448     StringRef &Filename, HeaderSearch &HS, SourceLocation IncludeLoc,  in LookupFile()  argument
473     return HS.getFileAndSuggestModule(  in LookupFile()
479     return DoFrameworkLookup(Filename, HS, SearchPath, RelativePath,  in LookupFile()
503     if (!HS.findUsableModuleForHeader(File, File.getFileEntry().getDir(),  in LookupFile()
520   if (auto Res = HS.getFileMgr().getOptionalFileRef(Dest, OpenFile)) {  in LookupFile()
528   HS.noteLookupUsage(HS.searchDirIdx(*this), IncludeLoc);  in LookupFile()
593     StringRef Filename, HeaderSearch &HS, SmallVectorImpl<char> *SearchPath,  in DoFrameworkLookup()  argument
597   FileManager &FileMgr = HS.getFileMgr();  in DoFrameworkLookup()
607     HS.LookupFrameworkCache(Filename.substr(0, SlashPos));  in DoFrameworkLookup()
715       if (!HS.findUsableModuleForFrameworkHeader(*File, FrameworkPath,  in DoFrameworkLookup()
720       if (!HS.findUsableModuleForHeader(*File, getDir(), RequestingModule,  in DoFrameworkLookup()
1585 static bool suggestModule(HeaderSearch &HS, FileEntryRef File,  in suggestModule()  argument
1589       HS.findModuleForHeader(File, /*AllowTextual*/true);  in suggestModule()
1594     HS.getModuleMap().resolveUses(RequestingModule, /*Complain*/ false);  in suggestModule()
1601       if (HS.getModuleMap().isBuiltinHeader(File)) {  in suggestModule()