| // Copyright 2019 Google LLC |
| // |
| // This source code is licensed under the BSD-style license found in the |
| // LICENSE file in the root directory of this source tree. |
| |
| #include <assert.h> |
| |
| #include <arm_neon.h> |
| |
| #include <xnnpack/pad.h> |
| |
| |
| void xnn_x32_pad_ukernel__neon( |
| size_t rows, |
| size_t channels, |
| size_t pre_padding, |
| size_t post_padding, |
| const uint32_t* fill_value, |
| const uint32_t* input, |
| size_t input_stride, |
| uint32_t* output, |
| size_t output_stride) XNN_DISABLE_TSAN |
| { |
| assert(channels % sizeof(uint32_t) == 0); |
| assert(pre_padding % sizeof(uint32_t) == 0); |
| assert(post_padding % sizeof(uint32_t) == 0); |
| assert(fill_value != NULL); |
| |
| const size_t input_increment = input_stride - channels; |
| const size_t output_increment = output_stride - (pre_padding + channels + post_padding); |
| |
| const uint32x4_t vfill = vld1q_dup_u32(fill_value); |
| do { |
| // Pre-pad input channels. |
| size_t l = pre_padding; |
| if XNN_LIKELY(l != 0) { |
| for (; l >= 4 * sizeof(uint32_t); l -= 4 * sizeof(uint32_t)) { |
| vst1q_u32(output, vfill); output += 4; |
| } |
| if (l & (2 * sizeof(uint32_t))) { |
| vst1_u32(output, vget_low_u32(vfill)); output += 2; |
| } |
| if (l & sizeof(uint32_t)) { |
| vst1q_lane_u32(output, vfill, 0); output += 1; |
| } |
| } |
| |
| // Copy input channels. |
| size_t c = channels; |
| for (; c >= 4 * sizeof(uint32_t); c -= 4 * sizeof(uint32_t)) { |
| const uint32x4_t vtmp = vld1q_u32(input); input += 4; |
| vst1q_u32(output, vtmp); output += 4; |
| } |
| if XNN_UNLIKELY(c != 0) { |
| uint32x4_t vtmp = vld1q_u32(input); |
| input = (const void*) ((uintptr_t) input + c); |
| |
| uint32x2_t vtmp_lo = vget_low_u32(vtmp); |
| if (c & (2 * sizeof(uint32_t))) { |
| vst1_u32(output, vtmp_lo); output += 2; |
| vtmp_lo = vget_high_u32(vtmp); |
| } |
| if (c & sizeof(uint32_t)) { |
| vst1_lane_u32(output, vtmp_lo, 0); output += 1; |
| } |
| } |
| |
| // Post-pad input channels. |
| size_t r = post_padding; |
| if XNN_LIKELY(r != 0) { |
| for (; r >= 4 * sizeof(uint32_t); r -= 4 * sizeof(uint32_t)) { |
| vst1q_u32(output, vfill); output += 4; |
| } |
| if (r & (2 * sizeof(uint32_t))) { |
| vst1_u32(output, vget_low_u32(vfill)); output += 2; |
| } |
| if (r & sizeof(uint32_t)) { |
| vst1q_lane_u32(output, vfill, 0); output += 1; |
| } |
| } |
| |
| input = (const uint32_t*) ((uintptr_t) input + input_increment); |
| output = (uint32_t*) ((uintptr_t) output + output_increment); |
| } while (--rows != 0); |
| } |