XNNPACK Team | b455b12 | 2019-09-27 18:10:33 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2019 Google LLC |
| 3 | * |
| 4 | * This source code is licensed under the BSD-style license found in the |
| 5 | * LICENSE file in the root directory of this source tree. |
| 6 | */ |
| 7 | |
| 8 | #include <assert.h> |
| 9 | |
| 10 | #include <arm_neon.h> |
| 11 | |
| 12 | #include <xnnpack/pad.h> |
| 13 | |
| 14 | |
| 15 | void xnn_x32_pad_x2__neon( |
| 16 | size_t m, |
| 17 | size_t n, |
| 18 | size_t l, |
| 19 | size_t r, |
| 20 | uint32_t c, |
| 21 | const void* x, |
| 22 | size_t x_stride, |
| 23 | void* y, |
| 24 | size_t y_stride) |
| 25 | { |
| 26 | assert(m <= 2); |
| 27 | assert(l % 4 == 0); |
| 28 | assert(n % 4 == 0); |
| 29 | assert(r % 4 == 0); |
| 30 | |
| 31 | const uint32_t* x0 = x; |
| 32 | uint32_t* y0 = y; |
| 33 | |
| 34 | const uint32_t* x1 = (const uint32_t*) ((uintptr_t) x0 + x_stride); |
| 35 | uint32_t* y1 = (uint32_t*) ((uintptr_t) y0 + y_stride); |
| 36 | if (m != 2) { |
| 37 | x1 = x0; |
| 38 | y1 = y0; |
| 39 | } |
| 40 | const uint32x4_t vc = vmovq_n_u32(c); |
| 41 | |
| 42 | /* Pre-pad input channels */ |
| 43 | for (; l >= 16; l -= 16) { |
| 44 | vst1q_u32(y0, vc); y0 += 4; |
| 45 | vst1q_u32(y1, vc); y1 += 4; |
| 46 | } |
| 47 | if (l & 8) { |
| 48 | vst1_u32(y0, vget_low_u32(vc)); y0 += 2; |
| 49 | vst1_u32(y1, vget_low_u32(vc)); y1 += 2; |
| 50 | } |
| 51 | if (l & 4) { |
| 52 | vst1q_lane_u32(y0, vc, 0); y0 += 1; |
| 53 | vst1q_lane_u32(y1, vc, 0); y1 += 1; |
| 54 | } |
| 55 | |
| 56 | /* Copy input channels */ |
| 57 | for (; n >= 16; n -= 16) { |
| 58 | const uint32x4_t vt0 = vld1q_u32(x0); x0 += 4; |
| 59 | const uint32x4_t vt1 = vld1q_u32(x1); x1 += 4; |
| 60 | vst1q_u32(y0, vt0); y0 += 4; |
| 61 | vst1q_u32(y1, vt1); y1 += 4; |
| 62 | } |
| 63 | if (n != 0) { |
| 64 | const uint32x4_t vt0 = vld1q_u32(x0); x0 += 4; |
| 65 | const uint32x4_t vt1 = vld1q_u32(x1); x1 += 4; |
| 66 | uint32x2_t vt0lo = vget_low_u32(vt0); |
| 67 | uint32x2_t vt1lo = vget_low_u32(vt1); |
| 68 | if (n & 8) { |
| 69 | vst1_u32(y0, vt0lo); y0 += 2; |
| 70 | vst1_u32(y1, vt1lo); y1 += 2; |
| 71 | vt0lo = vget_high_u32(vt0); |
| 72 | vt1lo = vget_high_u32(vt1); |
| 73 | } |
| 74 | if (n & 4) { |
| 75 | vst1_lane_u32(y0, vt0lo, 0); y0 += 1; |
| 76 | vst1_lane_u32(y1, vt1lo, 0); y1 += 1; |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | /* Post-pad input channels */ |
| 81 | for (; r >= 16; r -= 16) { |
| 82 | vst1q_u32(y0, vc); y0 += 4; |
| 83 | vst1q_u32(y1, vc); y1 += 4; |
| 84 | } |
| 85 | if (r & 8) { |
| 86 | vst1_u32(y0, vget_low_u32(vc)); y0 += 2; |
| 87 | vst1_u32(y1, vget_low_u32(vc)); y1 += 2; |
| 88 | } |
| 89 | if (r & 4) { |
| 90 | vst1q_lane_u32(y0, vc, 0); |
| 91 | vst1q_lane_u32(y1, vc, 0); |
| 92 | } |
| 93 | } |