99     llvm::Optional<llvm::StringRef> WinSysRoot, std::string &Path, int &Major,  in getWindowsSDKDirViaCommandLine()  argument
101   if (WinSdkDir || WinSysRoot) {  in getWindowsSDKDirViaCommandLine()
108     if (WinSysRoot) {  in getWindowsSDKDirViaCommandLine()
109       llvm::SmallString<128> SDKPath(*WinSysRoot);  in getWindowsSDKDirViaCommandLine()
398                       Optional<StringRef> WinSysRoot, std::string &Path,  in getWindowsSDKDir()  argument
402   if (getWindowsSDKDirViaCommandLine(VFS, WinSdkDir, WinSdkVersion, WinSysRoot,  in getWindowsSDKDir()
453                            Optional<StringRef> WinSysRoot, std::string &Path,  in getUniversalCRTSdkDir()  argument
458   if (getWindowsSDKDirViaCommandLine(VFS, WinSdkDir, WinSdkVersion, WinSysRoot,  in getUniversalCRTSdkDir()
478                                    Optional<StringRef> WinSysRoot,  in findVCToolChainViaCommandLine()  argument
482   if (VCToolsDir || WinSysRoot) {  in findVCToolChainViaCommandLine()
483     if (WinSysRoot) {  in findVCToolChainViaCommandLine()
484       SmallString<128> ToolsPath(*WinSysRoot);  in findVCToolChainViaCommandLine()