* which will have an efficient native implementation in JDK 9.
       *
       */
      String arch = System.getProperty("os.arch");
      if (Objects.equals(arch, "amd64")) {
        return ByteOrder.nativeOrder().equals(ByteOrder.LITTLE_ENDIAN)
            ? UnsafeByteArray.UNSAFE_LITTLE_ENDIAN
            : UnsafeByteArray.UNSAFE_BIG_ENDIAN;
      }
    } catch (Throwable t) {
      // ensure we really catch *everything*

      "UnnecessaryJavacSuppressWarnings"
    })
    @VisibleForTesting
    enum UnsafeComparator implements LexicographicalComparator {
      INSTANCE;

      static final boolean BIG_ENDIAN = ByteOrder.nativeOrder().equals(ByteOrder.BIG_ENDIAN);

      /*
       * The following static final fields exist for performance reasons.
       *