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Diffstat (limited to 'src/cpu/kernels/CpuGemmLowpQuantizeDownInt32ScaleKernel.h')
| -rw-r--r-- | src/cpu/kernels/CpuGemmLowpQuantizeDownInt32ScaleKernel.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/src/cpu/kernels/CpuGemmLowpQuantizeDownInt32ScaleKernel.h b/src/cpu/kernels/CpuGemmLowpQuantizeDownInt32ScaleKernel.h new file mode 100644 index 0000000000..33e296b251 --- /dev/null +++ b/src/cpu/kernels/CpuGemmLowpQuantizeDownInt32ScaleKernel.h @@ -0,0 +1,114 @@ +/* + * Copyright (c) 2020-2022 Arm Limited. + * + * SPDX-License-Identifier: MIT + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all + * copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef ARM_COMPUTE_CPU_GEMMLOWP_QUANTIZEDOWN_INT32_SCALE_KERNEL_H +#define ARM_COMPUTE_CPU_GEMMLOWP_QUANTIZEDOWN_INT32_SCALE_KERNEL_H + +#include "arm_compute/core/KernelDescriptors.h" + +#include "src/core/common/Macros.h" +#include "src/cpu/ICpuKernel.h" + +namespace arm_compute +{ +// Forward declarations +class ITensor; +namespace cpu +{ +namespace kernels +{ +/** Kernel used to quantize down the int32 accumulator values of GEMMLowp to QASYMM8/QASYMM8_SIGNED + * + * This kernel takes a final int32 accumulator value (the output of @ref CpuGemmLowpMatrixMultiplyKernel), and processes it to obtain the final QASYMM8/QASYMM8_SIGNED value. + * The following computations will be performed by the kernel: + * + * -# Add offset terms to final result + * -# Multiply each entry of result by result_mult_int + * -# Add bias to final result if bias tensor is not a nullptr + * -# Shift the int32 accumulator by result_shift + * -# Clamp the value between the specified min and max bounds + * -# Clamp the resulting int32 values: + * -# -to the [0..255] range and cast to QASYMM8. + * -# -to the [-128..127] range and cast to QASYMM8_SIGNED. + * + */ +class CpuGemmLowpQuantizeDownInt32ScaleKernel : public ICpuKernel<CpuGemmLowpQuantizeDownInt32ScaleKernel> +{ +public: + CpuGemmLowpQuantizeDownInt32ScaleKernel() = default; + ARM_COMPUTE_DISALLOW_COPY_ALLOW_MOVE(CpuGemmLowpQuantizeDownInt32ScaleKernel); + /** Initialise the kernel's input and output. + * + * @param[in] src Input tensor info. Data type supported: S32 + * @param[in] bias Biases tensor info. Only shared biases supported and it can be a nullptr if the biases addition is not required. + * Biases are 1D tensor with dimensions [OFM]. Data type supported: Same as @p input. + * @param[out] dst Output tensor info. Data type supported: Data type supported: QASYMM8/QASYMM8_SIGNED + * @param[out] output_stage GEMMLowp output stage metadata. + */ + void configure(ITensorInfo *src, ITensorInfo *bias, ITensorInfo *dst, const GEMMLowpOutputStageInfo *output_stage); + /** Static function to check if given info will lead to a valid configuration + * + * Similar to CpuGemmLowpQuantizeDownInt32ScaleKernel::configure() + * + * @return a status + */ + static Status validate(const ITensorInfo *src, + const ITensorInfo *bias, + const ITensorInfo *dst, + const GEMMLowpOutputStageInfo *output_stage); + + // Inherited methods overridden: + void run_op(ITensorPack &tensors, const Window &window, const ThreadInfo &info) override; + const char *name() const override; + +private: + /** Template function to run the NEGEMMLowpQuantizeDownInt32ScaleKernel + * + * @param[in] src Input tensor info + * @param[in] bias Biases tensor info + * @param[out] dst Output tensor info + * @param[in] window Region on which to execute the kernel. (Must be a valid region of the window returned by window()) + */ + template <typename T> + void run_internal(const ITensor *src, const ITensor *bias, ITensor *dst, const Window &window); + + /** Common signature for all the specialised CpuGemmLowpQuantizeDownInt32ScaleKernel functions + * + * @param[in] src Input tensor info + * @param[in] bias Biases tensor info + * @param[out] dst Output tensor info + * @param[in] window Region on which to execute the kernel. + */ + using QuantizeDownFunctionPtr = void (CpuGemmLowpQuantizeDownInt32ScaleKernel::*)(const ITensor *src, + const ITensor *bias, + ITensor *dst, + const Window &window); + + QuantizeDownFunctionPtr _func{nullptr}; + const GEMMLowpOutputStageInfo *_output_stage{nullptr}; + bool _is_bounded_relu{false}; +}; +} // namespace kernels +} // namespace cpu +} // namespace arm_compute +#endif /* ARM_COMPUTE_CPU_GEMMLOWP_QUANTIZEDOWN_INT32_SCALE_KERNEL_H */ |