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_3x8c4__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_3x8c4__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 <= 3);
34 assert(nc != 0);
35 assert(kc != 0);
36 assert(ks != 0);
37 assert(ks % (3 * 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 uint8_t* c1 = (uint8_t*) ((uintptr_t) c0 + cm_stride);
46 if XNN_UNPREDICTABLE(mr < 2) {
47 c1 = c0;
48 }
49 uint8_t* c2 = (uint8_t*) ((uintptr_t) c1 + cm_stride);
50 if XNN_UNPREDICTABLE(mr <= 2) {
51 c2 = c1;
52 }
53
54 const uint8x8_t va_zero_point = vld1_dup_u8(¶ms->rndnu_neon.kernel_zero_point[0]);
55
56 do {
57 // Initialize accumulators with bias. 8 bias values are loaded from the
58 // weight matrix, at the start of the group of 8 columns.
59 uint32x4_t vpacc0x0123 = vld1q_u32(w); w = (const void*) ((const uint32_t*) w + 4);
60 uint32x4_t vpacc0x4567 = vld1q_u32(w); w = (const void*) ((const uint32_t*) w + 4);
61 uint32x4_t vpacc1x0123 = vpacc0x0123;
62 uint32x4_t vpacc1x4567 = vpacc0x4567;
63 uint32x4_t vpacc2x0123 = vpacc0x0123;
64 uint32x4_t vpacc2x4567 = vpacc0x4567;
65 uint32x2_t vnacc0 = vmov_n_u32(0);
66 uint32x2_t vnacc1 = vmov_n_u32(0);
67 uint32x2_t vnacc2 = vmov_n_u32(0);
68
69 size_t p = ks;
70 do {
71 const uint8_t* restrict a0 = a[0];
72 if XNN_UNPREDICTABLE(a0 != zero) {
73 a0 = (const uint8_t*) ((uintptr_t) a0 + a_offset);
74 }
75 const uint8_t* restrict a1 = a[1];
76 if XNN_UNPREDICTABLE(a1 != zero) {
77 a1 = (const uint8_t*) ((uintptr_t) a1 + a_offset);
78 }
79 const uint8_t* restrict a2 = a[2];
80 if XNN_UNPREDICTABLE(a2 != zero) {
81 a2 = (const uint8_t*) ((uintptr_t) a2 + a_offset);
82 }
83 a += 3;
84
85 // Inner accumulation loop along the 8 columns.
86 size_t k = kc;
87 // 2x partial unrolled loop to load 8 bytes at a time.
88 while (k >= 8 * sizeof(uint8_t)) {
89 // Load a 3x8 block of activations.
90 const uint8x8_t va0x01234567 = vld1_u8(a0); a0 += 8;
91 const uint8x8_t va1x01234567 = vld1_u8(a1); a1 += 8;
92 const uint8x8_t va2x01234567 = vld1_u8(a2); a2 += 8;
93
94 // Load a 8x8 block of weights.
95 const uint8x16_t vb0123x0123 = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
96 const uint8x16_t vb0123x4567 = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
97 const uint8x16_t vb4567x0123 = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
98 const uint8x16_t vb4567x4567 = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
99
100 // Multiply-accumulate: 3x8 * 8x8 --> 3x8.
101 vnacc0 = vdot_u32(vnacc0, va_zero_point, va0x01234567);
102 vpacc0x0123 = vdotq_lane_u32(vpacc0x0123, vb0123x0123, va0x01234567, 0);
103 vpacc0x4567 = vdotq_lane_u32(vpacc0x4567, vb0123x4567, va0x01234567, 0);
104 vpacc0x0123 = vdotq_lane_u32(vpacc0x0123, vb4567x0123, va0x01234567, 1);
105 vpacc0x4567 = vdotq_lane_u32(vpacc0x4567, vb4567x4567, va0x01234567, 1);
106 vnacc1 = vdot_u32(vnacc1, va_zero_point, va1x01234567);
107 vpacc1x0123 = vdotq_lane_u32(vpacc1x0123, vb0123x0123, va1x01234567, 0);
108 vpacc1x4567 = vdotq_lane_u32(vpacc1x4567, vb0123x4567, va1x01234567, 0);
109 vpacc1x0123 = vdotq_lane_u32(vpacc1x0123, vb4567x0123, va1x01234567, 1);
110 vpacc1x4567 = vdotq_lane_u32(vpacc1x4567, vb4567x4567, va1x01234567, 1);
111 vnacc2 = vdot_u32(vnacc2, va_zero_point, va2x01234567);
112 vpacc2x0123 = vdotq_lane_u32(vpacc2x0123, vb0123x0123, va2x01234567, 0);
113 vpacc2x4567 = vdotq_lane_u32(vpacc2x4567, vb0123x4567, va2x01234567, 0);
114 vpacc2x0123 = vdotq_lane_u32(vpacc2x0123, vb4567x0123, va2x01234567, 1);
115 vpacc2x4567 = vdotq_lane_u32(vpacc2x4567, vb4567x4567, va2x01234567, 1);
116
117 k -= 8 * sizeof(uint8_t);
118 }
119 // Handle up to 4 final positions of `k`
120 if XNN_UNLIKELY(k != 0) {
121 // Load a 3x4 block of activations.
122 const uint8x8_t va0x01234567 = vreinterpret_u8_u32(vld1_lane_u32((const void*) a0, vmov_n_u32(0), 0)); a0 += 4;
123 const uint8x8_t va1x01234567 = vreinterpret_u8_u32(vld1_lane_u32((const void*) a1, vmov_n_u32(0), 0)); a1 += 4;
124 const uint8x8_t va2x01234567 = vreinterpret_u8_u32(vld1_lane_u32((const void*) a2, vmov_n_u32(0), 0)); a2 += 4;
125
126 // Load a 4x8 block of weights.
127 const uint8x16_t vb0123x0123 = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
128 const uint8x16_t vb0123x4567 = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
129
130 // Multiply-accumulate: 3x4 * 4x8 --> 3x8.
131 vnacc0 = vdot_u32(vnacc0, va_zero_point, va0x01234567);
132 vpacc0x0123 = vdotq_lane_u32(vpacc0x0123, vb0123x0123, va0x01234567, 0);
133 vpacc0x4567 = vdotq_lane_u32(vpacc0x4567, vb0123x4567, va0x01234567, 0);
134 vnacc1 = vdot_u32(vnacc1, va_zero_point, va1x01234567);
135 vpacc1x0123 = vdotq_lane_u32(vpacc1x0123, vb0123x0123, va1x01234567, 0);
136 vpacc1x4567 = vdotq_lane_u32(vpacc1x4567, vb0123x4567, va1x01234567, 0);
137 vnacc2 = vdot_u32(vnacc2, va_zero_point, va2x01234567);
138 vpacc2x0123 = vdotq_lane_u32(vpacc2x0123, vb0123x0123, va2x01234567, 0);
139 vpacc2x4567 = vdotq_lane_u32(vpacc2x4567, vb0123x4567, va2x01234567, 0);
140 }
141 p -= 3 * sizeof(void*);
142 } while (p != 0);
143
144 // Subtract zero point from accumulators.
145 vnacc0 = vpadd_u32(vnacc0, vnacc0);
146 const uint32x4_t vnacc0x0123 = vcombine_u32(vnacc0, vnacc0);
147 int32x4_t vacc0x0123 = vreinterpretq_s32_u32(vsubq_u32(vpacc0x0123, vnacc0x0123));
148 int32x4_t vacc0x4567 = vreinterpretq_s32_u32(vsubq_u32(vpacc0x4567, vnacc0x0123));
149 vnacc1 = vpadd_u32(vnacc1, vnacc1);
150 const uint32x4_t vnacc1x0123 = vcombine_u32(vnacc1, vnacc1);
151 int32x4_t vacc1x0123 = vreinterpretq_s32_u32(vsubq_u32(vpacc1x0123, vnacc1x0123));
152 int32x4_t vacc1x4567 = vreinterpretq_s32_u32(vsubq_u32(vpacc1x4567, vnacc1x0123));
153 vnacc2 = vpadd_u32(vnacc2, vnacc2);
154 const uint32x4_t vnacc2x0123 = vcombine_u32(vnacc2, vnacc2);
155 int32x4_t vacc2x0123 = vreinterpretq_s32_u32(vsubq_u32(vpacc2x0123, vnacc2x0123));
156 int32x4_t vacc2x4567 = vreinterpretq_s32_u32(vsubq_u32(vpacc2x4567, vnacc2x0123));
157
158 const int32x4_t vright_pre_shift = vld1q_dup_s32(¶ms->rndnu_neon.right_pre_shift);
159 const int32x4_t vmultiplier = vld1q_dup_s32(¶ms->rndnu_neon.multiplier);
160 const int32x4_t vright_post_shift = vld1q_dup_s32(¶ms->rndnu_neon.right_post_shift);
161
162 vacc0x0123 = vshlq_s32(vacc0x0123, vright_pre_shift);
163 vacc0x4567 = vshlq_s32(vacc0x4567, vright_pre_shift);
164 vacc1x0123 = vshlq_s32(vacc1x0123, vright_pre_shift);
165 vacc1x4567 = vshlq_s32(vacc1x4567, vright_pre_shift);
166 vacc2x0123 = vshlq_s32(vacc2x0123, vright_pre_shift);
167 vacc2x4567 = vshlq_s32(vacc2x4567, vright_pre_shift);
168
169 vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
170 vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
171 vacc1x0123 = vqdmulhq_s32(vacc1x0123, vmultiplier);
172 vacc1x4567 = vqdmulhq_s32(vacc1x4567, vmultiplier);
173 vacc2x0123 = vqdmulhq_s32(vacc2x0123, vmultiplier);
174 vacc2x4567 = vqdmulhq_s32(vacc2x4567, vmultiplier);
175
176 vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
177 vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
178 vacc1x0123 = vrshlq_s32(vacc1x0123, vright_post_shift);
179 vacc1x4567 = vrshlq_s32(vacc1x4567, vright_post_shift);
180 vacc2x0123 = vrshlq_s32(vacc2x0123, vright_post_shift);
181 vacc2x4567 = vrshlq_s32(vacc2x4567, vright_post_shift);
182
183 const int16x8_t voutput_zero_point = vld1q_dup_s16(¶ms->rndnu_neon.output_zero_point);
184 #if XNN_ARCH_ARM64
185 const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
186 const int16x8_t vacc1x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc1x0123), vacc1x4567), voutput_zero_point);
187 const int16x8_t vacc2x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc2x0123), vacc2x4567), voutput_zero_point);
188
189 uint8x16_t vout0x01234567_1x01234567 = vqmovun_high_s16(vqmovun_s16(vacc0x01234567), vacc1x01234567);
190 uint8x8_t vout2x01234567 = vqmovun_s16(vacc2x01234567);
191 #else
192 const int16x8_t vacc0x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567)), voutput_zero_point);
193 const int16x8_t vacc1x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc1x0123), vqmovn_s32(vacc1x4567)), voutput_zero_point);
194 const int16x8_t vacc2x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc2x0123), vqmovn_s32(vacc2x4567)), voutput_zero_point);
195
196 uint8x16_t vout0x01234567_1x01234567 = vcombine_u8(vqmovun_s16(vacc0x01234567), vqmovun_s16(vacc1x01234567));
197 uint8x8_t vout2x01234567 = vqmovun_s16(vacc2x01234567);
198 #endif
199 const uint8x16_t voutput_min = vld1q_dup_u8(¶ms->rndnu_neon.output_min);
200 const uint8x16_t voutput_max = vld1q_dup_u8(¶ms->rndnu_neon.output_max);
201
202 vout0x01234567_1x01234567 = vmaxq_u8(vout0x01234567_1x01234567, voutput_min);
203 vout2x01234567 = vmax_u8(vout2x01234567, vget_low_u8(voutput_min));
204
205 vout0x01234567_1x01234567 = vminq_u8(vout0x01234567_1x01234567, voutput_max);
206 vout2x01234567 = vmin_u8(vout2x01234567, vget_low_u8(voutput_max));
207
208 if (nc >= 8) {
209 vst1_u8(c2 + 0, vout2x01234567);
210 vst1_u8(c1 + 0, vget_high_u8(vout0x01234567_1x01234567));
211 vst1_u8(c0 + 0, vget_low_u8(vout0x01234567_1x01234567));
212
213 c2 = (uint8_t*) ((uintptr_t) c2 + cn_stride);
214 c1 = (uint8_t*) ((uintptr_t) c1 + cn_stride);
215 c0 = (uint8_t*) ((uintptr_t) c0 + cn_stride);
216
217 a = (const uint8_t**restrict) ((uintptr_t) a - ks);
218
219 nc -= 8;
220 } else {
221 if (nc & 4) {
222 vst1_lane_u32((void*) c2, vreinterpret_u32_u8(vout2x01234567), 0); c2 += 4;
223 vst1q_lane_u32((void*) c1, vreinterpretq_u32_u8(vout0x01234567_1x01234567), 2); c1 += 4;
224 vst1q_lane_u32((void*) c0, vreinterpretq_u32_u8(vout0x01234567_1x01234567), 0); c0 += 4;
225 vout2x01234567 = vext_u8(vout2x01234567, vout2x01234567, 4);
226 vout0x01234567_1x01234567 = vextq_u8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 4);
227 }
228 if (nc & 2) {
229 vst1_lane_u16((void*) c2, vreinterpret_u16_u8(vout2x01234567), 0); c2 += 2;
230 vst1q_lane_u16((void*) c1, vreinterpretq_u16_u8(vout0x01234567_1x01234567), 4); c1 += 2;
231 vst1q_lane_u16((void*) c0, vreinterpretq_u16_u8(vout0x01234567_1x01234567), 0); c0 += 2;
232 vout2x01234567 = vext_u8(vout2x01234567, vout2x01234567, 2);
233 vout0x01234567_1x01234567 = vextq_u8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 2);
234 }
235 if (nc & 1) {
236 vst1_lane_u8(c2, vout2x01234567, 0);
237 vst1q_lane_u8(c1, vout0x01234567_1x01234567, 8);
238 vst1q_lane_u8(c0, vout0x01234567_1x01234567, 0);
239 }
240
241 nc = 0;
242 }
243 } while (nc != 0);
244 }
245