVals.size()) + "' disagree");
3029 ForwardRefValIDs.erase(I);
3034 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
3035 else // Move the forward-reference to the correct spot in the module.
3036 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
3038 if (FunctionName.empty())
3039 NumberedVals.push_back(Fn);
3041 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
3042 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
3043 Fn->setCallingConv(CC);
3044 Fn->setAttributes(PAL);
3045 Fn->setUnnamedAddr(UnnamedAddr);
3046 Fn->setAlignment(Alignment);
3047 Fn->setSection(Section);
3048 if (!GC.empty()) Fn->setGC(GC.c_str());
3049 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
3051 // Add all of the arguments we parsed to the function.
3052 Function::arg_iterator ArgIt = Fn->arg_begin();
3053 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
3054 // If the argument has a name, insert it into the argument symbol table.
3055 if (ArgList[i].Name.empty()) continue;
3057 // Set the name, if it conflicted, it will be auto-renamed.
3058 ArgIt->setName(ArgList[i].Name);
3060 if (ArgIt->getName() != ArgList[i].Name)
3061 return Error(ArgList[i].Loc, "redefinition of argument '%" +
3062 ArgList[i].Name + "'");
3069 /// ParseFunctionBody
3070 /// ::= '{' BasicBlock+ '}'
3072 bool LLParser::ParseFunctionBody(Function &Fn) {
3073 if (Lex.getKind() != lltok::lbrace)
3074 return TokError("expected '{' in function body");
3075 Lex.Lex(); // eat the {.
3077 int FunctionNumber = -1;
3078 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
3080 PerFunctionState PFS(*this, Fn, FunctionNumber);
3082 // We need at least one basic block.
3083 if (Lex.getKind() == lltok::rbrace)
3084 return TokError("function body requires at least one basic block");
3086 while (Lex.getKind() != lltok::rbrace)
3087 if (ParseBasicBlock(PFS)) return true;
3092 // Verify function is ok.
3093 return PFS.FinishFunction();
3097 /// ::= LabelStr? Instruction*
3098 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
3099 // If this basic block starts out with a name, remember it.
3101 LocTy NameLoc = Lex.getLoc();
3102 if (Lex.getKind() == lltok::LabelStr) {
3103 Name = Lex.getStrVal();
3107 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
3108 if (BB == 0) return true;
3110 std::string NameStr;
3112 // Parse the instructions in this block until we get a terminator.
3114 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
3116 // This instruction may have three possibilities for a name: a) none
3117 // specified, b) name specified "%foo =", c) number specified: "%4 =".
3118 LocTy NameLoc = Lex.getLoc();
3122 if (Lex.getKind() == lltok::LocalVarID) {
3123 NameID = Lex.getUIntVal();
3125 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
3127 } else if (Lex.getKind() == lltok::LocalVar) {
3128 NameStr = Lex.getStrVal();
3130 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
3134 switch (ParseInstruction(Inst, BB, PFS)) {
3135 default: llvm_unreachable("Unknown ParseInstruction result!");
3136 case InstError: return true;
3138 BB->getInstList().push_back(Inst);
3140 // With a normal result, we check to see if the instruction is followed by
3141 // a comma and metadata.
3142 if (EatIfPresent(lltok::comma))
3143 if (ParseInstructionMetadata(Inst, &PFS))
3146 case InstExtraComma:
3147 BB->getInstList().push_back(Inst);
3149 // If the instruction parser ate an extra comma at the end of it, it
3150 // *must* be followed by metadata.
3151 if (ParseInstructionMetadata(Inst, &PFS))
3156 // Set the name on the instruction.
3157 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3158 } while (!isa<TerminatorInst>(Inst));
3163 //===----------------------------------------------------------------------===//
3164 // Instruction Parsing.
3165 //===----------------------------------------------------------------------===//
3167 /// ParseInstruction - Parse one of the many different instructions.
3169 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3170 PerFunctionState &PFS) {
3171 lltok::Kind Token = Lex.getKind();
3172 if (Token == lltok::Eof)
3173 return TokError("found end of file when expecting more instructions");
3174 LocTy Loc = Lex.getLoc();
3175 unsigned KeywordVal = Lex.getUIntVal();
3176 Lex.Lex(); // Eat the keyword.
3179 default: return Error(Loc, "expected instruction opcode");
3180 // Terminator Instructions.
3181 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3182 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3183 case lltok::kw_br: return ParseBr(Inst, PFS);
3184 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3185 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3186 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3187 case lltok::kw_resume: return ParseResume(Inst, PFS);
3188 // Binary Operators.
3192 case lltok::kw_shl: {
3193 bool NUW = EatIfPresent(lltok::kw_nuw);
3194 bool NSW = EatIfPresent(lltok::kw_nsw);
3195 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3197 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3199 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3200 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3203 case lltok::kw_fadd:
3204 case lltok::kw_fsub:
3205 case lltok::kw_fmul:
3206 case lltok::kw_fdiv:
3207 case lltok::kw_frem: {
3208 FastMathFlags FMF = EatFastMathFlagsIfPresent();
3209 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
3213 Inst->setFastMathFlags(FMF);
3217 case lltok::kw_sdiv:
3218 case lltok::kw_udiv:
3219 case lltok::kw_lshr:
3220 case lltok::kw_ashr: {
3221 bool Exact = EatIfPresent(lltok::kw_exact);
3223 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3224 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3228 case lltok::kw_urem:
3229 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3232 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3233 case lltok::kw_icmp:
3234 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3236 case lltok::kw_trunc:
3237 case lltok::kw_zext:
3238 case lltok::kw_sext:
3239 case lltok::kw_fptrunc:
3240 case lltok::kw_fpext:
3241 case lltok::kw_bitcast:
3242 case lltok::kw_uitofp:
3243 case lltok::kw_sitofp:
3244 case lltok::kw_fptoui:
3245 case lltok::kw_fptosi:
3246 case lltok::kw_inttoptr:
3247 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3249 case lltok::kw_select: return ParseSelect(Inst, PFS);
3250 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3251 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3252 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3253 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3254 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3255 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3256 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3257 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3259 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3260 case lltok::kw_load: return ParseLoad(Inst, PFS);
3261 case lltok::kw_store: return ParseStore(Inst, PFS);
3262 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3263 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3264 case lltok::kw_fence: return ParseFence(Inst, PFS);
3265 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3266 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3267 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3271 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3272 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3273 if (Opc == Instruction::FCmp) {
3274 switch (Lex.getKind()) {
3275 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
3276 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3277 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3278 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3279 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3280 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3281 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3282 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3283 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3284 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3285 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3286 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3287 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3288 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3289 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3290 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3291 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3294 switch (Lex.getKind()) {
3295 default: return TokError("expected icmp predicate (e.g. 'eq')");
3296 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3297 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3298 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3299 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3300 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3301 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3302 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3303 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3304 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3305 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3312 //===----------------------------------------------------------------------===//
3313 // Terminator Instructions.
3314 //===----------------------------------------------------------------------===//
3316 /// ParseRet - Parse a return instruction.
3317 /// ::= 'ret' void (',' !dbg, !1)*
3318 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3319 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3320 PerFunctionState &PFS) {
3321 SMLoc TypeLoc = Lex.getLoc();
3323 if (ParseType(Ty, true /*void allowed*/)) return true;
3325 Type *ResType = PFS.getFunction().getReturnType();
3327 if (Ty->isVoidTy()) {
3328 if (!ResType->isVoidTy())
3329 return Error(TypeLoc, "value doesn't match function result type '" +
3330 getTypeString(ResType) + "'");
3332 Inst = ReturnInst::Create(Context);
3337 if (ParseValue(Ty, RV, PFS)) return true;
3339 if (ResType != RV->getType())
3340 return Error(TypeLoc, "value doesn't match function result type '" +
3341 getTypeString(ResType) + "'");
3343 Inst = ReturnInst::Create(Context, RV);
3349 /// ::= 'br' TypeAndValue
3350 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3351 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3354 BasicBlock *Op1, *Op2;
3355 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3357 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3358 Inst = BranchInst::Create(BB);
3362 if (Op0->getType() != Type::getInt1Ty(Context))
3363 return Error(Loc, "branch condition must have 'i1' type");
3365 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3366 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3367 ParseToken(lltok::comma, "expected ',' after true destination") ||
3368 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3371 Inst = BranchInst::Create(Op1, Op2, Op0);
3377 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3379 /// ::= (TypeAndValue ',' TypeAndValue)*
3380 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3381 LocTy CondLoc, BBLoc;
3383 BasicBlock *DefaultBB;
3384 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3385 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3386 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3387 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3390 if (!Cond->getType()->isIntegerTy())
3391 return Error(CondLoc, "switch condition must have integer type");
3393 // Parse the jump table pairs.
3394 SmallPtrSet<Value*, 32> SeenCases;
3395 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3396 while (Lex.getKind() != lltok::rsquare) {
3400 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3401 ParseToken(lltok::comma, "expected ',' after case value") ||
3402 ParseTypeAndBasicBlock(DestBB, PFS))
3405 if (!SeenCases.insert(Constant))
3406 return Error(CondLoc, "duplicate case value in switch");
3407 if (!isa<ConstantInt>(Constant))
3408 return Error(CondLoc, "case value is not a constant integer");
3410 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3413 Lex.Lex(); // Eat the ']'.
3415 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3416 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3417 SI->addCase(Table[i].first, Table[i].second);
3424 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3425 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3428 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3429 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3430 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3433 if (!Address->getType()->isPointerTy())
3434 return Error(AddrLoc, "indirectbr address must have pointer type");
3436 // Parse the destination list.
3437 SmallVector<BasicBlock*, 16> DestList;
3439 if (Lex.getKind() != lltok::rsquare) {
3441 if (ParseTypeAndBasicBlock(DestBB, PFS))
3443 DestList.push_back(DestBB);
3445 while (EatIfPresent(lltok::comma)) {
3446 if (ParseTypeAndBasicBlock(DestBB, PFS))
3448 DestList.push_back(DestBB);
3452 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3455 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3456 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3457 IBI->addDestination(DestList[i]);
3464 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3465 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3466 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3467 LocTy CallLoc = Lex.getLoc();
3468 AttrBuilder RetAttrs, FnAttrs;
3469 std::vector<unsigned> FwdRefAttrGrps;
3474 SmallVector<ParamInfo, 16> ArgList;
3476 BasicBlock *NormalBB, *UnwindBB;
3477 if (ParseOptionalCallingConv(CC) ||
3478 ParseOptionalReturnAttrs(RetAttrs) ||
3479 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3480 ParseValID(CalleeID) ||
3481 ParseParameterList(ArgList, PFS) ||
3482 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false) ||
3483 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3484 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3485 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3486 ParseTypeAndBasicBlock(UnwindBB, PFS))
3489 // If RetType is a non-function pointer type, then this is the short syntax
3490 // for the call, which means that RetType is just the return type. Infer the
3491 // rest of the function argument types from the arguments that are present.
3492 PointerType *PFTy = 0;
3493 FunctionType *Ty = 0;
3494 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3495 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3496 // Pull out the types of all of the arguments...
3497 std::vector<Type*> ParamTypes;
3498 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3499 ParamTypes.push_back(ArgList[i].V->getType());
3501 if (!FunctionType::isValidReturnType(RetType))
3502 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3504 Ty = FunctionType::get(RetType, ParamTypes, false);
3505 PFTy = PointerType::getUnqual(Ty);
3508 // Look up the callee.
3510 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3512 // Set up the Attribute for the function.
3513 SmallVector<AttributeSet, 8> Attrs;
3514 if (RetAttrs.hasAttributes())
3515 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3516 AttributeSet::ReturnIndex,
3519 SmallVector<Value*, 8> Args;
3521 // Loop through FunctionType's arguments and ensure they are specified
3522 // correctly. Also, gather any parameter attributes.
3523 FunctionType::param_iterator I = Ty->param_begin();
3524 FunctionType::param_iterator E = Ty->param_end();
3525 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3526 Type *ExpectedTy = 0;
3529 } else if (!Ty->isVarArg()) {
3530 return Error(ArgList[i].Loc, "too many arguments specified");
3533 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3534 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3535 getTypeString(ExpectedTy) + "'");
3536 Args.push_back(ArgList[i].V);
3537 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3538 AttrBuilder B(ArgList[i].Attrs, i + 1);
3539 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3544 return Error(CallLoc, "not enough parameters specified for call");
3546 if (FnAttrs.hasAttributes())
3547 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3548 AttributeSet::FunctionIndex,
3551 // Finish off the Attribute and check them
3552 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3554 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3555 II->setCallingConv(CC);
3556 II->setAttributes(PAL);
3557 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
3563 /// ::= 'resume' TypeAndValue
3564 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3565 Value *Exn; LocTy ExnLoc;
3566 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3569 ResumeInst *RI = ResumeInst::Create(Exn);
3574 //===----------------------------------------------------------------------===//
3575 // Binary Operators.
3576 //===----------------------------------------------------------------------===//
3579 /// ::= ArithmeticOps TypeAndValue ',' Value
3581 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3582 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3583 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3584 unsigned Opc, unsigned OperandType) {
3585 LocTy Loc; Value *LHS, *RHS;
3586 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3587 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3588 ParseValue(LHS->getType(), RHS, PFS))
3592 switch (OperandType) {
3593 default: llvm_unreachable("Unknown operand type!");
3594 case 0: // int or FP.
3595 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3596 LHS->getType()->isFPOrFPVectorTy();
3598 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3599 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3603 return Error(Loc, "invalid operand type for instruction");
3605 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3610 /// ::= ArithmeticOps TypeAndValue ',' Value {
3611 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3613 LocTy Loc; Value *LHS, *RHS;
3614 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3615 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3616 ParseValue(LHS->getType(), RHS, PFS))
3619 if (!LHS->getType()->isIntOrIntVectorTy())
3620 return Error(Loc,"instruction requires integer or integer vector operands");
3622 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3628 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3629 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3630 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3632 // Parse the integer/fp comparison predicate.
3636 if (ParseCmpPredicate(Pred, Opc) ||
3637 ParseTypeAndValue(LHS, Loc, PFS) ||
3638 ParseToken(lltok::comma, "expected ',' after compare value") ||
3639 ParseValue(LHS->getType(), RHS, PFS))
3642 if (Opc == Instruction::FCmp) {
3643 if (!LHS->getType()->isFPOrFPVectorTy())
3644 return Error(Loc, "fcmp requires floating point operands");
3645 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3647 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3648 if (!LHS->getType()->isIntOrIntVectorTy() &&
3649 !LHS->getType()->getScalarType()->isPointerTy())
3650 return Error(Loc, "icmp requires integer operands");
3651 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3656 //===----------------------------------------------------------------------===//
3657 // Other Instructions.
3658 //===----------------------------------------------------------------------===//
3662 /// ::= CastOpc TypeAndValue 'to' Type
3663 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3668 if (ParseTypeAndValue(Op, Loc, PFS) ||
3669 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3673 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3674 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3675 return Error(Loc, "invalid cast opcode for cast from '" +
3676 getTypeString(Op->getType()) + "' to '" +
3677 getTypeString(DestTy) + "'");
3679 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3684 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3685 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3687 Value *Op0, *Op1, *Op2;
3688 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3689 ParseToken(lltok::comma, "expected ',' after select condition") ||
3690 ParseTypeAndValue(Op1, PFS) ||
3691 ParseToken(lltok::comma, "expected ',' after select value") ||
3692 ParseTypeAndValue(Op2, PFS))
3695 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3696 return Error(Loc, Reason);
3698 Inst = SelectInst::Create(Op0, Op1, Op2);
3703 /// ::= 'va_arg' TypeAndValue ',' Type
3704 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3708 if (ParseTypeAndValue(Op, PFS) ||
3709 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3710 ParseType(EltTy, TypeLoc))
3713 if (!EltTy->isFirstClassType())
3714 return Error(TypeLoc, "va_arg requires operand with first class type");
3716 Inst = new VAArgInst(Op, EltTy);
3720 /// ParseExtractElement
3721 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3722 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3725 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3726 ParseToken(lltok::comma, "expected ',' after extract value") ||
3727 ParseTypeAndValue(Op1, PFS))
3730 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3731 return Error(Loc, "invalid extractelement operands");
3733 Inst = ExtractElementInst::Create(Op0, Op1);
3737 /// ParseInsertElement
3738 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3739 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3741 Value *Op0, *Op1, *Op2;
3742 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3743 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3744 ParseTypeAndValue(Op1, PFS) ||
3745 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3746 ParseTypeAndValue(Op2, PFS))
3749 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3750 return Error(Loc, "invalid insertelement operands");
3752 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3756 /// ParseShuffleVector
3757 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3758 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3760 Value *Op0, *Op1, *Op2;
3761 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3762 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3763 ParseTypeAndValue(Op1, PFS) ||
3764 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3765 ParseTypeAndValue(Op2, PFS))
3768 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3769 return Error(Loc, "invalid shufflevector operands");
3771 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3776 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3777 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3778 Type *Ty = 0; LocTy TypeLoc;
3781 if (ParseType(Ty, TypeLoc) ||
3782 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3783 ParseValue(Ty, Op0, PFS) ||
3784 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3785 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3786 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3789 bool AteExtraComma = false;
3790 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3792 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3794 if (!EatIfPresent(lltok::comma))
3797 if (Lex.getKind() == lltok::MetadataVar) {
3798 AteExtraComma = true;
3802 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3803 ParseValue(Ty, Op0, PFS) ||
3804 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3805 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3806 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3810 if (!Ty->isFirstClassType())
3811 return Error(TypeLoc, "phi node must have first class type");
3813 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
3814 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3815 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3817 return AteExtraComma ? InstExtraComma : InstNormal;
3821 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
3823 /// ::= 'catch' TypeAndValue
3825 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
3826 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
3827 Type *Ty = 0; LocTy TyLoc;
3828 Value *PersFn; LocTy PersFnLoc;
3830 if (ParseType(Ty, TyLoc) ||
3831 ParseToken(lltok::kw_personality, "expected 'personality'") ||
3832 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
3835 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
3836 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
3838 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
3839 LandingPadInst::ClauseType CT;
3840 if (EatIfPresent(lltok::kw_catch))
3841 CT = LandingPadInst::Catch;
3842 else if (EatIfPresent(lltok::kw_filter))
3843 CT = LandingPadInst::Filter;
3845 return TokError("expected 'catch' or 'filter' clause type");
3847 Value *V; LocTy VLoc;
3848 if (ParseTypeAndValue(V, VLoc, PFS)) {
3853 // A 'catch' type expects a non-array constant. A filter clause expects an
3855 if (CT == LandingPadInst::Catch) {
3856 if (isa<ArrayType>(V->getType()))
3857 Error(VLoc, "'catch' clause has an invalid type");
3859 if (!isa<ArrayType>(V->getType()))
3860 Error(VLoc, "'filter' clause has an invalid type");
3871 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3872 /// ParameterList OptionalAttrs
3873 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3875 AttrBuilder RetAttrs, FnAttrs;
3876 std::vector<unsigned> FwdRefAttrGrps;
3881 SmallVector<ParamInfo, 16> ArgList;
3882 LocTy CallLoc = Lex.getLoc();
3884 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3885 ParseOptionalCallingConv(CC) ||
3886 ParseOptionalReturnAttrs(RetAttrs) ||
3887 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3888 ParseValID(CalleeID) ||
3889 ParseParameterList(ArgList, PFS) ||
3890 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false))
3893 // If RetType is a non-function pointer type, then this is the short syntax
3894 // for the call, which means that RetType is just the return type. Infer the
3895 // rest of the function argument types from the arguments that are present.
3896 PointerType *PFTy = 0;
3897 FunctionType *Ty = 0;
3898 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3899 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3900 // Pull out the types of all of the arguments...
3901 std::vector<Type*> ParamTypes;
3902 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3903 ParamTypes.push_back(ArgList[i].V->getType());
3905 if (!FunctionType::isValidReturnType(RetType))
3906 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3908 Ty = FunctionType::get(RetType, ParamTypes, false);
3909 PFTy = PointerType::getUnqual(Ty);
3912 // Look up the callee.
3914 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3916 // Set up the Attribute for the function.
3917 SmallVector<AttributeSet, 8> Attrs;
3918 if (RetAttrs.hasAttributes())
3919 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3920 AttributeSet::ReturnIndex,
3923 SmallVector<Value*, 8> Args;
3925 // Loop through FunctionType's arguments and ensure they are specified
3926 // correctly. Also, gather any parameter attributes.
3927 FunctionType::param_iterator I = Ty->param_begin();
3928 FunctionType::param_iterator E = Ty->param_end();
3929 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3930 Type *ExpectedTy = 0;
3933 } else if (!Ty->isVarArg()) {
3934 return Error(ArgList[i].Loc, "too many arguments specified");
3937 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3938 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3939 getTypeString(ExpectedTy) + "'");
3940 Args.push_back(ArgList[i].V);
3941 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3942 AttrBuilder B(ArgList[i].Attrs, i + 1);
3943 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3948 return Error(CallLoc, "not enough parameters specified for call");
3950 if (FnAttrs.hasAttributes())
3951 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3952 AttributeSet::FunctionIndex,
3955 // Finish off the Attribute and check them
3956 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3958 CallInst *CI = CallInst::Create(Callee, Args);
3959 CI->setTailCall(isTail);
3960 CI->setCallingConv(CC);
3961 CI->setAttributes(PAL);
3962 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
3967 //===----------------------------------------------------------------------===//
3968 // Memory Instructions.
3969 //===----------------------------------------------------------------------===//
3972 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
3973 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
3976 unsigned Alignment = 0;
3978 if (ParseType(Ty)) return true;
3980 bool AteExtraComma = false;
3981 if (EatIfPresent(lltok::comma)) {
3982 if (Lex.getKind() == lltok::kw_align) {
3983 if (ParseOptionalAlignment(Alignment)) return true;
3984 } else if (Lex.getKind() == lltok::MetadataVar) {
3985 AteExtraComma = true;
3987 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3988 ParseOptionalCommaAlign(Alignment, AteExtraComma))
3993 if (Size && !Size->getType()->isIntegerTy())
3994 return Error(SizeLoc, "element count must have integer type");
3996 Inst = new AllocaInst(Ty, Size, Alignment);
3997 return AteExtraComma ? InstExtraComma : InstNormal;
4001 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
4002 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
4003 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4004 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
4005 Value *Val; LocTy Loc;
4006 unsigned Alignment = 0;
4007 bool AteExtraComma = false;
4008 bool isAtomic = false;
4009 AtomicOrdering Ordering = NotAtomic;
4010 SynchronizationScope Scope = CrossThread;
4012 if (Lex.getKind() == lltok::kw_atomic) {
4017 bool isVolatile = false;
4018 if (Lex.getKind() == lltok::kw_volatile) {
4023 if (ParseTypeAndValue(Val, Loc, PFS) ||
4024 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4025 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4028 if (!Val->getType()->isPointerTy() ||
4029 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
4030 return Error(Loc, "load operand must be a pointer to a first class type");
4031 if (isAtomic && !Alignment)
4032 return Error(Loc, "atomic load must have explicit non-zero alignment");
4033 if (Ordering == Release || Ordering == AcquireRelease)
4034 return Error(Loc, "atomic load cannot use Release ordering");
4036 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
4037 return AteExtraComma ? InstExtraComma : InstNormal;
4042 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
4043 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
4044 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4045 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
4046 Value *Val, *Ptr; LocTy Loc, PtrLoc;
4047 unsigned Alignment = 0;
4048 bool AteExtraComma = false;
4049 bool isAtomic = false;
4050 AtomicOrdering Ordering = NotAtomic;
4051 SynchronizationScope Scope = CrossThread;
4053 if (Lex.getKind() == lltok::kw_atomic) {
4058 bool isVolatile = false;
4059 if (Lex.getKind() == lltok::kw_volatile) {
4064 if (ParseTypeAndValue(Val, Loc, PFS) ||
4065 ParseToken(lltok::comma, "expected ',' after store operand") ||
4066 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4067 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4068 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4071 if (!Ptr->getType()->isPointerTy())
4072 return Error(PtrLoc, "store operand must be a pointer");
4073 if (!Val->getType()->isFirstClassType())
4074 return Error(Loc, "store operand must be a first class value");
4075 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4076 return Error(Loc, "stored value and pointer type do not match");
4077 if (isAtomic && !Alignment)
4078 return Error(Loc, "atomic store must have explicit non-zero alignment");
4079 if (Ordering == Acquire || Ordering == AcquireRelease)
4080 return Error(Loc, "atomic store cannot use Acquire ordering");
4082 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
4083 return AteExtraComma ? InstExtraComma : InstNormal;
4087 /// ::= 'cmpxchg' 'volatile'? TypeAndValue ',' TypeAndValue ',' TypeAndValue
4088 /// 'singlethread'? AtomicOrdering
4089 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
4090 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
4091 bool AteExtraComma = false;
4092 AtomicOrdering Ordering = NotAtomic;
4093 SynchronizationScope Scope = CrossThread;
4094 bool isVolatile = false;
4096 if (EatIfPresent(lltok::kw_volatile))
4099 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4100 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
4101 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
4102 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
4103 ParseTypeAndValue(New, NewLoc, PFS) ||
4104 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4107 if (Ordering == Unordered)
4108 return TokError("cmpxchg cannot be unordered");
4109 if (!Ptr->getType()->isPointerTy())
4110 return Error(PtrLoc, "cmpxchg operand must be a pointer");
4111 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
4112 return Error(CmpLoc, "compare value and pointer type do not match");
4113 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
4114 return Error(NewLoc, "new value and pointer type do not match");
4115 if (!New->getType()->isIntegerTy())
4116 return Error(NewLoc, "cmpxchg operand must be an integer");
4117 unsigned Size = New->getType()->getPrimitiveSizeInBits();
4118 if (Size < 8 || (Size & (Size - 1)))
4119 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
4122 AtomicCmpXchgInst *CXI =
4123 new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, Scope);
4124 CXI->setVolatile(isVolatile);
4126 return AteExtraComma ? InstExtraComma : InstNormal;
4130 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
4131 /// 'singlethread'? AtomicOrdering
4132 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
4133 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
4134 bool AteExtraComma = false;
4135 AtomicOrdering Ordering = NotAtomic;
4136 SynchronizationScope Scope = CrossThread;
4137 bool isVolatile = false;
4138 AtomicRMWInst::BinOp Operation;
4140 if (EatIfPresent(lltok::kw_volatile))
4143 switch (Lex.getKind()) {
4144 default: return TokError("expected binary operation in atomicrmw");
4145 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
4146 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
4147 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
4148 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
4149 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
4150 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
4151 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
4152 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
4153 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
4154 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
4155 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
4157 Lex.Lex(); // Eat the operation.
4159 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4160 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
4161 ParseTypeAndValue(Val, ValLoc, PFS) ||
4162 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4165 if (Ordering == Unordered)
4166 return TokError("atomicrmw cannot be unordered");
4167 if (!Ptr->getType()->isPointerTy())
4168 return Error(PtrLoc, "atomicrmw operand must be a pointer");
4169 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4170 return Error(ValLoc, "atomicrmw value and pointer type do not match");
4171 if (!Val->getType()->isIntegerTy())
4172 return Error(ValLoc, "atomicrmw operand must be an integer");
4173 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
4174 if (Size < 8 || (Size & (Size - 1)))
4175 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
4178 AtomicRMWInst *RMWI =
4179 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
4180 RMWI->setVolatile(isVolatile);
4182 return AteExtraComma ? InstExtraComma : InstNormal;
4186 /// ::= 'fence' 'singlethread'? AtomicOrdering
4187 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
4188 AtomicOrdering Ordering = NotAtomic;
4189 SynchronizationScope Scope = CrossThread;
4190 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4193 if (Ordering == Unordered)
4194 return TokError("fence cannot be unordered");
4195 if (Ordering == Monotonic)
4196 return TokError("fence cannot be monotonic");
4198 Inst = new FenceInst(Context, Ordering, Scope);
4202 /// ParseGetElementPtr
4203 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
4204 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
4209 bool InBounds = EatIfPresent(lltok::kw_inbounds);
4211 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4213 if (!Ptr->getType()->getScalarType()->isPointerTy())
4214 return Error(Loc, "base of getelementptr must be a pointer");
4216 SmallVector<Value*, 16> Indices;
4217 bool AteExtraComma = false;
4218 while (EatIfPresent(lltok::comma)) {
4219 if (Lex.getKind() == lltok::MetadataVar) {
4220 AteExtraComma = true;
4223 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4224 if (!Val->getType()->getScalarType()->isIntegerTy())
4225 return Error(EltLoc, "getelementptr index must be an integer");
4226 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4227 return Error(EltLoc, "getelementptr index type missmatch");
4228 if (Val->getType()->isVectorTy()) {
4229 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4230 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4231 if (ValNumEl != PtrNumEl)
4232 return Error(EltLoc,
4233 "getelementptr vector index has a wrong number of elements");
4235 Indices.push_back(Val);
4238 if (!GetElementPtrInst::getIndexedType(Ptr->getType(), Indices))
4239 return Error(Loc, "invalid getelementptr indices");
4240 Inst = GetElementPtrInst::Create(Ptr, Indices);
4242 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4243 return AteExtraComma ? InstExtraComma : InstNormal;
4246 /// ParseExtractValue
4247 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4248 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4249 Value *Val; LocTy Loc;
4250 SmallVector<unsigned, 4> Indices;
4252 if (ParseTypeAndValue(Val, Loc, PFS) ||
4253 ParseIndexList(Indices, AteExtraComma))
4256 if (!Val->getType()->isAggregateType())
4257 return Error(Loc, "extractvalue operand must be aggregate type");
4259 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4260 return Error(Loc, "invalid indices for extractvalue");
4261 Inst = ExtractValueInst::Create(Val, Indices);
4262 return AteExtraComma ? InstExtraComma : InstNormal;
4265 /// ParseInsertValue
4266 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4267 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4268 Value *Val0, *Val1; LocTy Loc0, Loc1;
4269 SmallVector<unsigned, 4> Indices;
4271 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4272 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4273 ParseTypeAndValue(Val1, Loc1, PFS) ||
4274 ParseIndexList(Indices, AteExtraComma))
4277 if (!Val0->getType()->isAggregateType())
4278 return Error(Loc0, "insertvalue operand must be aggregate type");
4280 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4281 return Error(Loc0, "invalid indices for insertvalue");
4282 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4283 return AteExtraComma ? InstExtraComma : InstNormal;
4286 //===----------------------------------------------------------------------===//
4287 // Embedded metadata.
4288 //===----------------------------------------------------------------------===//
4290 /// ParseMDNodeVector
4291 /// ::= Element (',' Element)*
4293 /// ::= 'null' | TypeAndValue
4294 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4295 PerFunctionState *PFS) {
4296 // Check for an empty list.
4297 if (Lex.getKind() == lltok::rbrace)
4301 // Null is a special case since it is typeless.
4302 if (EatIfPresent(lltok::kw_null)) {
4308 if (ParseTypeAndValue(V, PFS)) return true;
4310 } while (EatIfPresent(lltok::comma));