Function ConcatV2Grad

tensorflow/cc/gradients/array_grad.cc:551–558

}

Status ConcatV2Grad(const Scope& scope, const Operation& op,
                    const std::vector<Output>& grad_inputs,
                    std::vector<Output>* grad_outputs) {
  return ConcatGradHelper(scope, op, grad_inputs, grad_outputs,
                          /*start_value_index=*/0,
                          /*end_value_index=*/op.num_inputs() - 1,
                          /*dim+index=*/op.num_inputs() - 1);
}

REGISTER_GRADIENT_OP("ConcatV2", ConcatV2Grad);