| /* |
| * Copyright (c) 2022-2024 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 <cstddef> |
| #include <arm_neon.h> |
| |
| namespace arm_conv { |
| namespace winograd { |
| namespace input_transform { |
| |
| void arm_fp32_1x8( |
| const unsigned int n_channels, |
| const float * input_base, |
| size_t, // We don't need to stride over rows |
| size_t input_col_stride, |
| float *outptr, |
| size_t matrix_stride |
| ) |
| { |
| constexpr int inner_tile_cols = 8; |
| |
| // Get pointers into the input tile |
| const float *x_ptrs[inner_tile_cols]; |
| for (int j = 0, xj = 0; j < inner_tile_cols; j++, xj++) |
| { |
| x_ptrs[j] = input_base + xj*input_col_stride; |
| } |
| |
| // Vectors used/computed in this kernel. |
| float x[inner_tile_cols]; |
| float U[inner_tile_cols]; |
| |
| for (int j = 0; j < inner_tile_cols; j++) |
| { |
| x[j] = 0.0f; |
| } |
| |
| // Perform the Winograd input transformation for each channel in the input |
| // tensor. |
| int channels_remaining = n_channels; |
| for (; channels_remaining >= 4; channels_remaining -= 4) |
| { |
| float32x4_t x[inner_tile_cols], U[inner_tile_cols]; |
| for (int j = 0; j < inner_tile_cols; j++) |
| { |
| x[j] = vdupq_n_f32(0.0f); |
| } |
| |
| // Load x |
| for (int j = 0; j < inner_tile_cols; j++) |
| { |
| x[j] = vld1q_f32(x_ptrs[j]); |
| x_ptrs[j] += 4; |
| } |
| |
| // Compute U = x . X |
| U[0] = vmlaq_n_f32(vmlaq_n_f32(vmlaq_n_f32(vmulq_n_f32(x[6], 1), x[2], 49), x[4], -14), x[0], -36); |
| U[1] = vmlaq_n_f32(vmlaq_n_f32(vmlaq_n_f32(vmlaq_n_f32(vmlaq_n_f32(vmulq_n_f32(x[6], 1), x[2], 36), x[3], 13), x[4], -13), x[1], -36), x[5], -1); |
| U[2] = vmlaq_n_f32(vmlaq_n_f32(vmlaq_n_f32(vmlaq_n_f32(vmlaq_n_f32(vmulq_n_f32(x[6], 1), x[5], 1), x[2], 36), x[1], 36), x[4], -13), x[3], -13); |
| U[3] = vmlaq_n_f32(vmlaq_n_f32(vmlaq_n_f32(vmlaq_n_f32(vmlaq_n_f32(vmulq_n_f32(x[6], 1), x[3], 20), x[2], 9), x[5], -2), x[4], -10), x[1], -18); |
| U[4] = vmlaq_n_f32(vmlaq_n_f32(vmlaq_n_f32(vmlaq_n_f32(vmlaq_n_f32(vmulq_n_f32(x[6], 1), x[1], 18), x[2], 9), x[5], 2), x[4], -10), x[3], -20); |
| U[5] = vmlaq_n_f32(vmlaq_n_f32(vmlaq_n_f32(vmlaq_n_f32(vmlaq_n_f32(vmulq_n_f32(x[6], 1), x[3], 15), x[2], 4), x[5], -3), x[4], -5), x[1], -12); |
| U[6] = vmlaq_n_f32(vmlaq_n_f32(vmlaq_n_f32(vmlaq_n_f32(vmlaq_n_f32(vmulq_n_f32(x[6], 1), x[1], 12), x[2], 4), x[5], 3), x[4], -5), x[3], -15); |
| U[7] = vmlaq_n_f32(vmlaq_n_f32(vmlaq_n_f32(vmulq_n_f32(x[7], 1), x[3], 49), x[5], -14), x[1], -36); |
| |
| // Store the transformed vector |
| for (int j = 0; j < inner_tile_cols; j++) |
| { |
| vst1q_f32(outptr + j*matrix_stride, U[j]); |
| } |
| outptr += 4; |
| } |
| for (; channels_remaining >= 2; channels_remaining -= 2) |
| { |
| float32x2_t x[inner_tile_cols], U[inner_tile_cols]; |
| for (int j = 0; j < inner_tile_cols; j++) |
| { |
| x[j] = vdup_n_f32(0.0f); |
| } |
| |
| // Load x |
| for (int j = 0; j < inner_tile_cols; j++) |
| { |
| x[j] = vld1_f32(x_ptrs[j]); |
| x_ptrs[j] += 2; |
| } |
| |
| // Compute U = x . X |
| U[0] = vmla_n_f32(vmla_n_f32(vmla_n_f32(vmul_n_f32(x[6], 1), x[2], 49), x[4], -14), x[0], -36); |
| U[1] = vmla_n_f32(vmla_n_f32(vmla_n_f32(vmla_n_f32(vmla_n_f32(vmul_n_f32(x[6], 1), x[2], 36), x[3], 13), x[4], -13), x[1], -36), x[5], -1); |
| U[2] = vmla_n_f32(vmla_n_f32(vmla_n_f32(vmla_n_f32(vmla_n_f32(vmul_n_f32(x[6], 1), x[5], 1), x[2], 36), x[1], 36), x[4], -13), x[3], -13); |
| U[3] = vmla_n_f32(vmla_n_f32(vmla_n_f32(vmla_n_f32(vmla_n_f32(vmul_n_f32(x[6], 1), x[3], 20), x[2], 9), x[5], -2), x[4], -10), x[1], -18); |
| U[4] = vmla_n_f32(vmla_n_f32(vmla_n_f32(vmla_n_f32(vmla_n_f32(vmul_n_f32(x[6], 1), x[1], 18), x[2], 9), x[5], 2), x[4], -10), x[3], -20); |
| U[5] = vmla_n_f32(vmla_n_f32(vmla_n_f32(vmla_n_f32(vmla_n_f32(vmul_n_f32(x[6], 1), x[3], 15), x[2], 4), x[5], -3), x[4], -5), x[1], -12); |
| U[6] = vmla_n_f32(vmla_n_f32(vmla_n_f32(vmla_n_f32(vmla_n_f32(vmul_n_f32(x[6], 1), x[1], 12), x[2], 4), x[5], 3), x[4], -5), x[3], -15); |
| U[7] = vmla_n_f32(vmla_n_f32(vmla_n_f32(vmul_n_f32(x[7], 1), x[3], 49), x[5], -14), x[1], -36); |
| |
| // Store the transformed vector |
| for (int j = 0; j < inner_tile_cols; j++) |
| { |
| vst1_f32(outptr + j*matrix_stride, U[j]); |
| } |
| outptr += 2; |
| } |
| for (; channels_remaining; channels_remaining--) |
| { |
| // Load x |
| for (int j = 0; j < inner_tile_cols; j++) |
| { |
| x[j] = *(x_ptrs[j]++); |
| } |
| |
| // Compute U = x . X |
| U[0] = x[0]*-36 + x[4]*-14 + x[2]*49 + x[6]*1; |
| U[1] = x[5]*-1 + x[1]*-36 + x[4]*-13 + x[3]*13 + x[2]*36 + x[6]*1; |
| U[2] = x[3]*-13 + x[4]*-13 + x[1]*36 + x[2]*36 + x[5]*1 + x[6]*1; |
| U[3] = x[1]*-18 + x[4]*-10 + x[5]*-2 + x[2]*9 + x[3]*20 + x[6]*1; |
| U[4] = x[3]*-20 + x[4]*-10 + x[5]*2 + x[2]*9 + x[1]*18 + x[6]*1; |
| U[5] = x[1]*-12 + x[4]*-5 + x[5]*-3 + x[2]*4 + x[3]*15 + x[6]*1; |
| U[6] = x[3]*-15 + x[4]*-5 + x[5]*3 + x[2]*4 + x[1]*12 + x[6]*1; |
| U[7] = x[1]*-36 + x[5]*-14 + x[3]*49 + x[7]*1; |
| |
| // Store the transformed vector |
| for (int j = 0; j < inner_tile_cols; j++) |
| { |
| *(outptr + j*matrix_stride) = U[j]; |
| } |
| outptr++; |
| } |
| } |
| |
| } // namespace input_transform |
| } // namespace winograd |
| } // namespace arm_conv |