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paddlepaddle--paddle/paddle/phi/kernels/xpu/linspace_kernel.cc
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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/linspace_kernel.h"
#include "paddle/phi/backends/xpu/enforce_xpu.h"
#include "paddle/phi/core/kernel_registry.h"
#include "paddle/phi/kernels/funcs/data_type_transform.h"
namespace phi {
template <typename T, typename Context>
T GetValueOfExpectedType(const Context& dev_ctx, const DenseTensor& x) {
switch (x.dtype()) {
case DataType::FLOAT32:
return static_cast<T>(GetValue<float, Context>(dev_ctx, x));
case DataType::FLOAT64:
return static_cast<T>(GetValue<double, Context>(dev_ctx, x));
case DataType::INT32:
return static_cast<T>(GetValue<int32_t, Context>(dev_ctx, x));
case DataType::INT64:
return static_cast<T>(GetValue<int64_t, Context>(dev_ctx, x));
case DataType::FLOAT16:
return static_cast<T>(GetValue<phi::float16, Context>(dev_ctx, x));
case DataType::BFLOAT16:
return static_cast<T>(GetValue<phi::bfloat16, Context>(dev_ctx, x));
case DataType::BOOL:
return static_cast<T>(GetValue<bool, Context>(dev_ctx, x));
case DataType::INT16:
return static_cast<T>(GetValue<int16_t, Context>(dev_ctx, x));
case DataType::INT8:
return static_cast<T>(GetValue<int8_t, Context>(dev_ctx, x));
case DataType::UINT8:
return static_cast<T>(GetValue<uint8_t, Context>(dev_ctx, x));
default:
PADDLE_THROW(common::errors::Unimplemented(
"Data type (%s) is not supported when casting data type.",
x.dtype()));
}
}
template <typename T, typename Context>
void LinspaceKernel(const Context& dev_ctx,
const DenseTensor& start,
const DenseTensor& stop,
const DenseTensor& number,
DataType dtype,
DenseTensor* out) {
using XPUType = typename XPUTypeTrait<T>::Type;
T start_value = GetValueOfExpectedType<T, Context>(dev_ctx, start);
T stop_value = GetValueOfExpectedType<T, Context>(dev_ctx, stop);
int64_t num = GetValueOfExpectedType<int64_t, Context>(dev_ctx, number);
PADDLE_ENFORCE_GE(num,
0,
common::errors::InvalidArgument(
"The num of linspace op should be larger "
"than or equal to 0, but received num is %d",
num));
out->Resize({num});
T* out_data = dev_ctx.template Alloc<T>(out);
if (num == 0) {
return;
}
int r = xpu::linspace(dev_ctx.x_context(),
reinterpret_cast<XPUType*>(out_data),
static_cast<XPUType>(start_value),
static_cast<XPUType>(stop_value),
num);
PADDLE_ENFORCE_XDNN_SUCCESS(r, "linspace");
}
} // namespace phi
PD_REGISTER_KERNEL(linspace,
XPU,
ALL_LAYOUT,
phi::LinspaceKernel,
float,
phi::float16,
phi::bfloat16,
int8_t,
uint8_t,
int16_t,
int32_t,
int64_t) {
kernel->InputAt(0).SetBackend(phi::Backend::ALL_BACKEND);
kernel->InputAt(1).SetBackend(phi::Backend::ALL_BACKEND);
kernel->InputAt(2).SetBackend(phi::Backend::ALL_BACKEND);
}