221       NamedDecl *Existing = nullptr;  member in clang::ASTDeclReader::FindExistingResult
229       FindExistingResult(ASTReader &Reader, NamedDecl *New, NamedDecl *Existing,  in FindExistingResult()  argument
232           : Reader(Reader), New(New), Existing(Existing), AddResult(true),  in FindExistingResult()
237           : Reader(Other.Reader), New(Other.New), Existing(Other.Existing),  in FindExistingResult()
251       operator NamedDecl*() const { return Existing; }  in operator NamedDecl*()
254       operator T*() const { return dyn_cast_or_null<T>(Existing); }  in operator T*()
442     void mergeRedeclarable(Redeclarable<T> *D, T *Existing,
451                               RedeclarableTemplateDecl *Existing,
944   FunctionDecl *Existing = nullptr;  in VisitFunctionDecl()  local
1023         Existing = ExistingInfo->getFunction();  in VisitFunctionDecl()
1125   if (Existing)  in VisitFunctionDecl()
1126     mergeRedeclarable(FD, Existing, Redecl);  in VisitFunctionDecl()
1133       auto *Existing = cast_or_null<FunctionDecl>(Redecl.getKnownMergeTarget());  in VisitFunctionDecl()  local
1134       RedeclarableResult NewRedecl(Existing ? F(Existing) : nullptr,  in VisitFunctionDecl()
1566   if (MSGuidDecl *Existing = Reader.getContext().MSGuidDecls.GetOrInsertNode(D))  in VisitMSGuidDecl()  local
1567     Reader.getContext().setPrimaryMergedDecl(D, Existing->getCanonicalDecl());  in VisitMSGuidDecl()
1576   if (UnnamedGlobalConstantDecl *Existing =  in VisitUnnamedGlobalConstantDecl()  local
1578     Reader.getContext().setPrimaryMergedDecl(D, Existing->getCanonicalDecl());  in VisitUnnamedGlobalConstantDecl()
1587   if (TemplateParamObjectDecl *Existing =  in VisitTemplateParamObjectDecl()  local
1589     Reader.getContext().setPrimaryMergedDecl(D, Existing->getCanonicalDecl());  in VisitTemplateParamObjectDecl()
2854   if (auto *Existing = Redecl.getKnownMergeTarget())  in mergeRedeclarable()  local
2856     mergeRedeclarable(D, cast<T>(Existing), Redecl);  in mergeRedeclarable()
2858     if (T *Existing = ExistingRes)  in mergeRedeclarable()  local
2859       mergeRedeclarable(D, Existing, Redecl);  in mergeRedeclarable()
2883   if (auto *Existing = Redecl.getKnownMergeTarget())  in mergeLambda()  local
2885     mergeRedeclarable(D, cast<TagDecl>(Existing), Redecl);  in mergeLambda()
2917                                          RedeclarableTemplateDecl *Existing,  in mergeTemplatePattern()  argument
2920   auto *ExistingPattern = Existing->getTemplatedDecl();  in mergeTemplatePattern()
2959 void ASTDeclReader::mergeRedeclarable(Redeclarable<T> *DBase, T *Existing,  in mergeRedeclarable()  argument
2962   T *ExistingCanon = Existing->getCanonicalDecl();  in mergeRedeclarable()
3044     if (T *Existing = ExistingRes)  in mergeMergeable()  local
3046                                                Existing->getCanonicalDecl());  in mergeMergeable()
3328   if (!AddResult || Existing)  in ~FindExistingResult()
3468     if (auto *Existing = getAnonymousDeclForMerging(  in findExisting()  local
3470       if (C.isSameEntity(Existing, D))  in findExisting()
3471         return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,  in findExisting()
3501       if (NamedDecl *Existing = getDeclForMerging(*I, TypedefNameForLinkage))  in findExisting()  local
3502         if (C.isSameEntity(Existing, D))  in findExisting()
3503           return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,  in findExisting()
3509       if (NamedDecl *Existing = getDeclForMerging(*I, TypedefNameForLinkage))  in findExisting()  local
3510         if (C.isSameEntity(Existing, D))  in findExisting()
3511           return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,  in findExisting()
4348         ObjCCategoryDecl *&Existing = NameCategoryMap[Cat->getDeclName()];  in add()  local
4349         if (Existing && Reader.getOwningModuleFile(Existing) !=  in add()
4353               Cat->getASTContext(), Existing->getASTContext(),  in add()
4358           if (!Ctx.IsEquivalent(Cat, Existing)) {  in add()
4362             Reader.Diag(Existing->getLocation(),  in add()
4365         } else if (!Existing) {  in add()
4367           Existing = Cat;  in add()