wehub-resource-sync
92 lines
2.7 KiB
C++
92 lines
2.7 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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#pragma once
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#include "paddle/phi/kernels/funcs/eigen/common.h"
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#include "paddle/phi/kernels/funcs/eigen/eigen_function.h"
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#include "paddle/phi/kernels/reverse_kernel.h"
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namespace phi {
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template <typename Context, typename T, int Rank>
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struct ReverseFunctor {
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void operator()(const Context& dev_ctx,
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const DenseTensor& in,
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DenseTensor* out,
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const IntArray& axis) {
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auto& axis_data = axis.GetData();
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Eigen::DSizes<bool, Rank> reverse_axis;
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for (int i = 0; i < Rank; ++i) {
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reverse_axis[i] = false;
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}
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for (int a : axis_data) {
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if (a >= 0) {
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reverse_axis[a] = true;
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} else {
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reverse_axis[Rank + a] = true;
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}
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}
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auto in_eigen = EigenTensor<T, Rank>::From(in);
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auto out_eigen = EigenTensor<T, Rank>::From(*out);
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auto& dev = *dev_ctx.eigen_device();
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funcs::EigenReverse<std::decay_t<decltype(dev)>, T, Rank>::Eval(
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dev, out_eigen, in_eigen, reverse_axis);
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}
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};
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template <typename T, typename Context>
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void ReverseKernel(const Context& dev_ctx,
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const DenseTensor& x,
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const IntArray& axis,
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DenseTensor* out) {
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dev_ctx.template Alloc<T>(out);
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int rank = x.dims().size();
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switch (rank) {
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case 1:
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ReverseFunctor<Context, T, 1> functor1;
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functor1(dev_ctx, x, out, axis);
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break;
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case 2:
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ReverseFunctor<Context, T, 2> functor2;
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functor2(dev_ctx, x, out, axis);
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break;
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case 3:
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ReverseFunctor<Context, T, 3> functor3;
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functor3(dev_ctx, x, out, axis);
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break;
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case 4:
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ReverseFunctor<Context, T, 4> functor4;
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functor4(dev_ctx, x, out, axis);
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break;
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case 5:
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ReverseFunctor<Context, T, 5> functor5;
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functor5(dev_ctx, x, out, axis);
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break;
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case 6:
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ReverseFunctor<Context, T, 6> functor6;
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functor6(dev_ctx, x, out, axis);
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break;
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default:
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PADDLE_THROW(common::errors::OutOfRange(
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"The reserve operator does not support input tensors "
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"whose ranks are greater than 6."));
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}
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}
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} // namespace phi
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