old_to_new_IfRegion_map);
    }
  }
}

// Groups IfRegions by common predicate and attemps to merge them.
void OptimizeIfRegions(Block* block, ModuleOp module) {
  // Do side effect analysis only one time in the beginning
  auto side_effect_analysis = std::make_unique<TF::SideEffectAnalysis>(module);