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paddlepaddle--paddle/paddle/phi/kernels/cpu/masked_fill_kernel.cc
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2026-07-13 12:40:42 +08:00

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// Copyright (c) 2025 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/masked_fill_kernel.h"
#include "paddle/phi/backends/gpu/gpu_context.h"
#include "paddle/phi/common/amp_type_traits.h"
#include "paddle/phi/core/kernel_registry.h"
#include "paddle/phi/kernels/expand_kernel.h"
#include "paddle/phi/kernels/funcs/common_infer_shape_functions.h"
#include "paddle/phi/kernels/funcs/common_shape.h"
namespace phi {
template <typename T, typename Context>
void MaskedFillKernel(const Context& dev_ctx,
const DenseTensor& x,
const DenseTensor& mask,
const DenseTensor& value,
DenseTensor* out) {
if (x.numel() == 0 || mask.numel() == 0) {
dev_ctx.template Alloc<T>(out);
return;
}
auto x_dims = x.dims();
auto mask_dims = mask.dims();
auto expanded_size =
vectorize(funcs::BroadcastTwoDims(x_dims, mask_dims, -1));
DenseTensor mask_expand;
DenseTensor x_expand;
DenseTensor value_expand;
DDim expand_dims = make_ddim(expanded_size);
if (mask.dims() != expand_dims) {
ExpandKernel<bool, Context>(
dev_ctx, mask, IntArray(expanded_size), &mask_expand);
} else {
mask_expand = mask;
}
if (x.dims() != expand_dims) {
ExpandKernel<T, Context>(dev_ctx, x, IntArray(expanded_size), &x_expand);
} else {
x_expand = x;
}
if (value.dims() != expand_dims && value.numel() != 1) {
ExpandKernel<T, Context>(
dev_ctx, value, IntArray(expanded_size), &value_expand);
} else {
value_expand = value;
}
auto input_data = x_expand.data<T>();
auto mask_data = mask_expand.data<bool>();
auto value_data = value_expand.data<T>();
auto x_size = x_expand.numel();
out->Resize(expand_dims);
auto out_data = dev_ctx.template HostAlloc<T>(out);
if (value.numel() == 1) {
#pragma unroll
for (int i = 0; i < x_size; i++) {
if (mask_data[i]) {
out_data[i] = value_data[0];
} else {
out_data[i] = input_data[i];
}
}
} else {
#pragma unroll
for (int i = 0; i < x_size; i++) {
if (mask_data[i]) {
out_data[i] = value_data[i];
} else {
out_data[i] = input_data[i];
}
}
}
}
} // namespace phi
PD_REGISTER_KERNEL(masked_fill,
CPU,
ALL_LAYOUT,
phi::MaskedFillKernel,
bool,
float,
double,
int,
int8_t,
int64_t,
int16_t,
uint8_t,
phi::float16,
phi::bfloat16,
phi::complex64,
phi::complex128) {
kernel->InputAt(1).SetDataType(phi::DataType::BOOL);
}