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Diffstat (limited to 'src/core/CL/cl_kernels/nhwc/dequantization_layer.cl')
| -rw-r--r-- | src/core/CL/cl_kernels/nhwc/dequantization_layer.cl | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/src/core/CL/cl_kernels/nhwc/dequantization_layer.cl b/src/core/CL/cl_kernels/nhwc/dequantization_layer.cl new file mode 100644 index 0000000000..238d3a7921 --- /dev/null +++ b/src/core/CL/cl_kernels/nhwc/dequantization_layer.cl @@ -0,0 +1,87 @@ +/* + * Copyright (c) 2017-2021 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. + */ +#include "helpers.h" + +#if defined(VEC_SIZE) && defined(DATA_TYPE_SRC) && defined(DATA_TYPE_DST) +/** This performs per channel dequantization of 8-bit signed integers to floating point. (NHWC) + * + * @note Source datatype should be given as a preprocessor argument using -DDATA_TYPE_SRC=type. e.g. -DDATA_TYPE_SRC=char + * @note Destination datatype should be given as a preprocessor argument using -DDATA_TYPE_DST=type. e.g. -DDATA_TYPE_DST=float + * @note Vector size should be given as a preprocessor argument using -DVEC_SIZE=size. e.g. -DVEC_SIZE=16 + * + * @param[in] input_ptr Pointer to the source tensor. Supported data types: QSYMM8_PER_CHANNEL + * @param[in] input_stride_x Stride of the source tensor in X dimension (in bytes) + * @param[in] input_step_x input_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] input_stride_y Stride of the source tensor in Y dimension (in bytes) + * @param[in] input_step_y input_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] input_stride_z Stride of the source tensor in Z dimension (in bytes) + * @param[in] input_step_z input_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] input_offset_first_element_in_bytes The offset of the first element in the source tensor + * @param[out] output_ptr Pointer to the destination tensor. Supported data types: F16/F32 + * @param[in] output_stride_x Stride of the destination tensor in X dimension (in bytes) + * @param[in] output_step_x output_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] output_stride_y Stride of the destination tensor in Y dimension (in bytes) + * @param[in] output_step_y output_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] output_stride_z Stride of the source tensor in Z dimension (in bytes) + * @param[in] output_step_z output_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] output_offset_first_element_in_bytes The offset of the first element in the destination tensor + * @param[in] scale Pointer to buffer with the per channel quantized scales + */ +__kernel void dequantization_layer_per_channel_nhwc( + TENSOR3D_DECLARATION(input), + TENSOR3D_DECLARATION(output), + __global float *scale) +{ + // Get pixels pointer + Tensor3D input = CONVERT_TO_TENSOR3D_STRUCT(input); + Tensor3D output = CONVERT_TO_TENSOR3D_STRUCT(output); + +#if defined(LAST_ACCESSED_X) + // Check if access on width gets out of bounds + // If it does shift access vector to access elements within bounds + const int xi = (int)(get_global_id(0) * VEC_SIZE); + input.ptr -= max(xi - (int)LAST_ACCESSED_X, 0) * input_stride_x; + output.ptr -= max(xi - (int)LAST_ACCESSED_X, 0) * output_stride_x; + scale -= max(xi - (int)LAST_ACCESSED_X, 0); + + // Load data + VEC_DATA_TYPE(int, VEC_SIZE) + val = CONVERT(VLOAD(VEC_SIZE)(0, (__global DATA_TYPE_SRC *)input.ptr), VEC_DATA_TYPE(int, VEC_SIZE)); + + // Create scale vectors + const VEC_DATA_TYPE(float, VEC_SIZE) + vscale = VLOAD(VEC_SIZE)(0, &scale[xi]); + + // Dequantize + VEC_DATA_TYPE(float, VEC_SIZE) + res = vscale * CONVERT((val), VEC_DATA_TYPE(float, VEC_SIZE)); + + // Store result + VSTORE(VEC_SIZE) + (CONVERT(res, VEC_DATA_TYPE(DATA_TYPE_DST, VEC_SIZE)), 0, (__global DATA_TYPE_DST *)output.ptr); +#else // !defined(LAST_ACCESSED_X) + *((__global DATA_TYPE_DST *)(output.ptr)) = (DATA_TYPE_DST)((float)((int)(*((__global DATA_TYPE_SRC *)(input.ptr)))) * scale[get_global_id(0)]); +#endif // defined(LAST_ACCESSED_X) +} +#endif // defined(VEC_SIZE) && defined(DATA_TYPE_SRC) && defined(DATA_TYPE_DST)
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