xref: /aosp_15_r20/external/XNNPACK/src/qs8-gemm/gen/3x16c4s2-minmax-rndnu-neon-mlal.c (revision 4bdc94577ba0e567308109d787f7fec7b531ce36)
1 // Auto-generated file. Do not edit!
2 //   Template: src/qs8-gemm/c4-neon-mull-shuffle.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 
17 
xnn_qs8_gemm_minmax_rndnu_ukernel_3x16c4s2__neon_mlal(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)])18 void xnn_qs8_gemm_minmax_rndnu_ukernel_3x16c4s2__neon_mlal(
19     size_t mr,
20     size_t nc,
21     size_t kc,
22     const int8_t* restrict a,
23     size_t a_stride,
24     const void* restrict w,
25     int8_t* restrict c,
26     size_t cm_stride,
27     size_t cn_stride,
28     const union xnn_qs8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
29 {
30   assert(mr != 0);
31   assert(mr <= 3);
32   assert(nc != 0);
33   assert(kc != 0);
34   assert(kc % sizeof(int8_t) == 0);
35   assert(a != NULL);
36   assert(w != NULL);
37   assert(c != NULL);
38 
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   kc = round_up_po2(kc, 8 * sizeof(int8_t));
55   do {
56     int32x4_t vacc0x01 = vreinterpretq_s32_u64(vmovl_u32(vld1_u32(w))); w = (const int32_t*) w + 2;
57     int32x4_t vacc0x23 = vreinterpretq_s32_u64(vmovl_u32(vld1_u32(w))); w = (const int32_t*) w + 2;
58     int32x4_t vacc0x45 = vreinterpretq_s32_u64(vmovl_u32(vld1_u32(w))); w = (const int32_t*) w + 2;
59     int32x4_t vacc0x67 = vreinterpretq_s32_u64(vmovl_u32(vld1_u32(w))); w = (const int32_t*) w + 2;
60     int32x4_t vacc0x89 = vreinterpretq_s32_u64(vmovl_u32(vld1_u32(w))); w = (const int32_t*) w + 2;
61     int32x4_t vacc0xAB = vreinterpretq_s32_u64(vmovl_u32(vld1_u32(w))); w = (const int32_t*) w + 2;
62     int32x4_t vacc0xCD = vreinterpretq_s32_u64(vmovl_u32(vld1_u32(w))); w = (const int32_t*) w + 2;
63     int32x4_t vacc0xEF = vreinterpretq_s32_u64(vmovl_u32(vld1_u32(w))); w = (const int32_t*) w + 2;
64     int32x4_t vacc1x01 = vacc0x01;
65     int32x4_t vacc1x23 = vacc0x23;
66     int32x4_t vacc1x45 = vacc0x45;
67     int32x4_t vacc1x67 = vacc0x67;
68     int32x4_t vacc1x89 = vacc0x89;
69     int32x4_t vacc1xAB = vacc0xAB;
70     int32x4_t vacc1xCD = vacc0xCD;
71     int32x4_t vacc1xEF = vacc0xEF;
72     int32x4_t vacc2x01 = vacc0x01;
73     int32x4_t vacc2x23 = vacc0x23;
74     int32x4_t vacc2x45 = vacc0x45;
75     int32x4_t vacc2x67 = vacc0x67;
76     int32x4_t vacc2x89 = vacc0x89;
77     int32x4_t vacc2xAB = vacc0xAB;
78     int32x4_t vacc2xCD = vacc0xCD;
79     int32x4_t vacc2xEF = vacc0xEF;
80 
81     size_t k = kc;
82     while (k >= 16 * sizeof(int8_t)) {
83       int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
84       int8x8_t va0x1 = vld1_s8(a0); a0 += 8;
85       int8x8_t va1x0 = vld1_s8(a1); a1 += 8;
86       int8x8_t va1x1 = vld1_s8(a1); a1 += 8;
87       int8x8_t va2x0 = vld1_s8(a2); a2 += 8;
88       int8x8_t va2x1 = vld1_s8(a2); a2 += 8;
89 
90       const int8x8_t vb01c0x0 = vld1_s8(w); w = (const int8_t*) w + 8;
91       const int8x8_t vb23c0x0 = vld1_s8(w); w = (const int8_t*) w + 8;
92       const int8x8_t vb45c0x0 = vld1_s8(w); w = (const int8_t*) w + 8;
93       const int8x8_t vb67c0x0 = vld1_s8(w); w = (const int8_t*) w + 8;
94       const int8x8_t vb89c0x0 = vld1_s8(w); w = (const int8_t*) w + 8;
95       const int8x8_t vbABc0x0 = vld1_s8(w); w = (const int8_t*) w + 8;
96       const int8x8_t vbCDc0x0 = vld1_s8(w); w = (const int8_t*) w + 8;
97       const int8x8_t vbEFc0x0 = vld1_s8(w); w = (const int8_t*) w + 8;
98       const int8x8_t vb01c1x0 = vld1_s8(w); w = (const int8_t*) w + 8;
99       const int8x8_t vb23c1x0 = vld1_s8(w); w = (const int8_t*) w + 8;
100       const int8x8_t vb45c1x0 = vld1_s8(w); w = (const int8_t*) w + 8;
101       const int8x8_t vb67c1x0 = vld1_s8(w); w = (const int8_t*) w + 8;
102       const int8x8_t vb89c1x0 = vld1_s8(w); w = (const int8_t*) w + 8;
103       const int8x8_t vbABc1x0 = vld1_s8(w); w = (const int8_t*) w + 8;
104       const int8x8_t vbCDc1x0 = vld1_s8(w); w = (const int8_t*) w + 8;
105       const int8x8_t vbEFc1x0 = vld1_s8(w); w = (const int8_t*) w + 8;
106 
107       int16x8_t vprod0x01c0 = vmull_s8(vb01c0x0, va0x0);
108       int16x8_t vprod1x01c0 = vmull_s8(vb01c0x0, va1x0);
109       int16x8_t vprod2x01c0 = vmull_s8(vb01c0x0, va2x0);
110       const int8x8_t vb01c0x1 = vld1_s8(w); w = (const int8_t*) w + 8;
111       vprod0x01c0 = vmlal_s8(vprod0x01c0, vb01c0x1, va0x1);
112       vprod1x01c0 = vmlal_s8(vprod1x01c0, vb01c0x1, va1x1);
113       vprod2x01c0 = vmlal_s8(vprod2x01c0, vb01c0x1, va2x1);
114       vacc0x01 = vpadalq_s16(vacc0x01, vprod0x01c0);
115       vacc1x01 = vpadalq_s16(vacc1x01, vprod1x01c0);
116       vacc2x01 = vpadalq_s16(vacc2x01, vprod2x01c0);
117       int16x8_t vprod0x23c0 = vmull_s8(vb23c0x0, va0x0);
118       int16x8_t vprod1x23c0 = vmull_s8(vb23c0x0, va1x0);
119       int16x8_t vprod2x23c0 = vmull_s8(vb23c0x0, va2x0);
120       const int8x8_t vb23c0x1 = vld1_s8(w); w = (const int8_t*) w + 8;
121       vprod0x23c0 = vmlal_s8(vprod0x23c0, vb23c0x1, va0x1);
122       vprod1x23c0 = vmlal_s8(vprod1x23c0, vb23c0x1, va1x1);
123       vprod2x23c0 = vmlal_s8(vprod2x23c0, vb23c0x1, va2x1);
124       vacc0x23 = vpadalq_s16(vacc0x23, vprod0x23c0);
125       vacc1x23 = vpadalq_s16(vacc1x23, vprod1x23c0);
126       vacc2x23 = vpadalq_s16(vacc2x23, vprod2x23c0);
127       int16x8_t vprod0x45c0 = vmull_s8(vb45c0x0, va0x0);
128       int16x8_t vprod1x45c0 = vmull_s8(vb45c0x0, va1x0);
129       int16x8_t vprod2x45c0 = vmull_s8(vb45c0x0, va2x0);
130       const int8x8_t vb45c0x1 = vld1_s8(w); w = (const int8_t*) w + 8;
131       vprod0x45c0 = vmlal_s8(vprod0x45c0, vb45c0x1, va0x1);
132       vprod1x45c0 = vmlal_s8(vprod1x45c0, vb45c0x1, va1x1);
133       vprod2x45c0 = vmlal_s8(vprod2x45c0, vb45c0x1, va2x1);
134       vacc0x45 = vpadalq_s16(vacc0x45, vprod0x45c0);
135       vacc1x45 = vpadalq_s16(vacc1x45, vprod1x45c0);
136       vacc2x45 = vpadalq_s16(vacc2x45, vprod2x45c0);
137       int16x8_t vprod0x67c0 = vmull_s8(vb67c0x0, va0x0);
138       int16x8_t vprod1x67c0 = vmull_s8(vb67c0x0, va1x0);
139       int16x8_t vprod2x67c0 = vmull_s8(vb67c0x0, va2x0);
140       const int8x8_t vb67c0x1 = vld1_s8(w); w = (const int8_t*) w + 8;
141       vprod0x67c0 = vmlal_s8(vprod0x67c0, vb67c0x1, va0x1);
142       vprod1x67c0 = vmlal_s8(vprod1x67c0, vb67c0x1, va1x1);
143       vprod2x67c0 = vmlal_s8(vprod2x67c0, vb67c0x1, va2x1);
144       vacc0x67 = vpadalq_s16(vacc0x67, vprod0x67c0);
145       vacc1x67 = vpadalq_s16(vacc1x67, vprod1x67c0);
146       vacc2x67 = vpadalq_s16(vacc2x67, vprod2x67c0);
147       int16x8_t vprod0x89c0 = vmull_s8(vb89c0x0, va0x0);
148       int16x8_t vprod1x89c0 = vmull_s8(vb89c0x0, va1x0);
149       int16x8_t vprod2x89c0 = vmull_s8(vb89c0x0, va2x0);
150       const int8x8_t vb89c0x1 = vld1_s8(w); w = (const int8_t*) w + 8;
151       vprod0x89c0 = vmlal_s8(vprod0x89c0, vb89c0x1, va0x1);
152       vprod1x89c0 = vmlal_s8(vprod1x89c0, vb89c0x1, va1x1);
153       vprod2x89c0 = vmlal_s8(vprod2x89c0, vb89c0x1, va2x1);
154       vacc0x89 = vpadalq_s16(vacc0x89, vprod0x89c0);
155       vacc1x89 = vpadalq_s16(vacc1x89, vprod1x89c0);
156       vacc2x89 = vpadalq_s16(vacc2x89, vprod2x89c0);
157       int16x8_t vprod0xABc0 = vmull_s8(vbABc0x0, va0x0);
158       int16x8_t vprod1xABc0 = vmull_s8(vbABc0x0, va1x0);
159       int16x8_t vprod2xABc0 = vmull_s8(vbABc0x0, va2x0);
160       const int8x8_t vbABc0x1 = vld1_s8(w); w = (const int8_t*) w + 8;
161       vprod0xABc0 = vmlal_s8(vprod0xABc0, vbABc0x1, va0x1);
162       vprod1xABc0 = vmlal_s8(vprod1xABc0, vbABc0x1, va1x1);
163       vprod2xABc0 = vmlal_s8(vprod2xABc0, vbABc0x1, va2x1);
164       vacc0xAB = vpadalq_s16(vacc0xAB, vprod0xABc0);
165       vacc1xAB = vpadalq_s16(vacc1xAB, vprod1xABc0);
166       vacc2xAB = vpadalq_s16(vacc2xAB, vprod2xABc0);
167       int16x8_t vprod0xCDc0 = vmull_s8(vbCDc0x0, va0x0);
168       int16x8_t vprod1xCDc0 = vmull_s8(vbCDc0x0, va1x0);
169       int16x8_t vprod2xCDc0 = vmull_s8(vbCDc0x0, va2x0);
170       const int8x8_t vbCDc0x1 = vld1_s8(w); w = (const int8_t*) w + 8;
171       vprod0xCDc0 = vmlal_s8(vprod0xCDc0, vbCDc0x1, va0x1);
172       vprod1xCDc0 = vmlal_s8(vprod1xCDc0, vbCDc0x1, va1x1);
173       vprod2xCDc0 = vmlal_s8(vprod2xCDc0, vbCDc0x1, va2x1);
174       vacc0xCD = vpadalq_s16(vacc0xCD, vprod0xCDc0);
175       vacc1xCD = vpadalq_s16(vacc1xCD, vprod1xCDc0);
176       vacc2xCD = vpadalq_s16(vacc2xCD, vprod2xCDc0);
177       int16x8_t vprod0xEFc0 = vmull_s8(vbEFc0x0, va0x0);
178       int16x8_t vprod1xEFc0 = vmull_s8(vbEFc0x0, va1x0);
179       int16x8_t vprod2xEFc0 = vmull_s8(vbEFc0x0, va2x0);
180       const int8x8_t vbEFc0x1 = vld1_s8(w); w = (const int8_t*) w + 8;
181       vprod0xEFc0 = vmlal_s8(vprod0xEFc0, vbEFc0x1, va0x1);
182       vprod1xEFc0 = vmlal_s8(vprod1xEFc0, vbEFc0x1, va1x1);
183       vprod2xEFc0 = vmlal_s8(vprod2xEFc0, vbEFc0x1, va2x1);
184       vacc0xEF = vpadalq_s16(vacc0xEF, vprod0xEFc0);
185       vacc1xEF = vpadalq_s16(vacc1xEF, vprod1xEFc0);
186       vacc2xEF = vpadalq_s16(vacc2xEF, vprod2xEFc0);
187       va0x0 = vext_s8(va0x0, va0x0, 4);
188       va0x1 = vext_s8(va0x1, va0x1, 4);
189       va1x0 = vext_s8(va1x0, va1x0, 4);
190       va1x1 = vext_s8(va1x1, va1x1, 4);
191       va2x0 = vext_s8(va2x0, va2x0, 4);
192       va2x1 = vext_s8(va2x1, va2x1, 4);
193       int16x8_t vprod0x01c1 = vmull_s8(vb01c1x0, va0x0);
194       int16x8_t vprod1x01c1 = vmull_s8(vb01c1x0, va1x0);
195       int16x8_t vprod2x01c1 = vmull_s8(vb01c1x0, va2x0);
196       const int8x8_t vb01c1x1 = vld1_s8(w); w = (const int8_t*) w + 8;
197       vprod0x01c1 = vmlal_s8(vprod0x01c1, vb01c1x1, va0x1);
198       vprod1x01c1 = vmlal_s8(vprod1x01c1, vb01c1x1, va1x1);
199       vprod2x01c1 = vmlal_s8(vprod2x01c1, vb01c1x1, va2x1);
200       vacc0x01 = vpadalq_s16(vacc0x01, vprod0x01c1);
201       vacc1x01 = vpadalq_s16(vacc1x01, vprod1x01c1);
202       vacc2x01 = vpadalq_s16(vacc2x01, vprod2x01c1);
203       int16x8_t vprod0x23c1 = vmull_s8(vb23c1x0, va0x0);
204       int16x8_t vprod1x23c1 = vmull_s8(vb23c1x0, va1x0);
205       int16x8_t vprod2x23c1 = vmull_s8(vb23c1x0, va2x0);
206       const int8x8_t vb23c1x1 = vld1_s8(w); w = (const int8_t*) w + 8;
207       vprod0x23c1 = vmlal_s8(vprod0x23c1, vb23c1x1, va0x1);
208       vprod1x23c1 = vmlal_s8(vprod1x23c1, vb23c1x1, va1x1);
209       vprod2x23c1 = vmlal_s8(vprod2x23c1, vb23c1x1, va2x1);
210       vacc0x23 = vpadalq_s16(vacc0x23, vprod0x23c1);
211       vacc1x23 = vpadalq_s16(vacc1x23, vprod1x23c1);
212       vacc2x23 = vpadalq_s16(vacc2x23, vprod2x23c1);
213       int16x8_t vprod0x45c1 = vmull_s8(vb45c1x0, va0x0);
214       int16x8_t vprod1x45c1 = vmull_s8(vb45c1x0, va1x0);
215       int16x8_t vprod2x45c1 = vmull_s8(vb45c1x0, va2x0);
216       const int8x8_t vb45c1x1 = vld1_s8(w); w = (const int8_t*) w + 8;
217       vprod0x45c1 = vmlal_s8(vprod0x45c1, vb45c1x1, va0x1);
218       vprod1x45c1 = vmlal_s8(vprod1x45c1, vb45c1x1, va1x1);
219       vprod2x45c1 = vmlal_s8(vprod2x45c1, vb45c1x1, va2x1);
220       vacc0x45 = vpadalq_s16(vacc0x45, vprod0x45c1);
221       vacc1x45 = vpadalq_s16(vacc1x45, vprod1x45c1);
222       vacc2x45 = vpadalq_s16(vacc2x45, vprod2x45c1);
223       int16x8_t vprod0x67c1 = vmull_s8(vb67c1x0, va0x0);
224       int16x8_t vprod1x67c1 = vmull_s8(vb67c1x0, va1x0);
225       int16x8_t vprod2x67c1 = vmull_s8(vb67c1x0, va2x0);
226       const int8x8_t vb67c1x1 = vld1_s8(w); w = (const int8_t*) w + 8;
227       vprod0x67c1 = vmlal_s8(vprod0x67c1, vb67c1x1, va0x1);
228       vprod1x67c1 = vmlal_s8(vprod1x67c1, vb67c1x1, va1x1);
229       vprod2x67c1 = vmlal_s8(vprod2x67c1, vb67c1x1, va2x1);
230       vacc0x67 = vpadalq_s16(vacc0x67, vprod0x67c1);
231       vacc1x67 = vpadalq_s16(vacc1x67, vprod1x67c1);
232       vacc2x67 = vpadalq_s16(vacc2x67, vprod2x67c1);
233       int16x8_t vprod0x89c1 = vmull_s8(vb89c1x0, va0x0);
234       int16x8_t vprod1x89c1 = vmull_s8(vb89c1x0, va1x0);
235       int16x8_t vprod2x89c1 = vmull_s8(vb89c1x0, va2x0);
236       const int8x8_t vb89c1x1 = vld1_s8(w); w = (const int8_t*) w + 8;
237       vprod0x89c1 = vmlal_s8(vprod0x89c1, vb89c1x1, va0x1);
238       vprod1x89c1 = vmlal_s8(vprod1x89c1, vb89c1x1, va1x1);
239       vprod2x89c1 = vmlal_s8(vprod2x89c1, vb89c1x1, va2x1);
240       vacc0x89 = vpadalq_s16(vacc0x89, vprod0x89c1);
241       vacc1x89 = vpadalq_s16(vacc1x89, vprod1x89c1);
242       vacc2x89 = vpadalq_s16(vacc2x89, vprod2x89c1);
243       int16x8_t vprod0xABc1 = vmull_s8(vbABc1x0, va0x0);
244       int16x8_t vprod1xABc1 = vmull_s8(vbABc1x0, va1x0);
245       int16x8_t vprod2xABc1 = vmull_s8(vbABc1x0, va2x0);
246       const int8x8_t vbABc1x1 = vld1_s8(w); w = (const int8_t*) w + 8;
247       vprod0xABc1 = vmlal_s8(vprod0xABc1, vbABc1x1, va0x1);
248       vprod1xABc1 = vmlal_s8(vprod1xABc1, vbABc1x1, va1x1);
249       vprod2xABc1 = vmlal_s8(vprod2xABc1, vbABc1x1, va2x1);
250       vacc0xAB = vpadalq_s16(vacc0xAB, vprod0xABc1);
251       vacc1xAB = vpadalq_s16(vacc1xAB, vprod1xABc1);
252       vacc2xAB = vpadalq_s16(vacc2xAB, vprod2xABc1);
253       int16x8_t vprod0xCDc1 = vmull_s8(vbCDc1x0, va0x0);
254       int16x8_t vprod1xCDc1 = vmull_s8(vbCDc1x0, va1x0);
255       int16x8_t vprod2xCDc1 = vmull_s8(vbCDc1x0, va2x0);
256       const int8x8_t vbCDc1x1 = vld1_s8(w); w = (const int8_t*) w + 8;
257       vprod0xCDc1 = vmlal_s8(vprod0xCDc1, vbCDc1x1, va0x1);
258       vprod1xCDc1 = vmlal_s8(vprod1xCDc1, vbCDc1x1, va1x1);
259       vprod2xCDc1 = vmlal_s8(vprod2xCDc1, vbCDc1x1, va2x1);
260       vacc0xCD = vpadalq_s16(vacc0xCD, vprod0xCDc1);
261       vacc1xCD = vpadalq_s16(vacc1xCD, vprod1xCDc1);
262       vacc2xCD = vpadalq_s16(vacc2xCD, vprod2xCDc1);
263       int16x8_t vprod0xEFc1 = vmull_s8(vbEFc1x0, va0x0);
264       int16x8_t vprod1xEFc1 = vmull_s8(vbEFc1x0, va1x0);
265       int16x8_t vprod2xEFc1 = vmull_s8(vbEFc1x0, va2x0);
266       const int8x8_t vbEFc1x1 = vld1_s8(w); w = (const int8_t*) w + 8;
267       vprod0xEFc1 = vmlal_s8(vprod0xEFc1, vbEFc1x1, va0x1);
268       vprod1xEFc1 = vmlal_s8(vprod1xEFc1, vbEFc1x1, va1x1);
269       vprod2xEFc1 = vmlal_s8(vprod2xEFc1, vbEFc1x1, va2x1);
270       vacc0xEF = vpadalq_s16(vacc0xEF, vprod0xEFc1);
271       vacc1xEF = vpadalq_s16(vacc1xEF, vprod1xEFc1);
272       vacc2xEF = vpadalq_s16(vacc2xEF, vprod2xEFc1);
273 
274       k -= 16 * sizeof(int8_t);
275     }
276     if (k != 0) {
277       int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
278       int8x8_t va1x0 = vld1_s8(a1); a1 += 8;
279       int8x8_t va2x0 = vld1_s8(a2); a2 += 8;
280 
281       const int8x8_t vb01c0x0 = vld1_s8(w); w = (const int8_t*) w + 8;
282       const int8x8_t vb23c0x0 = vld1_s8(w); w = (const int8_t*) w + 8;
283       const int8x8_t vb45c0x0 = vld1_s8(w); w = (const int8_t*) w + 8;
284       const int8x8_t vb67c0x0 = vld1_s8(w); w = (const int8_t*) w + 8;
285       const int8x8_t vb89c0x0 = vld1_s8(w); w = (const int8_t*) w + 8;
286       const int8x8_t vbABc0x0 = vld1_s8(w); w = (const int8_t*) w + 8;
287       const int8x8_t vbCDc0x0 = vld1_s8(w); w = (const int8_t*) w + 8;
288       const int8x8_t vbEFc0x0 = vld1_s8(w); w = (const int8_t*) w + 8;
289       const int8x8_t vb01c1x0 = vld1_s8(w); w = (const int8_t*) w + 8;
290       const int8x8_t vb23c1x0 = vld1_s8(w); w = (const int8_t*) w + 8;
291       const int8x8_t vb45c1x0 = vld1_s8(w); w = (const int8_t*) w + 8;
292       const int8x8_t vb67c1x0 = vld1_s8(w); w = (const int8_t*) w + 8;
293       const int8x8_t vb89c1x0 = vld1_s8(w); w = (const int8_t*) w + 8;
294       const int8x8_t vbABc1x0 = vld1_s8(w); w = (const int8_t*) w + 8;
295       const int8x8_t vbCDc1x0 = vld1_s8(w); w = (const int8_t*) w + 8;
296       const int8x8_t vbEFc1x0 = vld1_s8(w); w = (const int8_t*) w + 8;
297 
298       int16x8_t vprod0x01c0 = vmull_s8(vb01c0x0, va0x0);
299       int16x8_t vprod1x01c0 = vmull_s8(vb01c0x0, va1x0);
300       int16x8_t vprod2x01c0 = vmull_s8(vb01c0x0, va2x0);
301       vacc0x01 = vpadalq_s16(vacc0x01, vprod0x01c0);
302       vacc1x01 = vpadalq_s16(vacc1x01, vprod1x01c0);
303       vacc2x01 = vpadalq_s16(vacc2x01, vprod2x01c0);
304       int16x8_t vprod0x23c0 = vmull_s8(vb23c0x0, va0x0);
305       int16x8_t vprod1x23c0 = vmull_s8(vb23c0x0, va1x0);
306       int16x8_t vprod2x23c0 = vmull_s8(vb23c0x0, va2x0);
307       vacc0x23 = vpadalq_s16(vacc0x23, vprod0x23c0);
308       vacc1x23 = vpadalq_s16(vacc1x23, vprod1x23c0);
309       vacc2x23 = vpadalq_s16(vacc2x23, vprod2x23c0);
310       int16x8_t vprod0x45c0 = vmull_s8(vb45c0x0, va0x0);
311       int16x8_t vprod1x45c0 = vmull_s8(vb45c0x0, va1x0);
312       int16x8_t vprod2x45c0 = vmull_s8(vb45c0x0, va2x0);
313       vacc0x45 = vpadalq_s16(vacc0x45, vprod0x45c0);
314       vacc1x45 = vpadalq_s16(vacc1x45, vprod1x45c0);
315       vacc2x45 = vpadalq_s16(vacc2x45, vprod2x45c0);
316       int16x8_t vprod0x67c0 = vmull_s8(vb67c0x0, va0x0);
317       int16x8_t vprod1x67c0 = vmull_s8(vb67c0x0, va1x0);
318       int16x8_t vprod2x67c0 = vmull_s8(vb67c0x0, va2x0);
319       vacc0x67 = vpadalq_s16(vacc0x67, vprod0x67c0);
320       vacc1x67 = vpadalq_s16(vacc1x67, vprod1x67c0);
321       vacc2x67 = vpadalq_s16(vacc2x67, vprod2x67c0);
322       int16x8_t vprod0x89c0 = vmull_s8(vb89c0x0, va0x0);
323       int16x8_t vprod1x89c0 = vmull_s8(vb89c0x0, va1x0);
324       int16x8_t vprod2x89c0 = vmull_s8(vb89c0x0, va2x0);
325       vacc0x89 = vpadalq_s16(vacc0x89, vprod0x89c0);
326       vacc1x89 = vpadalq_s16(vacc1x89, vprod1x89c0);
327       vacc2x89 = vpadalq_s16(vacc2x89, vprod2x89c0);
328       int16x8_t vprod0xABc0 = vmull_s8(vbABc0x0, va0x0);
329       int16x8_t vprod1xABc0 = vmull_s8(vbABc0x0, va1x0);
330       int16x8_t vprod2xABc0 = vmull_s8(vbABc0x0, va2x0);
331       vacc0xAB = vpadalq_s16(vacc0xAB, vprod0xABc0);
332       vacc1xAB = vpadalq_s16(vacc1xAB, vprod1xABc0);
333       vacc2xAB = vpadalq_s16(vacc2xAB, vprod2xABc0);
334       int16x8_t vprod0xCDc0 = vmull_s8(vbCDc0x0, va0x0);
335       int16x8_t vprod1xCDc0 = vmull_s8(vbCDc0x0, va1x0);
336       int16x8_t vprod2xCDc0 = vmull_s8(vbCDc0x0, va2x0);
337       vacc0xCD = vpadalq_s16(vacc0xCD, vprod0xCDc0);
338       vacc1xCD = vpadalq_s16(vacc1xCD, vprod1xCDc0);
339       vacc2xCD = vpadalq_s16(vacc2xCD, vprod2xCDc0);
340       int16x8_t vprod0xEFc0 = vmull_s8(vbEFc0x0, va0x0);
341       int16x8_t vprod1xEFc0 = vmull_s8(vbEFc0x0, va1x0);
342       int16x8_t vprod2xEFc0 = vmull_s8(vbEFc0x0, va2x0);
343       vacc0xEF = vpadalq_s16(vacc0xEF, vprod0xEFc0);
344       vacc1xEF = vpadalq_s16(vacc1xEF, vprod1xEFc0);
345       vacc2xEF = vpadalq_s16(vacc2xEF, vprod2xEFc0);
346       va0x0 = vext_s8(va0x0, va0x0, 4);
347       va1x0 = vext_s8(va1x0, va1x0, 4);
348       va2x0 = vext_s8(va2x0, va2x0, 4);
349       int16x8_t vprod0x01c1 = vmull_s8(vb01c1x0, va0x0);
350       int16x8_t vprod1x01c1 = vmull_s8(vb01c1x0, va1x0);
351       int16x8_t vprod2x01c1 = vmull_s8(vb01c1x0, va2x0);
352       vacc0x01 = vpadalq_s16(vacc0x01, vprod0x01c1);
353       vacc1x01 = vpadalq_s16(vacc1x01, vprod1x01c1);
354       vacc2x01 = vpadalq_s16(vacc2x01, vprod2x01c1);
355       int16x8_t vprod0x23c1 = vmull_s8(vb23c1x0, va0x0);
356       int16x8_t vprod1x23c1 = vmull_s8(vb23c1x0, va1x0);
357       int16x8_t vprod2x23c1 = vmull_s8(vb23c1x0, va2x0);
358       vacc0x23 = vpadalq_s16(vacc0x23, vprod0x23c1);
359       vacc1x23 = vpadalq_s16(vacc1x23, vprod1x23c1);
360       vacc2x23 = vpadalq_s16(vacc2x23, vprod2x23c1);
361       int16x8_t vprod0x45c1 = vmull_s8(vb45c1x0, va0x0);
362       int16x8_t vprod1x45c1 = vmull_s8(vb45c1x0, va1x0);
363       int16x8_t vprod2x45c1 = vmull_s8(vb45c1x0, va2x0);
364       vacc0x45 = vpadalq_s16(vacc0x45, vprod0x45c1);
365       vacc1x45 = vpadalq_s16(vacc1x45, vprod1x45c1);
366       vacc2x45 = vpadalq_s16(vacc2x45, vprod2x45c1);
367       int16x8_t vprod0x67c1 = vmull_s8(vb67c1x0, va0x0);
368       int16x8_t vprod1x67c1 = vmull_s8(vb67c1x0, va1x0);
369       int16x8_t vprod2x67c1 = vmull_s8(vb67c1x0, va2x0);
370       vacc0x67 = vpadalq_s16(vacc0x67, vprod0x67c1);
371       vacc1x67 = vpadalq_s16(vacc1x67, vprod1x67c1);
372       vacc2x67 = vpadalq_s16(vacc2x67, vprod2x67c1);
373       int16x8_t vprod0x89c1 = vmull_s8(vb89c1x0, va0x0);
374       int16x8_t vprod1x89c1 = vmull_s8(vb89c1x0, va1x0);
375       int16x8_t vprod2x89c1 = vmull_s8(vb89c1x0, va2x0);
376       vacc0x89 = vpadalq_s16(vacc0x89, vprod0x89c1);
377       vacc1x89 = vpadalq_s16(vacc1x89, vprod1x89c1);
378       vacc2x89 = vpadalq_s16(vacc2x89, vprod2x89c1);
379       int16x8_t vprod0xABc1 = vmull_s8(vbABc1x0, va0x0);
380       int16x8_t vprod1xABc1 = vmull_s8(vbABc1x0, va1x0);
381       int16x8_t vprod2xABc1 = vmull_s8(vbABc1x0, va2x0);
382       vacc0xAB = vpadalq_s16(vacc0xAB, vprod0xABc1);
383       vacc1xAB = vpadalq_s16(vacc1xAB, vprod1xABc1);
384       vacc2xAB = vpadalq_s16(vacc2xAB, vprod2xABc1);
385       int16x8_t vprod0xCDc1 = vmull_s8(vbCDc1x0, va0x0);
386       int16x8_t vprod1xCDc1 = vmull_s8(vbCDc1x0, va1x0);
387       int16x8_t vprod2xCDc1 = vmull_s8(vbCDc1x0, va2x0);
388       vacc0xCD = vpadalq_s16(vacc0xCD, vprod0xCDc1);
389       vacc1xCD = vpadalq_s16(vacc1xCD, vprod1xCDc1);
390       vacc2xCD = vpadalq_s16(vacc2xCD, vprod2xCDc1);
391       int16x8_t vprod0xEFc1 = vmull_s8(vbEFc1x0, va0x0);
392       int16x8_t vprod1xEFc1 = vmull_s8(vbEFc1x0, va1x0);
393       int16x8_t vprod2xEFc1 = vmull_s8(vbEFc1x0, va2x0);
394       vacc0xEF = vpadalq_s16(vacc0xEF, vprod0xEFc1);
395       vacc1xEF = vpadalq_s16(vacc1xEF, vprod1xEFc1);
396       vacc2xEF = vpadalq_s16(vacc2xEF, vprod2xEFc1);
397 
398     }
399 
400 #if XNN_ARCH_ARM64
401     int32x4_t vacc0x0123 = vpaddq_s32(vacc0x01, vacc0x23);
402     int32x4_t vacc0x4567 = vpaddq_s32(vacc0x45, vacc0x67);
403     int32x4_t vacc0x89AB = vpaddq_s32(vacc0x89, vacc0xAB);
404     int32x4_t vacc0xCDEF = vpaddq_s32(vacc0xCD, vacc0xEF);
405     int32x4_t vacc1x0123 = vpaddq_s32(vacc1x01, vacc1x23);
406     int32x4_t vacc1x4567 = vpaddq_s32(vacc1x45, vacc1x67);
407     int32x4_t vacc1x89AB = vpaddq_s32(vacc1x89, vacc1xAB);
408     int32x4_t vacc1xCDEF = vpaddq_s32(vacc1xCD, vacc1xEF);
409     int32x4_t vacc2x0123 = vpaddq_s32(vacc2x01, vacc2x23);
410     int32x4_t vacc2x4567 = vpaddq_s32(vacc2x45, vacc2x67);
411     int32x4_t vacc2x89AB = vpaddq_s32(vacc2x89, vacc2xAB);
412     int32x4_t vacc2xCDEF = vpaddq_s32(vacc2xCD, vacc2xEF);
413 #else
414     const int32x2_t vsum0x01 = vpadd_s32(vget_low_s32(vacc0x01), vget_high_s32(vacc0x01));
415     const int32x2_t vsum0x23 = vpadd_s32(vget_low_s32(vacc0x23), vget_high_s32(vacc0x23));
416     int32x4_t vacc0x0123 = vcombine_s32(vsum0x01, vsum0x23);
417     const int32x2_t vsum0x45 = vpadd_s32(vget_low_s32(vacc0x45), vget_high_s32(vacc0x45));
418     const int32x2_t vsum0x67 = vpadd_s32(vget_low_s32(vacc0x67), vget_high_s32(vacc0x67));
419     int32x4_t vacc0x4567 = vcombine_s32(vsum0x45, vsum0x67);
420     const int32x2_t vsum0x89 = vpadd_s32(vget_low_s32(vacc0x89), vget_high_s32(vacc0x89));
421     const int32x2_t vsum0xAB = vpadd_s32(vget_low_s32(vacc0xAB), vget_high_s32(vacc0xAB));
422     int32x4_t vacc0x89AB = vcombine_s32(vsum0x89, vsum0xAB);
423     const int32x2_t vsum0xCD = vpadd_s32(vget_low_s32(vacc0xCD), vget_high_s32(vacc0xCD));
424     const int32x2_t vsum0xEF = vpadd_s32(vget_low_s32(vacc0xEF), vget_high_s32(vacc0xEF));
425     int32x4_t vacc0xCDEF = vcombine_s32(vsum0xCD, vsum0xEF);
426     const int32x2_t vsum1x01 = vpadd_s32(vget_low_s32(vacc1x01), vget_high_s32(vacc1x01));
427     const int32x2_t vsum1x23 = vpadd_s32(vget_low_s32(vacc1x23), vget_high_s32(vacc1x23));
428     int32x4_t vacc1x0123 = vcombine_s32(vsum1x01, vsum1x23);
429     const int32x2_t vsum1x45 = vpadd_s32(vget_low_s32(vacc1x45), vget_high_s32(vacc1x45));
430     const int32x2_t vsum1x67 = vpadd_s32(vget_low_s32(vacc1x67), vget_high_s32(vacc1x67));
431     int32x4_t vacc1x4567 = vcombine_s32(vsum1x45, vsum1x67);
432     const int32x2_t vsum1x89 = vpadd_s32(vget_low_s32(vacc1x89), vget_high_s32(vacc1x89));
433     const int32x2_t vsum1xAB = vpadd_s32(vget_low_s32(vacc1xAB), vget_high_s32(vacc1xAB));
434     int32x4_t vacc1x89AB = vcombine_s32(vsum1x89, vsum1xAB);
435     const int32x2_t vsum1xCD = vpadd_s32(vget_low_s32(vacc1xCD), vget_high_s32(vacc1xCD));
436     const int32x2_t vsum1xEF = vpadd_s32(vget_low_s32(vacc1xEF), vget_high_s32(vacc1xEF));
437     int32x4_t vacc1xCDEF = vcombine_s32(vsum1xCD, vsum1xEF);
438     const int32x2_t vsum2x01 = vpadd_s32(vget_low_s32(vacc2x01), vget_high_s32(vacc2x01));
439     const int32x2_t vsum2x23 = vpadd_s32(vget_low_s32(vacc2x23), vget_high_s32(vacc2x23));
440     int32x4_t vacc2x0123 = vcombine_s32(vsum2x01, vsum2x23);
441     const int32x2_t vsum2x45 = vpadd_s32(vget_low_s32(vacc2x45), vget_high_s32(vacc2x45));
442     const int32x2_t vsum2x67 = vpadd_s32(vget_low_s32(vacc2x67), vget_high_s32(vacc2x67));
443     int32x4_t vacc2x4567 = vcombine_s32(vsum2x45, vsum2x67);
444     const int32x2_t vsum2x89 = vpadd_s32(vget_low_s32(vacc2x89), vget_high_s32(vacc2x89));
445     const int32x2_t vsum2xAB = vpadd_s32(vget_low_s32(vacc2xAB), vget_high_s32(vacc2xAB));
446     int32x4_t vacc2x89AB = vcombine_s32(vsum2x89, vsum2xAB);
447     const int32x2_t vsum2xCD = vpadd_s32(vget_low_s32(vacc2xCD), vget_high_s32(vacc2xCD));
448     const int32x2_t vsum2xEF = vpadd_s32(vget_low_s32(vacc2xEF), vget_high_s32(vacc2xEF));
449     int32x4_t vacc2xCDEF = vcombine_s32(vsum2xCD, vsum2xEF);
450 #endif
451 
452     const int32x4_t vright_pre_shift = vld1q_dup_s32(&params->rndnu_neon.right_pre_shift);
453     const int32x4_t vmultiplier = vld1q_dup_s32(&params->rndnu_neon.multiplier);
454     const int32x4_t vright_post_shift = vld1q_dup_s32(&params->rndnu_neon.right_post_shift);
455 
456     vacc0x0123 = vqshlq_s32(vacc0x0123, vright_pre_shift);
457     vacc0x4567 = vqshlq_s32(vacc0x4567, vright_pre_shift);
458     vacc0x89AB = vqshlq_s32(vacc0x89AB, vright_pre_shift);
459     vacc0xCDEF = vqshlq_s32(vacc0xCDEF, vright_pre_shift);
460     vacc1x0123 = vqshlq_s32(vacc1x0123, vright_pre_shift);
461     vacc1x4567 = vqshlq_s32(vacc1x4567, vright_pre_shift);
462     vacc1x89AB = vqshlq_s32(vacc1x89AB, vright_pre_shift);
463     vacc1xCDEF = vqshlq_s32(vacc1xCDEF, vright_pre_shift);
464     vacc2x0123 = vqshlq_s32(vacc2x0123, vright_pre_shift);
465     vacc2x4567 = vqshlq_s32(vacc2x4567, vright_pre_shift);
466     vacc2x89AB = vqshlq_s32(vacc2x89AB, vright_pre_shift);
467     vacc2xCDEF = vqshlq_s32(vacc2xCDEF, vright_pre_shift);
468 
469     vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
470     vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
471     vacc0x89AB = vqdmulhq_s32(vacc0x89AB, vmultiplier);
472     vacc0xCDEF = vqdmulhq_s32(vacc0xCDEF, vmultiplier);
473     vacc1x0123 = vqdmulhq_s32(vacc1x0123, vmultiplier);
474     vacc1x4567 = vqdmulhq_s32(vacc1x4567, vmultiplier);
475     vacc1x89AB = vqdmulhq_s32(vacc1x89AB, vmultiplier);
476     vacc1xCDEF = vqdmulhq_s32(vacc1xCDEF, vmultiplier);
477     vacc2x0123 = vqdmulhq_s32(vacc2x0123, vmultiplier);
478     vacc2x4567 = vqdmulhq_s32(vacc2x4567, vmultiplier);
479     vacc2x89AB = vqdmulhq_s32(vacc2x89AB, vmultiplier);
480     vacc2xCDEF = vqdmulhq_s32(vacc2xCDEF, vmultiplier);
481 
482     vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
483     vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
484     vacc0x89AB = vrshlq_s32(vacc0x89AB, vright_post_shift);
485     vacc0xCDEF = vrshlq_s32(vacc0xCDEF, vright_post_shift);
486     vacc1x0123 = vrshlq_s32(vacc1x0123, vright_post_shift);
487     vacc1x4567 = vrshlq_s32(vacc1x4567, vright_post_shift);
488     vacc1x89AB = vrshlq_s32(vacc1x89AB, vright_post_shift);
489     vacc1xCDEF = vrshlq_s32(vacc1xCDEF, vright_post_shift);
490     vacc2x0123 = vrshlq_s32(vacc2x0123, vright_post_shift);
491     vacc2x4567 = vrshlq_s32(vacc2x4567, vright_post_shift);
492     vacc2x89AB = vrshlq_s32(vacc2x89AB, vright_post_shift);
493     vacc2xCDEF = vrshlq_s32(vacc2xCDEF, vright_post_shift);
494 
495     const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->rndnu_neon.output_zero_point);
496 #if XNN_ARCH_ARM64
497     int16x8_t vacc0x01234567 = vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567);
498     int16x8_t vacc0x89ABCDEF = vqmovn_high_s32(vqmovn_s32(vacc0x89AB), vacc0xCDEF);
499     int16x8_t vacc1x01234567 = vqmovn_high_s32(vqmovn_s32(vacc1x0123), vacc1x4567);
500     int16x8_t vacc1x89ABCDEF = vqmovn_high_s32(vqmovn_s32(vacc1x89AB), vacc1xCDEF);
501     int16x8_t vacc2x01234567 = vqmovn_high_s32(vqmovn_s32(vacc2x0123), vacc2x4567);
502     int16x8_t vacc2x89ABCDEF = vqmovn_high_s32(vqmovn_s32(vacc2x89AB), vacc2xCDEF);
503 
504     vacc0x01234567 = vqaddq_s16(vacc0x01234567, voutput_zero_point);
505     vacc0x89ABCDEF = vqaddq_s16(vacc0x89ABCDEF, voutput_zero_point);
506     vacc1x01234567 = vqaddq_s16(vacc1x01234567, voutput_zero_point);
507     vacc1x89ABCDEF = vqaddq_s16(vacc1x89ABCDEF, voutput_zero_point);
508     vacc2x01234567 = vqaddq_s16(vacc2x01234567, voutput_zero_point);
509     vacc2x89ABCDEF = vqaddq_s16(vacc2x89ABCDEF, voutput_zero_point);
510 
511     int8x16_t vout0x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc0x01234567), vacc0x89ABCDEF);
512     int8x16_t vout1x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc1x01234567), vacc1x89ABCDEF);
513     int8x16_t vout2x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc2x01234567), vacc2x89ABCDEF);
514 #else
515     int16x8_t vacc0x01234567 = vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567));
516     int16x8_t vacc0x89ABCDEF = vcombine_s16(vqmovn_s32(vacc0x89AB), vqmovn_s32(vacc0xCDEF));
517     int16x8_t vacc1x01234567 = vcombine_s16(vqmovn_s32(vacc1x0123), vqmovn_s32(vacc1x4567));
518     int16x8_t vacc1x89ABCDEF = vcombine_s16(vqmovn_s32(vacc1x89AB), vqmovn_s32(vacc1xCDEF));
519     int16x8_t vacc2x01234567 = vcombine_s16(vqmovn_s32(vacc2x0123), vqmovn_s32(vacc2x4567));
520     int16x8_t vacc2x89ABCDEF = vcombine_s16(vqmovn_s32(vacc2x89AB), vqmovn_s32(vacc2xCDEF));
521 
522     vacc0x01234567 = vqaddq_s16(vacc0x01234567, voutput_zero_point);
523     vacc0x89ABCDEF = vqaddq_s16(vacc0x89ABCDEF, voutput_zero_point);
524     vacc1x01234567 = vqaddq_s16(vacc1x01234567, voutput_zero_point);
525     vacc1x89ABCDEF = vqaddq_s16(vacc1x89ABCDEF, voutput_zero_point);
526     vacc2x01234567 = vqaddq_s16(vacc2x01234567, voutput_zero_point);
527     vacc2x89ABCDEF = vqaddq_s16(vacc2x89ABCDEF, voutput_zero_point);
528 
529     int8x16_t vout0x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc0x01234567), vqmovn_s16(vacc0x89ABCDEF));
530     int8x16_t vout1x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc1x01234567), vqmovn_s16(vacc1x89ABCDEF));
531     int8x16_t vout2x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc2x01234567), vqmovn_s16(vacc2x89ABCDEF));
532 #endif
533 
534     const int8x16_t voutput_min = vld1q_dup_s8(&params->rndnu_neon.output_min);
535     vout0x0123456789ABCDEF = vmaxq_s8(vout0x0123456789ABCDEF, voutput_min);
536     vout1x0123456789ABCDEF = vmaxq_s8(vout1x0123456789ABCDEF, voutput_min);
537     vout2x0123456789ABCDEF = vmaxq_s8(vout2x0123456789ABCDEF, voutput_min);
538 
539     const int8x16_t voutput_max = vld1q_dup_s8(&params->rndnu_neon.output_max);
540     vout0x0123456789ABCDEF = vminq_s8(vout0x0123456789ABCDEF, voutput_max);
541     vout1x0123456789ABCDEF = vminq_s8(vout1x0123456789ABCDEF, voutput_max);
542     vout2x0123456789ABCDEF = vminq_s8(vout2x0123456789ABCDEF, voutput_max);
543 
544     if (nc >= 16) {
545       vst1q_s8(c0 + 0, vout0x0123456789ABCDEF);
546       vst1q_s8(c1 + 0, vout1x0123456789ABCDEF);
547       vst1q_s8(c2 + 0, vout2x0123456789ABCDEF);
548 
549       c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
550       c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
551       c2 = (int8_t*) ((uintptr_t) c2 + cn_stride);
552 
553       a0 = (const int8_t*) ((uintptr_t) a0 - kc);
554       a1 = (const int8_t*) ((uintptr_t) a1 - kc);
555       a2 = (const int8_t*) ((uintptr_t) a2 - kc);
556 
557       nc -= 16;
558     } else {
559       // Final case where not all of the 16 columns fit in the destination.
560       int8x16_t vout0x01234567_1x01234567 = vcombine_s8(vget_low_s8(vout0x0123456789ABCDEF), vget_low_s8(vout1x0123456789ABCDEF));
561       int8x8_t vout2x01234567 = vget_low_s8(vout2x0123456789ABCDEF);
562       if (nc & 8) {
563         vst1_s8(c0, vget_low_s8(vout0x01234567_1x01234567)); c0 += 8;
564         vst1_s8(c1, vget_high_s8(vout0x01234567_1x01234567)); c1 += 8;
565         vst1_s8(c2, vout2x01234567); c2 += 8;
566         vout0x01234567_1x01234567 = vcombine_s8(vget_high_s8(vout0x0123456789ABCDEF), vget_high_s8(vout1x0123456789ABCDEF));
567         vout2x01234567 = vget_high_s8(vout2x0123456789ABCDEF);
568       }
569       if (nc & 4) {
570         vst1q_lane_u32((void*) c0, vreinterpretq_u32_s8(vout0x01234567_1x01234567), 0); c0 += 4;
571         vst1q_lane_u32((void*) c1, vreinterpretq_u32_s8(vout0x01234567_1x01234567), 2); c1 += 4;
572         vst1_lane_u32((void*) c2, vreinterpret_u32_s8(vout2x01234567), 0); c2 += 4;
573         vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 4);
574         vout2x01234567 = vext_s8(vout2x01234567, vout2x01234567, 4);
575       }
576       if (nc & 2) {
577         vst1q_lane_u16((void*) c0, vreinterpretq_u16_s8(vout0x01234567_1x01234567), 0); c0 += 2;
578         vst1q_lane_u16((void*) c1, vreinterpretq_u16_s8(vout0x01234567_1x01234567), 4); c1 += 2;
579         vst1_lane_u16((void*) c2, vreinterpret_u16_s8(vout2x01234567), 0); c2 += 2;
580         vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 2);
581         vout2x01234567 = vext_s8(vout2x01234567, vout2x01234567, 2);
582       }
583       if (nc & 1) {
584         vst1q_lane_s8(c0, vout0x01234567_1x01234567, 0);
585         vst1q_lane_s8(c1, vout0x01234567_1x01234567, 8);
586         vst1_lane_s8(c2, vout2x01234567, 0);
587       }
588 
589       nc = 0;
590     }
591   } while (nc != 0);
592 }
593