208       NamedDecl *Existing = nullptr;  member in clang::ASTDeclReader::FindExistingResult
216       FindExistingResult(ASTReader &Reader, NamedDecl *New, NamedDecl *Existing,  in FindExistingResult()  argument
219           : Reader(Reader), New(New), Existing(Existing), AddResult(true),  in FindExistingResult()
224           : Reader(Other.Reader), New(Other.New), Existing(Other.Existing),  in FindExistingResult()
238       operator NamedDecl*() const { return Existing; }  in operator NamedDecl*()
241       operator T*() const { return dyn_cast_or_null<T>(Existing); }  in operator T*()
418     void mergeRedeclarable(Redeclarable<T> *D, T *Existing,
428                               RedeclarableTemplateDecl *Existing,
1383   if (MSGuidDecl *Existing = Reader.getContext().MSGuidDecls.GetOrInsertNode(D))  in VisitMSGuidDecl()  local
1384     Reader.getContext().setPrimaryMergedDecl(D, Existing->getCanonicalDecl());  in VisitMSGuidDecl()
1393   if (TemplateParamObjectDecl *Existing =  in VisitTemplateParamObjectDecl()  local
1395     Reader.getContext().setPrimaryMergedDecl(D, Existing->getCanonicalDecl());  in VisitTemplateParamObjectDecl()
2523   if (auto *Existing = Redecl.getKnownMergeTarget())  in mergeRedeclarable()  local
2525     mergeRedeclarable(D, cast<T>(Existing), Redecl, TemplatePatternID);  in mergeRedeclarable()
2527     if (T *Existing = ExistingRes)  in mergeRedeclarable()  local
2528       mergeRedeclarable(D, Existing, Redecl, TemplatePatternID);  in mergeRedeclarable()
2542                                          RedeclarableTemplateDecl *Existing,  in mergeTemplatePattern()  argument
2545   auto *ExistingPattern = Existing->getTemplatedDecl();  in mergeTemplatePattern()
2584 void ASTDeclReader::mergeRedeclarable(Redeclarable<T> *DBase, T *Existing,  in mergeRedeclarable()  argument
2588   T *ExistingCanon = Existing->getCanonicalDecl();  in mergeRedeclarable()
2673     if (T *Existing = ExistingRes)  in mergeMergeable()  local
2675                                                Existing->getCanonicalDecl());  in mergeMergeable()
3313   if (!AddResult || Existing)  in ~FindExistingResult()
3447     if (auto *Existing = getAnonymousDeclForMerging(  in findExisting()  local
3449       if (isSameEntity(Existing, D))  in findExisting()
3450         return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,  in findExisting()
3480       if (NamedDecl *Existing = getDeclForMerging(*I, TypedefNameForLinkage))  in findExisting()  local
3481         if (isSameEntity(Existing, D))  in findExisting()
3482           return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,  in findExisting()
3488       if (NamedDecl *Existing = getDeclForMerging(*I, TypedefNameForLinkage))  in findExisting()  local
3489         if (isSameEntity(Existing, D))  in findExisting()
3490           return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,  in findExisting()
4302         ObjCCategoryDecl *&Existing = NameCategoryMap[Cat->getDeclName()];  in add()  local
4303         if (Existing &&  in add()
4304             Reader.getOwningModuleFile(Existing)  in add()
4319           Reader.Diag(Existing->getLocation(), diag::note_previous_definition);  in add()
4320         } else if (!Existing) {  in add()
4322           Existing = Cat;  in add()