TfLiteRegistration* Register_RNN() {
  static TfLiteRegistration r = {rnn::Init, rnn::Free, rnn::Prepare, rnn::Eval};
  return &r;
}
TfLiteRegistration* Register_RNN() {
  static TfLiteRegistration r = {rnn::Init, rnn::Free, rnn::Prepare, rnn::Eval};
  return &r;
}