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author | Luca Foschiani <luca.foschiani@arm.com> | 2020-02-13 15:07:36 +0000 |
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committer | Luca Foschiani <luca.foschiani@arm.com> | 2020-03-26 12:31:14 +0000 |
commit | 4b869532f8b2aa7f02aa55c4f4813e994ea2df68 (patch) | |
tree | 318506b8c5933165b1fe6d054fc7beec79c6a0f5 /arm_compute/core/NEON/kernels/NEGEMMLowpQuantizeDownInt32ScaleKernel.h | |
parent | 1b14c75c0d591c4abe4d2d41b7e4e165fbf58382 (diff) | |
download | ComputeLibrary-4b869532f8b2aa7f02aa55c4f4813e994ea2df68.tar.gz |
COMPMID-2966 Add support for QASYMM8_SIGNED in NEGEMMLowpQuantizeDownInt32ToUint8ScaleKernel
Signed-off-by: Luca Foschiani <luca.foschiani@arm.com>
Change-Id: Ia8692f8fda16fa3b73f343e4b5b1b55e14403225
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/2750
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Diffstat (limited to 'arm_compute/core/NEON/kernels/NEGEMMLowpQuantizeDownInt32ScaleKernel.h')
-rw-r--r-- | arm_compute/core/NEON/kernels/NEGEMMLowpQuantizeDownInt32ScaleKernel.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/arm_compute/core/NEON/kernels/NEGEMMLowpQuantizeDownInt32ScaleKernel.h b/arm_compute/core/NEON/kernels/NEGEMMLowpQuantizeDownInt32ScaleKernel.h new file mode 100644 index 0000000000..b4a1419c9b --- /dev/null +++ b/arm_compute/core/NEON/kernels/NEGEMMLowpQuantizeDownInt32ScaleKernel.h @@ -0,0 +1,112 @@ +/* + * Copyright (c) 2020 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_NEGEMMLOWPQUANTIZEDOWNINT32SCALEKERNEL_H +#define ARM_COMPUTE_NEGEMMLOWPQUANTIZEDOWNINT32SCALEKERNEL_H + +#include "arm_compute/core/NEON/INEKernel.h" + +namespace arm_compute +{ +class ITensor; + +/** NEON 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 NEGEMMLowpMatrixMultiplyKernel), 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 NEGEMMLowpQuantizeDownInt32ScaleKernel : public INEKernel +{ +public: + const char *name() const override + { + return "NEGEMMLowpQuantizeDownInt32ScaleKernel"; + } + /** Constructor */ + NEGEMMLowpQuantizeDownInt32ScaleKernel(); + /** Prevent instances of this class from being copied (As this class contains pointers)*/ + NEGEMMLowpQuantizeDownInt32ScaleKernel(const NEGEMMLowpQuantizeDownInt32ScaleKernel &) = delete; + /** Prevent instances of this class from being copied (As this class contains pointers)*/ + NEGEMMLowpQuantizeDownInt32ScaleKernel &operator=(const NEGEMMLowpQuantizeDownInt32ScaleKernel &) = delete; + /** Allow instances of this class to be moved */ + NEGEMMLowpQuantizeDownInt32ScaleKernel(NEGEMMLowpQuantizeDownInt32ScaleKernel &&) = default; + /** Allow instances of this class to be moved */ + NEGEMMLowpQuantizeDownInt32ScaleKernel &operator=(NEGEMMLowpQuantizeDownInt32ScaleKernel &&) = default; + /** Initialise the kernel's input and output. + * + * @param[in] input Input tensor. Data type supported: S32 + * @param[in] bias Biases tensor. 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] output Output tensor. Data type supported: Data type supported: QASYMM8/QASYMM8_SIGNED + * @param[out] output_stage GEMMLowp output stage metadata. + */ + void configure(const ITensor *input, const ITensor *bias, ITensor *output, const GEMMLowpOutputStageInfo *output_stage); + /** Static function to check if given info will lead to a valid configuration of @ref NEGEMMLowpQuantizeDownInt32ScaleKernel + * + * @param[in] input Input tensor. Data type supported: S32 + * @param[in] bias Biases tensor. 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[in] output Output tensor. Data type supported: Data type supported: QASYMM8/QASYMM8_SIGNED + * @param[out] output_stage GEMMLowp output stage metadata. + * + * @return a status + */ + static Status validate(const ITensorInfo *input, const ITensorInfo *bias, const ITensorInfo *output, const GEMMLowpOutputStageInfo *output_stage); + + // Inherited methods overridden: + void run(const Window &window, const ThreadInfo &info) override; + +private: + /** Template function to run the NEGEMMLowpQuantizeDownInt32ScaleKernel + * + * @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(const Window &window); + + /** Common signature for all the specialised NEGEMMLowpQuantizeDownInt32ScaleKernel functions + * + * @param[in] window Region on which to execute the kernel. + */ + using QuantizeDownFunctionPtr = void (NEGEMMLowpQuantizeDownInt32ScaleKernel::*)(const Window &window); + + QuantizeDownFunctionPtr _func; + const ITensor *_input; + const ITensor *_bias; + ITensor *_output; + const GEMMLowpOutputStageInfo *_output_stage; + bool _is_bounded_relu; +}; +} // namespace arm_compute + +#endif /* ARM_COMPUTE_NEGEMMLOWPQUANTIZEDOWNINT32SCALEKERNEL_H */ |