1 // Auto-generated file. Do not edit!
2 // Template: src/qu8-igemm/c4-neondot.c.in
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/math.h>
16
17
xnn_qu8_igemm_minmax_rndnu_ukernel_1x16c4__neondot(size_t mr,size_t nc,size_t kc,size_t ks,const uint8_t ** restrict a,const void * restrict w,uint8_t * restrict c,size_t cm_stride,size_t cn_stride,size_t a_offset,const uint8_t * zero,const union xnn_qu8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS (1)])18 void xnn_qu8_igemm_minmax_rndnu_ukernel_1x16c4__neondot(
19 size_t mr,
20 size_t nc,
21 size_t kc,
22 size_t ks,
23 const uint8_t** restrict a,
24 const void* restrict w,
25 uint8_t* restrict c,
26 size_t cm_stride,
27 size_t cn_stride,
28 size_t a_offset,
29 const uint8_t* zero,
30 const union xnn_qu8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
31 {
32 assert(mr != 0);
33 assert(mr <= 1);
34 assert(nc != 0);
35 assert(kc != 0);
36 assert(ks != 0);
37 assert(ks % (1 * sizeof(void*)) == 0);
38 assert(a_offset % sizeof(uint8_t) == 0);
39 assert(a != NULL);
40 assert(w != NULL);
41 assert(c != NULL);
42
43 kc = round_up_po2(kc, 4 * sizeof(uint8_t));
44 uint8_t* c0 = c;
45
46 const uint8x8_t va_zero_point = vld1_dup_u8(¶ms->rndnu_neon.kernel_zero_point[0]);
47
48 do {
49 // Initialize accumulators with bias. 16 bias values are loaded from the
50 // weight matrix, at the start of the group of 16 columns.
51 uint32x4_t vpacc0x0123 = vld1q_u32(w); w = (const void*) ((const uint32_t*) w + 4);
52 uint32x4_t vpacc0x4567 = vld1q_u32(w); w = (const void*) ((const uint32_t*) w + 4);
53 uint32x4_t vpacc0x89AB = vld1q_u32(w); w = (const void*) ((const uint32_t*) w + 4);
54 uint32x4_t vpacc0xCDEF = vld1q_u32(w); w = (const void*) ((const uint32_t*) w + 4);
55 uint32x2_t vnacc0 = vmov_n_u32(0);
56
57 size_t p = ks;
58 do {
59 const uint8_t* restrict a0 = a[0];
60 if XNN_UNPREDICTABLE(a0 != zero) {
61 a0 = (const uint8_t*) ((uintptr_t) a0 + a_offset);
62 }
63 a += 1;
64
65 // Inner accumulation loop along the 16 columns.
66 size_t k = kc;
67 // 2x partial unrolled loop to load 8 bytes at a time.
68 while (k >= 8 * sizeof(uint8_t)) {
69 // Load a 1x8 block of activations.
70 const uint8x8_t va0x01234567 = vld1_u8(a0); a0 += 8;
71
72 // Load a 8x16 block of weights.
73 const uint8x16_t vb0123x0123 = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
74 const uint8x16_t vb0123x4567 = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
75 const uint8x16_t vb0123x89AB = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
76 const uint8x16_t vb0123xCDEF = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
77 const uint8x16_t vb4567x0123 = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
78 const uint8x16_t vb4567x4567 = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
79 const uint8x16_t vb4567x89AB = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
80 const uint8x16_t vb4567xCDEF = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
81
82 // Multiply-accumulate: 1x8 * 8x16 --> 1x16.
83 vnacc0 = vdot_u32(vnacc0, va_zero_point, va0x01234567);
84 vpacc0x0123 = vdotq_lane_u32(vpacc0x0123, vb0123x0123, va0x01234567, 0);
85 vpacc0x4567 = vdotq_lane_u32(vpacc0x4567, vb0123x4567, va0x01234567, 0);
86 vpacc0x89AB = vdotq_lane_u32(vpacc0x89AB, vb0123x89AB, va0x01234567, 0);
87 vpacc0xCDEF = vdotq_lane_u32(vpacc0xCDEF, vb0123xCDEF, va0x01234567, 0);
88 vpacc0x0123 = vdotq_lane_u32(vpacc0x0123, vb4567x0123, va0x01234567, 1);
89 vpacc0x4567 = vdotq_lane_u32(vpacc0x4567, vb4567x4567, va0x01234567, 1);
90 vpacc0x89AB = vdotq_lane_u32(vpacc0x89AB, vb4567x89AB, va0x01234567, 1);
91 vpacc0xCDEF = vdotq_lane_u32(vpacc0xCDEF, vb4567xCDEF, va0x01234567, 1);
92
93 k -= 8 * sizeof(uint8_t);
94 }
95 // Handle up to 4 final positions of `k`
96 if XNN_UNLIKELY(k != 0) {
97 // Load a 1x4 block of activations.
98 const uint8x8_t va0x01234567 = vreinterpret_u8_u32(vld1_lane_u32((const void*) a0, vmov_n_u32(0), 0)); a0 += 4;
99
100 // Load a 4x16 block of weights.
101 const uint8x16_t vb0123x0123 = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
102 const uint8x16_t vb0123x4567 = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
103 const uint8x16_t vb0123x89AB = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
104 const uint8x16_t vb0123xCDEF = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
105
106 // Multiply-accumulate: 1x4 * 4x16 --> 1x16.
107 vnacc0 = vdot_u32(vnacc0, va_zero_point, va0x01234567);
108 vpacc0x0123 = vdotq_lane_u32(vpacc0x0123, vb0123x0123, va0x01234567, 0);
109 vpacc0x4567 = vdotq_lane_u32(vpacc0x4567, vb0123x4567, va0x01234567, 0);
110 vpacc0x89AB = vdotq_lane_u32(vpacc0x89AB, vb0123x89AB, va0x01234567, 0);
111 vpacc0xCDEF = vdotq_lane_u32(vpacc0xCDEF, vb0123xCDEF, va0x01234567, 0);
112 }
113 p -= 1 * sizeof(void*);
114 } while (p != 0);
115
116 // Subtract zero point from accumulators.
117 vnacc0 = vpadd_u32(vnacc0, vnacc0);
118 const uint32x4_t vnacc0x0123 = vcombine_u32(vnacc0, vnacc0);
119 int32x4_t vacc0x0123 = vreinterpretq_s32_u32(vsubq_u32(vpacc0x0123, vnacc0x0123));
120 int32x4_t vacc0x4567 = vreinterpretq_s32_u32(vsubq_u32(vpacc0x4567, vnacc0x0123));
121 int32x4_t vacc0x89AB = vreinterpretq_s32_u32(vsubq_u32(vpacc0x89AB, vnacc0x0123));
122 int32x4_t vacc0xCDEF = vreinterpretq_s32_u32(vsubq_u32(vpacc0xCDEF, vnacc0x0123));
123
124 const int32x4_t vright_pre_shift = vld1q_dup_s32(¶ms->rndnu_neon.right_pre_shift);
125 const int32x4_t vmultiplier = vld1q_dup_s32(¶ms->rndnu_neon.multiplier);
126 const int32x4_t vright_post_shift = vld1q_dup_s32(¶ms->rndnu_neon.right_post_shift);
127
128 vacc0x0123 = vshlq_s32(vacc0x0123, vright_pre_shift);
129 vacc0x4567 = vshlq_s32(vacc0x4567, vright_pre_shift);
130 vacc0x89AB = vshlq_s32(vacc0x89AB, vright_pre_shift);
131 vacc0xCDEF = vshlq_s32(vacc0xCDEF, vright_pre_shift);
132
133 vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
134 vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
135 vacc0x89AB = vqdmulhq_s32(vacc0x89AB, vmultiplier);
136 vacc0xCDEF = vqdmulhq_s32(vacc0xCDEF, vmultiplier);
137
138 vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
139 vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
140 vacc0x89AB = vrshlq_s32(vacc0x89AB, vright_post_shift);
141 vacc0xCDEF = vrshlq_s32(vacc0xCDEF, vright_post_shift);
142
143 const int16x8_t voutput_zero_point = vld1q_dup_s16(¶ms->rndnu_neon.output_zero_point);
144 #if XNN_ARCH_ARM64
145 const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
146 const int16x8_t vacc0x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x89AB), vacc0xCDEF), voutput_zero_point);
147
148 uint8x16_t vout0x0123456789ABCDEF = vqmovun_high_s16(vqmovun_s16(vacc0x01234567), vacc0x89ABCDEF);
149 #else
150 const int16x8_t vacc0x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567)), voutput_zero_point);
151 const int16x8_t vacc0x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x89AB), vqmovn_s32(vacc0xCDEF)), voutput_zero_point);
152
153 uint8x16_t vout0x0123456789ABCDEF = vcombine_u8(vqmovun_s16(vacc0x01234567), vqmovun_s16(vacc0x89ABCDEF));
154 #endif
155 const uint8x16_t voutput_min = vld1q_dup_u8(¶ms->rndnu_neon.output_min);
156 const uint8x16_t voutput_max = vld1q_dup_u8(¶ms->rndnu_neon.output_max);
157
158 vout0x0123456789ABCDEF = vmaxq_u8(vout0x0123456789ABCDEF, voutput_min);
159
160 vout0x0123456789ABCDEF = vminq_u8(vout0x0123456789ABCDEF, voutput_max);
161
162 if (nc >= 16) {
163 vst1q_u8(c0 + 0, vout0x0123456789ABCDEF);
164
165 c0 = (uint8_t*) ((uintptr_t) c0 + cn_stride);
166
167 a = (const uint8_t**restrict) ((uintptr_t) a - ks);
168
169 nc -= 16;
170 } else {
171 uint8x8_t vout0x01234567 = vget_low_u8(vout0x0123456789ABCDEF);
172 if (nc & 8) {
173 vst1_u8(c0, vout0x01234567); c0 += 8; // This line
174 vout0x01234567 = vget_high_u8(vout0x0123456789ABCDEF);
175 }
176 if (nc & 4) {
177 vst1_lane_u32((void*) c0, vreinterpret_u32_u8(vout0x01234567), 0); c0 += 4;
178 vout0x01234567 = vext_u8(vout0x01234567, vout0x01234567, 4);
179 }
180 if (nc & 2) {
181 vst1_lane_u16((void*) c0, vreinterpret_u16_u8(vout0x01234567), 0); c0 += 2;
182 vout0x01234567 = vext_u8(vout0x01234567, vout0x01234567, 2);
183 }
184 if (nc & 1) {
185 vst1_lane_u8(c0, vout0x01234567, 0);
186 }
187
188 nc = 0;
189 }
190 } while (nc != 0);
191 }
192