message: Use braced integer literal rather than suffixes to ensure compilation regardless of the definition of int64.
diff: @@ -25,7 +25,7 @@ PrefetchAutotuner::PrefetchAutotuner(int64 initial_buffer_size,
  : buffer_limit_(initial_buffer_size) {
  if (initial_buffer_size == model::kAutotune) {
  mode_ = Mode::kUpswing;
  - buffer_limit_ = std::max(1LL, buffer_size_min);
  + buffer_limit_ = std::max(int64{1}, buffer_size_min);
  }
  }
  