std::vector<string> node_constraints;
  if (TryGetNodeAttr(attrs, kColocationAttrName, &node_constraints)) {
    for (const string& entry : node_constraints) {
      StringPiece s(entry);
      if (absl::ConsumePrefix(&s, kColocationGroupPrefix)) {
        current_constraints.emplace(s);
      }
    }
  } else {
    current_constraints.insert(colocate_with_op.node()->name());
  }
  return current_constraints;
}

        1;
    mark_for_compilation_flags->tf_xla_ops_to_cluster = "FUSIBLE";
    return true;
  }

  absl::string_view value_sv(value);
  if (!absl::ConsumePrefix(&value_sv, "single-gpu(") ||
      !absl::ConsumeSuffix(&value_sv, ")") ||
      !absl::SimpleAtoi(value_sv, &opt_level)) {
    return false;
  }