| // 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_x2__neon( |
| size_t m, |
| size_t n, |
| size_t l, |
| size_t r, |
| uint32_t c, |
| const void* x, |
| size_t x_stride, |
| void* y, |
| size_t y_stride) |
| { |
| assert(m <= 2); |
| assert(l % 4 == 0); |
| assert(n % 4 == 0); |
| assert(r % 4 == 0); |
| |
| const uint32_t* x0 = x; |
| uint32_t* y0 = y; |
| |
| const uint32_t* x1 = (const uint32_t*) ((uintptr_t) x0 + x_stride); |
| uint32_t* y1 = (uint32_t*) ((uintptr_t) y0 + y_stride); |
| if (m != 2) { |
| x1 = x0; |
| y1 = y0; |
| } |
| const uint32x4_t vc = vmovq_n_u32(c); |
| |
| // Pre-pad input channels. |
| for (; l >= 16; l -= 16) { |
| vst1q_u32(y0, vc); y0 += 4; |
| vst1q_u32(y1, vc); y1 += 4; |
| } |
| if (l & 8) { |
| vst1_u32(y0, vget_low_u32(vc)); y0 += 2; |
| vst1_u32(y1, vget_low_u32(vc)); y1 += 2; |
| } |
| if (l & 4) { |
| vst1q_lane_u32(y0, vc, 0); y0 += 1; |
| vst1q_lane_u32(y1, vc, 0); y1 += 1; |
| } |
| |
| // Copy input channels. |
| for (; n >= 16; n -= 16) { |
| const uint32x4_t vt0 = vld1q_u32(x0); x0 += 4; |
| const uint32x4_t vt1 = vld1q_u32(x1); x1 += 4; |
| vst1q_u32(y0, vt0); y0 += 4; |
| vst1q_u32(y1, vt1); y1 += 4; |
| } |
| if (n != 0) { |
| const uint32x4_t vt0 = vld1q_u32(x0); x0 += 4; |
| const uint32x4_t vt1 = vld1q_u32(x1); x1 += 4; |
| uint32x2_t vt0lo = vget_low_u32(vt0); |
| uint32x2_t vt1lo = vget_low_u32(vt1); |
| if (n & 8) { |
| vst1_u32(y0, vt0lo); y0 += 2; |
| vst1_u32(y1, vt1lo); y1 += 2; |
| vt0lo = vget_high_u32(vt0); |
| vt1lo = vget_high_u32(vt1); |
| } |
| if (n & 4) { |
| vst1_lane_u32(y0, vt0lo, 0); y0 += 1; |
| vst1_lane_u32(y1, vt1lo, 0); y1 += 1; |
| } |
| } |
| |
| // Post-pad input channels. |
| for (; r >= 16; r -= 16) { |
| vst1q_u32(y0, vc); y0 += 4; |
| vst1q_u32(y1, vc); y1 += 4; |
| } |
| if (r & 8) { |
| vst1_u32(y0, vget_low_u32(vc)); y0 += 2; |
| vst1_u32(y1, vget_low_u32(vc)); y1 += 2; |
| } |
| if (r & 4) { |
| vst1q_lane_u32(y0, vc, 0); |
| vst1q_lane_u32(y1, vc, 0); |
| } |
| } |