xref: /aosp_15_r20/external/XNNPACK/src/qs8-gemm/gen/3x16c2-minmax-rndnu-neon-mlal-ld2r.c (revision 4bdc94577ba0e567308109d787f7fec7b531ce36)
1 // Auto-generated file. Do not edit!
2 //   Template: src/qs8-gemm/c2-neon-mull-dup.c.in
3 //   Generator: tools/xngen
4 //
5 // Copyright 2021 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/gemm.h>
15 #include <xnnpack/math.h>
16 
xnn_qs8_gemm_minmax_rndnu_ukernel_3x16c2__neon_mlal_ld2r(size_t mr,size_t nc,size_t kc,const int8_t * restrict a,size_t a_stride,const void * restrict w,int8_t * restrict c,size_t cm_stride,size_t cn_stride,const union xnn_qs8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS (1)])17 void xnn_qs8_gemm_minmax_rndnu_ukernel_3x16c2__neon_mlal_ld2r(
18     size_t mr,
19     size_t nc,
20     size_t kc,
21     const int8_t* restrict a,
22     size_t a_stride,
23     const void* restrict w,
24     int8_t* restrict c,
25     size_t cm_stride,
26     size_t cn_stride,
27     const union xnn_qs8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
28 {
29   assert(mr != 0);
30   assert(mr <= 3);
31   assert(nc != 0);
32   assert(kc != 0);
33   assert(kc % sizeof(int8_t) == 0);
34   assert(a != NULL);
35   assert(w != NULL);
36   assert(c != NULL);
37 
38   kc = round_up_po2(kc, 2 * sizeof(int8_t));
39   const int8_t* a0 = a;
40   int8_t* c0 = c;
41   const int8_t* a1 = (const int8_t*) ((uintptr_t) a0 + a_stride);
42   int8_t* c1 = (int8_t*) ((uintptr_t) c0 + cm_stride);
43   if XNN_UNPREDICTABLE(mr < 2) {
44     a1 = a0;
45     c1 = c0;
46   }
47   const int8_t* a2 = (const int8_t*) ((uintptr_t) a1 + a_stride);
48   int8_t* c2 = (int8_t*) ((uintptr_t) c1 + cm_stride);
49   if XNN_UNPREDICTABLE(mr <= 2) {
50     a2 = a1;
51     c2 = c1;
52   }
53 
54   do {
55     int32x4_t vacc0x0123 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
56     int32x4_t vacc0x4567 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
57     int32x4_t vacc0x89AB = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
58     int32x4_t vacc0xCDEF = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
59     int32x4_t vacc1x0123 = vacc0x0123;
60     int32x4_t vacc1x4567 = vacc0x4567;
61     int32x4_t vacc1x89AB = vacc0x89AB;
62     int32x4_t vacc1xCDEF = vacc0xCDEF;
63     int32x4_t vacc2x0123 = vacc0x0123;
64     int32x4_t vacc2x4567 = vacc0x4567;
65     int32x4_t vacc2x89AB = vacc0x89AB;
66     int32x4_t vacc2xCDEF = vacc0xCDEF;
67 
68     size_t k = kc;
69 
70     while (k >= 16 * sizeof(int8_t)) {
71       const int16x4x2_t va00x0 = vld2_dup_s16((const void*)a0);
72       const int16x4x2_t va01x0 = vld2_dup_s16((const void*)(a0 + 4)); a0 += 8;
73       const int16x4x2_t va00x1 = vld2_dup_s16((const void*)a0);
74       const int16x4x2_t va01x1 = vld2_dup_s16((const void*)(a0 + 4)); a0 += 8;
75       const int16x4x2_t va10x0 = vld2_dup_s16((const void*)a1);
76       const int16x4x2_t va11x0 = vld2_dup_s16((const void*)(a1 + 4)); a1 += 8;
77       const int16x4x2_t va10x1 = vld2_dup_s16((const void*)a1);
78       const int16x4x2_t va11x1 = vld2_dup_s16((const void*)(a1 + 4)); a1 += 8;
79       const int16x4x2_t va20x0 = vld2_dup_s16((const void*)a2);
80       const int16x4x2_t va21x0 = vld2_dup_s16((const void*)(a2 + 4)); a2 += 8;
81       const int16x4x2_t va20x1 = vld2_dup_s16((const void*)a2);
82       const int16x4x2_t va21x1 = vld2_dup_s16((const void*)(a2 + 4)); a2 += 8;
83       const int8x8_t vb0123c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
84       const int8x8_t vb4567c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
85       const int8x8_t vb89ABc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
86       const int8x8_t vbCDEFc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
87       const int8x8_t vb0123c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
88       const int8x8_t vb4567c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
89       const int8x8_t vb89ABc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
90       const int8x8_t vbCDEFc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
91       const int8x8_t vb0123c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
92       const int8x8_t vb4567c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
93       const int8x8_t vb89ABc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
94       const int8x8_t vbCDEFc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
95       const int8x8_t vb0123c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
96       const int8x8_t vb4567c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
97       const int8x8_t vb89ABc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
98       const int8x8_t vbCDEFc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
99 
100       const int8x8_t va0c0x0 = vreinterpret_s8_s16(va00x0.val[0]);
101       const int8x8_t va0c0x1 = vreinterpret_s8_s16(va00x1.val[0]);
102       const int8x8_t va1c0x0 = vreinterpret_s8_s16(va10x0.val[0]);
103       const int8x8_t va1c0x1 = vreinterpret_s8_s16(va10x1.val[0]);
104       const int8x8_t va2c0x0 = vreinterpret_s8_s16(va20x0.val[0]);
105       const int8x8_t va2c0x1 = vreinterpret_s8_s16(va20x1.val[0]);
106 
107       int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0x0, va0c0x0);
108       int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0x0, va1c0x0);
109       int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0x0, va2c0x0);
110       const int8x8_t vb0123c0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
111       vprod0x0123c0 = vmlal_s8(vprod0x0123c0, vb0123c0x1, va0c0x1);
112       vprod1x0123c0 = vmlal_s8(vprod1x0123c0, vb0123c0x1, va1c0x1);
113       vprod2x0123c0 = vmlal_s8(vprod2x0123c0, vb0123c0x1, va2c0x1);
114       vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
115       vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
116       vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
117       int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0x0, va0c0x0);
118       int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0x0, va1c0x0);
119       int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0x0, va2c0x0);
120       const int8x8_t vb4567c0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
121       vprod0x4567c0 = vmlal_s8(vprod0x4567c0, vb4567c0x1, va0c0x1);
122       vprod1x4567c0 = vmlal_s8(vprod1x4567c0, vb4567c0x1, va1c0x1);
123       vprod2x4567c0 = vmlal_s8(vprod2x4567c0, vb4567c0x1, va2c0x1);
124       vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
125       vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
126       vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
127       int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0x0, va0c0x0);
128       int16x8_t vprod1x89ABc0 = vmull_s8(vb89ABc0x0, va1c0x0);
129       int16x8_t vprod2x89ABc0 = vmull_s8(vb89ABc0x0, va2c0x0);
130       const int8x8_t vb89ABc0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
131       vprod0x89ABc0 = vmlal_s8(vprod0x89ABc0, vb89ABc0x1, va0c0x1);
132       vprod1x89ABc0 = vmlal_s8(vprod1x89ABc0, vb89ABc0x1, va1c0x1);
133       vprod2x89ABc0 = vmlal_s8(vprod2x89ABc0, vb89ABc0x1, va2c0x1);
134       vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
135       vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc0);
136       vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc0);
137       int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0x0, va0c0x0);
138       int16x8_t vprod1xCDEFc0 = vmull_s8(vbCDEFc0x0, va1c0x0);
139       int16x8_t vprod2xCDEFc0 = vmull_s8(vbCDEFc0x0, va2c0x0);
140       const int8x8_t vbCDEFc0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
141       vprod0xCDEFc0 = vmlal_s8(vprod0xCDEFc0, vbCDEFc0x1, va0c0x1);
142       vprod1xCDEFc0 = vmlal_s8(vprod1xCDEFc0, vbCDEFc0x1, va1c0x1);
143       vprod2xCDEFc0 = vmlal_s8(vprod2xCDEFc0, vbCDEFc0x1, va2c0x1);
144       vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
145       vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc0);
146       vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc0);
147       const int8x8_t va0c1x0 = vreinterpret_s8_s16(va00x0.val[1]);
148       const int8x8_t va0c1x1 = vreinterpret_s8_s16(va00x1.val[1]);
149       const int8x8_t va1c1x0 = vreinterpret_s8_s16(va10x0.val[1]);
150       const int8x8_t va1c1x1 = vreinterpret_s8_s16(va10x1.val[1]);
151       const int8x8_t va2c1x0 = vreinterpret_s8_s16(va20x0.val[1]);
152       const int8x8_t va2c1x1 = vreinterpret_s8_s16(va20x1.val[1]);
153 
154       int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1x0, va0c1x0);
155       int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1x0, va1c1x0);
156       int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1x0, va2c1x0);
157       const int8x8_t vb0123c1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
158       vprod0x0123c1 = vmlal_s8(vprod0x0123c1, vb0123c1x1, va0c1x1);
159       vprod1x0123c1 = vmlal_s8(vprod1x0123c1, vb0123c1x1, va1c1x1);
160       vprod2x0123c1 = vmlal_s8(vprod2x0123c1, vb0123c1x1, va2c1x1);
161       vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
162       vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
163       vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
164       int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1x0, va0c1x0);
165       int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1x0, va1c1x0);
166       int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1x0, va2c1x0);
167       const int8x8_t vb4567c1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
168       vprod0x4567c1 = vmlal_s8(vprod0x4567c1, vb4567c1x1, va0c1x1);
169       vprod1x4567c1 = vmlal_s8(vprod1x4567c1, vb4567c1x1, va1c1x1);
170       vprod2x4567c1 = vmlal_s8(vprod2x4567c1, vb4567c1x1, va2c1x1);
171       vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
172       vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
173       vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
174       int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1x0, va0c1x0);
175       int16x8_t vprod1x89ABc1 = vmull_s8(vb89ABc1x0, va1c1x0);
176       int16x8_t vprod2x89ABc1 = vmull_s8(vb89ABc1x0, va2c1x0);
177       const int8x8_t vb89ABc1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
178       vprod0x89ABc1 = vmlal_s8(vprod0x89ABc1, vb89ABc1x1, va0c1x1);
179       vprod1x89ABc1 = vmlal_s8(vprod1x89ABc1, vb89ABc1x1, va1c1x1);
180       vprod2x89ABc1 = vmlal_s8(vprod2x89ABc1, vb89ABc1x1, va2c1x1);
181       vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
182       vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc1);
183       vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc1);
184       int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1x0, va0c1x0);
185       int16x8_t vprod1xCDEFc1 = vmull_s8(vbCDEFc1x0, va1c1x0);
186       int16x8_t vprod2xCDEFc1 = vmull_s8(vbCDEFc1x0, va2c1x0);
187       const int8x8_t vbCDEFc1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
188       vprod0xCDEFc1 = vmlal_s8(vprod0xCDEFc1, vbCDEFc1x1, va0c1x1);
189       vprod1xCDEFc1 = vmlal_s8(vprod1xCDEFc1, vbCDEFc1x1, va1c1x1);
190       vprod2xCDEFc1 = vmlal_s8(vprod2xCDEFc1, vbCDEFc1x1, va2c1x1);
191       vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
192       vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc1);
193       vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc1);
194       const int8x8_t va0c2x0 = vreinterpret_s8_s16(va01x0.val[0]);
195       const int8x8_t va0c2x1 = vreinterpret_s8_s16(va01x1.val[0]);
196       const int8x8_t va1c2x0 = vreinterpret_s8_s16(va11x0.val[0]);
197       const int8x8_t va1c2x1 = vreinterpret_s8_s16(va11x1.val[0]);
198       const int8x8_t va2c2x0 = vreinterpret_s8_s16(va21x0.val[0]);
199       const int8x8_t va2c2x1 = vreinterpret_s8_s16(va21x1.val[0]);
200 
201       int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2x0, va0c2x0);
202       int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2x0, va1c2x0);
203       int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2x0, va2c2x0);
204       const int8x8_t vb0123c2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
205       vprod0x0123c2 = vmlal_s8(vprod0x0123c2, vb0123c2x1, va0c2x1);
206       vprod1x0123c2 = vmlal_s8(vprod1x0123c2, vb0123c2x1, va1c2x1);
207       vprod2x0123c2 = vmlal_s8(vprod2x0123c2, vb0123c2x1, va2c2x1);
208       vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
209       vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
210       vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
211       int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2x0, va0c2x0);
212       int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2x0, va1c2x0);
213       int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2x0, va2c2x0);
214       const int8x8_t vb4567c2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
215       vprod0x4567c2 = vmlal_s8(vprod0x4567c2, vb4567c2x1, va0c2x1);
216       vprod1x4567c2 = vmlal_s8(vprod1x4567c2, vb4567c2x1, va1c2x1);
217       vprod2x4567c2 = vmlal_s8(vprod2x4567c2, vb4567c2x1, va2c2x1);
218       vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
219       vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
220       vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
221       int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2x0, va0c2x0);
222       int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2x0, va1c2x0);
223       int16x8_t vprod2x89ABc2 = vmull_s8(vb89ABc2x0, va2c2x0);
224       const int8x8_t vb89ABc2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
225       vprod0x89ABc2 = vmlal_s8(vprod0x89ABc2, vb89ABc2x1, va0c2x1);
226       vprod1x89ABc2 = vmlal_s8(vprod1x89ABc2, vb89ABc2x1, va1c2x1);
227       vprod2x89ABc2 = vmlal_s8(vprod2x89ABc2, vb89ABc2x1, va2c2x1);
228       vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
229       vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
230       vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc2);
231       int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2x0, va0c2x0);
232       int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2x0, va1c2x0);
233       int16x8_t vprod2xCDEFc2 = vmull_s8(vbCDEFc2x0, va2c2x0);
234       const int8x8_t vbCDEFc2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
235       vprod0xCDEFc2 = vmlal_s8(vprod0xCDEFc2, vbCDEFc2x1, va0c2x1);
236       vprod1xCDEFc2 = vmlal_s8(vprod1xCDEFc2, vbCDEFc2x1, va1c2x1);
237       vprod2xCDEFc2 = vmlal_s8(vprod2xCDEFc2, vbCDEFc2x1, va2c2x1);
238       vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
239       vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
240       vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc2);
241       const int8x8_t va0c3x0 = vreinterpret_s8_s16(va01x0.val[1]);
242       const int8x8_t va0c3x1 = vreinterpret_s8_s16(va01x1.val[1]);
243       const int8x8_t va1c3x0 = vreinterpret_s8_s16(va11x0.val[1]);
244       const int8x8_t va1c3x1 = vreinterpret_s8_s16(va11x1.val[1]);
245       const int8x8_t va2c3x0 = vreinterpret_s8_s16(va21x0.val[1]);
246       const int8x8_t va2c3x1 = vreinterpret_s8_s16(va21x1.val[1]);
247 
248       int16x8_t vprod0x0123c3 = vmull_s8(vb0123c3x0, va0c3x0);
249       int16x8_t vprod1x0123c3 = vmull_s8(vb0123c3x0, va1c3x0);
250       int16x8_t vprod2x0123c3 = vmull_s8(vb0123c3x0, va2c3x0);
251       const int8x8_t vb0123c3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
252       vprod0x0123c3 = vmlal_s8(vprod0x0123c3, vb0123c3x1, va0c3x1);
253       vprod1x0123c3 = vmlal_s8(vprod1x0123c3, vb0123c3x1, va1c3x1);
254       vprod2x0123c3 = vmlal_s8(vprod2x0123c3, vb0123c3x1, va2c3x1);
255       vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c3);
256       vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c3);
257       vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c3);
258       int16x8_t vprod0x4567c3 = vmull_s8(vb4567c3x0, va0c3x0);
259       int16x8_t vprod1x4567c3 = vmull_s8(vb4567c3x0, va1c3x0);
260       int16x8_t vprod2x4567c3 = vmull_s8(vb4567c3x0, va2c3x0);
261       const int8x8_t vb4567c3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
262       vprod0x4567c3 = vmlal_s8(vprod0x4567c3, vb4567c3x1, va0c3x1);
263       vprod1x4567c3 = vmlal_s8(vprod1x4567c3, vb4567c3x1, va1c3x1);
264       vprod2x4567c3 = vmlal_s8(vprod2x4567c3, vb4567c3x1, va2c3x1);
265       vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c3);
266       vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c3);
267       vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c3);
268       int16x8_t vprod0x89ABc3 = vmull_s8(vb89ABc3x0, va0c3x0);
269       int16x8_t vprod1x89ABc3 = vmull_s8(vb89ABc3x0, va1c3x0);
270       int16x8_t vprod2x89ABc3 = vmull_s8(vb89ABc3x0, va2c3x0);
271       const int8x8_t vb89ABc3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
272       vprod0x89ABc3 = vmlal_s8(vprod0x89ABc3, vb89ABc3x1, va0c3x1);
273       vprod1x89ABc3 = vmlal_s8(vprod1x89ABc3, vb89ABc3x1, va1c3x1);
274       vprod2x89ABc3 = vmlal_s8(vprod2x89ABc3, vb89ABc3x1, va2c3x1);
275       vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc3);
276       vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc3);
277       vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc3);
278       int16x8_t vprod0xCDEFc3 = vmull_s8(vbCDEFc3x0, va0c3x0);
279       int16x8_t vprod1xCDEFc3 = vmull_s8(vbCDEFc3x0, va1c3x0);
280       int16x8_t vprod2xCDEFc3 = vmull_s8(vbCDEFc3x0, va2c3x0);
281       const int8x8_t vbCDEFc3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
282       vprod0xCDEFc3 = vmlal_s8(vprod0xCDEFc3, vbCDEFc3x1, va0c3x1);
283       vprod1xCDEFc3 = vmlal_s8(vprod1xCDEFc3, vbCDEFc3x1, va1c3x1);
284       vprod2xCDEFc3 = vmlal_s8(vprod2xCDEFc3, vbCDEFc3x1, va2c3x1);
285       vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc3);
286       vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc3);
287       vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc3);
288 
289       k -= 16 * sizeof(int8_t);
290     }
291 
292     if (k >= 8 * sizeof(int8_t)) {
293       const int16x4x2_t va00 = vld2_dup_s16((const void*)a0);
294       const int16x4x2_t va01 = vld2_dup_s16((const void*)(a0 + 4)); a0 += 8;
295       const int16x4x2_t va10 = vld2_dup_s16((const void*)a1);
296       const int16x4x2_t va11 = vld2_dup_s16((const void*)(a1 + 4)); a1 += 8;
297       const int16x4x2_t va20 = vld2_dup_s16((const void*)a2);
298       const int16x4x2_t va21 = vld2_dup_s16((const void*)(a2 + 4)); a2 += 8;
299 
300       const int8x8_t vb0123c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
301       const int8x8_t vb4567c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
302       const int8x8_t vb89ABc0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
303       const int8x8_t vbCDEFc0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
304       const int8x8_t vb0123c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
305       const int8x8_t vb4567c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
306       const int8x8_t vb89ABc1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
307       const int8x8_t vbCDEFc1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
308       const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
309       const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
310       const int8x8_t vb89ABc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
311       const int8x8_t vbCDEFc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
312       const int8x8_t vb0123c3 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
313       const int8x8_t vb4567c3 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
314       const int8x8_t vb89ABc3 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
315       const int8x8_t vbCDEFc3 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
316 
317       const int8x8_t va0c0 = vreinterpret_s8_s16(va00.val[0]);
318       const int8x8_t va1c0 = vreinterpret_s8_s16(va10.val[0]);
319       const int8x8_t va2c0 = vreinterpret_s8_s16(va20.val[0]);
320 
321       const int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0, va0c0);
322       const int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0, va1c0);
323       const int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0, va2c0);
324       vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
325       vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
326       vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
327       const int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0, va0c0);
328       const int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0, va1c0);
329       const int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0, va2c0);
330       vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
331       vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
332       vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
333       const int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0, va0c0);
334       const int16x8_t vprod1x89ABc0 = vmull_s8(vb89ABc0, va1c0);
335       const int16x8_t vprod2x89ABc0 = vmull_s8(vb89ABc0, va2c0);
336       vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
337       vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc0);
338       vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc0);
339       const int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0, va0c0);
340       const int16x8_t vprod1xCDEFc0 = vmull_s8(vbCDEFc0, va1c0);
341       const int16x8_t vprod2xCDEFc0 = vmull_s8(vbCDEFc0, va2c0);
342       vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
343       vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc0);
344       vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc0);
345       const int8x8_t va0c1 = vreinterpret_s8_s16(va00.val[1]);
346       const int8x8_t va1c1 = vreinterpret_s8_s16(va10.val[1]);
347       const int8x8_t va2c1 = vreinterpret_s8_s16(va20.val[1]);
348 
349       const int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1, va0c1);
350       const int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1, va1c1);
351       const int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1, va2c1);
352       vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
353       vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
354       vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
355       const int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1, va0c1);
356       const int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1, va1c1);
357       const int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1, va2c1);
358       vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
359       vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
360       vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
361       const int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1, va0c1);
362       const int16x8_t vprod1x89ABc1 = vmull_s8(vb89ABc1, va1c1);
363       const int16x8_t vprod2x89ABc1 = vmull_s8(vb89ABc1, va2c1);
364       vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
365       vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc1);
366       vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc1);
367       const int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1, va0c1);
368       const int16x8_t vprod1xCDEFc1 = vmull_s8(vbCDEFc1, va1c1);
369       const int16x8_t vprod2xCDEFc1 = vmull_s8(vbCDEFc1, va2c1);
370       vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
371       vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc1);
372       vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc1);
373       const int8x8_t va0c2 = vreinterpret_s8_s16(va01.val[0]);
374       const int8x8_t va1c2 = vreinterpret_s8_s16(va11.val[0]);
375       const int8x8_t va2c2 = vreinterpret_s8_s16(va21.val[0]);
376 
377       const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, va0c2);
378       const int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2, va1c2);
379       const int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2, va2c2);
380       vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
381       vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
382       vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
383       const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, va0c2);
384       const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, va1c2);
385       const int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2, va2c2);
386       vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
387       vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
388       vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
389       const int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2, va0c2);
390       const int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2, va1c2);
391       const int16x8_t vprod2x89ABc2 = vmull_s8(vb89ABc2, va2c2);
392       vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
393       vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
394       vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc2);
395       const int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2, va0c2);
396       const int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2, va1c2);
397       const int16x8_t vprod2xCDEFc2 = vmull_s8(vbCDEFc2, va2c2);
398       vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
399       vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
400       vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc2);
401       const int8x8_t va0c3 = vreinterpret_s8_s16(va01.val[1]);
402       const int8x8_t va1c3 = vreinterpret_s8_s16(va11.val[1]);
403       const int8x8_t va2c3 = vreinterpret_s8_s16(va21.val[1]);
404 
405       const int16x8_t vprod0x0123c3 = vmull_s8(vb0123c3, va0c3);
406       const int16x8_t vprod1x0123c3 = vmull_s8(vb0123c3, va1c3);
407       const int16x8_t vprod2x0123c3 = vmull_s8(vb0123c3, va2c3);
408       vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c3);
409       vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c3);
410       vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c3);
411       const int16x8_t vprod0x4567c3 = vmull_s8(vb4567c3, va0c3);
412       const int16x8_t vprod1x4567c3 = vmull_s8(vb4567c3, va1c3);
413       const int16x8_t vprod2x4567c3 = vmull_s8(vb4567c3, va2c3);
414       vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c3);
415       vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c3);
416       vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c3);
417       const int16x8_t vprod0x89ABc3 = vmull_s8(vb89ABc3, va0c3);
418       const int16x8_t vprod1x89ABc3 = vmull_s8(vb89ABc3, va1c3);
419       const int16x8_t vprod2x89ABc3 = vmull_s8(vb89ABc3, va2c3);
420       vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc3);
421       vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc3);
422       vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc3);
423       const int16x8_t vprod0xCDEFc3 = vmull_s8(vbCDEFc3, va0c3);
424       const int16x8_t vprod1xCDEFc3 = vmull_s8(vbCDEFc3, va1c3);
425       const int16x8_t vprod2xCDEFc3 = vmull_s8(vbCDEFc3, va2c3);
426       vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc3);
427       vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc3);
428       vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc3);
429 
430       k -= 8 * sizeof(int8_t);
431     }
432 
433     if XNN_UNLIKELY(k != 0) {
434       const int8x8_t va0 = vld1_s8(a0); a0 = (const int8_t*) ((uintptr_t) a0 + k);
435       const int8x8_t va1 = vld1_s8(a1); a1 = (const int8_t*) ((uintptr_t) a1 + k);
436       const int8x8_t va2 = vld1_s8(a2); a2 = (const int8_t*) ((uintptr_t) a2 + k);
437 
438       const int8x8_t vb0123c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
439       const int8x8_t vb4567c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
440       const int8x8_t vb89ABc0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
441       const int8x8_t vbCDEFc0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
442 
443       const int8x8_t va0c0 = vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0));
444       const int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0, va0c0);
445       vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
446       const int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0, va0c0);
447       vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
448       const int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0, va0c0);
449       vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
450       const int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0, va0c0);
451       vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
452       const int8x8_t va1c0 = vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0));
453       const int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0, va1c0);
454       vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
455       const int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0, va1c0);
456       vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
457       const int16x8_t vprod1x89ABc0 = vmull_s8(vb89ABc0, va1c0);
458       vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc0);
459       const int16x8_t vprod1xCDEFc0 = vmull_s8(vbCDEFc0, va1c0);
460       vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc0);
461       const int8x8_t va2c0 = vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0));
462       const int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0, va2c0);
463       vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
464       const int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0, va2c0);
465       vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
466       const int16x8_t vprod2x89ABc0 = vmull_s8(vb89ABc0, va2c0);
467       vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc0);
468       const int16x8_t vprod2xCDEFc0 = vmull_s8(vbCDEFc0, va2c0);
469       vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc0);
470 
471       if (k > 2 * sizeof(int8_t)) {
472         const int8x8_t vb0123c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
473         const int8x8_t vb4567c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
474         const int8x8_t vb89ABc1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
475         const int8x8_t vbCDEFc1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
476 
477         const int8x8_t va0c1 = vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1));
478         const int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1, va0c1);
479         vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
480         const int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1, va0c1);
481         vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
482         const int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1, va0c1);
483         vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
484         const int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1, va0c1);
485         vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
486         const int8x8_t va1c1 = vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1));
487         const int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1, va1c1);
488         vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
489         const int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1, va1c1);
490         vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
491         const int16x8_t vprod1x89ABc1 = vmull_s8(vb89ABc1, va1c1);
492         vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc1);
493         const int16x8_t vprod1xCDEFc1 = vmull_s8(vbCDEFc1, va1c1);
494         vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc1);
495         const int8x8_t va2c1 = vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1));
496         const int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1, va2c1);
497         vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
498         const int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1, va2c1);
499         vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
500         const int16x8_t vprod2x89ABc1 = vmull_s8(vb89ABc1, va2c1);
501         vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc1);
502         const int16x8_t vprod2xCDEFc1 = vmull_s8(vbCDEFc1, va2c1);
503         vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc1);
504 
505         if (k > 4 * sizeof(int8_t)) {
506           const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
507           const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
508           const int8x8_t vb89ABc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
509           const int8x8_t vbCDEFc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
510 
511           const int8x8_t va0c2 = vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2));
512           const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, va0c2);
513           vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
514           const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, va0c2);
515           vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
516           const int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2, va0c2);
517           vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
518           const int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2, va0c2);
519           vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
520           const int8x8_t va1c2 = vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2));
521           const int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2, va1c2);
522           vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
523           const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, va1c2);
524           vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
525           const int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2, va1c2);
526           vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
527           const int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2, va1c2);
528           vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
529           const int8x8_t va2c2 = vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2));
530           const int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2, va2c2);
531           vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
532           const int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2, va2c2);
533           vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
534           const int16x8_t vprod2x89ABc2 = vmull_s8(vb89ABc2, va2c2);
535           vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc2);
536           const int16x8_t vprod2xCDEFc2 = vmull_s8(vbCDEFc2, va2c2);
537           vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc2);
538         }
539       }
540     }
541 
542     const int32x4_t vright_pre_shift = vld1q_dup_s32(&params->rndnu_neon.right_pre_shift);
543     const int32x4_t vmultiplier = vld1q_dup_s32(&params->rndnu_neon.multiplier);
544     const int32x4_t vright_post_shift = vld1q_dup_s32(&params->rndnu_neon.right_post_shift);
545 
546     vacc0x0123 = vqshlq_s32(vacc0x0123, vright_pre_shift);
547     vacc0x4567 = vqshlq_s32(vacc0x4567, vright_pre_shift);
548     vacc0x89AB = vqshlq_s32(vacc0x89AB, vright_pre_shift);
549     vacc0xCDEF = vqshlq_s32(vacc0xCDEF, vright_pre_shift);
550     vacc1x0123 = vqshlq_s32(vacc1x0123, vright_pre_shift);
551     vacc1x4567 = vqshlq_s32(vacc1x4567, vright_pre_shift);
552     vacc1x89AB = vqshlq_s32(vacc1x89AB, vright_pre_shift);
553     vacc1xCDEF = vqshlq_s32(vacc1xCDEF, vright_pre_shift);
554     vacc2x0123 = vqshlq_s32(vacc2x0123, vright_pre_shift);
555     vacc2x4567 = vqshlq_s32(vacc2x4567, vright_pre_shift);
556     vacc2x89AB = vqshlq_s32(vacc2x89AB, vright_pre_shift);
557     vacc2xCDEF = vqshlq_s32(vacc2xCDEF, vright_pre_shift);
558 
559     vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
560     vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
561     vacc0x89AB = vqdmulhq_s32(vacc0x89AB, vmultiplier);
562     vacc0xCDEF = vqdmulhq_s32(vacc0xCDEF, vmultiplier);
563     vacc1x0123 = vqdmulhq_s32(vacc1x0123, vmultiplier);
564     vacc1x4567 = vqdmulhq_s32(vacc1x4567, vmultiplier);
565     vacc1x89AB = vqdmulhq_s32(vacc1x89AB, vmultiplier);
566     vacc1xCDEF = vqdmulhq_s32(vacc1xCDEF, vmultiplier);
567     vacc2x0123 = vqdmulhq_s32(vacc2x0123, vmultiplier);
568     vacc2x4567 = vqdmulhq_s32(vacc2x4567, vmultiplier);
569     vacc2x89AB = vqdmulhq_s32(vacc2x89AB, vmultiplier);
570     vacc2xCDEF = vqdmulhq_s32(vacc2xCDEF, vmultiplier);
571 
572     vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
573     vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
574     vacc0x89AB = vrshlq_s32(vacc0x89AB, vright_post_shift);
575     vacc0xCDEF = vrshlq_s32(vacc0xCDEF, vright_post_shift);
576     vacc1x0123 = vrshlq_s32(vacc1x0123, vright_post_shift);
577     vacc1x4567 = vrshlq_s32(vacc1x4567, vright_post_shift);
578     vacc1x89AB = vrshlq_s32(vacc1x89AB, vright_post_shift);
579     vacc1xCDEF = vrshlq_s32(vacc1xCDEF, vright_post_shift);
580     vacc2x0123 = vrshlq_s32(vacc2x0123, vright_post_shift);
581     vacc2x4567 = vrshlq_s32(vacc2x4567, vright_post_shift);
582     vacc2x89AB = vrshlq_s32(vacc2x89AB, vright_post_shift);
583     vacc2xCDEF = vrshlq_s32(vacc2xCDEF, vright_post_shift);
584 
585     const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->rndnu_neon.output_zero_point);
586 #if XNN_ARCH_ARM64
587     int16x8_t vacc0x01234567 = vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567);
588     int16x8_t vacc0x89ABCDEF = vqmovn_high_s32(vqmovn_s32(vacc0x89AB), vacc0xCDEF);
589     int16x8_t vacc1x01234567 = vqmovn_high_s32(vqmovn_s32(vacc1x0123), vacc1x4567);
590     int16x8_t vacc1x89ABCDEF = vqmovn_high_s32(vqmovn_s32(vacc1x89AB), vacc1xCDEF);
591     int16x8_t vacc2x01234567 = vqmovn_high_s32(vqmovn_s32(vacc2x0123), vacc2x4567);
592     int16x8_t vacc2x89ABCDEF = vqmovn_high_s32(vqmovn_s32(vacc2x89AB), vacc2xCDEF);
593 
594     vacc0x01234567 = vqaddq_s16(vacc0x01234567, voutput_zero_point);
595     vacc0x89ABCDEF = vqaddq_s16(vacc0x89ABCDEF, voutput_zero_point);
596     vacc1x01234567 = vqaddq_s16(vacc1x01234567, voutput_zero_point);
597     vacc1x89ABCDEF = vqaddq_s16(vacc1x89ABCDEF, voutput_zero_point);
598     vacc2x01234567 = vqaddq_s16(vacc2x01234567, voutput_zero_point);
599     vacc2x89ABCDEF = vqaddq_s16(vacc2x89ABCDEF, voutput_zero_point);
600 
601     int8x16_t vout0x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc0x01234567), vacc0x89ABCDEF);
602     int8x16_t vout1x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc1x01234567), vacc1x89ABCDEF);
603     int8x16_t vout2x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc2x01234567), vacc2x89ABCDEF);
604 #else
605     int16x8_t vacc0x01234567 = vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567));
606     int16x8_t vacc0x89ABCDEF = vcombine_s16(vqmovn_s32(vacc0x89AB), vqmovn_s32(vacc0xCDEF));
607     int16x8_t vacc1x01234567 = vcombine_s16(vqmovn_s32(vacc1x0123), vqmovn_s32(vacc1x4567));
608     int16x8_t vacc1x89ABCDEF = vcombine_s16(vqmovn_s32(vacc1x89AB), vqmovn_s32(vacc1xCDEF));
609     int16x8_t vacc2x01234567 = vcombine_s16(vqmovn_s32(vacc2x0123), vqmovn_s32(vacc2x4567));
610     int16x8_t vacc2x89ABCDEF = vcombine_s16(vqmovn_s32(vacc2x89AB), vqmovn_s32(vacc2xCDEF));
611 
612     vacc0x01234567 = vqaddq_s16(vacc0x01234567, voutput_zero_point);
613     vacc0x89ABCDEF = vqaddq_s16(vacc0x89ABCDEF, voutput_zero_point);
614     vacc1x01234567 = vqaddq_s16(vacc1x01234567, voutput_zero_point);
615     vacc1x89ABCDEF = vqaddq_s16(vacc1x89ABCDEF, voutput_zero_point);
616     vacc2x01234567 = vqaddq_s16(vacc2x01234567, voutput_zero_point);
617     vacc2x89ABCDEF = vqaddq_s16(vacc2x89ABCDEF, voutput_zero_point);
618 
619     int8x16_t vout0x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc0x01234567), vqmovn_s16(vacc0x89ABCDEF));
620     int8x16_t vout1x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc1x01234567), vqmovn_s16(vacc1x89ABCDEF));
621     int8x16_t vout2x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc2x01234567), vqmovn_s16(vacc2x89ABCDEF));
622 #endif
623 
624     const int8x16_t voutput_min = vld1q_dup_s8(&params->rndnu_neon.output_min);
625     vout0x0123456789ABCDEF = vmaxq_s8(vout0x0123456789ABCDEF, voutput_min);
626     vout1x0123456789ABCDEF = vmaxq_s8(vout1x0123456789ABCDEF, voutput_min);
627     vout2x0123456789ABCDEF = vmaxq_s8(vout2x0123456789ABCDEF, voutput_min);
628 
629     const int8x16_t voutput_max = vld1q_dup_s8(&params->rndnu_neon.output_max);
630     vout0x0123456789ABCDEF = vminq_s8(vout0x0123456789ABCDEF, voutput_max);
631     vout1x0123456789ABCDEF = vminq_s8(vout1x0123456789ABCDEF, voutput_max);
632     vout2x0123456789ABCDEF = vminq_s8(vout2x0123456789ABCDEF, voutput_max);
633 
634     if (nc >= 16) {
635       vst1q_s8(c0 + 0, vout0x0123456789ABCDEF);
636       vst1q_s8(c1 + 0, vout1x0123456789ABCDEF);
637       vst1q_s8(c2 + 0, vout2x0123456789ABCDEF);
638 
639       c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
640       c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
641       c2 = (int8_t*) ((uintptr_t) c2 + cn_stride);
642 
643       a0 = (const int8_t*) ((uintptr_t) a0 - kc);
644       a1 = (const int8_t*) ((uintptr_t) a1 - kc);
645       a2 = (const int8_t*) ((uintptr_t) a2 - kc);
646 
647       nc -= 16;
648     } else {
649       // Final case where not all of the 16 columns fit in the destination.
650       int8x16_t vout0x01234567_1x01234567 = vcombine_s8(vget_low_s8(vout0x0123456789ABCDEF), vget_low_s8(vout1x0123456789ABCDEF));
651       int8x8_t vout2x01234567 = vget_low_s8(vout2x0123456789ABCDEF);
652       if (nc & 8) {
653         vst1_s8(c0, vget_low_s8(vout0x01234567_1x01234567)); c0 += 8;
654         vst1_s8(c1, vget_high_s8(vout0x01234567_1x01234567)); c1 += 8;
655         vst1_s8(c2, vout2x01234567); c2 += 8;
656         vout0x01234567_1x01234567 = vcombine_s8(vget_high_s8(vout0x0123456789ABCDEF), vget_high_s8(vout1x0123456789ABCDEF));
657         vout2x01234567 = vget_high_s8(vout2x0123456789ABCDEF);
658       }
659       if (nc & 4) {
660         vst1q_lane_u32((void*) c0, vreinterpretq_u32_s8(vout0x01234567_1x01234567), 0); c0 += 4;
661         vst1q_lane_u32((void*) c1, vreinterpretq_u32_s8(vout0x01234567_1x01234567), 2); c1 += 4;
662         vst1_lane_u32((void*) c2, vreinterpret_u32_s8(vout2x01234567), 0); c2 += 4;
663         vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 4);
664         vout2x01234567 = vext_s8(vout2x01234567, vout2x01234567, 4);
665       }
666       if (nc & 2) {
667         vst1q_lane_u16((void*) c0, vreinterpretq_u16_s8(vout0x01234567_1x01234567), 0); c0 += 2;
668         vst1q_lane_u16((void*) c1, vreinterpretq_u16_s8(vout0x01234567_1x01234567), 4); c1 += 2;
669         vst1_lane_u16((void*) c2, vreinterpret_u16_s8(vout2x01234567), 0); c2 += 2;
670         vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 2);
671         vout2x01234567 = vext_s8(vout2x01234567, vout2x01234567, 2);
672       }
673       if (nc & 1) {
674         vst1q_lane_s8(c0, vout0x01234567_1x01234567, 0);
675         vst1q_lane_s8(c1, vout0x01234567_1x01234567, 8);
676         vst1_lane_s8(c2, vout2x01234567, 0);
677       }
678 
679       nc = 0;
680     }
681   } while (nc != 0);
682 }
683