xref: /aosp_15_r20/external/XNNPACK/src/bf16-gemm/gen/4x4c8-minmax-neonfma-shland.c (revision 4bdc94577ba0e567308109d787f7fec7b531ce36)
1 // Auto-generated file. Do not edit!
2 //   Template: src/bf16-gemm/c8-neon.c.in
3 //   Generator: tools/xngen
4 //
5 // Copyright 2022 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 
11 #include <assert.h>
12 
13 #include <arm_neon.h>
14 
15 #include <xnnpack/gemm.h>
16 
17 
xnn_bf16_gemm_minmax_ukernel_4x4c8__neonfma_shland(size_t mr,size_t nc,size_t kc,const void * restrict a,size_t a_stride,const void * restrict w_ptr,void * restrict c,size_t cm_stride,size_t cn_stride,const union xnn_bf16_minmax_params params[restrict XNN_MIN_ELEMENTS (1)])18 void xnn_bf16_gemm_minmax_ukernel_4x4c8__neonfma_shland(
19     size_t mr,
20     size_t nc,
21     size_t kc,
22     const void* restrict a,
23     size_t a_stride,
24     const void* restrict w_ptr,
25     void* restrict c,
26     size_t cm_stride,
27     size_t cn_stride,
28     const union xnn_bf16_minmax_params params[restrict XNN_MIN_ELEMENTS(1)])
29 {
30   assert(mr != 0);
31   assert(mr <= 4);
32   assert(nc != 0);
33   assert(kc != 0);
34   assert(kc % sizeof(uint16_t) == 0);
35   assert(a != NULL);
36   assert(w_ptr != NULL);
37   assert(c != NULL);
38 
39   const uint16_t* a0 = (const uint16_t*) a;
40   uint16_t* c0 = (uint16_t*) c;
41   const uint16_t* a1 = (const uint16_t*) ((uintptr_t) a0 + a_stride);
42   uint16_t* c1 = (uint16_t*) ((uintptr_t) c0 + cm_stride);
43   if XNN_UNPREDICTABLE(mr < 2) {
44     a1 = a0;
45     c1 = c0;
46   }
47   const uint16_t* a2 = (const uint16_t*) ((uintptr_t) a1 + a_stride);
48   uint16_t* c2 = (uint16_t*) ((uintptr_t) c1 + cm_stride);
49   if XNN_UNPREDICTABLE(mr <= 2) {
50     a2 = a1;
51     c2 = c1;
52   }
53   const uint16_t* a3 = (const uint16_t*) ((uintptr_t) a2 + a_stride);
54   uint16_t* c3 = (uint16_t*) ((uintptr_t) c2 + cm_stride);
55   if XNN_UNPREDICTABLE(mr != 4) {
56     a3 = a2;
57     c3 = c2;
58   }
59 
60   const uint16_t* w = (const uint16_t*) w_ptr;
61   const uint16x8_t vmask = vreinterpretq_u16_u32(vmovq_n_u32(UINT32_C(0xFFFF0000)));
62   do {
63     float32x4_t vacc0x0 = vreinterpretq_f32_u32(vshll_n_u16(vld1_lane_u16(w, vdup_n_u16(0), 0), 16)); w += 1;
64     float32x4_t vacc0x1 = vreinterpretq_f32_u32(vshll_n_u16(vld1_lane_u16(w, vdup_n_u16(0), 0), 16)); w += 1;
65     float32x4_t vacc0x2 = vreinterpretq_f32_u32(vshll_n_u16(vld1_lane_u16(w, vdup_n_u16(0), 0), 16)); w += 1;
66     float32x4_t vacc0x3 = vreinterpretq_f32_u32(vshll_n_u16(vld1_lane_u16(w, vdup_n_u16(0), 0), 16)); w += 1;
67     float32x4_t vacc1x0 = vacc0x0;
68     float32x4_t vacc1x1 = vacc0x1;
69     float32x4_t vacc1x2 = vacc0x2;
70     float32x4_t vacc1x3 = vacc0x3;
71     float32x4_t vacc2x0 = vacc0x0;
72     float32x4_t vacc2x1 = vacc0x1;
73     float32x4_t vacc2x2 = vacc0x2;
74     float32x4_t vacc2x3 = vacc0x3;
75     float32x4_t vacc3x0 = vacc0x0;
76     float32x4_t vacc3x1 = vacc0x1;
77     float32x4_t vacc3x2 = vacc0x2;
78     float32x4_t vacc3x3 = vacc0x3;
79 
80     size_t k = kc;
81     for (; k >= 8 * sizeof(uint16_t); k -= 8 * sizeof(uint16_t)) {
82       const uint16x8_t va0 = vld1q_u16(a0); a0 += 8;
83       const uint16x8_t va1 = vld1q_u16(a1); a1 += 8;
84       const uint16x8_t va2 = vld1q_u16(a2); a2 += 8;
85       const uint16x8_t va3 = vld1q_u16(a3); a3 += 8;
86 
87       const uint16x8_t vb0 = vld1q_u16(w); w += 8;
88       const uint16x8_t vb1 = vld1q_u16(w); w += 8;
89       const uint16x8_t vb2 = vld1q_u16(w); w += 8;
90       const uint16x8_t vb3 = vld1q_u16(w); w += 8;
91 
92       const float32x4_t va0e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(va0), 16));
93       const float32x4_t va1e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(va1), 16));
94       const float32x4_t va2e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(va2), 16));
95       const float32x4_t va3e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(va3), 16));
96 
97       const float32x4_t vb0e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(vb0), 16));
98       const float32x4_t vb1e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(vb1), 16));
99       const float32x4_t vb2e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(vb2), 16));
100       const float32x4_t vb3e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(vb3), 16));
101 
102       vacc0x0 = vfmaq_f32(vacc0x0, va0e, vb0e);
103       vacc1x0 = vfmaq_f32(vacc1x0, va1e, vb0e);
104       vacc2x0 = vfmaq_f32(vacc2x0, va2e, vb0e);
105       vacc3x0 = vfmaq_f32(vacc3x0, va3e, vb0e);
106       vacc0x1 = vfmaq_f32(vacc0x1, va0e, vb1e);
107       vacc1x1 = vfmaq_f32(vacc1x1, va1e, vb1e);
108       vacc2x1 = vfmaq_f32(vacc2x1, va2e, vb1e);
109       vacc3x1 = vfmaq_f32(vacc3x1, va3e, vb1e);
110       vacc0x2 = vfmaq_f32(vacc0x2, va0e, vb2e);
111       vacc1x2 = vfmaq_f32(vacc1x2, va1e, vb2e);
112       vacc2x2 = vfmaq_f32(vacc2x2, va2e, vb2e);
113       vacc3x2 = vfmaq_f32(vacc3x2, va3e, vb2e);
114       vacc0x3 = vfmaq_f32(vacc0x3, va0e, vb3e);
115       vacc1x3 = vfmaq_f32(vacc1x3, va1e, vb3e);
116       vacc2x3 = vfmaq_f32(vacc2x3, va2e, vb3e);
117       vacc3x3 = vfmaq_f32(vacc3x3, va3e, vb3e);
118 
119       const float32x4_t va0o = vreinterpretq_f32_u16(vandq_u16(va0, vmask));
120       const float32x4_t va1o = vreinterpretq_f32_u16(vandq_u16(va1, vmask));
121       const float32x4_t va2o = vreinterpretq_f32_u16(vandq_u16(va2, vmask));
122       const float32x4_t va3o = vreinterpretq_f32_u16(vandq_u16(va3, vmask));
123 
124       const float32x4_t vb0o = vreinterpretq_f32_u16(vandq_u16(vb0, vmask));
125       const float32x4_t vb1o = vreinterpretq_f32_u16(vandq_u16(vb1, vmask));
126       const float32x4_t vb2o = vreinterpretq_f32_u16(vandq_u16(vb2, vmask));
127       const float32x4_t vb3o = vreinterpretq_f32_u16(vandq_u16(vb3, vmask));
128 
129       vacc0x0 = vfmaq_f32(vacc0x0, va0o, vb0o);
130       vacc1x0 = vfmaq_f32(vacc1x0, va1o, vb0o);
131       vacc2x0 = vfmaq_f32(vacc2x0, va2o, vb0o);
132       vacc3x0 = vfmaq_f32(vacc3x0, va3o, vb0o);
133       vacc0x1 = vfmaq_f32(vacc0x1, va0o, vb1o);
134       vacc1x1 = vfmaq_f32(vacc1x1, va1o, vb1o);
135       vacc2x1 = vfmaq_f32(vacc2x1, va2o, vb1o);
136       vacc3x1 = vfmaq_f32(vacc3x1, va3o, vb1o);
137       vacc0x2 = vfmaq_f32(vacc0x2, va0o, vb2o);
138       vacc1x2 = vfmaq_f32(vacc1x2, va1o, vb2o);
139       vacc2x2 = vfmaq_f32(vacc2x2, va2o, vb2o);
140       vacc3x2 = vfmaq_f32(vacc3x2, va3o, vb2o);
141       vacc0x3 = vfmaq_f32(vacc0x3, va0o, vb3o);
142       vacc1x3 = vfmaq_f32(vacc1x3, va1o, vb3o);
143       vacc2x3 = vfmaq_f32(vacc2x3, va2o, vb3o);
144       vacc3x3 = vfmaq_f32(vacc3x3, va3o, vb3o);
145     }
146     if XNN_UNLIKELY(k != 0) {
147       const uint16x8_t va0 = vld1q_u16(a0); a0 = (const uint16_t*) ((uintptr_t) a0 + k);
148       const uint16x8_t va1 = vld1q_u16(a1); a1 = (const uint16_t*) ((uintptr_t) a1 + k);
149       const uint16x8_t va2 = vld1q_u16(a2); a2 = (const uint16_t*) ((uintptr_t) a2 + k);
150       const uint16x8_t va3 = vld1q_u16(a3); a3 = (const uint16_t*) ((uintptr_t) a3 + k);
151 
152       const uint16x8_t vb0 = vld1q_u16(w); w += 8;
153       const uint16x8_t vb1 = vld1q_u16(w); w += 8;
154       const uint16x8_t vb2 = vld1q_u16(w); w += 8;
155       const uint16x8_t vb3 = vld1q_u16(w); w += 8;
156 
157       const uint16x8_t vm0 = vceqq_u16(vb0, vmovq_n_u16(0));
158       const uint16x8_t vm1 = vceqq_u16(vb1, vmovq_n_u16(0));
159       const uint16x8_t vm2 = vceqq_u16(vb2, vmovq_n_u16(0));
160       const uint16x8_t vm3 = vceqq_u16(vb3, vmovq_n_u16(0));
161 
162       const float32x4_t vb0e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(vb0), 16));
163       const float32x4_t vb1e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(vb1), 16));
164       const float32x4_t vb2e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(vb2), 16));
165       const float32x4_t vb3e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(vb3), 16));
166 
167       const uint16x8_t va0x0 = vbicq_u16(va0, vm0);
168       const uint16x8_t va1x0 = vbicq_u16(va1, vm0);
169       const uint16x8_t va2x0 = vbicq_u16(va2, vm0);
170       const uint16x8_t va3x0 = vbicq_u16(va3, vm0);
171       const uint16x8_t va0x1 = vbicq_u16(va0, vm1);
172       const uint16x8_t va1x1 = vbicq_u16(va1, vm1);
173       const uint16x8_t va2x1 = vbicq_u16(va2, vm1);
174       const uint16x8_t va3x1 = vbicq_u16(va3, vm1);
175       const uint16x8_t va0x2 = vbicq_u16(va0, vm2);
176       const uint16x8_t va1x2 = vbicq_u16(va1, vm2);
177       const uint16x8_t va2x2 = vbicq_u16(va2, vm2);
178       const uint16x8_t va3x2 = vbicq_u16(va3, vm2);
179       const uint16x8_t va0x3 = vbicq_u16(va0, vm3);
180       const uint16x8_t va1x3 = vbicq_u16(va1, vm3);
181       const uint16x8_t va2x3 = vbicq_u16(va2, vm3);
182       const uint16x8_t va3x3 = vbicq_u16(va3, vm3);
183 
184       const float32x4_t va0x0e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(va0x0), 16));
185       const float32x4_t va1x0e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(va1x0), 16));
186       const float32x4_t va2x0e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(va2x0), 16));
187       const float32x4_t va3x0e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(va3x0), 16));
188       const float32x4_t va0x1e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(va0x1), 16));
189       const float32x4_t va1x1e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(va1x1), 16));
190       const float32x4_t va2x1e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(va2x1), 16));
191       const float32x4_t va3x1e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(va3x1), 16));
192       const float32x4_t va0x2e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(va0x2), 16));
193       const float32x4_t va1x2e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(va1x2), 16));
194       const float32x4_t va2x2e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(va2x2), 16));
195       const float32x4_t va3x2e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(va3x2), 16));
196       const float32x4_t va0x3e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(va0x3), 16));
197       const float32x4_t va1x3e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(va1x3), 16));
198       const float32x4_t va2x3e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(va2x3), 16));
199       const float32x4_t va3x3e = vreinterpretq_f32_u32(vshlq_n_u32(vreinterpretq_u32_u16(va3x3), 16));
200 
201       vacc0x0 = vfmaq_f32(vacc0x0, va0x0e, vb0e);
202       vacc1x0 = vfmaq_f32(vacc1x0, va1x0e, vb0e);
203       vacc2x0 = vfmaq_f32(vacc2x0, va2x0e, vb0e);
204       vacc3x0 = vfmaq_f32(vacc3x0, va3x0e, vb0e);
205       vacc0x1 = vfmaq_f32(vacc0x1, va0x1e, vb1e);
206       vacc1x1 = vfmaq_f32(vacc1x1, va1x1e, vb1e);
207       vacc2x1 = vfmaq_f32(vacc2x1, va2x1e, vb1e);
208       vacc3x1 = vfmaq_f32(vacc3x1, va3x1e, vb1e);
209       vacc0x2 = vfmaq_f32(vacc0x2, va0x2e, vb2e);
210       vacc1x2 = vfmaq_f32(vacc1x2, va1x2e, vb2e);
211       vacc2x2 = vfmaq_f32(vacc2x2, va2x2e, vb2e);
212       vacc3x2 = vfmaq_f32(vacc3x2, va3x2e, vb2e);
213       vacc0x3 = vfmaq_f32(vacc0x3, va0x3e, vb3e);
214       vacc1x3 = vfmaq_f32(vacc1x3, va1x3e, vb3e);
215       vacc2x3 = vfmaq_f32(vacc2x3, va2x3e, vb3e);
216       vacc3x3 = vfmaq_f32(vacc3x3, va3x3e, vb3e);
217 
218       const float32x4_t vb0o = vreinterpretq_f32_u16(vandq_u16(vb0, vmask));
219       const float32x4_t vb1o = vreinterpretq_f32_u16(vandq_u16(vb1, vmask));
220       const float32x4_t vb2o = vreinterpretq_f32_u16(vandq_u16(vb2, vmask));
221       const float32x4_t vb3o = vreinterpretq_f32_u16(vandq_u16(vb3, vmask));
222 
223       const float32x4_t va0x0o = vreinterpretq_f32_u16(vandq_u16(va0x0, vmask));
224       const float32x4_t va1x0o = vreinterpretq_f32_u16(vandq_u16(va1x0, vmask));
225       const float32x4_t va2x0o = vreinterpretq_f32_u16(vandq_u16(va2x0, vmask));
226       const float32x4_t va3x0o = vreinterpretq_f32_u16(vandq_u16(va3x0, vmask));
227       const float32x4_t va0x1o = vreinterpretq_f32_u16(vandq_u16(va0x1, vmask));
228       const float32x4_t va1x1o = vreinterpretq_f32_u16(vandq_u16(va1x1, vmask));
229       const float32x4_t va2x1o = vreinterpretq_f32_u16(vandq_u16(va2x1, vmask));
230       const float32x4_t va3x1o = vreinterpretq_f32_u16(vandq_u16(va3x1, vmask));
231       const float32x4_t va0x2o = vreinterpretq_f32_u16(vandq_u16(va0x2, vmask));
232       const float32x4_t va1x2o = vreinterpretq_f32_u16(vandq_u16(va1x2, vmask));
233       const float32x4_t va2x2o = vreinterpretq_f32_u16(vandq_u16(va2x2, vmask));
234       const float32x4_t va3x2o = vreinterpretq_f32_u16(vandq_u16(va3x2, vmask));
235       const float32x4_t va0x3o = vreinterpretq_f32_u16(vandq_u16(va0x3, vmask));
236       const float32x4_t va1x3o = vreinterpretq_f32_u16(vandq_u16(va1x3, vmask));
237       const float32x4_t va2x3o = vreinterpretq_f32_u16(vandq_u16(va2x3, vmask));
238       const float32x4_t va3x3o = vreinterpretq_f32_u16(vandq_u16(va3x3, vmask));
239 
240       vacc0x0 = vfmaq_f32(vacc0x0, va0x0o, vb0o);
241       vacc1x0 = vfmaq_f32(vacc1x0, va1x0o, vb0o);
242       vacc2x0 = vfmaq_f32(vacc2x0, va2x0o, vb0o);
243       vacc3x0 = vfmaq_f32(vacc3x0, va3x0o, vb0o);
244       vacc0x1 = vfmaq_f32(vacc0x1, va0x1o, vb1o);
245       vacc1x1 = vfmaq_f32(vacc1x1, va1x1o, vb1o);
246       vacc2x1 = vfmaq_f32(vacc2x1, va2x1o, vb1o);
247       vacc3x1 = vfmaq_f32(vacc3x1, va3x1o, vb1o);
248       vacc0x2 = vfmaq_f32(vacc0x2, va0x2o, vb2o);
249       vacc1x2 = vfmaq_f32(vacc1x2, va1x2o, vb2o);
250       vacc2x2 = vfmaq_f32(vacc2x2, va2x2o, vb2o);
251       vacc3x2 = vfmaq_f32(vacc3x2, va3x2o, vb2o);
252       vacc0x3 = vfmaq_f32(vacc0x3, va0x3o, vb3o);
253       vacc1x3 = vfmaq_f32(vacc1x3, va1x3o, vb3o);
254       vacc2x3 = vfmaq_f32(vacc2x3, va2x3o, vb3o);
255       vacc3x3 = vfmaq_f32(vacc3x3, va3x3o, vb3o);
256     }
257 
258 #if XNN_ARCH_ARM64
259     const float32x4_t vacc0x01 = vpaddq_f32(vacc0x0, vacc0x1);
260     const float32x4_t vacc1x01 = vpaddq_f32(vacc1x0, vacc1x1);
261     const float32x4_t vacc2x01 = vpaddq_f32(vacc2x0, vacc2x1);
262     const float32x4_t vacc3x01 = vpaddq_f32(vacc3x0, vacc3x1);
263     const float32x4_t vacc0x23 = vpaddq_f32(vacc0x2, vacc0x3);
264     const float32x4_t vacc1x23 = vpaddq_f32(vacc1x2, vacc1x3);
265     const float32x4_t vacc2x23 = vpaddq_f32(vacc2x2, vacc2x3);
266     const float32x4_t vacc3x23 = vpaddq_f32(vacc3x2, vacc3x3);
267 
268     float32x4_t vacc0x0123 = vpaddq_f32(vacc0x01, vacc0x23);
269     float32x4_t vacc1x0123 = vpaddq_f32(vacc1x01, vacc1x23);
270     float32x4_t vacc2x0123 = vpaddq_f32(vacc2x01, vacc2x23);
271     float32x4_t vacc3x0123 = vpaddq_f32(vacc3x01, vacc3x23);
272 #else
273     const float32x2_t vsum0x0 = vadd_f32(vget_low_f32(vacc0x0), vget_high_f32(vacc0x0));
274     const float32x2_t vsum1x0 = vadd_f32(vget_low_f32(vacc1x0), vget_high_f32(vacc1x0));
275     const float32x2_t vsum2x0 = vadd_f32(vget_low_f32(vacc2x0), vget_high_f32(vacc2x0));
276     const float32x2_t vsum3x0 = vadd_f32(vget_low_f32(vacc3x0), vget_high_f32(vacc3x0));
277     const float32x2_t vsum0x1 = vadd_f32(vget_low_f32(vacc0x1), vget_high_f32(vacc0x1));
278     const float32x2_t vsum1x1 = vadd_f32(vget_low_f32(vacc1x1), vget_high_f32(vacc1x1));
279     const float32x2_t vsum2x1 = vadd_f32(vget_low_f32(vacc2x1), vget_high_f32(vacc2x1));
280     const float32x2_t vsum3x1 = vadd_f32(vget_low_f32(vacc3x1), vget_high_f32(vacc3x1));
281     const float32x2_t vsum0x2 = vadd_f32(vget_low_f32(vacc0x2), vget_high_f32(vacc0x2));
282     const float32x2_t vsum1x2 = vadd_f32(vget_low_f32(vacc1x2), vget_high_f32(vacc1x2));
283     const float32x2_t vsum2x2 = vadd_f32(vget_low_f32(vacc2x2), vget_high_f32(vacc2x2));
284     const float32x2_t vsum3x2 = vadd_f32(vget_low_f32(vacc3x2), vget_high_f32(vacc3x2));
285     const float32x2_t vsum0x3 = vadd_f32(vget_low_f32(vacc0x3), vget_high_f32(vacc0x3));
286     const float32x2_t vsum1x3 = vadd_f32(vget_low_f32(vacc1x3), vget_high_f32(vacc1x3));
287     const float32x2_t vsum2x3 = vadd_f32(vget_low_f32(vacc2x3), vget_high_f32(vacc2x3));
288     const float32x2_t vsum3x3 = vadd_f32(vget_low_f32(vacc3x3), vget_high_f32(vacc3x3));
289 
290     float32x4_t vacc0x0123 = vcombine_f32(vpadd_f32(vsum0x0, vsum0x1), vpadd_f32(vsum0x2, vsum0x3));
291     float32x4_t vacc1x0123 = vcombine_f32(vpadd_f32(vsum1x0, vsum1x1), vpadd_f32(vsum1x2, vsum1x3));
292     float32x4_t vacc2x0123 = vcombine_f32(vpadd_f32(vsum2x0, vsum2x1), vpadd_f32(vsum2x2, vsum2x3));
293     float32x4_t vacc3x0123 = vcombine_f32(vpadd_f32(vsum3x0, vsum3x1), vpadd_f32(vsum3x2, vsum3x3));
294 #endif
295 
296     const float32x4_t vmax = vld1q_dup_f32(&params->scalar.max);
297     vacc0x0123 = vminq_f32(vacc0x0123, vmax);
298     vacc1x0123 = vminq_f32(vacc1x0123, vmax);
299     vacc2x0123 = vminq_f32(vacc2x0123, vmax);
300     vacc3x0123 = vminq_f32(vacc3x0123, vmax);
301 
302     const float32x4_t vmin = vld1q_dup_f32(&params->scalar.min);
303     vacc0x0123 = vmaxq_f32(vacc0x0123, vmin);
304     vacc1x0123 = vmaxq_f32(vacc1x0123, vmin);
305     vacc2x0123 = vmaxq_f32(vacc2x0123, vmin);
306     vacc3x0123 = vmaxq_f32(vacc3x0123, vmin);
307 
308     uint16x4_t vout0x0123 = vshrn_n_u32(vreinterpretq_u32_f32(vacc0x0123), 16);
309     uint16x4_t vout1x0123 = vshrn_n_u32(vreinterpretq_u32_f32(vacc1x0123), 16);
310     uint16x4_t vout2x0123 = vshrn_n_u32(vreinterpretq_u32_f32(vacc2x0123), 16);
311     uint16x4_t vout3x0123 = vshrn_n_u32(vreinterpretq_u32_f32(vacc3x0123), 16);
312 
313     if XNN_LIKELY(nc >= 4) {
314       vst1_u16(c0, vout0x0123);
315       c0 = (uint16_t*) ((uintptr_t) c0 + cn_stride);
316       vst1_u16(c1, vout1x0123);
317       c1 = (uint16_t*) ((uintptr_t) c1 + cn_stride);
318       vst1_u16(c2, vout2x0123);
319       c2 = (uint16_t*) ((uintptr_t) c2 + cn_stride);
320       vst1_u16(c3, vout3x0123);
321       c3 = (uint16_t*) ((uintptr_t) c3 + cn_stride);
322 
323       a0 = (const uint16_t*) ((uintptr_t) a0 - kc);
324       a1 = (const uint16_t*) ((uintptr_t) a1 - kc);
325       a2 = (const uint16_t*) ((uintptr_t) a2 - kc);
326       a3 = (const uint16_t*) ((uintptr_t) a3 - kc);
327 
328       nc -= 4;
329     } else {
330       if (nc & 2) {
331         vst1_lane_u32((void*) c0, vreinterpret_u32_u16(vout0x0123), 0); c0 += 2;
332         vst1_lane_u32((void*) c1, vreinterpret_u32_u16(vout1x0123), 0); c1 += 2;
333         vst1_lane_u32((void*) c2, vreinterpret_u32_u16(vout2x0123), 0); c2 += 2;
334         vst1_lane_u32((void*) c3, vreinterpret_u32_u16(vout3x0123), 0); c3 += 2;
335 
336         vout0x0123 = vext_u16(vout0x0123, vout0x0123, 2);
337         vout1x0123 = vext_u16(vout1x0123, vout1x0123, 2);
338         vout2x0123 = vext_u16(vout2x0123, vout2x0123, 2);
339         vout3x0123 = vext_u16(vout3x0123, vout3x0123, 2);
340       }
341       if (nc & 1) {
342         vst1_lane_u16(c0, vout0x0123, 0);
343         vst1_lane_u16(c1, vout1x0123, 0);
344         vst1_lane_u16(c2, vout2x0123, 0);
345         vst1_lane_u16(c3, vout3x0123, 0);
346       }
347 
348       nc = 0;
349     }
350   } while (nc != 0);
351 }
352