wehub-resource-sync
83 lines
3.0 KiB
C++
83 lines
3.0 KiB
C++
// Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "paddle/phi/kernels/reshape_grad_kernel.h"
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#include "paddle/phi/backends/all_context.h"
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#include "paddle/phi/core/kernel_registry.h"
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#include "paddle/phi/core/tensor_utils.h"
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#ifdef PADDLE_WITH_XPU
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#include "paddle/phi/backends/xpu/enforce_xpu.h"
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#endif
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namespace phi {
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template <typename Context>
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void ReshapeGradKernel(const Context& dev_ctx,
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const DenseTensor& x,
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const DenseTensor& out_grad,
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DenseTensor* x_grad) {
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if (x_grad->numel() == 0) {
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dev_ctx.Alloc(x_grad, x_grad->dtype());
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return;
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}
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// NOTE: [Why not to use x.dims() ?]
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// Because inplace strategy is different between old IR and PIR,
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// we need fix it into x.dims() after cleaning old IR system.
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auto x_dims = x_grad->dims();
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phi::Copy(dev_ctx, out_grad, dev_ctx.GetPlace(), false, x_grad);
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x_grad->Resize(x_dims);
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}
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#ifdef PADDLE_WITH_XPU
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template <>
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void ReshapeGradKernel<XPUContext>(const XPUContext& dev_ctx,
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const DenseTensor& x,
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const DenseTensor& out_grad,
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DenseTensor* x_grad) {
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if (x_grad->numel() == 0) {
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dev_ctx.Alloc(x_grad, x_grad->dtype());
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return;
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}
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auto x_dims = x_grad->dims();
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dev_ctx.Alloc(x_grad, out_grad.dtype());
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auto* src_ptr = out_grad.data();
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auto* dst_ptr = x_grad->data();
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auto size = out_grad.numel() * phi::SizeOf(out_grad.dtype());
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int ret = xpu::copy(dev_ctx.x_context(),
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reinterpret_cast<const int8_t*>(src_ptr),
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reinterpret_cast<int8_t*>(dst_ptr),
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size);
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PADDLE_ENFORCE_XDNN_SUCCESS(ret, "copy");
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x_grad->Resize(x_dims);
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}
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#endif
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template <typename Context>
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void ReshapeDoubleGradKernel(const Context& dev_ctx,
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const DenseTensor& out_grad,
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const DenseTensor& x_grad_grad,
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DenseTensor* out_grad_grad) {
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ReshapeGradKernel(dev_ctx, out_grad, x_grad_grad, out_grad_grad);
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}
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} // namespace phi
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PD_REGISTER_KERNEL_FOR_ALL_BACKEND_DTYPE(reshape_grad,
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ALL_LAYOUT,
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phi::ReshapeGradKernel) {}
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PD_REGISTER_KERNEL_FOR_ALL_BACKEND_DTYPE(reshape_double_grad,
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ALL_LAYOUT,
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phi::ReshapeDoubleGradKernel) {}
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