// Power of 1.5 with bucket count 45 (> 23 hours)
    {tsl::monitoring::Buckets::Exponential(1, 1.5, 45)});

// There were no MLIR ops so the old bridge was called successfully.
constexpr char kOldBridgeNoMlirSuccess[] = "kOldBridgeNoMlirSuccess";
// There were no MLIR ops so the old bridge was called but it failed.
constexpr char kOldBridgeNoMlirFailure[] = "kOldBridgeNoMlirFailure";

namespace {

  Histogram histogram =
      compilation_time.Delta("graph_old_bridge_has_function_to_hlo");

  EXPECT_EQ(histogram.num(), 1);
  EXPECT_EQ(compilation_status.Delta("kOldBridgeNoMlirSuccess"), 1);
}

TEST_F(CompileTFGraphTest, SuccessfullyCompilesWithManualSharding) {
  // MLIR module from failing test.
  constexpr char kSupportedManualSharding[] = R"(