wehub-resource-sync
68 lines
2.4 KiB
C++
68 lines
2.4 KiB
C++
// Copyright (c) 2023 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_kernel.h"
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#include <algorithm>
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#include "paddle/common/flags.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/kernels/funcs/strided_reshape_utils.h"
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#include "paddle/phi/kernels/funcs/strided_utils.h"
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COMMON_DECLARE_bool(use_stride_kernel);
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namespace phi {
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template <typename Context>
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void ReshapeStridedKernel(const Context& dev_ctx,
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const DenseTensor& x,
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const IntArray& shape,
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DenseTensor* out) {
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if (!FLAGS_use_stride_kernel) {
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PADDLE_THROW(common::errors::Fatal(
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"FLAGS_use_stride_kernel is closed. Strided kernel "
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"be called, something wrong has happened!"));
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}
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DDim x_dims = x.dims();
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DDim x_stride = x.strides();
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size_t x_offset = x.offset();
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MetaTensor meta_out(out);
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InferMetaFromVecValue(x, shape.GetData(), &meta_out);
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DDim stride;
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if (ReshapeStride(x_dims, x_stride, out->dims(), stride)) {
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out->set_offset(x_offset);
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out->set_strides(stride);
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out->ResetHolder(x.Holder());
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out->ShareInplaceVersionCounterWith(x);
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} else {
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DenseTensor tmp;
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DenseTensor tmp_x = x;
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tmp_x.Resize(x_dims);
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tmp_x.set_strides(x_stride);
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tmp.set_meta(tmp_x.meta());
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PD_VISIT_ALL_TYPES(x.dtype(), "ReshapeStridedKernel", ([&] {
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phi::StridedTensorContiguous<data_t>(tmp_x, &tmp);
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}));
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out->set_strides(DenseTensorMeta::calc_strides(out->dims()));
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out->set_offset(0);
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out->ResetHolder(tmp.Holder());
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}
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}
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} // namespace phi
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PD_REGISTER_KERNEL_FOR_ALL_BACKEND_DTYPE(reshape,
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STRIDED,
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phi::ReshapeStridedKernel) {}
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