1 //===-- LLParser.cpp - Parser Class ---------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the parser class for .ll files.
12 //===----------------------------------------------------------------------===//
15 #include "llvm/ADT/SmallPtrSet.h"
16 #include "llvm/AutoUpgrade.h"
17 #include "llvm/IR/CallingConv.h"
18 #include "llvm/IR/Constants.h"
19 #include "llvm/IR/DerivedTypes.h"
20 #include "llvm/IR/InlineAsm.h"
21 #include "llvm/IR/Instructions.h"
22 #include "llvm/IR/LLVMContext.h"
23 #include "llvm/IR/Module.h"
24 #include "llvm/IR/Operator.h"
25 #include "llvm/IR/ValueSymbolTable.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/Support/raw_ostream.h"
30 static std::string getTypeString(Type *T) {
32 raw_string_ostream Tmp(Result);
37 /// Run: module ::= toplevelentity*
38 bool LLParser::Run() {
42 return ParseTopLevelEntities() ||
43 ValidateEndOfModule();
46 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
48 bool LLParser::ValidateEndOfModule() {
49 // Handle any instruction metadata forward references.
50 if (!ForwardRefInstMetadata.empty()) {
51 for (DenseMap<Instruction*, std::vector<MDRef> >::iterator
52 I = ForwardRefInstMetadata.begin(), E = ForwardRefInstMetadata.end();
54 Instruction *Inst = I->first;
55 const std::vector<MDRef> &MDList = I->second;
57 for (unsigned i = 0, e = MDList.size(); i != e; ++i) {
58 unsigned SlotNo = MDList[i].MDSlot;
60 if (SlotNo >= NumberedMetadata.size() || NumberedMetadata[SlotNo] == 0)
61 return Error(MDList[i].Loc, "use of undefined metadata '!" +
63 Inst->setMetadata(MDList[i].MDKind, NumberedMetadata[SlotNo]);
66 ForwardRefInstMetadata.clear();
69 for (unsigned I = 0, E = InstsWithTBAATag.size(); I < E; I++)
70 UpgradeInstWithTBAATag(InstsWithTBAATag[I]);
72 // Handle any function attribute group forward references.
73 for (std::map<Value*, std::vector<unsigned> >::iterator
74 I = ForwardRefAttrGroups.begin(), E = ForwardRefAttrGroups.end();
77 std::vector<unsigned> &Vec = I->second;
80 for (std::vector<unsigned>::iterator VI = Vec.begin(), VE = Vec.end();
82 B.merge(NumberedAttrBuilders[*VI]);
84 if (Function *Fn = dyn_cast<Function>(V)) {
85 AttributeSet AS = Fn->getAttributes();
86 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
87 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
88 AS.getFnAttributes());
92 // If the alignment was parsed as an attribute, move to the alignment
94 if (FnAttrs.hasAlignmentAttr()) {
95 Fn->setAlignment(FnAttrs.getAlignment());
96 FnAttrs.removeAttribute(Attribute::Alignment);
99 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
100 AttributeSet::get(Context,
101 AttributeSet::FunctionIndex,
103 Fn->setAttributes(AS);
104 } else if (CallInst *CI = dyn_cast<CallInst>(V)) {
105 AttributeSet AS = CI->getAttributes();
106 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
107 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
108 AS.getFnAttributes());
110 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
111 AttributeSet::get(Context,
112 AttributeSet::FunctionIndex,
114 CI->setAttributes(AS);
115 } else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
116 AttributeSet AS = II->getAttributes();
117 AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
118 AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
119 AS.getFnAttributes());
121 AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
122 AttributeSet::get(Context,
123 AttributeSet::FunctionIndex,
125 II->setAttributes(AS);
127 llvm_unreachable("invalid object with forward attribute group reference");
131 // If there are entries in ForwardRefBlockAddresses at this point, they are
132 // references after the function was defined. Resolve those now.
133 while (!ForwardRefBlockAddresses.empty()) {
134 // Okay, we are referencing an already-parsed function, resolve them now.
136 const ValID &Fn = ForwardRefBlockAddresses.begin()->first;
137 if (Fn.Kind == ValID::t_GlobalName)
138 TheFn = M->getFunction(Fn.StrVal);
139 else if (Fn.UIntVal < NumberedVals.size())
140 TheFn = dyn_cast<Function>(NumberedVals[Fn.UIntVal]);
143 return Error(Fn.Loc, "unknown function referenced by blockaddress");
145 // Resolve all these references.
146 if (ResolveForwardRefBlockAddresses(TheFn,
147 ForwardRefBlockAddresses.begin()->second,
151 ForwardRefBlockAddresses.erase(ForwardRefBlockAddresses.begin());
154 for (unsigned i = 0, e = NumberedTypes.size(); i != e; ++i)
155 if (NumberedTypes[i].second.isValid())
156 return Error(NumberedTypes[i].second,
157 "use of undefined type '%" + Twine(i) + "'");
159 for (StringMap<std::pair<Type*, LocTy> >::iterator I =
160 NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
161 if (I->second.second.isValid())
162 return Error(I->second.second,
163 "use of undefined type named '" + I->getKey() + "'");
165 if (!ForwardRefVals.empty())
166 return Error(ForwardRefVals.begin()->second.second,
167 "use of undefined value '@" + ForwardRefVals.begin()->first +
170 if (!ForwardRefValIDs.empty())
171 return Error(ForwardRefValIDs.begin()->second.second,
172 "use of undefined value '@" +
173 Twine(ForwardRefValIDs.begin()->first) + "'");
175 if (!ForwardRefMDNodes.empty())
176 return Error(ForwardRefMDNodes.begin()->second.second,
177 "use of undefined metadata '!" +
178 Twine(ForwardRefMDNodes.begin()->first) + "'");
181 // Look for intrinsic functions and CallInst that need to be upgraded
182 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
183 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
188 bool LLParser::ResolveForwardRefBlockAddresses(Function *TheFn,
189 std::vector<std::pair<ValID, GlobalValue*> > &Refs,
190 PerFunctionState *PFS) {
191 // Loop over all the references, resolving them.
192 for (unsigned i = 0, e = Refs.size(); i != e; ++i) {
195 if (Refs[i].first.Kind == ValID::t_LocalName)
196 Res = PFS->GetBB(Refs[i].first.StrVal, Refs[i].first.Loc);
198 Res = PFS->GetBB(Refs[i].first.UIntVal, Refs[i].first.Loc);
199 } else if (Refs[i].first.Kind == ValID::t_LocalID) {
200 return Error(Refs[i].first.Loc,
201 "cannot take address of numeric label after the function is defined");
203 Res = dyn_cast_or_null<BasicBlock>(
204 TheFn->getValueSymbolTable().lookup(Refs[i].first.StrVal));
208 return Error(Refs[i].first.Loc,
209 "referenced value is not a basic block");
211 // Get the BlockAddress for this and update references to use it.
212 BlockAddress *BA = BlockAddress::get(TheFn, Res);
213 Refs[i].second->replaceAllUsesWith(BA);
214 Refs[i].second->eraseFromParent();
220 //===----------------------------------------------------------------------===//
221 // Top-Level Entities
222 //===----------------------------------------------------------------------===//
224 bool LLParser::ParseTopLevelEntities() {
226 switch (Lex.getKind()) {
227 default: return TokError("expected top-level entity");
228 case lltok::Eof: return false;
229 case lltok::kw_declare: if (ParseDeclare()) return true; break;
230 case lltok::kw_define: if (ParseDefine()) return true; break;
231 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
232 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
233 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
234 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
235 case lltok::LocalVar: if (ParseNamedType()) return true; break;
236 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
237 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
238 case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
239 case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
241 // The Global variable production with no name can have many different
242 // optional leading prefixes, the production is:
243 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
244 // OptionalAddrSpace OptionalUnNammedAddr
245 // ('constant'|'global') ...
246 case lltok::kw_private: // OptionalLinkage
247 case lltok::kw_linker_private: // OptionalLinkage
248 case lltok::kw_linker_private_weak: // OptionalLinkage
249 case lltok::kw_linker_private_weak_def_auto: // FIXME: backwards compat.
250 case lltok::kw_internal: // OptionalLinkage
251 case lltok::kw_weak: // OptionalLinkage
252 case lltok::kw_weak_odr: // OptionalLinkage
253 case lltok::kw_linkonce: // OptionalLinkage
254 case lltok::kw_linkonce_odr: // OptionalLinkage
255 case lltok::kw_linkonce_odr_auto_hide: // OptionalLinkage
256 case lltok::kw_appending: // OptionalLinkage
257 case lltok::kw_dllexport: // OptionalLinkage
258 case lltok::kw_common: // OptionalLinkage
259 case lltok::kw_dllimport: // OptionalLinkage
260 case lltok::kw_extern_weak: // OptionalLinkage
261 case lltok::kw_external: { // OptionalLinkage
262 unsigned Linkage, Visibility;
263 if (ParseOptionalLinkage(Linkage) ||
264 ParseOptionalVisibility(Visibility) ||
265 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
269 case lltok::kw_default: // OptionalVisibility
270 case lltok::kw_hidden: // OptionalVisibility
271 case lltok::kw_protected: { // OptionalVisibility
273 if (ParseOptionalVisibility(Visibility) ||
274 ParseGlobal("", SMLoc(), 0, false, Visibility))
279 case lltok::kw_thread_local: // OptionalThreadLocal
280 case lltok::kw_addrspace: // OptionalAddrSpace
281 case lltok::kw_constant: // GlobalType
282 case lltok::kw_global: // GlobalType
283 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
286 case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
293 /// ::= 'module' 'asm' STRINGCONSTANT
294 bool LLParser::ParseModuleAsm() {
295 assert(Lex.getKind() == lltok::kw_module);
299 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
300 ParseStringConstant(AsmStr)) return true;
302 M->appendModuleInlineAsm(AsmStr);
307 /// ::= 'target' 'triple' '=' STRINGCONSTANT
308 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
309 bool LLParser::ParseTargetDefinition() {
310 assert(Lex.getKind() == lltok::kw_target);
313 default: return TokError("unknown target property");
314 case lltok::kw_triple:
316 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
317 ParseStringConstant(Str))
319 M->setTargetTriple(Str);
321 case lltok::kw_datalayout:
323 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
324 ParseStringConstant(Str))
326 M->setDataLayout(Str);
332 /// ::= 'deplibs' '=' '[' ']'
333 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
334 /// FIXME: Remove in 4.0. Currently parse, but ignore.
335 bool LLParser::ParseDepLibs() {
336 assert(Lex.getKind() == lltok::kw_deplibs);
338 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
339 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
342 if (EatIfPresent(lltok::rsquare))
347 if (ParseStringConstant(Str)) return true;
348 } while (EatIfPresent(lltok::comma));
350 return ParseToken(lltok::rsquare, "expected ']' at end of list");
353 /// ParseUnnamedType:
354 /// ::= LocalVarID '=' 'type' type
355 bool LLParser::ParseUnnamedType() {
356 LocTy TypeLoc = Lex.getLoc();
357 unsigned TypeID = Lex.getUIntVal();
358 Lex.Lex(); // eat LocalVarID;
360 if (ParseToken(lltok::equal, "expected '=' after name") ||
361 ParseToken(lltok::kw_type, "expected 'type' after '='"))
364 if (TypeID >= NumberedTypes.size())
365 NumberedTypes.resize(TypeID+1);
368 if (ParseStructDefinition(TypeLoc, "",
369 NumberedTypes[TypeID], Result)) return true;
371 if (!isa<StructType>(Result)) {
372 std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
374 return Error(TypeLoc, "non-struct types may not be recursive");
375 Entry.first = Result;
376 Entry.second = SMLoc();
384 /// ::= LocalVar '=' 'type' type
385 bool LLParser::ParseNamedType() {
386 std::string Name = Lex.getStrVal();
387 LocTy NameLoc = Lex.getLoc();
388 Lex.Lex(); // eat LocalVar.
390 if (ParseToken(lltok::equal, "expected '=' after name") ||
391 ParseToken(lltok::kw_type, "expected 'type' after name"))
395 if (ParseStructDefinition(NameLoc, Name,
396 NamedTypes[Name], Result)) return true;
398 if (!isa<StructType>(Result)) {
399 std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
401 return Error(NameLoc, "non-struct types may not be recursive");
402 Entry.first = Result;
403 Entry.second = SMLoc();
411 /// ::= 'declare' FunctionHeader
412 bool LLParser::ParseDeclare() {
413 assert(Lex.getKind() == lltok::kw_declare);
417 return ParseFunctionHeader(F, false);
421 /// ::= 'define' FunctionHeader '{' ...
422 bool LLParser::ParseDefine() {
423 assert(Lex.getKind() == lltok::kw_define);
427 return ParseFunctionHeader(F, true) ||
428 ParseFunctionBody(*F);
434 bool LLParser::ParseGlobalType(bool &IsConstant) {
435 if (Lex.getKind() == lltok::kw_constant)
437 else if (Lex.getKind() == lltok::kw_global)
441 return TokError("expected 'global' or 'constant'");
447 /// ParseUnnamedGlobal:
448 /// OptionalVisibility ALIAS ...
449 /// OptionalLinkage OptionalVisibility ... -> global variable
450 /// GlobalID '=' OptionalVisibility ALIAS ...
451 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
452 bool LLParser::ParseUnnamedGlobal() {
453 unsigned VarID = NumberedVals.size();
455 LocTy NameLoc = Lex.getLoc();
457 // Handle the GlobalID form.
458 if (Lex.getKind() == lltok::GlobalID) {
459 if (Lex.getUIntVal() != VarID)
460 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
462 Lex.Lex(); // eat GlobalID;
464 if (ParseToken(lltok::equal, "expected '=' after name"))
469 unsigned Linkage, Visibility;
470 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
471 ParseOptionalVisibility(Visibility))
474 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
475 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
476 return ParseAlias(Name, NameLoc, Visibility);
479 /// ParseNamedGlobal:
480 /// GlobalVar '=' OptionalVisibility ALIAS ...
481 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
482 bool LLParser::ParseNamedGlobal() {
483 assert(Lex.getKind() == lltok::GlobalVar);
484 LocTy NameLoc = Lex.getLoc();
485 std::string Name = Lex.getStrVal();
489 unsigned Linkage, Visibility;
490 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
491 ParseOptionalLinkage(Linkage, HasLinkage) ||
492 ParseOptionalVisibility(Visibility))
495 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
496 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
497 return ParseAlias(Name, NameLoc, Visibility);
501 // ::= '!' STRINGCONSTANT
502 bool LLParser::ParseMDString(MDString *&Result) {
504 if (ParseStringConstant(Str)) return true;
505 Result = MDString::get(Context, Str);
510 // ::= '!' MDNodeNumber
512 /// This version of ParseMDNodeID returns the slot number and null in the case
513 /// of a forward reference.
514 bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
515 // !{ ..., !42, ... }
516 if (ParseUInt32(SlotNo)) return true;
518 // Check existing MDNode.
519 if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != 0)
520 Result = NumberedMetadata[SlotNo];
526 bool LLParser::ParseMDNodeID(MDNode *&Result) {
527 // !{ ..., !42, ... }
529 if (ParseMDNodeID(Result, MID)) return true;
531 // If not a forward reference, just return it now.
532 if (Result) return false;
534 // Otherwise, create MDNode forward reference.
535 MDNode *FwdNode = MDNode::getTemporary(Context, None);
536 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
538 if (NumberedMetadata.size() <= MID)
539 NumberedMetadata.resize(MID+1);
540 NumberedMetadata[MID] = FwdNode;
545 /// ParseNamedMetadata:
546 /// !foo = !{ !1, !2 }
547 bool LLParser::ParseNamedMetadata() {
548 assert(Lex.getKind() == lltok::MetadataVar);
549 std::string Name = Lex.getStrVal();
552 if (ParseToken(lltok::equal, "expected '=' here") ||
553 ParseToken(lltok::exclaim, "Expected '!' here") ||
554 ParseToken(lltok::lbrace, "Expected '{' here"))
557 NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
558 if (Lex.getKind() != lltok::rbrace)
560 if (ParseToken(lltok::exclaim, "Expected '!' here"))
564 if (ParseMDNodeID(N)) return true;
566 } while (EatIfPresent(lltok::comma));
568 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
574 /// ParseStandaloneMetadata:
576 bool LLParser::ParseStandaloneMetadata() {
577 assert(Lex.getKind() == lltok::exclaim);
579 unsigned MetadataID = 0;
583 SmallVector<Value *, 16> Elts;
584 if (ParseUInt32(MetadataID) ||
585 ParseToken(lltok::equal, "expected '=' here") ||
586 ParseType(Ty, TyLoc) ||
587 ParseToken(lltok::exclaim, "Expected '!' here") ||
588 ParseToken(lltok::lbrace, "Expected '{' here") ||
589 ParseMDNodeVector(Elts, NULL) ||
590 ParseToken(lltok::rbrace, "expected end of metadata node"))
593 MDNode *Init = MDNode::get(Context, Elts);
595 // See if this was forward referenced, if so, handle it.
596 std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
597 FI = ForwardRefMDNodes.find(MetadataID);
598 if (FI != ForwardRefMDNodes.end()) {
599 MDNode *Temp = FI->second.first;
600 Temp->replaceAllUsesWith(Init);
601 MDNode::deleteTemporary(Temp);
602 ForwardRefMDNodes.erase(FI);
604 assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
606 if (MetadataID >= NumberedMetadata.size())
607 NumberedMetadata.resize(MetadataID+1);
609 if (NumberedMetadata[MetadataID] != 0)
610 return TokError("Metadata id is already used");
611 NumberedMetadata[MetadataID] = Init;
618 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
621 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
622 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
624 /// Everything through visibility has already been parsed.
626 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
627 unsigned Visibility) {
628 assert(Lex.getKind() == lltok::kw_alias);
631 LocTy LinkageLoc = Lex.getLoc();
632 if (ParseOptionalLinkage(Linkage))
635 if (Linkage != GlobalValue::ExternalLinkage &&
636 Linkage != GlobalValue::WeakAnyLinkage &&
637 Linkage != GlobalValue::WeakODRLinkage &&
638 Linkage != GlobalValue::InternalLinkage &&
639 Linkage != GlobalValue::PrivateLinkage &&
640 Linkage != GlobalValue::LinkerPrivateLinkage &&
641 Linkage != GlobalValue::LinkerPrivateWeakLinkage)
642 return Error(LinkageLoc, "invalid linkage type for alias");
645 LocTy AliaseeLoc = Lex.getLoc();
646 if (Lex.getKind() != lltok::kw_bitcast &&
647 Lex.getKind() != lltok::kw_getelementptr) {
648 if (ParseGlobalTypeAndValue(Aliasee)) return true;
650 // The bitcast dest type is not present, it is implied by the dest type.
652 if (ParseValID(ID)) return true;
653 if (ID.Kind != ValID::t_Constant)
654 return Error(AliaseeLoc, "invalid aliasee");
655 Aliasee = ID.ConstantVal;
658 if (!Aliasee->getType()->isPointerTy())
659 return Error(AliaseeLoc, "alias must have pointer type");
661 // Okay, create the alias but do not insert it into the module yet.
662 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
663 (GlobalValue::LinkageTypes)Linkage, Name,
665 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
667 // See if this value already exists in the symbol table. If so, it is either
668 // a redefinition or a definition of a forward reference.
669 if (GlobalValue *Val = M->getNamedValue(Name)) {
670 // See if this was a redefinition. If so, there is no entry in
672 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
673 I = ForwardRefVals.find(Name);
674 if (I == ForwardRefVals.end())
675 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
677 // Otherwise, this was a definition of forward ref. Verify that types
679 if (Val->getType() != GA->getType())
680 return Error(NameLoc,
681 "forward reference and definition of alias have different types");
683 // If they agree, just RAUW the old value with the alias and remove the
685 Val->replaceAllUsesWith(GA);
686 Val->eraseFromParent();
687 ForwardRefVals.erase(I);
690 // Insert into the module, we know its name won't collide now.
691 M->getAliasList().push_back(GA);
692 assert(GA->getName() == Name && "Should not be a name conflict!");
698 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
699 /// OptionalAddrSpace OptionalUnNammedAddr
700 /// OptionalExternallyInitialized GlobalType Type Const
701 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
702 /// OptionalAddrSpace OptionalUnNammedAddr
703 /// OptionalExternallyInitialized GlobalType Type Const
705 /// Everything through visibility has been parsed already.
707 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
708 unsigned Linkage, bool HasLinkage,
709 unsigned Visibility) {
711 bool IsConstant, UnnamedAddr, IsExternallyInitialized;
712 GlobalVariable::ThreadLocalMode TLM;
713 LocTy UnnamedAddrLoc;
714 LocTy IsExternallyInitializedLoc;
718 if (ParseOptionalThreadLocal(TLM) ||
719 ParseOptionalAddrSpace(AddrSpace) ||
720 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
722 ParseOptionalToken(lltok::kw_externally_initialized,
723 IsExternallyInitialized,
724 &IsExternallyInitializedLoc) ||
725 ParseGlobalType(IsConstant) ||
726 ParseType(Ty, TyLoc))
729 // If the linkage is specified and is external, then no initializer is
732 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
733 Linkage != GlobalValue::ExternalWeakLinkage &&
734 Linkage != GlobalValue::ExternalLinkage)) {
735 if (ParseGlobalValue(Ty, Init))
739 if (Ty->isFunctionTy() || Ty->isLabelTy())
740 return Error(TyLoc, "invalid type for global variable");
742 GlobalVariable *GV = 0;
744 // See if the global was forward referenced, if so, use the global.
746 if (GlobalValue *GVal = M->getNamedValue(Name)) {
747 if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
748 return Error(NameLoc, "redefinition of global '@" + Name + "'");
749 GV = cast<GlobalVariable>(GVal);
752 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
753 I = ForwardRefValIDs.find(NumberedVals.size());
754 if (I != ForwardRefValIDs.end()) {
755 GV = cast<GlobalVariable>(I->second.first);
756 ForwardRefValIDs.erase(I);
761 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
762 Name, 0, GlobalVariable::NotThreadLocal,
765 if (GV->getType()->getElementType() != Ty)
767 "forward reference and definition of global have different types");
769 // Move the forward-reference to the correct spot in the module.
770 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
774 NumberedVals.push_back(GV);
776 // Set the parsed properties on the global.
778 GV->setInitializer(Init);
779 GV->setConstant(IsConstant);
780 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
781 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
782 GV->setExternallyInitialized(IsExternallyInitialized);
783 GV->setThreadLocalMode(TLM);
784 GV->setUnnamedAddr(UnnamedAddr);
786 // Parse attributes on the global.
787 while (Lex.getKind() == lltok::comma) {
790 if (Lex.getKind() == lltok::kw_section) {
792 GV->setSection(Lex.getStrVal());
793 if (ParseToken(lltok::StringConstant, "expected global section string"))
795 } else if (Lex.getKind() == lltok::kw_align) {
797 if (ParseOptionalAlignment(Alignment)) return true;
798 GV->setAlignment(Alignment);
800 TokError("unknown global variable property!");
807 /// ParseUnnamedAttrGrp
808 /// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
809 bool LLParser::ParseUnnamedAttrGrp() {
810 assert(Lex.getKind() == lltok::kw_attributes);
811 LocTy AttrGrpLoc = Lex.getLoc();
814 assert(Lex.getKind() == lltok::AttrGrpID);
815 unsigned VarID = Lex.getUIntVal();
816 std::vector<unsigned> unused;
820 if (ParseToken(lltok::equal, "expected '=' here") ||
821 ParseToken(lltok::lbrace, "expected '{' here") ||
822 ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
824 ParseToken(lltok::rbrace, "expected end of attribute group"))
827 if (!NumberedAttrBuilders[VarID].hasAttributes())
828 return Error(AttrGrpLoc, "attribute group has no attributes");
833 /// ParseFnAttributeValuePairs
834 /// ::= <attr> | <attr> '=' <value>
835 bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
836 std::vector<unsigned> &FwdRefAttrGrps,
837 bool inAttrGrp, LocTy &BuiltinLoc) {
838 bool HaveError = false;
843 lltok::Kind Token = Lex.getKind();
844 if (Token == lltok::kw_builtin)
845 BuiltinLoc = Lex.getLoc();
848 if (!inAttrGrp) return HaveError;
849 return Error(Lex.getLoc(), "unterminated attribute group");
854 case lltok::AttrGrpID: {
855 // Allow a function to reference an attribute group:
857 // define void @foo() #1 { ... }
861 "cannot have an attribute group reference in an attribute group");
863 unsigned AttrGrpNum = Lex.getUIntVal();
864 if (inAttrGrp) break;
866 // Save the reference to the attribute group. We'll fill it in later.
867 FwdRefAttrGrps.push_back(AttrGrpNum);
870 // Target-dependent attributes:
871 case lltok::StringConstant: {
872 std::string Attr = Lex.getStrVal();
875 if (EatIfPresent(lltok::equal) &&
876 ParseStringConstant(Val))
879 B.addAttribute(Attr, Val);
883 // Target-independent attributes:
884 case lltok::kw_align: {
885 // As a hack, we allow function alignment to be initially parsed as an
886 // attribute on a function declaration/definition or added to an attribute
887 // group and later moved to the alignment field.
891 if (ParseToken(lltok::equal, "expected '=' here") ||
892 ParseUInt32(Alignment))
895 if (ParseOptionalAlignment(Alignment))
898 B.addAlignmentAttr(Alignment);
901 case lltok::kw_alignstack: {
905 if (ParseToken(lltok::equal, "expected '=' here") ||
906 ParseUInt32(Alignment))
909 if (ParseOptionalStackAlignment(Alignment))
912 B.addStackAlignmentAttr(Alignment);
915 case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
916 case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
917 case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
918 case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
919 case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
920 case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
921 case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
922 case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
923 case lltok::kw_noimplicitfloat: B.addAttribute(Attribute::NoImplicitFloat); break;
924 case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
925 case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
926 case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
927 case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
928 case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
929 case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
930 case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
931 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
932 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
933 case lltok::kw_returns_twice: B.addAttribute(Attribute::ReturnsTwice); break;
934 case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
935 case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
936 case lltok::kw_sspstrong: B.addAttribute(Attribute::StackProtectStrong); break;
937 case lltok::kw_sanitize_address: B.addAttribute(Attribute::SanitizeAddress); break;
938 case lltok::kw_sanitize_thread: B.addAttribute(Attribute::SanitizeThread); break;
939 case lltok::kw_sanitize_memory: B.addAttribute(Attribute::SanitizeMemory); break;
940 case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
943 case lltok::kw_inreg:
944 case lltok::kw_signext:
945 case lltok::kw_zeroext:
948 "invalid use of attribute on a function");
950 case lltok::kw_byval:
952 case lltok::kw_noalias:
953 case lltok::kw_nocapture:
954 case lltok::kw_returned:
958 "invalid use of parameter-only attribute on a function");
966 //===----------------------------------------------------------------------===//
967 // GlobalValue Reference/Resolution Routines.
968 //===----------------------------------------------------------------------===//
970 /// GetGlobalVal - Get a value with the specified name or ID, creating a
971 /// forward reference record if needed. This can return null if the value
972 /// exists but does not have the right type.
973 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
975 PointerType *PTy = dyn_cast<PointerType>(Ty);
977 Error(Loc, "global variable reference must have pointer type");
981 // Look this name up in the normal function symbol table.
983 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
985 // If this is a forward reference for the value, see if we already created a
986 // forward ref record.
988 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
989 I = ForwardRefVals.find(Name);
990 if (I != ForwardRefVals.end())
991 Val = I->second.first;
994 // If we have the value in the symbol table or fwd-ref table, return it.
996 if (Val->getType() == Ty) return Val;
997 Error(Loc, "'@" + Name + "' defined with type '" +
998 getTypeString(Val->getType()) + "'");
1002 // Otherwise, create a new forward reference for this value and remember it.
1003 GlobalValue *FwdVal;
1004 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1005 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1007 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1008 GlobalValue::ExternalWeakLinkage, 0, Name,
1009 0, GlobalVariable::NotThreadLocal,
1010 PTy->getAddressSpace());
1012 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1016 GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1017 PointerType *PTy = dyn_cast<PointerType>(Ty);
1019 Error(Loc, "global variable reference must have pointer type");
1023 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1025 // If this is a forward reference for the value, see if we already created a
1026 // forward ref record.
1028 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1029 I = ForwardRefValIDs.find(ID);
1030 if (I != ForwardRefValIDs.end())
1031 Val = I->second.first;
1034 // If we have the value in the symbol table or fwd-ref table, return it.
1036 if (Val->getType() == Ty) return Val;
1037 Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1038 getTypeString(Val->getType()) + "'");
1042 // Otherwise, create a new forward reference for this value and remember it.
1043 GlobalValue *FwdVal;
1044 if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1045 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1047 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1048 GlobalValue::ExternalWeakLinkage, 0, "");
1050 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1055 //===----------------------------------------------------------------------===//
1057 //===----------------------------------------------------------------------===//
1059 /// ParseToken - If the current token has the specified kind, eat it and return
1060 /// success. Otherwise, emit the specified error and return failure.
1061 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1062 if (Lex.getKind() != T)
1063 return TokError(ErrMsg);
1068 /// ParseStringConstant
1069 /// ::= StringConstant
1070 bool LLParser::ParseStringConstant(std::string &Result) {
1071 if (Lex.getKind() != lltok::StringConstant)
1072 return TokError("expected string constant");
1073 Result = Lex.getStrVal();
1080 bool LLParser::ParseUInt32(unsigned &Val) {
1081 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1082 return TokError("expected integer");
1083 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1084 if (Val64 != unsigned(Val64))
1085 return TokError("expected 32-bit integer (too large)");
1092 /// := 'localdynamic'
1093 /// := 'initialexec'
1095 bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1096 switch (Lex.getKind()) {
1098 return TokError("expected localdynamic, initialexec or localexec");
1099 case lltok::kw_localdynamic:
1100 TLM = GlobalVariable::LocalDynamicTLSModel;
1102 case lltok::kw_initialexec:
1103 TLM = GlobalVariable::InitialExecTLSModel;
1105 case lltok::kw_localexec:
1106 TLM = GlobalVariable::LocalExecTLSModel;
1114 /// ParseOptionalThreadLocal
1116 /// := 'thread_local'
1117 /// := 'thread_local' '(' tlsmodel ')'
1118 bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1119 TLM = GlobalVariable::NotThreadLocal;
1120 if (!EatIfPresent(lltok::kw_thread_local))
1123 TLM = GlobalVariable::GeneralDynamicTLSModel;
1124 if (Lex.getKind() == lltok::lparen) {
1126 return ParseTLSModel(TLM) ||
1127 ParseToken(lltok::rparen, "expected ')' after thread local model");
1132 /// ParseOptionalAddrSpace
1134 /// := 'addrspace' '(' uint32 ')'
1135 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1137 if (!EatIfPresent(lltok::kw_addrspace))
1139 return ParseToken(lltok::lparen, "expected '(' in address space") ||
1140 ParseUInt32(AddrSpace) ||
1141 ParseToken(lltok::rparen, "expected ')' in address space");
1144 /// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1145 bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1146 bool HaveError = false;
1151 lltok::Kind Token = Lex.getKind();
1153 default: // End of attributes.
1155 case lltok::kw_align: {
1157 if (ParseOptionalAlignment(Alignment))
1159 B.addAlignmentAttr(Alignment);
1162 case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1163 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1164 case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1165 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1166 case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1167 case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1168 case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1169 case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1170 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1171 case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1172 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1174 case lltok::kw_alignstack:
1175 case lltok::kw_alwaysinline:
1176 case lltok::kw_builtin:
1177 case lltok::kw_inlinehint:
1178 case lltok::kw_minsize:
1179 case lltok::kw_naked:
1180 case lltok::kw_nobuiltin:
1181 case lltok::kw_noduplicate:
1182 case lltok::kw_noimplicitfloat:
1183 case lltok::kw_noinline:
1184 case lltok::kw_nonlazybind:
1185 case lltok::kw_noredzone:
1186 case lltok::kw_noreturn:
1187 case lltok::kw_nounwind:
1188 case lltok::kw_optnone:
1189 case lltok::kw_optsize:
1190 case lltok::kw_returns_twice:
1191 case lltok::kw_sanitize_address:
1192 case lltok::kw_sanitize_memory:
1193 case lltok::kw_sanitize_thread:
1195 case lltok::kw_sspreq:
1196 case lltok::kw_sspstrong:
1197 case lltok::kw_uwtable:
1198 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1206 /// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1207 bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1208 bool HaveError = false;
1213 lltok::Kind Token = Lex.getKind();
1215 default: // End of attributes.
1217 case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1218 case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1219 case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1220 case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1223 case lltok::kw_align:
1224 case lltok::kw_byval:
1225 case lltok::kw_nest:
1226 case lltok::kw_nocapture:
1227 case lltok::kw_returned:
1228 case lltok::kw_sret:
1229 HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1232 case lltok::kw_alignstack:
1233 case lltok::kw_alwaysinline:
1234 case lltok::kw_builtin:
1235 case lltok::kw_cold:
1236 case lltok::kw_inlinehint:
1237 case lltok::kw_minsize:
1238 case lltok::kw_naked:
1239 case lltok::kw_nobuiltin:
1240 case lltok::kw_noduplicate:
1241 case lltok::kw_noimplicitfloat:
1242 case lltok::kw_noinline:
1243 case lltok::kw_nonlazybind:
1244 case lltok::kw_noredzone:
1245 case lltok::kw_noreturn:
1246 case lltok::kw_nounwind:
1247 case lltok::kw_optnone:
1248 case lltok::kw_optsize:
1249 case lltok::kw_returns_twice:
1250 case lltok::kw_sanitize_address:
1251 case lltok::kw_sanitize_memory:
1252 case lltok::kw_sanitize_thread:
1254 case lltok::kw_sspreq:
1255 case lltok::kw_sspstrong:
1256 case lltok::kw_uwtable:
1257 HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1260 case lltok::kw_readnone:
1261 case lltok::kw_readonly:
1262 HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1269 /// ParseOptionalLinkage
1272 /// ::= 'linker_private'
1273 /// ::= 'linker_private_weak'
1278 /// ::= 'linkonce_odr'
1279 /// ::= 'linkonce_odr_auto_hide'
1280 /// ::= 'available_externally'
1285 /// ::= 'extern_weak'
1287 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1289 switch (Lex.getKind()) {
1290 default: Res=GlobalValue::ExternalLinkage; return false;
1291 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1292 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
1293 case lltok::kw_linker_private_weak:
1294 Res = GlobalValue::LinkerPrivateWeakLinkage;
1296 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1297 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1298 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1299 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1300 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1301 case lltok::kw_linkonce_odr_auto_hide:
1302 case lltok::kw_linker_private_weak_def_auto: // FIXME: For backwards compat.
1303 Res = GlobalValue::LinkOnceODRAutoHideLinkage;
1305 case lltok::kw_available_externally:
1306 Res = GlobalValue::AvailableExternallyLinkage;
1308 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1309 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
1310 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1311 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
1312 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1313 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1320 /// ParseOptionalVisibility
1326 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1327 switch (Lex.getKind()) {
1328 default: Res = GlobalValue::DefaultVisibility; return false;
1329 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1330 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1331 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1337 /// ParseOptionalCallingConv
1341 /// ::= 'kw_intel_ocl_bicc'
1343 /// ::= 'x86_stdcallcc'
1344 /// ::= 'x86_fastcallcc'
1345 /// ::= 'x86_thiscallcc'
1346 /// ::= 'arm_apcscc'
1347 /// ::= 'arm_aapcscc'
1348 /// ::= 'arm_aapcs_vfpcc'
1349 /// ::= 'msp430_intrcc'
1350 /// ::= 'ptx_kernel'
1351 /// ::= 'ptx_device'
1353 /// ::= 'spir_kernel'
1354 /// ::= 'x86_64_sysvcc'
1355 /// ::= 'x86_64_win64cc'
1358 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
1359 switch (Lex.getKind()) {
1360 default: CC = CallingConv::C; return false;
1361 case lltok::kw_ccc: CC = CallingConv::C; break;
1362 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1363 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1364 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1365 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1366 case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1367 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1368 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1369 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1370 case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1371 case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1372 case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1373 case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1374 case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1375 case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1376 case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1377 case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1378 case lltok::kw_cc: {
1379 unsigned ArbitraryCC;
1381 if (ParseUInt32(ArbitraryCC))
1383 CC = static_cast<CallingConv::ID>(ArbitraryCC);
1392 /// ParseInstructionMetadata
1393 /// ::= !dbg !42 (',' !dbg !57)*
1394 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
1395 PerFunctionState *PFS) {
1397 if (Lex.getKind() != lltok::MetadataVar)
1398 return TokError("expected metadata after comma");
1400 std::string Name = Lex.getStrVal();
1401 unsigned MDK = M->getMDKindID(Name);
1405 SMLoc Loc = Lex.getLoc();
1407 if (ParseToken(lltok::exclaim, "expected '!' here"))
1410 // This code is similar to that of ParseMetadataValue, however it needs to
1411 // have special-case code for a forward reference; see the comments on
1412 // ForwardRefInstMetadata for details. Also, MDStrings are not supported
1413 // at the top level here.
1414 if (Lex.getKind() == lltok::lbrace) {
1416 if (ParseMetadataListValue(ID, PFS))
1418 assert(ID.Kind == ValID::t_MDNode);
1419 Inst->setMetadata(MDK, ID.MDNodeVal);
1421 unsigned NodeID = 0;
1422 if (ParseMDNodeID(Node, NodeID))
1425 // If we got the node, add it to the instruction.
1426 Inst->setMetadata(MDK, Node);
1428 MDRef R = { Loc, MDK, NodeID };
1429 // Otherwise, remember that this should be resolved later.
1430 ForwardRefInstMetadata[Inst].push_back(R);
1434 if (MDK == LLVMContext::MD_tbaa)
1435 InstsWithTBAATag.push_back(Inst);
1437 // If this is the end of the list, we're done.
1438 } while (EatIfPresent(lltok::comma));
1442 /// ParseOptionalAlignment
1445 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1447 if (!EatIfPresent(lltok::kw_align))
1449 LocTy AlignLoc = Lex.getLoc();
1450 if (ParseUInt32(Alignment)) return true;
1451 if (!isPowerOf2_32(Alignment))
1452 return Error(AlignLoc, "alignment is not a power of two");
1453 if (Alignment > Value::MaximumAlignment)
1454 return Error(AlignLoc, "huge alignments are not supported yet");
1458 /// ParseOptionalCommaAlign
1462 /// This returns with AteExtraComma set to true if it ate an excess comma at the
1464 bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1465 bool &AteExtraComma) {
1466 AteExtraComma = false;
1467 while (EatIfPresent(lltok::comma)) {
1468 // Metadata at the end is an early exit.
1469 if (Lex.getKind() == lltok::MetadataVar) {
1470 AteExtraComma = true;
1474 if (Lex.getKind() != lltok::kw_align)
1475 return Error(Lex.getLoc(), "expected metadata or 'align'");
1477 if (ParseOptionalAlignment(Alignment)) return true;
1483 /// ParseScopeAndOrdering
1484 /// if isAtomic: ::= 'singlethread'? AtomicOrdering
1487 /// This sets Scope and Ordering to the parsed values.
1488 bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1489 AtomicOrdering &Ordering) {
1493 Scope = CrossThread;
1494 if (EatIfPresent(lltok::kw_singlethread))
1495 Scope = SingleThread;
1496 switch (Lex.getKind()) {
1497 default: return TokError("Expected ordering on atomic instruction");
1498 case lltok::kw_unordered: Ordering = Unordered; break;
1499 case lltok::kw_monotonic: Ordering = Monotonic; break;
1500 case lltok::kw_acquire: Ordering = Acquire; break;
1501 case lltok::kw_release: Ordering = Release; break;
1502 case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1503 case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1509 /// ParseOptionalStackAlignment
1511 /// ::= 'alignstack' '(' 4 ')'
1512 bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1514 if (!EatIfPresent(lltok::kw_alignstack))
1516 LocTy ParenLoc = Lex.getLoc();
1517 if (!EatIfPresent(lltok::lparen))
1518 return Error(ParenLoc, "expected '('");
1519 LocTy AlignLoc = Lex.getLoc();
1520 if (ParseUInt32(Alignment)) return true;
1521 ParenLoc = Lex.getLoc();
1522 if (!EatIfPresent(lltok::rparen))
1523 return Error(ParenLoc, "expected ')'");
1524 if (!isPowerOf2_32(Alignment))
1525 return Error(AlignLoc, "stack alignment is not a power of two");
1529 /// ParseIndexList - This parses the index list for an insert/extractvalue
1530 /// instruction. This sets AteExtraComma in the case where we eat an extra
1531 /// comma at the end of the line and find that it is followed by metadata.
1532 /// Clients that don't allow metadata can call the version of this function that
1533 /// only takes one argument.
1536 /// ::= (',' uint32)+
1538 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1539 bool &AteExtraComma) {
1540 AteExtraComma = false;
1542 if (Lex.getKind() != lltok::comma)
1543 return TokError("expected ',' as start of index list");
1545 while (EatIfPresent(lltok::comma)) {
1546 if (Lex.getKind() == lltok::MetadataVar) {
1547 AteExtraComma = true;
1551 if (ParseUInt32(Idx)) return true;
1552 Indices.push_back(Idx);
1558 //===----------------------------------------------------------------------===//
1560 //===----------------------------------------------------------------------===//
1562 /// ParseType - Parse a type.
1563 bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
1564 SMLoc TypeLoc = Lex.getLoc();
1565 switch (Lex.getKind()) {
1567 return TokError("expected type");
1569 // Type ::= 'float' | 'void' (etc)
1570 Result = Lex.getTyVal();
1574 // Type ::= StructType
1575 if (ParseAnonStructType(Result, false))
1578 case lltok::lsquare:
1579 // Type ::= '[' ... ']'
1580 Lex.Lex(); // eat the lsquare.
1581 if (ParseArrayVectorType(Result, false))
1584 case lltok::less: // Either vector or packed struct.
1585 // Type ::= '<' ... '>'
1587 if (Lex.getKind() == lltok::lbrace) {
1588 if (ParseAnonStructType(Result, true) ||
1589 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1591 } else if (ParseArrayVectorType(Result, true))
1594 case lltok::LocalVar: {
1596 std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1598 // If the type hasn't been defined yet, create a forward definition and
1599 // remember where that forward def'n was seen (in case it never is defined).
1600 if (Entry.first == 0) {
1601 Entry.first = StructType::create(Context, Lex.getStrVal());
1602 Entry.second = Lex.getLoc();
1604 Result = Entry.first;
1609 case lltok::LocalVarID: {
1611 if (Lex.getUIntVal() >= NumberedTypes.size())
1612 NumberedTypes.resize(Lex.getUIntVal()+1);
1613 std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1615 // If the type hasn't been defined yet, create a forward definition and
1616 // remember where that forward def'n was seen (in case it never is defined).
1617 if (Entry.first == 0) {
1618 Entry.first = StructType::create(Context);
1619 Entry.second = Lex.getLoc();
1621 Result = Entry.first;
1627 // Parse the type suffixes.
1629 switch (Lex.getKind()) {
1632 if (!AllowVoid && Result->isVoidTy())
1633 return Error(TypeLoc, "void type only allowed for function results");
1636 // Type ::= Type '*'
1638 if (Result->isLabelTy())
1639 return TokError("basic block pointers are invalid");
1640 if (Result->isVoidTy())
1641 return TokError("pointers to void are invalid - use i8* instead");
1642 if (!PointerType::isValidElementType(Result))
1643 return TokError("pointer to this type is invalid");
1644 Result = PointerType::getUnqual(Result);
1648 // Type ::= Type 'addrspace' '(' uint32 ')' '*'
1649 case lltok::kw_addrspace: {
1650 if (Result->isLabelTy())
1651 return TokError("basic block pointers are invalid");
1652 if (Result->isVoidTy())
1653 return TokError("pointers to void are invalid; use i8* instead");
1654 if (!PointerType::isValidElementType(Result))
1655 return TokError("pointer to this type is invalid");
1657 if (ParseOptionalAddrSpace(AddrSpace) ||
1658 ParseToken(lltok::star, "expected '*' in address space"))
1661 Result = PointerType::get(Result, AddrSpace);
1665 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1667 if (ParseFunctionType(Result))
1674 /// ParseParameterList
1676 /// ::= '(' Arg (',' Arg)* ')'
1678 /// ::= Type OptionalAttributes Value OptionalAttributes
1679 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1680 PerFunctionState &PFS) {
1681 if (ParseToken(lltok::lparen, "expected '(' in call"))
1684 unsigned AttrIndex = 1;
1685 while (Lex.getKind() != lltok::rparen) {
1686 // If this isn't the first argument, we need a comma.
1687 if (!ArgList.empty() &&
1688 ParseToken(lltok::comma, "expected ',' in argument list"))
1691 // Parse the argument.
1694 AttrBuilder ArgAttrs;
1696 if (ParseType(ArgTy, ArgLoc))
1699 // Otherwise, handle normal operands.
1700 if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1702 ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1707 Lex.Lex(); // Lex the ')'.
1713 /// ParseArgumentList - Parse the argument list for a function type or function
1715 /// ::= '(' ArgTypeListI ')'
1719 /// ::= ArgTypeList ',' '...'
1720 /// ::= ArgType (',' ArgType)*
1722 bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1725 assert(Lex.getKind() == lltok::lparen);
1726 Lex.Lex(); // eat the (.
1728 if (Lex.getKind() == lltok::rparen) {
1730 } else if (Lex.getKind() == lltok::dotdotdot) {
1734 LocTy TypeLoc = Lex.getLoc();
1739 if (ParseType(ArgTy) ||
1740 ParseOptionalParamAttrs(Attrs)) return true;
1742 if (ArgTy->isVoidTy())
1743 return Error(TypeLoc, "argument can not have void type");
1745 if (Lex.getKind() == lltok::LocalVar) {
1746 Name = Lex.getStrVal();
1750 if (!FunctionType::isValidArgumentType(ArgTy))
1751 return Error(TypeLoc, "invalid type for function argument");
1753 unsigned AttrIndex = 1;
1754 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1755 AttributeSet::get(ArgTy->getContext(),
1756 AttrIndex++, Attrs), Name));
1758 while (EatIfPresent(lltok::comma)) {
1759 // Handle ... at end of arg list.
1760 if (EatIfPresent(lltok::dotdotdot)) {
1765 // Otherwise must be an argument type.
1766 TypeLoc = Lex.getLoc();
1767 if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1769 if (ArgTy->isVoidTy())
1770 return Error(TypeLoc, "argument can not have void type");
1772 if (Lex.getKind() == lltok::LocalVar) {
1773 Name = Lex.getStrVal();
1779 if (!ArgTy->isFirstClassType())
1780 return Error(TypeLoc, "invalid type for function argument");
1782 ArgList.push_back(ArgInfo(TypeLoc, ArgTy,
1783 AttributeSet::get(ArgTy->getContext(),
1784 AttrIndex++, Attrs),
1789 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1792 /// ParseFunctionType
1793 /// ::= Type ArgumentList OptionalAttrs
1794 bool LLParser::ParseFunctionType(Type *&Result) {
1795 assert(Lex.getKind() == lltok::lparen);
1797 if (!FunctionType::isValidReturnType(Result))
1798 return TokError("invalid function return type");
1800 SmallVector<ArgInfo, 8> ArgList;
1802 if (ParseArgumentList(ArgList, isVarArg))
1805 // Reject names on the arguments lists.
1806 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1807 if (!ArgList[i].Name.empty())
1808 return Error(ArgList[i].Loc, "argument name invalid in function type");
1809 if (ArgList[i].Attrs.hasAttributes(i + 1))
1810 return Error(ArgList[i].Loc,
1811 "argument attributes invalid in function type");
1814 SmallVector<Type*, 16> ArgListTy;
1815 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1816 ArgListTy.push_back(ArgList[i].Ty);
1818 Result = FunctionType::get(Result, ArgListTy, isVarArg);
1822 /// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1824 bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
1825 SmallVector<Type*, 8> Elts;
1826 if (ParseStructBody(Elts)) return true;
1828 Result = StructType::get(Context, Elts, Packed);
1832 /// ParseStructDefinition - Parse a struct in a 'type' definition.
1833 bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
1834 std::pair<Type*, LocTy> &Entry,
1836 // If the type was already defined, diagnose the redefinition.
1837 if (Entry.first && !Entry.second.isValid())
1838 return Error(TypeLoc, "redefinition of type");
1840 // If we have opaque, just return without filling in the definition for the
1841 // struct. This counts as a definition as far as the .ll file goes.
1842 if (EatIfPresent(lltok::kw_opaque)) {
1843 // This type is being defined, so clear the location to indicate this.
1844 Entry.second = SMLoc();
1846 // If this type number has never been uttered, create it.
1847 if (Entry.first == 0)
1848 Entry.first = StructType::create(Context, Name);
1849 ResultTy = Entry.first;
1853 // If the type starts with '<', then it is either a packed struct or a vector.
1854 bool isPacked = EatIfPresent(lltok::less);
1856 // If we don't have a struct, then we have a random type alias, which we
1857 // accept for compatibility with old files. These types are not allowed to be
1858 // forward referenced and not allowed to be recursive.
1859 if (Lex.getKind() != lltok::lbrace) {
1861 return Error(TypeLoc, "forward references to non-struct type");
1865 return ParseArrayVectorType(ResultTy, true);
1866 return ParseType(ResultTy);
1869 // This type is being defined, so clear the location to indicate this.
1870 Entry.second = SMLoc();
1872 // If this type number has never been uttered, create it.
1873 if (Entry.first == 0)
1874 Entry.first = StructType::create(Context, Name);
1876 StructType *STy = cast<StructType>(Entry.first);
1878 SmallVector<Type*, 8> Body;
1879 if (ParseStructBody(Body) ||
1880 (isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
1883 STy->setBody(Body, isPacked);
1889 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1892 /// ::= '{' Type (',' Type)* '}'
1893 /// ::= '<' '{' '}' '>'
1894 /// ::= '<' '{' Type (',' Type)* '}' '>'
1895 bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
1896 assert(Lex.getKind() == lltok::lbrace);
1897 Lex.Lex(); // Consume the '{'
1899 // Handle the empty struct.
1900 if (EatIfPresent(lltok::rbrace))
1903 LocTy EltTyLoc = Lex.getLoc();
1905 if (ParseType(Ty)) return true;
1908 if (!StructType::isValidElementType(Ty))
1909 return Error(EltTyLoc, "invalid element type for struct");
1911 while (EatIfPresent(lltok::comma)) {
1912 EltTyLoc = Lex.getLoc();
1913 if (ParseType(Ty)) return true;
1915 if (!StructType::isValidElementType(Ty))
1916 return Error(EltTyLoc, "invalid element type for struct");
1921 return ParseToken(lltok::rbrace, "expected '}' at end of struct");
1924 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1925 /// token has already been consumed.
1927 /// ::= '[' APSINTVAL 'x' Types ']'
1928 /// ::= '<' APSINTVAL 'x' Types '>'
1929 bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
1930 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1931 Lex.getAPSIntVal().getBitWidth() > 64)
1932 return TokError("expected number in address space");
1934 LocTy SizeLoc = Lex.getLoc();
1935 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1938 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1941 LocTy TypeLoc = Lex.getLoc();
1943 if (ParseType(EltTy)) return true;
1945 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1946 "expected end of sequential type"))
1951 return Error(SizeLoc, "zero element vector is illegal");
1952 if ((unsigned)Size != Size)
1953 return Error(SizeLoc, "size too large for vector");
1954 if (!VectorType::isValidElementType(EltTy))
1955 return Error(TypeLoc, "invalid vector element type");
1956 Result = VectorType::get(EltTy, unsigned(Size));
1958 if (!ArrayType::isValidElementType(EltTy))
1959 return Error(TypeLoc, "invalid array element type");
1960 Result = ArrayType::get(EltTy, Size);
1965 //===----------------------------------------------------------------------===//
1966 // Function Semantic Analysis.
1967 //===----------------------------------------------------------------------===//
1969 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
1971 : P(p), F(f), FunctionNumber(functionNumber) {
1973 // Insert unnamed arguments into the NumberedVals list.
1974 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1977 NumberedVals.push_back(AI);
1980 LLParser::PerFunctionState::~PerFunctionState() {
1981 // If there were any forward referenced non-basicblock values, delete them.
1982 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1983 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1984 if (!isa<BasicBlock>(I->second.first)) {
1985 I->second.first->replaceAllUsesWith(
1986 UndefValue::get(I->second.first->getType()));
1987 delete I->second.first;
1988 I->second.first = 0;
1991 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1992 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1993 if (!isa<BasicBlock>(I->second.first)) {
1994 I->second.first->replaceAllUsesWith(
1995 UndefValue::get(I->second.first->getType()));
1996 delete I->second.first;
1997 I->second.first = 0;
2001 bool LLParser::PerFunctionState::FinishFunction() {
2002 // Check to see if someone took the address of labels in this block.
2003 if (!P.ForwardRefBlockAddresses.empty()) {
2005 if (!F.getName().empty()) {
2006 FunctionID.Kind = ValID::t_GlobalName;
2007 FunctionID.StrVal = F.getName();
2009 FunctionID.Kind = ValID::t_GlobalID;
2010 FunctionID.UIntVal = FunctionNumber;
2013 std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
2014 FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
2015 if (FRBAI != P.ForwardRefBlockAddresses.end()) {
2016 // Resolve all these references.
2017 if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
2020 P.ForwardRefBlockAddresses.erase(FRBAI);
2024 if (!ForwardRefVals.empty())
2025 return P.Error(ForwardRefVals.begin()->second.second,
2026 "use of undefined value '%" + ForwardRefVals.begin()->first +
2028 if (!ForwardRefValIDs.empty())
2029 return P.Error(ForwardRefValIDs.begin()->second.second,
2030 "use of undefined value '%" +
2031 Twine(ForwardRefValIDs.begin()->first) + "'");
2036 /// GetVal - Get a value with the specified name or ID, creating a
2037 /// forward reference record if needed. This can return null if the value
2038 /// exists but does not have the right type.
2039 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2040 Type *Ty, LocTy Loc) {
2041 // Look this name up in the normal function symbol table.
2042 Value *Val = F.getValueSymbolTable().lookup(Name);
2044 // If this is a forward reference for the value, see if we already created a
2045 // forward ref record.
2047 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2048 I = ForwardRefVals.find(Name);
2049 if (I != ForwardRefVals.end())
2050 Val = I->second.first;
2053 // If we have the value in the symbol table or fwd-ref table, return it.
2055 if (Val->getType() == Ty) return Val;
2056 if (Ty->isLabelTy())
2057 P.Error(Loc, "'%" + Name + "' is not a basic block");
2059 P.Error(Loc, "'%" + Name + "' defined with type '" +
2060 getTypeString(Val->getType()) + "'");
2064 // Don't make placeholders with invalid type.
2065 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2066 P.Error(Loc, "invalid use of a non-first-class type");
2070 // Otherwise, create a new forward reference for this value and remember it.
2072 if (Ty->isLabelTy())
2073 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2075 FwdVal = new Argument(Ty, Name);
2077 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2081 Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2083 // Look this name up in the normal function symbol table.
2084 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
2086 // If this is a forward reference for the value, see if we already created a
2087 // forward ref record.
2089 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2090 I = ForwardRefValIDs.find(ID);
2091 if (I != ForwardRefValIDs.end())
2092 Val = I->second.first;
2095 // If we have the value in the symbol table or fwd-ref table, return it.
2097 if (Val->getType() == Ty) return Val;
2098 if (Ty->isLabelTy())
2099 P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2101 P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2102 getTypeString(Val->getType()) + "'");
2106 if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
2107 P.Error(Loc, "invalid use of a non-first-class type");
2111 // Otherwise, create a new forward reference for this value and remember it.
2113 if (Ty->isLabelTy())
2114 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2116 FwdVal = new Argument(Ty);
2118 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2122 /// SetInstName - After an instruction is parsed and inserted into its
2123 /// basic block, this installs its name.
2124 bool LLParser::PerFunctionState::SetInstName(int NameID,
2125 const std::string &NameStr,
2126 LocTy NameLoc, Instruction *Inst) {
2127 // If this instruction has void type, it cannot have a name or ID specified.
2128 if (Inst->getType()->isVoidTy()) {
2129 if (NameID != -1 || !NameStr.empty())
2130 return P.Error(NameLoc, "instructions returning void cannot have a name");
2134 // If this was a numbered instruction, verify that the instruction is the
2135 // expected value and resolve any forward references.
2136 if (NameStr.empty()) {
2137 // If neither a name nor an ID was specified, just use the next ID.
2139 NameID = NumberedVals.size();
2141 if (unsigned(NameID) != NumberedVals.size())
2142 return P.Error(NameLoc, "instruction expected to be numbered '%" +
2143 Twine(NumberedVals.size()) + "'");
2145 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2146 ForwardRefValIDs.find(NameID);
2147 if (FI != ForwardRefValIDs.end()) {
2148 if (FI->second.first->getType() != Inst->getType())
2149 return P.Error(NameLoc, "instruction forward referenced with type '" +
2150 getTypeString(FI->second.first->getType()) + "'");
2151 FI->second.first->replaceAllUsesWith(Inst);
2152 delete FI->second.first;
2153 ForwardRefValIDs.erase(FI);
2156 NumberedVals.push_back(Inst);
2160 // Otherwise, the instruction had a name. Resolve forward refs and set it.
2161 std::map<std::string, std::pair<Value*, LocTy> >::iterator
2162 FI = ForwardRefVals.find(NameStr);
2163 if (FI != ForwardRefVals.end()) {
2164 if (FI->second.first->getType() != Inst->getType())
2165 return P.Error(NameLoc, "instruction forward referenced with type '" +
2166 getTypeString(FI->second.first->getType()) + "'");
2167 FI->second.first->replaceAllUsesWith(Inst);
2168 delete FI->second.first;
2169 ForwardRefVals.erase(FI);
2172 // Set the name on the instruction.
2173 Inst->setName(NameStr);
2175 if (Inst->getName() != NameStr)
2176 return P.Error(NameLoc, "multiple definition of local value named '" +
2181 /// GetBB - Get a basic block with the specified name or ID, creating a
2182 /// forward reference record if needed.
2183 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2185 return cast_or_null<BasicBlock>(GetVal(Name,
2186 Type::getLabelTy(F.getContext()), Loc));
2189 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2190 return cast_or_null<BasicBlock>(GetVal(ID,
2191 Type::getLabelTy(F.getContext()), Loc));
2194 /// DefineBB - Define the specified basic block, which is either named or
2195 /// unnamed. If there is an error, this returns null otherwise it returns
2196 /// the block being defined.
2197 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2201 BB = GetBB(NumberedVals.size(), Loc);
2203 BB = GetBB(Name, Loc);
2204 if (BB == 0) return 0; // Already diagnosed error.
2206 // Move the block to the end of the function. Forward ref'd blocks are
2207 // inserted wherever they happen to be referenced.
2208 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2210 // Remove the block from forward ref sets.
2212 ForwardRefValIDs.erase(NumberedVals.size());
2213 NumberedVals.push_back(BB);
2215 // BB forward references are already in the function symbol table.
2216 ForwardRefVals.erase(Name);
2222 //===----------------------------------------------------------------------===//
2224 //===----------------------------------------------------------------------===//
2226 /// ParseValID - Parse an abstract value that doesn't necessarily have a
2227 /// type implied. For example, if we parse "4" we don't know what integer type
2228 /// it has. The value will later be combined with its type and checked for
2229 /// sanity. PFS is used to convert function-local operands of metadata (since
2230 /// metadata operands are not just parsed here but also converted to values).
2231 /// PFS can be null when we are not parsing metadata values inside a function.
2232 bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2233 ID.Loc = Lex.getLoc();
2234 switch (Lex.getKind()) {
2235 default: return TokError("expected value token");
2236 case lltok::GlobalID: // @42
2237 ID.UIntVal = Lex.getUIntVal();
2238 ID.Kind = ValID::t_GlobalID;
2240 case lltok::GlobalVar: // @foo
2241 ID.StrVal = Lex.getStrVal();
2242 ID.Kind = ValID::t_GlobalName;
2244 case lltok::LocalVarID: // %42
2245 ID.UIntVal = Lex.getUIntVal();
2246 ID.Kind = ValID::t_LocalID;
2248 case lltok::LocalVar: // %foo
2249 ID.StrVal = Lex.getStrVal();
2250 ID.Kind = ValID::t_LocalName;
2252 case lltok::exclaim: // !42, !{...}, or !"foo"
2253 return ParseMetadataValue(ID, PFS);
2255 ID.APSIntVal = Lex.getAPSIntVal();
2256 ID.Kind = ValID::t_APSInt;
2258 case lltok::APFloat:
2259 ID.APFloatVal = Lex.getAPFloatVal();
2260 ID.Kind = ValID::t_APFloat;
2262 case lltok::kw_true:
2263 ID.ConstantVal = ConstantInt::getTrue(Context);
2264 ID.Kind = ValID::t_Constant;
2266 case lltok::kw_false:
2267 ID.ConstantVal = ConstantInt::getFalse(Context);
2268 ID.Kind = ValID::t_Constant;
2270 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2271 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2272 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2274 case lltok::lbrace: {
2275 // ValID ::= '{' ConstVector '}'
2277 SmallVector<Constant*, 16> Elts;
2278 if (ParseGlobalValueVector(Elts) ||
2279 ParseToken(lltok::rbrace, "expected end of struct constant"))
2282 ID.ConstantStructElts = new Constant*[Elts.size()];
2283 ID.UIntVal = Elts.size();
2284 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2285 ID.Kind = ValID::t_ConstantStruct;
2289 // ValID ::= '<' ConstVector '>' --> Vector.
2290 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2292 bool isPackedStruct = EatIfPresent(lltok::lbrace);
2294 SmallVector<Constant*, 16> Elts;
2295 LocTy FirstEltLoc = Lex.getLoc();
2296 if (ParseGlobalValueVector(Elts) ||
2298 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2299 ParseToken(lltok::greater, "expected end of constant"))
2302 if (isPackedStruct) {
2303 ID.ConstantStructElts = new Constant*[Elts.size()];
2304 memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2305 ID.UIntVal = Elts.size();
2306 ID.Kind = ValID::t_PackedConstantStruct;
2311 return Error(ID.Loc, "constant vector must not be empty");
2313 if (!Elts[0]->getType()->isIntegerTy() &&
2314 !Elts[0]->getType()->isFloatingPointTy() &&
2315 !Elts[0]->getType()->isPointerTy())
2316 return Error(FirstEltLoc,
2317 "vector elements must have integer, pointer or floating point type");
2319 // Verify that all the vector elements have the same type.
2320 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2321 if (Elts[i]->getType() != Elts[0]->getType())
2322 return Error(FirstEltLoc,
2323 "vector element #" + Twine(i) +
2324 " is not of type '" + getTypeString(Elts[0]->getType()));
2326 ID.ConstantVal = ConstantVector::get(Elts);
2327 ID.Kind = ValID::t_Constant;
2330 case lltok::lsquare: { // Array Constant
2332 SmallVector<Constant*, 16> Elts;
2333 LocTy FirstEltLoc = Lex.getLoc();
2334 if (ParseGlobalValueVector(Elts) ||
2335 ParseToken(lltok::rsquare, "expected end of array constant"))
2338 // Handle empty element.
2340 // Use undef instead of an array because it's inconvenient to determine
2341 // the element type at this point, there being no elements to examine.
2342 ID.Kind = ValID::t_EmptyArray;
2346 if (!Elts[0]->getType()->isFirstClassType())
2347 return Error(FirstEltLoc, "invalid array element type: " +
2348 getTypeString(Elts[0]->getType()));
2350 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2352 // Verify all elements are correct type!
2353 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2354 if (Elts[i]->getType() != Elts[0]->getType())
2355 return Error(FirstEltLoc,
2356 "array element #" + Twine(i) +
2357 " is not of type '" + getTypeString(Elts[0]->getType()));
2360 ID.ConstantVal = ConstantArray::get(ATy, Elts);
2361 ID.Kind = ValID::t_Constant;
2364 case lltok::kw_c: // c "foo"
2366 ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2368 if (ParseToken(lltok::StringConstant, "expected string")) return true;
2369 ID.Kind = ValID::t_Constant;
2372 case lltok::kw_asm: {
2373 // ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2375 bool HasSideEffect, AlignStack, AsmDialect;
2377 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2378 ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2379 ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2380 ParseStringConstant(ID.StrVal) ||
2381 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2382 ParseToken(lltok::StringConstant, "expected constraint string"))
2384 ID.StrVal2 = Lex.getStrVal();
2385 ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2386 (unsigned(AsmDialect)<<2);
2387 ID.Kind = ValID::t_InlineAsm;
2391 case lltok::kw_blockaddress: {
2392 // ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2396 LocTy FnLoc, LabelLoc;
2398 if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2400 ParseToken(lltok::comma, "expected comma in block address expression")||
2401 ParseValID(Label) ||
2402 ParseToken(lltok::rparen, "expected ')' in block address expression"))
2405 if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2406 return Error(Fn.Loc, "expected function name in blockaddress");
2407 if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2408 return Error(Label.Loc, "expected basic block name in blockaddress");
2410 // Make a global variable as a placeholder for this reference.
2411 GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
2412 false, GlobalValue::InternalLinkage,
2414 ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
2415 ID.ConstantVal = FwdRef;
2416 ID.Kind = ValID::t_Constant;
2420 case lltok::kw_trunc:
2421 case lltok::kw_zext:
2422 case lltok::kw_sext:
2423 case lltok::kw_fptrunc:
2424 case lltok::kw_fpext:
2425 case lltok::kw_bitcast:
2426 case lltok::kw_uitofp:
2427 case lltok::kw_sitofp:
2428 case lltok::kw_fptoui:
2429 case lltok::kw_fptosi:
2430 case lltok::kw_inttoptr:
2431 case lltok::kw_ptrtoint: {
2432 unsigned Opc = Lex.getUIntVal();
2436 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2437 ParseGlobalTypeAndValue(SrcVal) ||
2438 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2439 ParseType(DestTy) ||
2440 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2442 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2443 return Error(ID.Loc, "invalid cast opcode for cast from '" +
2444 getTypeString(SrcVal->getType()) + "' to '" +
2445 getTypeString(DestTy) + "'");
2446 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2448 ID.Kind = ValID::t_Constant;
2451 case lltok::kw_extractvalue: {
2454 SmallVector<unsigned, 4> Indices;
2455 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2456 ParseGlobalTypeAndValue(Val) ||
2457 ParseIndexList(Indices) ||
2458 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2461 if (!Val->getType()->isAggregateType())
2462 return Error(ID.Loc, "extractvalue operand must be aggregate type");
2463 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2464 return Error(ID.Loc, "invalid indices for extractvalue");
2465 ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2466 ID.Kind = ValID::t_Constant;
2469 case lltok::kw_insertvalue: {
2471 Constant *Val0, *Val1;
2472 SmallVector<unsigned, 4> Indices;
2473 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2474 ParseGlobalTypeAndValue(Val0) ||
2475 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2476 ParseGlobalTypeAndValue(Val1) ||
2477 ParseIndexList(Indices) ||
2478 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2480 if (!Val0->getType()->isAggregateType())
2481 return Error(ID.Loc, "insertvalue operand must be aggregate type");
2482 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
2483 return Error(ID.Loc, "invalid indices for insertvalue");
2484 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2485 ID.Kind = ValID::t_Constant;
2488 case lltok::kw_icmp:
2489 case lltok::kw_fcmp: {
2490 unsigned PredVal, Opc = Lex.getUIntVal();
2491 Constant *Val0, *Val1;
2493 if (ParseCmpPredicate(PredVal, Opc) ||
2494 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2495 ParseGlobalTypeAndValue(Val0) ||
2496 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2497 ParseGlobalTypeAndValue(Val1) ||
2498 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2501 if (Val0->getType() != Val1->getType())
2502 return Error(ID.Loc, "compare operands must have the same type");
2504 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2506 if (Opc == Instruction::FCmp) {
2507 if (!Val0->getType()->isFPOrFPVectorTy())
2508 return Error(ID.Loc, "fcmp requires floating point operands");
2509 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2511 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2512 if (!Val0->getType()->isIntOrIntVectorTy() &&
2513 !Val0->getType()->getScalarType()->isPointerTy())
2514 return Error(ID.Loc, "icmp requires pointer or integer operands");
2515 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2517 ID.Kind = ValID::t_Constant;
2521 // Binary Operators.
2523 case lltok::kw_fadd:
2525 case lltok::kw_fsub:
2527 case lltok::kw_fmul:
2528 case lltok::kw_udiv:
2529 case lltok::kw_sdiv:
2530 case lltok::kw_fdiv:
2531 case lltok::kw_urem:
2532 case lltok::kw_srem:
2533 case lltok::kw_frem:
2535 case lltok::kw_lshr:
2536 case lltok::kw_ashr: {
2540 unsigned Opc = Lex.getUIntVal();
2541 Constant *Val0, *Val1;
2543 LocTy ModifierLoc = Lex.getLoc();
2544 if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2545 Opc == Instruction::Mul || Opc == Instruction::Shl) {
2546 if (EatIfPresent(lltok::kw_nuw))
2548 if (EatIfPresent(lltok::kw_nsw)) {
2550 if (EatIfPresent(lltok::kw_nuw))
2553 } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2554 Opc == Instruction::LShr || Opc == Instruction::AShr) {
2555 if (EatIfPresent(lltok::kw_exact))
2558 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2559 ParseGlobalTypeAndValue(Val0) ||
2560 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2561 ParseGlobalTypeAndValue(Val1) ||
2562 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2564 if (Val0->getType() != Val1->getType())
2565 return Error(ID.Loc, "operands of constexpr must have same type");
2566 if (!Val0->getType()->isIntOrIntVectorTy()) {
2568 return Error(ModifierLoc, "nuw only applies to integer operations");
2570 return Error(ModifierLoc, "nsw only applies to integer operations");
2572 // Check that the type is valid for the operator.
2574 case Instruction::Add:
2575 case Instruction::Sub:
2576 case Instruction::Mul:
2577 case Instruction::UDiv:
2578 case Instruction::SDiv:
2579 case Instruction::URem:
2580 case Instruction::SRem:
2581 case Instruction::Shl:
2582 case Instruction::AShr:
2583 case Instruction::LShr:
2584 if (!Val0->getType()->isIntOrIntVectorTy())
2585 return Error(ID.Loc, "constexpr requires integer operands");
2587 case Instruction::FAdd:
2588 case Instruction::FSub:
2589 case Instruction::FMul:
2590 case Instruction::FDiv:
2591 case Instruction::FRem:
2592 if (!Val0->getType()->isFPOrFPVectorTy())
2593 return Error(ID.Loc, "constexpr requires fp operands");
2595 default: llvm_unreachable("Unknown binary operator!");
2598 if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2599 if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2600 if (Exact) Flags |= PossiblyExactOperator::IsExact;
2601 Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2603 ID.Kind = ValID::t_Constant;
2607 // Logical Operations
2610 case lltok::kw_xor: {
2611 unsigned Opc = Lex.getUIntVal();
2612 Constant *Val0, *Val1;
2614 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2615 ParseGlobalTypeAndValue(Val0) ||
2616 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2617 ParseGlobalTypeAndValue(Val1) ||
2618 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2620 if (Val0->getType() != Val1->getType())
2621 return Error(ID.Loc, "operands of constexpr must have same type");
2622 if (!Val0->getType()->isIntOrIntVectorTy())
2623 return Error(ID.Loc,
2624 "constexpr requires integer or integer vector operands");
2625 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2626 ID.Kind = ValID::t_Constant;
2630 case lltok::kw_getelementptr:
2631 case lltok::kw_shufflevector:
2632 case lltok::kw_insertelement:
2633 case lltok::kw_extractelement:
2634 case lltok::kw_select: {
2635 unsigned Opc = Lex.getUIntVal();
2636 SmallVector<Constant*, 16> Elts;
2637 bool InBounds = false;
2639 if (Opc == Instruction::GetElementPtr)
2640 InBounds = EatIfPresent(lltok::kw_inbounds);
2641 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2642 ParseGlobalValueVector(Elts) ||
2643 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2646 if (Opc == Instruction::GetElementPtr) {
2647 if (Elts.size() == 0 ||
2648 !Elts[0]->getType()->getScalarType()->isPointerTy())
2649 return Error(ID.Loc, "getelementptr requires pointer operand");
2651 ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2652 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(), Indices))
2653 return Error(ID.Loc, "invalid indices for getelementptr");
2654 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0], Indices,
2656 } else if (Opc == Instruction::Select) {
2657 if (Elts.size() != 3)
2658 return Error(ID.Loc, "expected three operands to select");
2659 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2661 return Error(ID.Loc, Reason);
2662 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2663 } else if (Opc == Instruction::ShuffleVector) {
2664 if (Elts.size() != 3)
2665 return Error(ID.Loc, "expected three operands to shufflevector");
2666 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2667 return Error(ID.Loc, "invalid operands to shufflevector");
2669 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2670 } else if (Opc == Instruction::ExtractElement) {
2671 if (Elts.size() != 2)
2672 return Error(ID.Loc, "expected two operands to extractelement");
2673 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2674 return Error(ID.Loc, "invalid extractelement operands");
2675 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2677 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2678 if (Elts.size() != 3)
2679 return Error(ID.Loc, "expected three operands to insertelement");
2680 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2681 return Error(ID.Loc, "invalid insertelement operands");
2683 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2686 ID.Kind = ValID::t_Constant;
2695 /// ParseGlobalValue - Parse a global value with the specified type.
2696 bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2700 bool Parsed = ParseValID(ID) ||
2701 ConvertValIDToValue(Ty, ID, V, NULL);
2702 if (V && !(C = dyn_cast<Constant>(V)))
2703 return Error(ID.Loc, "global values must be constants");
2707 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2709 return ParseType(Ty) ||
2710 ParseGlobalValue(Ty, V);
2713 /// ParseGlobalValueVector
2715 /// ::= TypeAndValue (',' TypeAndValue)*
2716 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2718 if (Lex.getKind() == lltok::rbrace ||
2719 Lex.getKind() == lltok::rsquare ||
2720 Lex.getKind() == lltok::greater ||
2721 Lex.getKind() == lltok::rparen)
2725 if (ParseGlobalTypeAndValue(C)) return true;
2728 while (EatIfPresent(lltok::comma)) {
2729 if (ParseGlobalTypeAndValue(C)) return true;
2736 bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
2737 assert(Lex.getKind() == lltok::lbrace);
2740 SmallVector<Value*, 16> Elts;
2741 if (ParseMDNodeVector(Elts, PFS) ||
2742 ParseToken(lltok::rbrace, "expected end of metadata node"))
2745 ID.MDNodeVal = MDNode::get(Context, Elts);
2746 ID.Kind = ValID::t_MDNode;
2750 /// ParseMetadataValue
2754 bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
2755 assert(Lex.getKind() == lltok::exclaim);
2760 if (Lex.getKind() == lltok::lbrace)
2761 return ParseMetadataListValue(ID, PFS);
2763 // Standalone metadata reference
2765 if (Lex.getKind() == lltok::APSInt) {
2766 if (ParseMDNodeID(ID.MDNodeVal)) return true;
2767 ID.Kind = ValID::t_MDNode;
2772 // ::= '!' STRINGCONSTANT
2773 if (ParseMDString(ID.MDStringVal)) return true;
2774 ID.Kind = ValID::t_MDString;
2779 //===----------------------------------------------------------------------===//
2780 // Function Parsing.
2781 //===----------------------------------------------------------------------===//
2783 bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
2784 PerFunctionState *PFS) {
2785 if (Ty->isFunctionTy())
2786 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2789 case ValID::t_LocalID:
2790 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2791 V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
2793 case ValID::t_LocalName:
2794 if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
2795 V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
2797 case ValID::t_InlineAsm: {
2798 PointerType *PTy = dyn_cast<PointerType>(Ty);
2800 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2801 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2802 return Error(ID.Loc, "invalid type for inline asm constraint string");
2803 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
2804 (ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
2807 case ValID::t_MDNode:
2808 if (!Ty->isMetadataTy())
2809 return Error(ID.Loc, "metadata value must have metadata type");
2812 case ValID::t_MDString:
2813 if (!Ty->isMetadataTy())
2814 return Error(ID.Loc, "metadata value must have metadata type");
2817 case ValID::t_GlobalName:
2818 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2820 case ValID::t_GlobalID:
2821 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2823 case ValID::t_APSInt:
2824 if (!Ty->isIntegerTy())
2825 return Error(ID.Loc, "integer constant must have integer type");
2826 ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2827 V = ConstantInt::get(Context, ID.APSIntVal);
2829 case ValID::t_APFloat:
2830 if (!Ty->isFloatingPointTy() ||
2831 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2832 return Error(ID.Loc, "floating point constant invalid for type");
2834 // The lexer has no type info, so builds all half, float, and double FP
2835 // constants as double. Fix this here. Long double does not need this.
2836 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
2839 ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
2841 else if (Ty->isFloatTy())
2842 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2845 V = ConstantFP::get(Context, ID.APFloatVal);
2847 if (V->getType() != Ty)
2848 return Error(ID.Loc, "floating point constant does not have type '" +
2849 getTypeString(Ty) + "'");
2853 if (!Ty->isPointerTy())
2854 return Error(ID.Loc, "null must be a pointer type");
2855 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2857 case ValID::t_Undef:
2858 // FIXME: LabelTy should not be a first-class type.
2859 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2860 return Error(ID.Loc, "invalid type for undef constant");
2861 V = UndefValue::get(Ty);
2863 case ValID::t_EmptyArray:
2864 if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
2865 return Error(ID.Loc, "invalid empty array initializer");
2866 V = UndefValue::get(Ty);
2869 // FIXME: LabelTy should not be a first-class type.
2870 if (!Ty->isFirstClassType() || Ty->isLabelTy())
2871 return Error(ID.Loc, "invalid type for null constant");
2872 V = Constant::getNullValue(Ty);
2874 case ValID::t_Constant:
2875 if (ID.ConstantVal->getType() != Ty)
2876 return Error(ID.Loc, "constant expression type mismatch");
2880 case ValID::t_ConstantStruct:
2881 case ValID::t_PackedConstantStruct:
2882 if (StructType *ST = dyn_cast<StructType>(Ty)) {
2883 if (ST->getNumElements() != ID.UIntVal)
2884 return Error(ID.Loc,
2885 "initializer with struct type has wrong # elements");
2886 if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
2887 return Error(ID.Loc, "packed'ness of initializer and type don't match");
2889 // Verify that the elements are compatible with the structtype.
2890 for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
2891 if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
2892 return Error(ID.Loc, "element " + Twine(i) +
2893 " of struct initializer doesn't match struct element type");
2895 V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
2898 return Error(ID.Loc, "constant expression type mismatch");
2901 llvm_unreachable("Invalid ValID");
2904 bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
2907 return ParseValID(ID, PFS) ||
2908 ConvertValIDToValue(Ty, ID, V, PFS);
2911 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
2913 return ParseType(Ty) ||
2914 ParseValue(Ty, V, PFS);
2917 bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
2918 PerFunctionState &PFS) {
2921 if (ParseTypeAndValue(V, PFS)) return true;
2922 if (!isa<BasicBlock>(V))
2923 return Error(Loc, "expected a basic block");
2924 BB = cast<BasicBlock>(V);
2930 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2931 /// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2932 /// OptionalAlign OptGC OptionalPrefix
2933 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2934 // Parse the linkage.
2935 LocTy LinkageLoc = Lex.getLoc();
2938 unsigned Visibility;
2939 AttrBuilder RetAttrs;
2942 LocTy RetTypeLoc = Lex.getLoc();
2943 if (ParseOptionalLinkage(Linkage) ||
2944 ParseOptionalVisibility(Visibility) ||
2945 ParseOptionalCallingConv(CC) ||
2946 ParseOptionalReturnAttrs(RetAttrs) ||
2947 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2950 // Verify that the linkage is ok.
2951 switch ((GlobalValue::LinkageTypes)Linkage) {
2952 case GlobalValue::ExternalLinkage:
2953 break; // always ok.
2954 case GlobalValue::DLLImportLinkage:
2955 case GlobalValue::ExternalWeakLinkage:
2957 return Error(LinkageLoc, "invalid linkage for function definition");
2959 case GlobalValue::PrivateLinkage:
2960 case GlobalValue::LinkerPrivateLinkage:
2961 case GlobalValue::LinkerPrivateWeakLinkage:
2962 case GlobalValue::InternalLinkage:
2963 case GlobalValue::AvailableExternallyLinkage:
2964 case GlobalValue::LinkOnceAnyLinkage:
2965 case GlobalValue::LinkOnceODRLinkage:
2966 case GlobalValue::LinkOnceODRAutoHideLinkage:
2967 case GlobalValue::WeakAnyLinkage:
2968 case GlobalValue::WeakODRLinkage:
2969 case GlobalValue::DLLExportLinkage:
2971 return Error(LinkageLoc, "invalid linkage for function declaration");
2973 case GlobalValue::AppendingLinkage:
2974 case GlobalValue::CommonLinkage:
2975 return Error(LinkageLoc, "invalid function linkage type");
2978 if (!FunctionType::isValidReturnType(RetType))
2979 return Error(RetTypeLoc, "invalid function return type");
2981 LocTy NameLoc = Lex.getLoc();
2983 std::string FunctionName;
2984 if (Lex.getKind() == lltok::GlobalVar) {
2985 FunctionName = Lex.getStrVal();
2986 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2987 unsigned NameID = Lex.getUIntVal();
2989 if (NameID != NumberedVals.size())
2990 return TokError("function expected to be numbered '%" +
2991 Twine(NumberedVals.size()) + "'");
2993 return TokError("expected function name");
2998 if (Lex.getKind() != lltok::lparen)
2999 return TokError("expected '(' in function argument list");
3001 SmallVector<ArgInfo, 8> ArgList;
3003 AttrBuilder FuncAttrs;
3004 std::vector<unsigned> FwdRefAttrGrps;
3006 std::string Section;
3010 LocTy UnnamedAddrLoc;
3011 Constant *Prefix = 0;
3013 if (ParseArgumentList(ArgList, isVarArg) ||
3014 ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
3016 ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
3018 (EatIfPresent(lltok::kw_section) &&
3019 ParseStringConstant(Section)) ||
3020 ParseOptionalAlignment(Alignment) ||
3021 (EatIfPresent(lltok::kw_gc) &&
3022 ParseStringConstant(GC)) ||
3023 (EatIfPresent(lltok::kw_prefix) &&
3024 ParseGlobalTypeAndValue(Prefix)))
3027 if (FuncAttrs.contains(Attribute::Builtin))
3028 return Error(BuiltinLoc, "'builtin' attribute not valid on function");
3030 // If the alignment was parsed as an attribute, move to the alignment field.
3031 if (FuncAttrs.hasAlignmentAttr()) {
3032 Alignment = FuncAttrs.getAlignment();
3033 FuncAttrs.removeAttribute(Attribute::Alignment);
3036 // Okay, if we got here, the function is syntactically valid. Convert types
3037 // and do semantic checks.
3038 std::vector<Type*> ParamTypeList;
3039 SmallVector<AttributeSet, 8> Attrs;
3041 if (RetAttrs.hasAttributes())
3042 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3043 AttributeSet::ReturnIndex,
3046 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3047 ParamTypeList.push_back(ArgList[i].Ty);
3048 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3049 AttrBuilder B(ArgList[i].Attrs, i + 1);
3050 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3054 if (FuncAttrs.hasAttributes())
3055 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3056 AttributeSet::FunctionIndex,
3059 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3061 if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
3062 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
3065 FunctionType::get(RetType, ParamTypeList, isVarArg);
3066 PointerType *PFT = PointerType::getUnqual(FT);
3069 if (!FunctionName.empty()) {
3070 // If this was a definition of a forward reference, remove the definition
3071 // from the forward reference table and fill in the forward ref.
3072 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
3073 ForwardRefVals.find(FunctionName);
3074 if (FRVI != ForwardRefVals.end()) {
3075 Fn = M->getFunction(FunctionName);
3077 return Error(FRVI->second.second, "invalid forward reference to "
3078 "function as global value!");
3079 if (Fn->getType() != PFT)
3080 return Error(FRVI->second.second, "invalid forward reference to "
3081 "function '" + FunctionName + "' with wrong type!");
3083 ForwardRefVals.erase(FRVI);
3084 } else if ((Fn = M->getFunction(FunctionName))) {
3085 // Reject redefinitions.
3086 return Error(NameLoc, "invalid redefinition of function '" +
3087 FunctionName + "'");
3088 } else if (M->getNamedValue(FunctionName)) {
3089 return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
3093 // If this is a definition of a forward referenced function, make sure the
3095 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
3096 = ForwardRefValIDs.find(NumberedVals.size());
3097 if (I != ForwardRefValIDs.end()) {
3098 Fn = cast<Function>(I->second.first);
3099 if (Fn->getType() != PFT)
3100 return Error(NameLoc, "type of definition and forward reference of '@" +
3101 Twine(NumberedVals.size()) + "' disagree");
3102 ForwardRefValIDs.erase(I);
3107 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
3108 else // Move the forward-reference to the correct spot in the module.
3109 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
3111 if (FunctionName.empty())
3112 NumberedVals.push_back(Fn);
3114 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
3115 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
3116 Fn->setCallingConv(CC);
3117 Fn->setAttributes(PAL);
3118 Fn->setUnnamedAddr(UnnamedAddr);
3119 Fn->setAlignment(Alignment);
3120 Fn->setSection(Section);
3121 if (!GC.empty()) Fn->setGC(GC.c_str());
3122 Fn->setPrefixData(Prefix);
3123 ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
3125 // Add all of the arguments we parsed to the function.
3126 Function::arg_iterator ArgIt = Fn->arg_begin();
3127 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
3128 // If the argument has a name, insert it into the argument symbol table.
3129 if (ArgList[i].Name.empty()) continue;
3131 // Set the name, if it conflicted, it will be auto-renamed.
3132 ArgIt->setName(ArgList[i].Name);
3134 if (ArgIt->getName() != ArgList[i].Name)
3135 return Error(ArgList[i].Loc, "redefinition of argument '%" +
3136 ArgList[i].Name + "'");
3143 /// ParseFunctionBody
3144 /// ::= '{' BasicBlock+ '}'
3146 bool LLParser::ParseFunctionBody(Function &Fn) {
3147 if (Lex.getKind() != lltok::lbrace)
3148 return TokError("expected '{' in function body");
3149 Lex.Lex(); // eat the {.
3151 int FunctionNumber = -1;
3152 if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
3154 PerFunctionState PFS(*this, Fn, FunctionNumber);
3156 // We need at least one basic block.
3157 if (Lex.getKind() == lltok::rbrace)
3158 return TokError("function body requires at least one basic block");
3160 while (Lex.getKind() != lltok::rbrace)
3161 if (ParseBasicBlock(PFS)) return true;
3166 // Verify function is ok.
3167 return PFS.FinishFunction();
3171 /// ::= LabelStr? Instruction*
3172 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
3173 // If this basic block starts out with a name, remember it.
3175 LocTy NameLoc = Lex.getLoc();
3176 if (Lex.getKind() == lltok::LabelStr) {
3177 Name = Lex.getStrVal();
3181 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
3182 if (BB == 0) return true;
3184 std::string NameStr;
3186 // Parse the instructions in this block until we get a terminator.
3188 SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
3190 // This instruction may have three possibilities for a name: a) none
3191 // specified, b) name specified "%foo =", c) number specified: "%4 =".
3192 LocTy NameLoc = Lex.getLoc();
3196 if (Lex.getKind() == lltok::LocalVarID) {
3197 NameID = Lex.getUIntVal();
3199 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
3201 } else if (Lex.getKind() == lltok::LocalVar) {
3202 NameStr = Lex.getStrVal();
3204 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
3208 switch (ParseInstruction(Inst, BB, PFS)) {
3209 default: llvm_unreachable("Unknown ParseInstruction result!");
3210 case InstError: return true;
3212 BB->getInstList().push_back(Inst);
3214 // With a normal result, we check to see if the instruction is followed by
3215 // a comma and metadata.
3216 if (EatIfPresent(lltok::comma))
3217 if (ParseInstructionMetadata(Inst, &PFS))
3220 case InstExtraComma:
3221 BB->getInstList().push_back(Inst);
3223 // If the instruction parser ate an extra comma at the end of it, it
3224 // *must* be followed by metadata.
3225 if (ParseInstructionMetadata(Inst, &PFS))
3230 // Set the name on the instruction.
3231 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
3232 } while (!isa<TerminatorInst>(Inst));
3237 //===----------------------------------------------------------------------===//
3238 // Instruction Parsing.
3239 //===----------------------------------------------------------------------===//
3241 /// ParseInstruction - Parse one of the many different instructions.
3243 int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
3244 PerFunctionState &PFS) {
3245 lltok::Kind Token = Lex.getKind();
3246 if (Token == lltok::Eof)
3247 return TokError("found end of file when expecting more instructions");
3248 LocTy Loc = Lex.getLoc();
3249 unsigned KeywordVal = Lex.getUIntVal();
3250 Lex.Lex(); // Eat the keyword.
3253 default: return Error(Loc, "expected instruction opcode");
3254 // Terminator Instructions.
3255 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
3256 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
3257 case lltok::kw_br: return ParseBr(Inst, PFS);
3258 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
3259 case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
3260 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
3261 case lltok::kw_resume: return ParseResume(Inst, PFS);
3262 // Binary Operators.
3266 case lltok::kw_shl: {
3267 bool NUW = EatIfPresent(lltok::kw_nuw);
3268 bool NSW = EatIfPresent(lltok::kw_nsw);
3269 if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
3271 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3273 if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
3274 if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
3277 case lltok::kw_fadd:
3278 case lltok::kw_fsub:
3279 case lltok::kw_fmul:
3280 case lltok::kw_fdiv:
3281 case lltok::kw_frem: {
3282 FastMathFlags FMF = EatFastMathFlagsIfPresent();
3283 int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
3287 Inst->setFastMathFlags(FMF);
3291 case lltok::kw_sdiv:
3292 case lltok::kw_udiv:
3293 case lltok::kw_lshr:
3294 case lltok::kw_ashr: {
3295 bool Exact = EatIfPresent(lltok::kw_exact);
3297 if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
3298 if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
3302 case lltok::kw_urem:
3303 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
3306 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
3307 case lltok::kw_icmp:
3308 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
3310 case lltok::kw_trunc:
3311 case lltok::kw_zext:
3312 case lltok::kw_sext:
3313 case lltok::kw_fptrunc:
3314 case lltok::kw_fpext:
3315 case lltok::kw_bitcast:
3316 case lltok::kw_uitofp:
3317 case lltok::kw_sitofp:
3318 case lltok::kw_fptoui:
3319 case lltok::kw_fptosi:
3320 case lltok::kw_inttoptr:
3321 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
3323 case lltok::kw_select: return ParseSelect(Inst, PFS);
3324 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
3325 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
3326 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
3327 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
3328 case lltok::kw_phi: return ParsePHI(Inst, PFS);
3329 case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
3330 case lltok::kw_call: return ParseCall(Inst, PFS, false);
3331 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
3333 case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
3334 case lltok::kw_load: return ParseLoad(Inst, PFS);
3335 case lltok::kw_store: return ParseStore(Inst, PFS);
3336 case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
3337 case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
3338 case lltok::kw_fence: return ParseFence(Inst, PFS);
3339 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
3340 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
3341 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
3345 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
3346 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
3347 if (Opc == Instruction::FCmp) {
3348 switch (Lex.getKind()) {
3349 default: return TokError("expected fcmp predicate (e.g. 'oeq')");
3350 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
3351 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
3352 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
3353 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
3354 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
3355 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
3356 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
3357 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
3358 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
3359 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
3360 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
3361 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
3362 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
3363 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
3364 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
3365 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
3368 switch (Lex.getKind()) {
3369 default: return TokError("expected icmp predicate (e.g. 'eq')");
3370 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
3371 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
3372 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
3373 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
3374 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
3375 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
3376 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
3377 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
3378 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
3379 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
3386 //===----------------------------------------------------------------------===//
3387 // Terminator Instructions.
3388 //===----------------------------------------------------------------------===//
3390 /// ParseRet - Parse a return instruction.
3391 /// ::= 'ret' void (',' !dbg, !1)*
3392 /// ::= 'ret' TypeAndValue (',' !dbg, !1)*
3393 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
3394 PerFunctionState &PFS) {
3395 SMLoc TypeLoc = Lex.getLoc();
3397 if (ParseType(Ty, true /*void allowed*/)) return true;
3399 Type *ResType = PFS.getFunction().getReturnType();
3401 if (Ty->isVoidTy()) {
3402 if (!ResType->isVoidTy())
3403 return Error(TypeLoc, "value doesn't match function result type '" +
3404 getTypeString(ResType) + "'");
3406 Inst = ReturnInst::Create(Context);
3411 if (ParseValue(Ty, RV, PFS)) return true;
3413 if (ResType != RV->getType())
3414 return Error(TypeLoc, "value doesn't match function result type '" +
3415 getTypeString(ResType) + "'");
3417 Inst = ReturnInst::Create(Context, RV);
3423 /// ::= 'br' TypeAndValue
3424 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3425 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
3428 BasicBlock *Op1, *Op2;
3429 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
3431 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
3432 Inst = BranchInst::Create(BB);
3436 if (Op0->getType() != Type::getInt1Ty(Context))
3437 return Error(Loc, "branch condition must have 'i1' type");
3439 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
3440 ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
3441 ParseToken(lltok::comma, "expected ',' after true destination") ||
3442 ParseTypeAndBasicBlock(Op2, Loc2, PFS))
3445 Inst = BranchInst::Create(Op1, Op2, Op0);
3451 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
3453 /// ::= (TypeAndValue ',' TypeAndValue)*
3454 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
3455 LocTy CondLoc, BBLoc;
3457 BasicBlock *DefaultBB;
3458 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
3459 ParseToken(lltok::comma, "expected ',' after switch condition") ||
3460 ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
3461 ParseToken(lltok::lsquare, "expected '[' with switch table"))
3464 if (!Cond->getType()->isIntegerTy())
3465 return Error(CondLoc, "switch condition must have integer type");
3467 // Parse the jump table pairs.
3468 SmallPtrSet<Value*, 32> SeenCases;
3469 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
3470 while (Lex.getKind() != lltok::rsquare) {
3474 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
3475 ParseToken(lltok::comma, "expected ',' after case value") ||
3476 ParseTypeAndBasicBlock(DestBB, PFS))
3479 if (!SeenCases.insert(Constant))
3480 return Error(CondLoc, "duplicate case value in switch");
3481 if (!isa<ConstantInt>(Constant))
3482 return Error(CondLoc, "case value is not a constant integer");
3484 Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
3487 Lex.Lex(); // Eat the ']'.
3489 SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
3490 for (unsigned i = 0, e = Table.size(); i != e; ++i)
3491 SI->addCase(Table[i].first, Table[i].second);
3498 /// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
3499 bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
3502 if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
3503 ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
3504 ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
3507 if (!Address->getType()->isPointerTy())
3508 return Error(AddrLoc, "indirectbr address must have pointer type");
3510 // Parse the destination list.
3511 SmallVector<BasicBlock*, 16> DestList;
3513 if (Lex.getKind() != lltok::rsquare) {
3515 if (ParseTypeAndBasicBlock(DestBB, PFS))
3517 DestList.push_back(DestBB);
3519 while (EatIfPresent(lltok::comma)) {
3520 if (ParseTypeAndBasicBlock(DestBB, PFS))
3522 DestList.push_back(DestBB);
3526 if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
3529 IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
3530 for (unsigned i = 0, e = DestList.size(); i != e; ++i)
3531 IBI->addDestination(DestList[i]);
3538 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
3539 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
3540 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
3541 LocTy CallLoc = Lex.getLoc();
3542 AttrBuilder RetAttrs, FnAttrs;
3543 std::vector<unsigned> FwdRefAttrGrps;
3549 SmallVector<ParamInfo, 16> ArgList;
3551 BasicBlock *NormalBB, *UnwindBB;
3552 if (ParseOptionalCallingConv(CC) ||
3553 ParseOptionalReturnAttrs(RetAttrs) ||
3554 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3555 ParseValID(CalleeID) ||
3556 ParseParameterList(ArgList, PFS) ||
3557 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3559 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
3560 ParseTypeAndBasicBlock(NormalBB, PFS) ||
3561 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
3562 ParseTypeAndBasicBlock(UnwindBB, PFS))
3565 // If RetType is a non-function pointer type, then this is the short syntax
3566 // for the call, which means that RetType is just the return type. Infer the
3567 // rest of the function argument types from the arguments that are present.
3568 PointerType *PFTy = 0;
3569 FunctionType *Ty = 0;
3570 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3571 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3572 // Pull out the types of all of the arguments...
3573 std::vector<Type*> ParamTypes;
3574 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3575 ParamTypes.push_back(ArgList[i].V->getType());
3577 if (!FunctionType::isValidReturnType(RetType))
3578 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3580 Ty = FunctionType::get(RetType, ParamTypes, false);
3581 PFTy = PointerType::getUnqual(Ty);
3584 // Look up the callee.
3586 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3588 // Set up the Attribute for the function.
3589 SmallVector<AttributeSet, 8> Attrs;
3590 if (RetAttrs.hasAttributes())
3591 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3592 AttributeSet::ReturnIndex,
3595 SmallVector<Value*, 8> Args;
3597 // Loop through FunctionType's arguments and ensure they are specified
3598 // correctly. Also, gather any parameter attributes.
3599 FunctionType::param_iterator I = Ty->param_begin();
3600 FunctionType::param_iterator E = Ty->param_end();
3601 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3602 Type *ExpectedTy = 0;
3605 } else if (!Ty->isVarArg()) {
3606 return Error(ArgList[i].Loc, "too many arguments specified");
3609 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3610 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3611 getTypeString(ExpectedTy) + "'");
3612 Args.push_back(ArgList[i].V);
3613 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
3614 AttrBuilder B(ArgList[i].Attrs, i + 1);
3615 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
3620 return Error(CallLoc, "not enough parameters specified for call");
3622 if (FnAttrs.hasAttributes())
3623 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3624 AttributeSet::FunctionIndex,
3627 // Finish off the Attribute and check them
3628 AttributeSet PAL = AttributeSet::get(Context, Attrs);
3630 InvokeInst *II = InvokeInst::Create(Callee, NormalBB, UnwindBB, Args);
3631 II->setCallingConv(CC);
3632 II->setAttributes(PAL);
3633 ForwardRefAttrGroups[II] = FwdRefAttrGrps;
3639 /// ::= 'resume' TypeAndValue
3640 bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
3641 Value *Exn; LocTy ExnLoc;
3642 if (ParseTypeAndValue(Exn, ExnLoc, PFS))
3645 ResumeInst *RI = ResumeInst::Create(Exn);
3650 //===----------------------------------------------------------------------===//
3651 // Binary Operators.
3652 //===----------------------------------------------------------------------===//
3655 /// ::= ArithmeticOps TypeAndValue ',' Value
3657 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3658 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3659 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3660 unsigned Opc, unsigned OperandType) {
3661 LocTy Loc; Value *LHS, *RHS;
3662 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3663 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3664 ParseValue(LHS->getType(), RHS, PFS))
3668 switch (OperandType) {
3669 default: llvm_unreachable("Unknown operand type!");
3670 case 0: // int or FP.
3671 Valid = LHS->getType()->isIntOrIntVectorTy() ||
3672 LHS->getType()->isFPOrFPVectorTy();
3674 case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
3675 case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
3679 return Error(Loc, "invalid operand type for instruction");
3681 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3686 /// ::= ArithmeticOps TypeAndValue ',' Value {
3687 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3689 LocTy Loc; Value *LHS, *RHS;
3690 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3691 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3692 ParseValue(LHS->getType(), RHS, PFS))
3695 if (!LHS->getType()->isIntOrIntVectorTy())
3696 return Error(Loc,"instruction requires integer or integer vector operands");
3698 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3704 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3705 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3706 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3708 // Parse the integer/fp comparison predicate.
3712 if (ParseCmpPredicate(Pred, Opc) ||
3713 ParseTypeAndValue(LHS, Loc, PFS) ||
3714 ParseToken(lltok::comma, "expected ',' after compare value") ||
3715 ParseValue(LHS->getType(), RHS, PFS))
3718 if (Opc == Instruction::FCmp) {
3719 if (!LHS->getType()->isFPOrFPVectorTy())
3720 return Error(Loc, "fcmp requires floating point operands");
3721 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3723 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3724 if (!LHS->getType()->isIntOrIntVectorTy() &&
3725 !LHS->getType()->getScalarType()->isPointerTy())
3726 return Error(Loc, "icmp requires integer operands");
3727 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3732 //===----------------------------------------------------------------------===//
3733 // Other Instructions.
3734 //===----------------------------------------------------------------------===//
3738 /// ::= CastOpc TypeAndValue 'to' Type
3739 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3744 if (ParseTypeAndValue(Op, Loc, PFS) ||
3745 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3749 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3750 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3751 return Error(Loc, "invalid cast opcode for cast from '" +
3752 getTypeString(Op->getType()) + "' to '" +
3753 getTypeString(DestTy) + "'");
3755 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3760 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3761 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3763 Value *Op0, *Op1, *Op2;
3764 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3765 ParseToken(lltok::comma, "expected ',' after select condition") ||
3766 ParseTypeAndValue(Op1, PFS) ||
3767 ParseToken(lltok::comma, "expected ',' after select value") ||
3768 ParseTypeAndValue(Op2, PFS))
3771 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3772 return Error(Loc, Reason);
3774 Inst = SelectInst::Create(Op0, Op1, Op2);
3779 /// ::= 'va_arg' TypeAndValue ',' Type
3780 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3784 if (ParseTypeAndValue(Op, PFS) ||
3785 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3786 ParseType(EltTy, TypeLoc))
3789 if (!EltTy->isFirstClassType())
3790 return Error(TypeLoc, "va_arg requires operand with first class type");
3792 Inst = new VAArgInst(Op, EltTy);
3796 /// ParseExtractElement
3797 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3798 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3801 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3802 ParseToken(lltok::comma, "expected ',' after extract value") ||
3803 ParseTypeAndValue(Op1, PFS))
3806 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3807 return Error(Loc, "invalid extractelement operands");
3809 Inst = ExtractElementInst::Create(Op0, Op1);
3813 /// ParseInsertElement
3814 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3815 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3817 Value *Op0, *Op1, *Op2;
3818 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3819 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3820 ParseTypeAndValue(Op1, PFS) ||
3821 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3822 ParseTypeAndValue(Op2, PFS))
3825 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3826 return Error(Loc, "invalid insertelement operands");
3828 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3832 /// ParseShuffleVector
3833 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3834 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3836 Value *Op0, *Op1, *Op2;
3837 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3838 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3839 ParseTypeAndValue(Op1, PFS) ||
3840 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3841 ParseTypeAndValue(Op2, PFS))
3844 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3845 return Error(Loc, "invalid shufflevector operands");
3847 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3852 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
3853 int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3854 Type *Ty = 0; LocTy TypeLoc;
3857 if (ParseType(Ty, TypeLoc) ||
3858 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3859 ParseValue(Ty, Op0, PFS) ||
3860 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3861 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3862 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3865 bool AteExtraComma = false;
3866 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3868 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3870 if (!EatIfPresent(lltok::comma))
3873 if (Lex.getKind() == lltok::MetadataVar) {
3874 AteExtraComma = true;
3878 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3879 ParseValue(Ty, Op0, PFS) ||
3880 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3881 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3882 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3886 if (!Ty->isFirstClassType())
3887 return Error(TypeLoc, "phi node must have first class type");
3889 PHINode *PN = PHINode::Create(Ty, PHIVals.size());
3890 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3891 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3893 return AteExtraComma ? InstExtraComma : InstNormal;
3897 /// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
3899 /// ::= 'catch' TypeAndValue
3901 /// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
3902 bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
3903 Type *Ty = 0; LocTy TyLoc;
3904 Value *PersFn; LocTy PersFnLoc;
3906 if (ParseType(Ty, TyLoc) ||
3907 ParseToken(lltok::kw_personality, "expected 'personality'") ||
3908 ParseTypeAndValue(PersFn, PersFnLoc, PFS))
3911 LandingPadInst *LP = LandingPadInst::Create(Ty, PersFn, 0);
3912 LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
3914 while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
3915 LandingPadInst::ClauseType CT;
3916 if (EatIfPresent(lltok::kw_catch))
3917 CT = LandingPadInst::Catch;
3918 else if (EatIfPresent(lltok::kw_filter))
3919 CT = LandingPadInst::Filter;
3921 return TokError("expected 'catch' or 'filter' clause type");
3923 Value *V; LocTy VLoc;
3924 if (ParseTypeAndValue(V, VLoc, PFS)) {
3929 // A 'catch' type expects a non-array constant. A filter clause expects an
3931 if (CT == LandingPadInst::Catch) {
3932 if (isa<ArrayType>(V->getType()))
3933 Error(VLoc, "'catch' clause has an invalid type");
3935 if (!isa<ArrayType>(V->getType()))
3936 Error(VLoc, "'filter' clause has an invalid type");
3947 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3948 /// ParameterList OptionalAttrs
3949 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3951 AttrBuilder RetAttrs, FnAttrs;
3952 std::vector<unsigned> FwdRefAttrGrps;
3958 SmallVector<ParamInfo, 16> ArgList;
3959 LocTy CallLoc = Lex.getLoc();
3961 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3962 ParseOptionalCallingConv(CC) ||
3963 ParseOptionalReturnAttrs(RetAttrs) ||
3964 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3965 ParseValID(CalleeID) ||
3966 ParseParameterList(ArgList, PFS) ||
3967 ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
3971 // If RetType is a non-function pointer type, then this is the short syntax
3972 // for the call, which means that RetType is just the return type. Infer the
3973 // rest of the function argument types from the arguments that are present.
3974 PointerType *PFTy = 0;
3975 FunctionType *Ty = 0;
3976 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3977 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3978 // Pull out the types of all of the arguments...
3979 std::vector<Type*> ParamTypes;
3980 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3981 ParamTypes.push_back(ArgList[i].V->getType());
3983 if (!FunctionType::isValidReturnType(RetType))
3984 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3986 Ty = FunctionType::get(RetType, ParamTypes, false);
3987 PFTy = PointerType::getUnqual(Ty);
3990 // Look up the callee.
3992 if (ConvertValIDToValue(PFTy, CalleeID, Callee, &PFS)) return true;
3994 // Set up the Attribute for the function.
3995 SmallVector<AttributeSet, 8> Attrs;
3996 if (RetAttrs.hasAttributes())
3997 Attrs.push_back(AttributeSet::get(RetType->getContext(),
3998 AttributeSet::ReturnIndex,
4001 SmallVector<Value*, 8> Args;
4003 // Loop through FunctionType's arguments and ensure they are specified
4004 // correctly. Also, gather any parameter attributes.
4005 FunctionType::param_iterator I = Ty->param_begin();
4006 FunctionType::param_iterator E = Ty->param_end();
4007 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4008 Type *ExpectedTy = 0;
4011 } else if (!Ty->isVarArg()) {
4012 return Error(ArgList[i].Loc, "too many arguments specified");
4015 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
4016 return Error(ArgList[i].Loc, "argument is not of expected type '" +
4017 getTypeString(ExpectedTy) + "'");
4018 Args.push_back(ArgList[i].V);
4019 if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4020 AttrBuilder B(ArgList[i].Attrs, i + 1);
4021 Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4026 return Error(CallLoc, "not enough parameters specified for call");
4028 if (FnAttrs.hasAttributes())
4029 Attrs.push_back(AttributeSet::get(RetType->getContext(),
4030 AttributeSet::FunctionIndex,
4033 // Finish off the Attribute and check them
4034 AttributeSet PAL = AttributeSet::get(Context, Attrs);
4036 CallInst *CI = CallInst::Create(Callee, Args);
4037 CI->setTailCall(isTail);
4038 CI->setCallingConv(CC);
4039 CI->setAttributes(PAL);
4040 ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
4045 //===----------------------------------------------------------------------===//
4046 // Memory Instructions.
4047 //===----------------------------------------------------------------------===//
4050 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
4051 int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
4054 unsigned Alignment = 0;
4056 if (ParseType(Ty)) return true;
4058 bool AteExtraComma = false;
4059 if (EatIfPresent(lltok::comma)) {
4060 if (Lex.getKind() == lltok::kw_align) {
4061 if (ParseOptionalAlignment(Alignment)) return true;
4062 } else if (Lex.getKind() == lltok::MetadataVar) {
4063 AteExtraComma = true;
4065 if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
4066 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4071 if (Size && !Size->getType()->isIntegerTy())
4072 return Error(SizeLoc, "element count must have integer type");
4074 Inst = new AllocaInst(Ty, Size, Alignment);
4075 return AteExtraComma ? InstExtraComma : InstNormal;
4079 /// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
4080 /// ::= 'load' 'atomic' 'volatile'? TypeAndValue
4081 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4082 int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
4083 Value *Val; LocTy Loc;
4084 unsigned Alignment = 0;
4085 bool AteExtraComma = false;
4086 bool isAtomic = false;
4087 AtomicOrdering Ordering = NotAtomic;
4088 SynchronizationScope Scope = CrossThread;
4090 if (Lex.getKind() == lltok::kw_atomic) {
4095 bool isVolatile = false;
4096 if (Lex.getKind() == lltok::kw_volatile) {
4101 if (ParseTypeAndValue(Val, Loc, PFS) ||
4102 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4103 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4106 if (!Val->getType()->isPointerTy() ||
4107 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
4108 return Error(Loc, "load operand must be a pointer to a first class type");
4109 if (isAtomic && !Alignment)
4110 return Error(Loc, "atomic load must have explicit non-zero alignment");
4111 if (Ordering == Release || Ordering == AcquireRelease)
4112 return Error(Loc, "atomic load cannot use Release ordering");
4114 Inst = new LoadInst(Val, "", isVolatile, Alignment, Ordering, Scope);
4115 return AteExtraComma ? InstExtraComma : InstNormal;
4120 /// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
4121 /// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
4122 /// 'singlethread'? AtomicOrdering (',' 'align' i32)?
4123 int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
4124 Value *Val, *Ptr; LocTy Loc, PtrLoc;
4125 unsigned Alignment = 0;
4126 bool AteExtraComma = false;
4127 bool isAtomic = false;
4128 AtomicOrdering Ordering = NotAtomic;
4129 SynchronizationScope Scope = CrossThread;
4131 if (Lex.getKind() == lltok::kw_atomic) {
4136 bool isVolatile = false;
4137 if (Lex.getKind() == lltok::kw_volatile) {
4142 if (ParseTypeAndValue(Val, Loc, PFS) ||
4143 ParseToken(lltok::comma, "expected ',' after store operand") ||
4144 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4145 ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
4146 ParseOptionalCommaAlign(Alignment, AteExtraComma))
4149 if (!Ptr->getType()->isPointerTy())
4150 return Error(PtrLoc, "store operand must be a pointer");
4151 if (!Val->getType()->isFirstClassType())
4152 return Error(Loc, "store operand must be a first class value");
4153 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4154 return Error(Loc, "stored value and pointer type do not match");
4155 if (isAtomic && !Alignment)
4156 return Error(Loc, "atomic store must have explicit non-zero alignment");
4157 if (Ordering == Acquire || Ordering == AcquireRelease)
4158 return Error(Loc, "atomic store cannot use Acquire ordering");
4160 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
4161 return AteExtraComma ? InstExtraComma : InstNormal;
4165 /// ::= 'cmpxchg' 'volatile'? TypeAndValue ',' TypeAndValue ',' TypeAndValue
4166 /// 'singlethread'? AtomicOrdering
4167 int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
4168 Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
4169 bool AteExtraComma = false;
4170 AtomicOrdering Ordering = NotAtomic;
4171 SynchronizationScope Scope = CrossThread;
4172 bool isVolatile = false;
4174 if (EatIfPresent(lltok::kw_volatile))
4177 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4178 ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
4179 ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
4180 ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
4181 ParseTypeAndValue(New, NewLoc, PFS) ||
4182 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4185 if (Ordering == Unordered)
4186 return TokError("cmpxchg cannot be unordered");
4187 if (!Ptr->getType()->isPointerTy())
4188 return Error(PtrLoc, "cmpxchg operand must be a pointer");
4189 if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
4190 return Error(CmpLoc, "compare value and pointer type do not match");
4191 if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
4192 return Error(NewLoc, "new value and pointer type do not match");
4193 if (!New->getType()->isIntegerTy())
4194 return Error(NewLoc, "cmpxchg operand must be an integer");
4195 unsigned Size = New->getType()->getPrimitiveSizeInBits();
4196 if (Size < 8 || (Size & (Size - 1)))
4197 return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
4200 AtomicCmpXchgInst *CXI =
4201 new AtomicCmpXchgInst(Ptr, Cmp, New, Ordering, Scope);
4202 CXI->setVolatile(isVolatile);
4204 return AteExtraComma ? InstExtraComma : InstNormal;
4208 /// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
4209 /// 'singlethread'? AtomicOrdering
4210 int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
4211 Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
4212 bool AteExtraComma = false;
4213 AtomicOrdering Ordering = NotAtomic;
4214 SynchronizationScope Scope = CrossThread;
4215 bool isVolatile = false;
4216 AtomicRMWInst::BinOp Operation;
4218 if (EatIfPresent(lltok::kw_volatile))
4221 switch (Lex.getKind()) {
4222 default: return TokError("expected binary operation in atomicrmw");
4223 case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
4224 case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
4225 case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
4226 case lltok::kw_and: Operation = AtomicRMWInst::And; break;
4227 case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
4228 case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
4229 case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
4230 case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
4231 case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
4232 case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
4233 case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
4235 Lex.Lex(); // Eat the operation.
4237 if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
4238 ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
4239 ParseTypeAndValue(Val, ValLoc, PFS) ||
4240 ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4243 if (Ordering == Unordered)
4244 return TokError("atomicrmw cannot be unordered");
4245 if (!Ptr->getType()->isPointerTy())
4246 return Error(PtrLoc, "atomicrmw operand must be a pointer");
4247 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
4248 return Error(ValLoc, "atomicrmw value and pointer type do not match");
4249 if (!Val->getType()->isIntegerTy())
4250 return Error(ValLoc, "atomicrmw operand must be an integer");
4251 unsigned Size = Val->getType()->getPrimitiveSizeInBits();
4252 if (Size < 8 || (Size & (Size - 1)))
4253 return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
4256 AtomicRMWInst *RMWI =
4257 new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
4258 RMWI->setVolatile(isVolatile);
4260 return AteExtraComma ? InstExtraComma : InstNormal;
4264 /// ::= 'fence' 'singlethread'? AtomicOrdering
4265 int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
4266 AtomicOrdering Ordering = NotAtomic;
4267 SynchronizationScope Scope = CrossThread;
4268 if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
4271 if (Ordering == Unordered)
4272 return TokError("fence cannot be unordered");
4273 if (Ordering == Monotonic)
4274 return TokError("fence cannot be monotonic");
4276 Inst = new FenceInst(Context, Ordering, Scope);
4280 /// ParseGetElementPtr
4281 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
4282 int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
4287 bool InBounds = EatIfPresent(lltok::kw_inbounds);
4289 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
4291 Type *BaseType = Ptr->getType();
4292 PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
4293 if (!BasePointerType)
4294 return Error(Loc, "base of getelementptr must be a pointer");
4296 SmallVector<Value*, 16> Indices;
4297 bool AteExtraComma = false;
4298 while (EatIfPresent(lltok::comma)) {
4299 if (Lex.getKind() == lltok::MetadataVar) {
4300 AteExtraComma = true;
4303 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
4304 if (!Val->getType()->getScalarType()->isIntegerTy())
4305 return Error(EltLoc, "getelementptr index must be an integer");
4306 if (Val->getType()->isVectorTy() != Ptr->getType()->isVectorTy())
4307 return Error(EltLoc, "getelementptr index type missmatch");
4308 if (Val->getType()->isVectorTy()) {
4309 unsigned ValNumEl = cast<VectorType>(Val->getType())->getNumElements();
4310 unsigned PtrNumEl = cast<VectorType>(Ptr->getType())->getNumElements();
4311 if (ValNumEl != PtrNumEl)
4312 return Error(EltLoc,
4313 "getelementptr vector index has a wrong number of elements");
4315 Indices.push_back(Val);
4318 if (!Indices.empty() && !BasePointerType->getElementType()->isSized())
4319 return Error(Loc, "base element of getelementptr must be sized");
4321 if (!GetElementPtrInst::getIndexedType(BaseType, Indices))
4322 return Error(Loc, "invalid getelementptr indices");
4323 Inst = GetElementPtrInst::Create(Ptr, Indices);
4325 cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
4326 return AteExtraComma ? InstExtraComma : InstNormal;
4329 /// ParseExtractValue
4330 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
4331 int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
4332 Value *Val; LocTy Loc;
4333 SmallVector<unsigned, 4> Indices;
4335 if (ParseTypeAndValue(Val, Loc, PFS) ||
4336 ParseIndexList(Indices, AteExtraComma))
4339 if (!Val->getType()->isAggregateType())
4340 return Error(Loc, "extractvalue operand must be aggregate type");
4342 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
4343 return Error(Loc, "invalid indices for extractvalue");
4344 Inst = ExtractValueInst::Create(Val, Indices);
4345 return AteExtraComma ? InstExtraComma : InstNormal;
4348 /// ParseInsertValue
4349 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
4350 int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
4351 Value *Val0, *Val1; LocTy Loc0, Loc1;
4352 SmallVector<unsigned, 4> Indices;
4354 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
4355 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
4356 ParseTypeAndValue(Val1, Loc1, PFS) ||
4357 ParseIndexList(Indices, AteExtraComma))
4360 if (!Val0->getType()->isAggregateType())
4361 return Error(Loc0, "insertvalue operand must be aggregate type");
4363 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
4364 return Error(Loc0, "invalid indices for insertvalue");
4365 Inst = InsertValueInst::Create(Val0, Val1, Indices);
4366 return AteExtraComma ? InstExtraComma : InstNormal;
4369 //===----------------------------------------------------------------------===//
4370 // Embedded metadata.
4371 //===----------------------------------------------------------------------===//
4373 /// ParseMDNodeVector
4374 /// ::= Element (',' Element)*
4376 /// ::= 'null' | TypeAndValue
4377 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
4378 PerFunctionState *PFS) {
4379 // Check for an empty list.
4380 if (Lex.getKind() == lltok::rbrace)
4384 // Null is a special case since it is typeless.
4385 if (EatIfPresent(lltok::kw_null)) {
4391 if (ParseTypeAndValue(V, PFS)) return true;
4393 } while (EatIfPresent(lltok::comma));