diff options
Diffstat (limited to 'src/core/NEON/kernels/arm_gemm/transform.hpp')
| -rw-r--r-- | src/core/NEON/kernels/arm_gemm/transform.hpp | 90 |
1 files changed, 2 insertions, 88 deletions
diff --git a/src/core/NEON/kernels/arm_gemm/transform.hpp b/src/core/NEON/kernels/arm_gemm/transform.hpp index 5efeee5d35..f46e6c5fa3 100644 --- a/src/core/NEON/kernels/arm_gemm/transform.hpp +++ b/src/core/NEON/kernels/arm_gemm/transform.hpp @@ -1,5 +1,5 @@ /* - * Copyright (c) 2017-2020 Arm Limited. + * Copyright (c) 2017-2021 Arm Limited. * * SPDX-License-Identifier: MIT * @@ -27,96 +27,10 @@ namespace arm_gemm { -/* - * Generic transform. - * - * Assuming the untransposed case, this works by first reading <BlockBy> - * consecutive values from the first input row. This same number of values - * are then read from the next <IntBy-1> rows. Now return to the first - * input row and repeat. - * - * Need to cope with the work requested in either dimension not actually - * being a multiple of the block sizes. - */ -template <unsigned int tIntBy, unsigned int BlockBy, bool Transposed, size_t TOutSize, size_t TInSize, VLType vlt> -struct TransformImpl { - template <typename TOut, typename TIn> - static void Transform(TOut* out, const TIn* const in, const int stride, - const int y0, const int ymax, const int x0, const int xmax) { - // For SVE cases we multiply the interleave factor by the vector length. - const unsigned int IntBy = tIntBy * (vlt == VLType::SVE ? get_vector_length<TOut>() / BlockBy : 1); - - const int n_whole_y_blocks = (ymax - y0) / IntBy; - const int y_remainders = (ymax - y0) % IntBy; - const int n_y_blocks = n_whole_y_blocks + (y_remainders ? 1 : 0); - - const int n_whole_x_blocks = (xmax - x0) / BlockBy; - const int x_remainders = (xmax - x0) % BlockBy; - const int n_x_blocks = n_whole_x_blocks + (x_remainders ? 1 : 0); - - // "Y" loop: advance down the rows of the source IntBy rows at a time. - // Set up fill_rows to show the number rows to copy from, and blank_rows - // for the number of blank rows to add. - for (int y_block=0 ; y_block < n_y_blocks; y_block++) { - int fill_rows = (y_block < n_whole_y_blocks) ? IntBy : y_remainders; - int blank_rows = IntBy - fill_rows; - - int y_base = y0 + (y_block * IntBy); - - // So now advance along this block of rows, BlockBy columns at a time. - for (int x_block=0 ; x_block < n_x_blocks; x_block++) { - int fill_cols = (x_block < n_whole_x_blocks) ? BlockBy : x_remainders; - int blank_cols = BlockBy - fill_cols; - - int x_base = x0 + (x_block * BlockBy); - - for (int row = 0; row < fill_rows; row++) { - for (int col = 0; col < fill_cols; col++) { - // In-range copy. If it's transposed, we reverse the sense of rows and columns here. - if (Transposed) { - *out++ = static_cast<TOut>(in[(x_base + col) * stride + y_base + row]); - } else { - *out++ = static_cast<TOut>(in[(y_base + row) * stride + x_base + col]); - } - } - // "col" tail - row is in range but column is out of range. - for (int col=0; col < blank_cols; col++) { - *out++ = static_cast<TOut>(0); - } - } - // "row" tail - row is out of range so fill with zeros always. - TOut zeroval = static_cast<TOut>(0); - int pads = blank_rows * (fill_cols + blank_cols); - - for (int i=0; i<pads; i++) { - out[i] = zeroval; - } - - out += pads; - } - } - } - - template <typename T> - static inline void Transform(T* out, const T* const in, const int stride, - const int k0, const int kmax, const int x0, const int xmax) { - Transform<T, T>(out, in, stride, k0, kmax, x0, xmax); - } -}; - -/*****************************************************************************/ template <unsigned int IntBy, unsigned int BlockBy, bool Transposed, VLType vlt=VLType::None, typename TOut, typename TIn> void Transform( TOut* out, const TIn* const in, const int stride, const int k0, const int kmax, const int x0, const int xmax -) { - // Redirect to a specialised implementation predicated on argument size. - TransformImpl<IntBy, BlockBy, Transposed, sizeof(TOut), sizeof(TIn), vlt>::Transform( - out, in, stride, k0, kmax, x0, xmax - ); -} -/*****************************************************************************/ - -#include "transforms/list.hpp" +); } // namespace arm_gemm |