namespace device_compiler_internal {
// Print something that users can search for to definitively ascertain that XLA
// was used for their TF model.
// Prints only once to avoid spamming LOG(INFO).
inline void LogOnceXlaCompiledFirstCluster() {
  static absl::once_flag log_once;
  absl::call_once(log_once, [] {
    LOG(INFO) << "Compiled cluster using XLA!  This line is logged at most "
                 "once for the lifetime of the process.";