// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#pragma once

#include "paddle/phi/common/scalar.h"
#include "paddle/phi/core/dense_tensor.h"
#include "paddle/phi/kernels/funcs/padding.h"
namespace phi {
template <typename T, typename Context>
void PadGradKernel(const Context& dev_ctx,
                   const DenseTensor& d_out,
                   const std::vector<int>& paddings,
                   const Scalar& pad_value UNUSED,
                   DenseTensor* d_x) {
  if (d_x == nullptr) {
    return;
  }
  dev_ctx.template Alloc<T>(d_x);
  int rank = d_out.dims().size();
  phi::funcs::PaddingGradFunctor<Context, T>(
      rank, dev_ctx, paddings, d_out, d_x);
}
}  // namespace phi
