206   llvm::IntrusiveRefCntPtr<llvm::vfs::OverlayFileSystem> OverlayFileSystem(  in runToolOnCodeWithArgs()  local
207       new llvm::vfs::OverlayFileSystem(llvm::vfs::getRealFileSystem()));  in runToolOnCodeWithArgs()
210   OverlayFileSystem->pushOverlay(InMemoryFileSystem);  in runToolOnCodeWithArgs()
223   return runToolOnCodeWithArgs(std::move(ToolAction), Code, OverlayFileSystem,  in runToolOnCodeWithArgs()
413       OverlayFileSystem(new llvm::vfs::OverlayFileSystem(std::move(BaseFS))),  in ClangTool()
416                   : new FileManager(FileSystemOptions(), OverlayFileSystem)) {  in ClangTool()
417   OverlayFileSystem->pushOverlay(InMemoryFileSystem);  in ClangTool()
422     Files->setVirtualFileSystem(OverlayFileSystem);  in ClangTool()
473     auto AbsPath = getAbsolutePath(*OverlayFileSystem, SourcePath);  in run()
486     if (auto CWD = OverlayFileSystem->getCurrentWorkingDirectory()) {  in run()
517       if (OverlayFileSystem->setCurrentWorkingDirectory(  in run()
565             OverlayFileSystem->setCurrentWorkingDirectory(InitialWorkingDir))  in run()
630   llvm::IntrusiveRefCntPtr<llvm::vfs::OverlayFileSystem> OverlayFileSystem(  in buildASTFromCodeWithArgs()  local
631       new llvm::vfs::OverlayFileSystem(llvm::vfs::getRealFileSystem()));  in buildASTFromCodeWithArgs()
634   OverlayFileSystem->pushOverlay(InMemoryFileSystem);  in buildASTFromCodeWithArgs()
636       new FileManager(FileSystemOptions(), OverlayFileSystem));  in buildASTFromCodeWithArgs()