209       NamedDecl *Existing = nullptr;  member in clang::ASTDeclReader::FindExistingResult
217       FindExistingResult(ASTReader &Reader, NamedDecl *New, NamedDecl *Existing,  in FindExistingResult()  argument
220           : Reader(Reader), New(New), Existing(Existing), AddResult(true),  in FindExistingResult()
225           : Reader(Other.Reader), New(Other.New), Existing(Other.Existing),  in FindExistingResult()
239       operator NamedDecl*() const { return Existing; }  in operator NamedDecl*()
242       operator T*() const { return dyn_cast_or_null<T>(Existing); }  in operator T*()
422     void mergeRedeclarable(Redeclarable<T> *D, T *Existing,
432                               RedeclarableTemplateDecl *Existing,
1478   if (MSGuidDecl *Existing = Reader.getContext().MSGuidDecls.GetOrInsertNode(D))  in VisitMSGuidDecl()  local
1479     Reader.getContext().setPrimaryMergedDecl(D, Existing->getCanonicalDecl());  in VisitMSGuidDecl()
1488   if (UnnamedGlobalConstantDecl *Existing =  in VisitUnnamedGlobalConstantDecl()  local
1490     Reader.getContext().setPrimaryMergedDecl(D, Existing->getCanonicalDecl());  in VisitUnnamedGlobalConstantDecl()
1499   if (TemplateParamObjectDecl *Existing =  in VisitTemplateParamObjectDecl()  local
1501     Reader.getContext().setPrimaryMergedDecl(D, Existing->getCanonicalDecl());  in VisitTemplateParamObjectDecl()
2649   if (auto *Existing = Redecl.getKnownMergeTarget())  in mergeRedeclarable()  local
2651     mergeRedeclarable(D, cast<T>(Existing), Redecl, TemplatePatternID);  in mergeRedeclarable()
2653     if (T *Existing = ExistingRes)  in mergeRedeclarable()  local
2654       mergeRedeclarable(D, Existing, Redecl, TemplatePatternID);  in mergeRedeclarable()
2668                                          RedeclarableTemplateDecl *Existing,  in mergeTemplatePattern()  argument
2671   auto *ExistingPattern = Existing->getTemplatedDecl();  in mergeTemplatePattern()
2710 void ASTDeclReader::mergeRedeclarable(Redeclarable<T> *DBase, T *Existing,  in mergeRedeclarable()  argument
2714   T *ExistingCanon = Existing->getCanonicalDecl();  in mergeRedeclarable()
2799     if (T *Existing = ExistingRes)  in mergeMergeable()  local
2801                                                Existing->getCanonicalDecl());  in mergeMergeable()
3074   if (!AddResult || Existing)  in ~FindExistingResult()
3214     if (auto *Existing = getAnonymousDeclForMerging(  in findExisting()  local
3216       if (C.isSameEntity(Existing, D))  in findExisting()
3217         return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,  in findExisting()
3247       if (NamedDecl *Existing = getDeclForMerging(*I, TypedefNameForLinkage))  in findExisting()  local
3248         if (C.isSameEntity(Existing, D))  in findExisting()
3249           return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,  in findExisting()
3255       if (NamedDecl *Existing = getDeclForMerging(*I, TypedefNameForLinkage))  in findExisting()  local
3256         if (C.isSameEntity(Existing, D))  in findExisting()
3257           return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,  in findExisting()
4085         ObjCCategoryDecl *&Existing = NameCategoryMap[Cat->getDeclName()];  in add()  local
4086         if (Existing &&  in add()
4087             Reader.getOwningModuleFile(Existing)  in add()
4102           Reader.Diag(Existing->getLocation(), diag::note_previous_definition);  in add()
4103         } else if (!Existing) {  in add()
4105           Existing = Cat;  in add()