190     : ExternalSource(nullptr), CurFPFeatures(pp.getLangOpts()),  in Sema()
545   if (!ExternalSource) {  in addExternalSource()
546     ExternalSource = E;  in addExternalSource()
550   if (auto *Ex = dyn_cast<MultiplexExternalSemaSource>(ExternalSource))  in addExternalSource()
553     ExternalSource = new MultiplexExternalSemaSource(ExternalSource.get(), E);  in addExternalSource()
917   if (!ExternalSource)  in LoadExternalWeakUndeclaredIdentifiers()
921   ExternalSource->ReadWeakUndeclaredIdentifiers(WeakIDs);  in LoadExternalWeakUndeclaredIdentifiers()
1008   if (ExternalSource)  in emitAndClearUnusedLocalTypedefWarnings()
1009     ExternalSource->ReadUnusedLocalTypedefNameCandidates(  in emitAndClearUnusedLocalTypedefWarnings()
1072   if (ExternalSource) {  in ActOnEndOfTranslationUnitFragment()
1075     ExternalSource->ReadPendingInstantiations(Pending);  in ActOnEndOfTranslationUnitFragment()
1201     if (ExternalSource)  in ActOnEndOfTranslationUnit()
1202       ExternalSource->ReadUndefinedButUsed(UndefinedButUsed);  in ActOnEndOfTranslationUnit()
1296            T = TentativeDefinitions.begin(ExternalSource.get()),  in ActOnEndOfTranslationUnit()
1341              I = UnusedFileScopedDecls.begin(ExternalSource.get()),  in ActOnEndOfTranslationUnit()
1423     if (ExternalSource)  in ActOnEndOfTranslationUnit()
1424       ExternalSource->ReadMismatchingDeleteExpressions(DeleteExprs);  in ActOnEndOfTranslationUnit()
1787   if (ExternalSource)  in emitDeferredDiags()
1788     ExternalSource->ReadDeclsToCheckForDeferredDiags(  in emitDeferredDiags()