}
  }

  // Populate var_access_info.old_to_new_output_mapping.
  int new_output_index = 0;
  var_access_info.old_to_new_output_mapping.resize(
      execute_launch.getNumResults());
  for (int i = 0, end = execute_launch.getNumResults(); i < end; ++i) {
    if (output_merged[i]) {
      var_access_info.old_to_new_output_mapping[i] = -1;
    } else {