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2026-07-13 12:40:42 +08:00

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// Copyright (c) 2023 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.
#include "paddle/phi/kernels/flatten_kernel.h"
#include "paddle/common/flags.h"
#include "paddle/phi/backends/all_context.h"
#include "paddle/phi/core/kernel_registry.h"
#include "paddle/phi/kernels/reshape_kernel.h"
COMMON_DECLARE_bool(use_stride_kernel);
namespace phi {
template <typename Context>
void FlattenStridedKernel(const Context& dev_ctx,
const DenseTensor& x,
int start_axis UNUSED,
int stop_axis UNUSED,
DenseTensor* out) {
if (!FLAGS_use_stride_kernel) {
PADDLE_THROW(common::errors::Fatal(
"FLAGS_use_stride_kernel is closed. Strided kernel "
"be called, something wrong has happened!"));
}
ReshapeStridedKernel<Context>(
dev_ctx, x, IntArray(vectorize<int64_t>(out->dims())), out);
}
} // namespace phi
PD_REGISTER_KERNEL_FOR_ALL_BACKEND_DTYPE(flatten,
STRIDED,
phi::FlattenStridedKernel) {}