message: Enable all arithmetic optimizations by default.
diff: @@ -57,9 +57,9 @@ class ArithmeticOptimizer : public GraphOptimizer {
  // TODO(ezhulenev): flag do disable TrySimplifyAndReplaceUses in tests.
  // Remove when all optimizers will be migrated to separate stages.
  bool enable_try_simplify_and_replace = true;
  - bool combine_add_to_addn = false;
  + bool combine_add_to_addn = true;
  bool hoist_common_factor_out_of_aggregation = true;
  - bool minimize_broadcasts = false;
  + bool minimize_broadcasts = true;
  bool remove_identity_transpose = true;
  bool remove_redundant_bitcast = true;
  bool remove_redundant_cast = true;
  @@ -70,11 +70,6 @@ class ArithmeticOptimizer : public GraphOptimizer {
  static ArithmeticOptimizerOptions Default(
  RewriterConfig::Toggle opt_level) {
  ArithmeticOptimizerOptions options;
  - // TODO(ezhulenev): enable by default after 1.8 release cut
  - if (opt_level == RewriterConfig::AGGRESSIVE) {
  - options.combine_add_to_addn = true;
  - options.minimize_broadcasts = true;
  - }
  return options;
  }
  };
  