wehub-resource-sync
75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
/* Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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/elementwise_subtract_grad_kernel.h"
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#include "paddle/phi/backends/xpu/xpu_context.h"
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#include "paddle/phi/backends/xpu/xpu_header.h"
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#include "paddle/phi/core/kernel_registry.h"
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#include "paddle/phi/kernels/full_kernel.h"
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#include "paddle/phi/kernels/xpu/elementwise.h"
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namespace phi {
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template <typename T, typename Context>
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void SubtractGradKernel(const Context& dev_ctx,
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const DenseTensor& x,
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const DenseTensor& y,
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const DenseTensor& dout,
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int axis,
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DenseTensor* dx,
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DenseTensor* dy) {
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using XPUType = typename XPUTypeTrait<T>::Type;
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if (dout.numel() == 0) {
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if (dx) {
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dev_ctx.template Alloc<T>(dx);
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if (dx->numel() != 0) {
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Full<T, Context>(dev_ctx, dx->dims(), 0, dx);
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}
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}
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if (dy) {
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dev_ctx.template Alloc<T>(dy);
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if (dy->numel() != 0) {
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Full<T, Context>(dev_ctx, dy->dims(), 0, dy);
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}
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}
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return;
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}
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auto f = [](xpu::Context* xpu_ctx,
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const XPUType* x,
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const XPUType* y,
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const XPUType* z,
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const XPUType* dz,
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XPUType* dy,
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XPUType* dx,
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const std::vector<int64_t>& xshape,
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const std::vector<int64_t>& yshape) {
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return xpu::broadcast_sub_grad<XPUType>(
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xpu_ctx, x, y, z, dz, dy, dx, xshape, yshape);
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};
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phi::XPUElementwiseGrad<T, XPUType>(
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dev_ctx, x, y, dout, axis, dx, dy, f, false);
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}
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} // namespace phi
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PD_REGISTER_KERNEL(subtract_grad,
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XPU,
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ALL_LAYOUT,
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phi::SubtractGradKernel,
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phi::float16,
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phi::bfloat16,
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float) {}
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