Marat Dukhan | e76478b | 2021-06-28 16:35:40 -0700 | [diff] [blame] | 1 | // Auto-generated file. Do not edit! |
Frank Barchard | e452560 | 2021-06-29 13:50:00 -0700 | [diff] [blame] | 2 | // Template: src/qs8-igemm/c4-neondot.c.in |
Marat Dukhan | e76478b | 2021-06-28 16:35:40 -0700 | [diff] [blame] | 3 | // Generator: tools/xngen |
| 4 | // |
| 5 | // Copyright 2020 Google LLC |
| 6 | // |
| 7 | // This source code is licensed under the BSD-style license found in the |
| 8 | // LICENSE file in the root directory of this source tree. |
| 9 | |
| 10 | #include <assert.h> |
| 11 | |
| 12 | #include <arm_neon.h> |
| 13 | |
| 14 | #include <xnnpack/igemm.h> |
| 15 | #include <xnnpack/intrinsics-polyfill.h> |
| 16 | #include <xnnpack/math.h> |
| 17 | |
| 18 | |
| 19 | void xnn_qc8_igemm_minmax_fp32_ukernel_1x8c4__neondot( |
| 20 | size_t mr, |
| 21 | size_t nc, |
| 22 | size_t kc, |
| 23 | size_t ks, |
| 24 | const int8_t** restrict a, |
| 25 | const void* restrict w, |
| 26 | int8_t* restrict c, |
| 27 | size_t cm_stride, |
| 28 | size_t cn_stride, |
| 29 | size_t a_offset, |
| 30 | const int8_t* zero, |
| 31 | const union xnn_qs8_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN XNN_DISABLE_MSAN |
| 32 | { |
| 33 | assert(mr != 0); |
| 34 | assert(mr <= 1); |
| 35 | assert(nc != 0); |
| 36 | assert(kc != 0); |
| 37 | assert(ks != 0); |
| 38 | assert(ks % (1 * sizeof(void*)) == 0); |
| 39 | assert(a_offset % sizeof(int8_t) == 0); |
| 40 | assert(a != NULL); |
| 41 | assert(w != NULL); |
| 42 | assert(c != NULL); |
| 43 | |
| 44 | kc = round_up_po2(kc, 4 * sizeof(int8_t)); |
| 45 | int8_t* c0 = c; |
| 46 | |
| 47 | do { |
| 48 | int32x4_t vacc0x0123 = vld1q_s32(w); w = (const void*) ((const int32_t*) w + 4); |
| 49 | int32x4_t vacc0x4567 = vld1q_s32(w); w = (const void*) ((const int32_t*) w + 4); |
| 50 | |
| 51 | size_t p = ks; |
| 52 | do { |
| 53 | const int8_t* restrict a0 = a[0]; |
| 54 | if XNN_UNPREDICTABLE(a0 != zero) { |
| 55 | a0 = (const int8_t*) ((uintptr_t) a0 + a_offset); |
| 56 | } |
| 57 | a += 1; |
| 58 | |
| 59 | // Inner accumulation loop along the 8 columns. |
| 60 | size_t k = kc; |
| 61 | // 2x partial unrolled loop to load 8 bytes at a time. |
| 62 | while (k >= 8 * sizeof(int8_t)) { |
| 63 | // Load a 1x8 block of activations. |
| 64 | const int8x8_t va0x01234567 = vld1_s8(a0); a0 += 8; |
| 65 | |
| 66 | // Load a 8x8 block of weights. |
| 67 | const int8x16_t vb0123x0123 = vld1q_s8(w); w = (const void*) ((const int8_t*) w + 16); |
| 68 | const int8x16_t vb0123x4567 = vld1q_s8(w); w = (const void*) ((const int8_t*) w + 16); |
| 69 | const int8x16_t vb4567x0123 = vld1q_s8(w); w = (const void*) ((const int8_t*) w + 16); |
| 70 | const int8x16_t vb4567x4567 = vld1q_s8(w); w = (const void*) ((const int8_t*) w + 16); |
| 71 | |
| 72 | // Multiply-accumulate: 1x8 * 8x8 --> 1x8. |
| 73 | vacc0x0123 = vdotq_lane_s32(vacc0x0123, vb0123x0123, va0x01234567, 0); |
| 74 | vacc0x4567 = vdotq_lane_s32(vacc0x4567, vb0123x4567, va0x01234567, 0); |
| 75 | vacc0x0123 = vdotq_lane_s32(vacc0x0123, vb4567x0123, va0x01234567, 1); |
| 76 | vacc0x4567 = vdotq_lane_s32(vacc0x4567, vb4567x4567, va0x01234567, 1); |
| 77 | |
| 78 | k -= 8 * sizeof(int8_t); |
| 79 | } |
| 80 | // Handle up to 4 final positions of `k` |
| 81 | if XNN_UNLIKELY(k != 0) { |
| 82 | // Load a 1x4 block of activations. |
| 83 | const int8x8_t va0x01234567 = vld1_s8(a0); |
| 84 | |
| 85 | // Load a 4x8 block of weights. |
| 86 | const int8x16_t vb0123x0123 = vld1q_s8(w); w = (const void*) ((const int8_t*) w + 16); |
| 87 | const int8x16_t vb0123x4567 = vld1q_s8(w); w = (const void*) ((const int8_t*) w + 16); |
| 88 | |
| 89 | // Multiply-accumulate: 1x4 * 4x8 --> 1x8. |
| 90 | vacc0x0123 = vdotq_lane_s32(vacc0x0123, vb0123x0123, va0x01234567, 0); |
| 91 | vacc0x4567 = vdotq_lane_s32(vacc0x4567, vb0123x4567, va0x01234567, 0); |
| 92 | } |
| 93 | p -= 1 * sizeof(void*); |
| 94 | } while (p != 0); |
| 95 | |
| 96 | float32x4_t vfpacc0x0123 = vcvtq_f32_s32(vacc0x0123); |
| 97 | float32x4_t vfpacc0x4567 = vcvtq_f32_s32(vacc0x4567); |
| 98 | |
| 99 | const float32x4_t vscale0123 = vld1q_f32((const float*) w); w = (const void*) ((const float*) w + 4); |
| 100 | vfpacc0x0123 = vmulq_f32(vfpacc0x0123, vscale0123); |
| 101 | const float32x4_t vscale4567 = vld1q_f32((const float*) w); w = (const void*) ((const float*) w + 4); |
| 102 | vfpacc0x4567 = vmulq_f32(vfpacc0x4567, vscale4567); |
| 103 | |
| 104 | vacc0x0123 = vcvtnq_s32_f32(vfpacc0x0123); |
| 105 | vacc0x4567 = vcvtnq_s32_f32(vfpacc0x4567); |
| 106 | |
| 107 | const int16x8_t voutput_zero_point = vld1q_dup_s16(¶ms->neon.output_zero_point); |
| 108 | #if XNN_ARCH_ARM64 |
| 109 | const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point); |
| 110 | |
| 111 | int8x8_t vout0x01234567 = vqmovn_s16(vacc0x01234567); |
| 112 | #else |
| 113 | const int16x8_t vacc0x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567)), voutput_zero_point); |
| 114 | |
| 115 | int8x8_t vout0x01234567 = vqmovn_s16(vacc0x01234567); |
| 116 | #endif |
| 117 | const int8x8_t voutput_min = vld1_dup_s8(¶ms->neon.output_min); |
| 118 | const int8x8_t voutput_max = vld1_dup_s8(¶ms->neon.output_max); |
| 119 | |
| 120 | vout0x01234567 = vmax_s8(vout0x01234567, voutput_min); |
| 121 | |
| 122 | vout0x01234567 = vmin_s8(vout0x01234567, voutput_max); |
| 123 | |
| 124 | if (nc >= 8) { |
| 125 | vst1_s8(c0 + 0, vout0x01234567); |
| 126 | |
| 127 | c0 = (int8_t*) ((uintptr_t) c0 + cn_stride); |
| 128 | |
| 129 | a = (const int8_t**restrict) ((uintptr_t) a - ks); |
| 130 | |
| 131 | nc -= 8; |
| 132 | } else { |
| 133 | if (nc & 4) { |
| 134 | vst1_lane_u32(__builtin_assume_aligned(c0, 1), vreinterpret_u32_s8(vout0x01234567), 0); c0 += 4; |
| 135 | vout0x01234567 = vext_s8(vout0x01234567, vout0x01234567, 4); |
| 136 | } |
| 137 | if (nc & 2) { |
| 138 | vst1_lane_u16(__builtin_assume_aligned(c0, 1), vreinterpret_u16_s8(vout0x01234567), 0); c0 += 2; |
| 139 | vout0x01234567 = vext_s8(vout0x01234567, vout0x01234567, 2); |
| 140 | } |
| 141 | if (nc & 1) { |
| 142 | vst1_lane_s8(c0, vout0x01234567, 0); |
| 143 | } |
| 144 | |
| 145 | nc = 0; |
| 146 | } |
| 147 | } while (nc != 0); |
| 148 | } |