[clang] NFCI: Use the *Ref() variant on search paths

This removes some uses of the deprecated `DirectoryEntry::getName()`.

clang-tools-extra/clangd/index/StdLib.cpp

@@ -314,7 +314,7 @@ std::optional<StdLibLocation> StdLibSet::add(const LangOptions &LO,
        llvm::make_range(HS.search_dir_begin(), HS.search_dir_end())) {
     switch (DL.getLookupType()) {
     case DirectoryLookup::LT_NormalDir: {
-      Path = DL.getDir()->getName();
+      Path = DL.getDirRef()->getName();
       llvm::sys::path::append(Path, ProbeHeader);
       llvm::vfs::Status Stat;
       if (!HS.getFileMgr().getNoncachedStatValue(Path, Stat) &&

clang/lib/Lex/HeaderSearch.cpp

@@ -311,7 +311,7 @@ Module *HeaderSearch::lookupModule(StringRef ModuleName, StringRef SearchName,
       // SearchName rather than ModuleName, to permit finding private modules
       // named FooPrivate in buggy frameworks named Foo.
       SmallString<128> FrameworkDirName;
-      FrameworkDirName += Dir.getFrameworkDir()->getName();
+      FrameworkDirName += Dir.getFrameworkDirRef()->getName();
       llvm::sys::path::append(FrameworkDirName, SearchName + ".framework");
       if (auto FrameworkDir =
               FileMgr.getOptionalDirectoryRef(FrameworkDirName)) {
@@ -345,7 +345,7 @@ Module *HeaderSearch::lookupModule(StringRef ModuleName, StringRef SearchName,
     // Search for a module map in a subdirectory with the same name as the
     // module.
     SmallString<128> NestedModuleMapDirName;
-    NestedModuleMapDirName = Dir.getDir()->getName();
+    NestedModuleMapDirName = Dir.getDirRef()->getName();
     llvm::sys::path::append(NestedModuleMapDirName, ModuleName);
     if (loadModuleMapFile(NestedModuleMapDirName, IsSystem,
                           /*IsFramework*/false) == LMM_NewlyLoaded){
@@ -405,11 +405,10 @@ void HeaderSearch::indexInitialHeaderMaps() {
 /// getName - Return the directory or filename corresponding to this lookup
 /// object.
 StringRef DirectoryLookup::getName() const {
-  // FIXME: Use the name from \c DirectoryEntryRef.
   if (isNormalDir())
-    return getDir()->getName();
+    return getDirRef()->getName();
   if (isFramework())
-    return getFrameworkDir()->getName();
+    return getFrameworkDirRef()->getName();
   assert(isHeaderMap() && "Unknown DirectoryLookup");
   return getHeaderMap()->getFileName();
 }
@@ -1840,7 +1839,7 @@ void HeaderSearch::collectAllModules(SmallVectorImpl<Module *> &Modules) {
       if (DL.isFramework()) {
         std::error_code EC;
         SmallString<128> DirNative;
-        llvm::sys::path::native(DL.getFrameworkDir()->getName(), DirNative);
+        llvm::sys::path::native(DL.getFrameworkDirRef()->getName(), DirNative);
 
         // Search each of the ".framework" directories to load them as modules.
         llvm::vfs::FileSystem &FS = FileMgr.getVirtualFileSystem();
@@ -1903,7 +1902,7 @@ void HeaderSearch::loadSubdirectoryModuleMaps(DirectoryLookup &SearchDir) {
     return;
 
   std::error_code EC;
-  SmallString<128> Dir = SearchDir.getDir()->getName();
+  SmallString<128> Dir = SearchDir.getDirRef()->getName();
   FileMgr.makeAbsolutePath(Dir);
   SmallString<128> DirNative;
   llvm::sys::path::native(Dir, DirNative);
@@ -1986,14 +1985,14 @@ std::string HeaderSearch::suggestPathToFileForDiagnostics(
   bool BestPrefixIsFramework = false;
   for (const DirectoryLookup &DL : search_dir_range()) {
     if (DL.isNormalDir()) {
-      StringRef Dir = DL.getDir()->getName();
+      StringRef Dir = DL.getDirRef()->getName();
       if (CheckDir(Dir)) {
         if (IsSystem)
           *IsSystem = BestPrefixLength && isSystem(DL.getDirCharacteristic());
         BestPrefixIsFramework = false;
       }
     } else if (DL.isFramework()) {
-      StringRef Dir = DL.getFrameworkDir()->getName();
+      StringRef Dir = DL.getFrameworkDirRef()->getName();
       if (CheckDir(Dir)) {
         if (IsSystem)
           *IsSystem = BestPrefixLength && isSystem(DL.getDirCharacteristic());