1 // Auto-generated file. Do not edit!
2 // Template: src/qs8-igemm/MRx4c2-sse.c.in
3 // Generator: tools/xngen
4 //
5 // Copyright 2020 Google LLC
6 //
7 // This source code is licensed under the BSD-style license found in the
8 // LICENSE file in the root directory of this source tree.
9
10 #include <assert.h>
11
12 #include <tmmintrin.h>
13
14 #include <xnnpack/igemm.h>
15 #include <xnnpack/math.h>
16
17
xnn_qs8_igemm_minmax_ukernel_4x4c2__ssse3_ld128(size_t mr,size_t nc,size_t kc,size_t ks,const int8_t ** restrict a,const void * restrict w,int8_t * restrict c,size_t cm_stride,size_t cn_stride,size_t a_offset,const int8_t * zero,const union xnn_qs8_gemm_params params[restrict XNN_MIN_ELEMENTS (1)])18 void xnn_qs8_igemm_minmax_ukernel_4x4c2__ssse3_ld128(
19 size_t mr,
20 size_t nc,
21 size_t kc,
22 size_t ks,
23 const int8_t** restrict a,
24 const void* restrict w,
25 int8_t* restrict c,
26 size_t cm_stride,
27 size_t cn_stride,
28 size_t a_offset,
29 const int8_t* zero,
30 const union xnn_qs8_gemm_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN
31 {
32 assert(mr != 0);
33 assert(mr <= 4);
34 assert(nc != 0);
35 assert(kc != 0);
36 assert(ks != 0);
37 assert(ks % (4 * sizeof(void*)) == 0);
38 assert(a_offset % sizeof(int8_t) == 0);
39 assert(a != NULL);
40 assert(w != NULL);
41 assert(c != NULL);
42
43 kc = round_up_po2(kc, 2);
44 int8_t* c0 = c;
45 int8_t* c1 = (int8_t*) ((uintptr_t) c0 + cm_stride);
46 if XNN_UNPREDICTABLE(mr < 2) {
47 c1 = c0;
48 }
49 int8_t* c2 = (int8_t*) ((uintptr_t) c1 + cm_stride);
50 if XNN_UNPREDICTABLE(mr <= 2) {
51 c2 = c1;
52 }
53 int8_t* c3 = (int8_t*) ((uintptr_t) c2 + cm_stride);
54 if XNN_UNPREDICTABLE(mr != 4) {
55 c3 = c2;
56 }
57
58 do {
59 __m128i vacc0x0123 = _mm_loadu_si128((const __m128i*) w);
60 __m128i vacc1x0123 = vacc0x0123;
61 __m128i vacc2x0123 = vacc0x0123;
62 __m128i vacc3x0123 = vacc0x0123;
63 w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
64
65 size_t p = ks;
66 do {
67 const int8_t* restrict a0 = a[0];
68 if XNN_UNPREDICTABLE(a0 != zero) {
69 a0 = (const int8_t*) ((uintptr_t) a0 + a_offset);
70 }
71 const int8_t* restrict a1 = a[1];
72 if XNN_UNPREDICTABLE(a1 != zero) {
73 a1 = (const int8_t*) ((uintptr_t) a1 + a_offset);
74 }
75 const int8_t* restrict a2 = a[2];
76 if XNN_UNPREDICTABLE(a2 != zero) {
77 a2 = (const int8_t*) ((uintptr_t) a2 + a_offset);
78 }
79 const int8_t* restrict a3 = a[3];
80 if XNN_UNPREDICTABLE(a3 != zero) {
81 a3 = (const int8_t*) ((uintptr_t) a3 + a_offset);
82 }
83 a += 4;
84
85 size_t k = kc;
86 while (k >= 8 * sizeof(int8_t)) {
87 const __m128i va0 = _mm_loadl_epi64((const __m128i*) a0);
88 const __m128i vxa0 = _mm_unpacklo_epi8(va0, _mm_cmpgt_epi8(_mm_setzero_si128(), va0));
89 a0 += 8;
90 const __m128i va1 = _mm_loadl_epi64((const __m128i*) a1);
91 const __m128i vxa1 = _mm_unpacklo_epi8(va1, _mm_cmpgt_epi8(_mm_setzero_si128(), va1));
92 a1 += 8;
93 const __m128i va2 = _mm_loadl_epi64((const __m128i*) a2);
94 const __m128i vxa2 = _mm_unpacklo_epi8(va2, _mm_cmpgt_epi8(_mm_setzero_si128(), va2));
95 a2 += 8;
96 const __m128i va3 = _mm_loadl_epi64((const __m128i*) a3);
97 const __m128i vxa3 = _mm_unpacklo_epi8(va3, _mm_cmpgt_epi8(_mm_setzero_si128(), va3));
98 a3 += 8;
99
100 const __m128i vb01 = _mm_loadu_si128((const __m128i*) w);
101 const __m128i vsb01 = _mm_cmpgt_epi8(_mm_setzero_si128(), vb01);
102 const __m128i vxb0 = _mm_unpacklo_epi8(vb01, vsb01);
103 const __m128i vxb1 = _mm_unpackhi_epi8(vb01, vsb01);
104
105 vacc0x0123 = _mm_add_epi32(vacc0x0123,
106 _mm_madd_epi16(_mm_shuffle_epi32(vxa0, _MM_SHUFFLE(0, 0, 0, 0)), vxb0));
107 vacc1x0123 = _mm_add_epi32(vacc1x0123,
108 _mm_madd_epi16(_mm_shuffle_epi32(vxa1, _MM_SHUFFLE(0, 0, 0, 0)), vxb0));
109 vacc2x0123 = _mm_add_epi32(vacc2x0123,
110 _mm_madd_epi16(_mm_shuffle_epi32(vxa2, _MM_SHUFFLE(0, 0, 0, 0)), vxb0));
111 vacc3x0123 = _mm_add_epi32(vacc3x0123,
112 _mm_madd_epi16(_mm_shuffle_epi32(vxa3, _MM_SHUFFLE(0, 0, 0, 0)), vxb0));
113
114 vacc0x0123 = _mm_add_epi32(vacc0x0123,
115 _mm_madd_epi16(_mm_shuffle_epi32(vxa0, _MM_SHUFFLE(1, 1, 1, 1)), vxb1));
116 vacc1x0123 = _mm_add_epi32(vacc1x0123,
117 _mm_madd_epi16(_mm_shuffle_epi32(vxa1, _MM_SHUFFLE(1, 1, 1, 1)), vxb1));
118 vacc2x0123 = _mm_add_epi32(vacc2x0123,
119 _mm_madd_epi16(_mm_shuffle_epi32(vxa2, _MM_SHUFFLE(1, 1, 1, 1)), vxb1));
120 vacc3x0123 = _mm_add_epi32(vacc3x0123,
121 _mm_madd_epi16(_mm_shuffle_epi32(vxa3, _MM_SHUFFLE(1, 1, 1, 1)), vxb1));
122 const __m128i vb23 = _mm_loadu_si128((const __m128i*) ((uintptr_t) w + 16));
123 const __m128i vsb23 = _mm_cmpgt_epi8(_mm_setzero_si128(), vb23);
124 const __m128i vxb2 = _mm_unpacklo_epi8(vb23, vsb23);
125 const __m128i vxb3 = _mm_unpackhi_epi8(vb23, vsb23);
126
127 vacc0x0123 = _mm_add_epi32(vacc0x0123,
128 _mm_madd_epi16(_mm_shuffle_epi32(vxa0, _MM_SHUFFLE(2, 2, 2, 2)), vxb2));
129 vacc1x0123 = _mm_add_epi32(vacc1x0123,
130 _mm_madd_epi16(_mm_shuffle_epi32(vxa1, _MM_SHUFFLE(2, 2, 2, 2)), vxb2));
131 vacc2x0123 = _mm_add_epi32(vacc2x0123,
132 _mm_madd_epi16(_mm_shuffle_epi32(vxa2, _MM_SHUFFLE(2, 2, 2, 2)), vxb2));
133 vacc3x0123 = _mm_add_epi32(vacc3x0123,
134 _mm_madd_epi16(_mm_shuffle_epi32(vxa3, _MM_SHUFFLE(2, 2, 2, 2)), vxb2));
135
136 vacc0x0123 = _mm_add_epi32(vacc0x0123,
137 _mm_madd_epi16(_mm_shuffle_epi32(vxa0, _MM_SHUFFLE(3, 3, 3, 3)), vxb3));
138 vacc1x0123 = _mm_add_epi32(vacc1x0123,
139 _mm_madd_epi16(_mm_shuffle_epi32(vxa1, _MM_SHUFFLE(3, 3, 3, 3)), vxb3));
140 vacc2x0123 = _mm_add_epi32(vacc2x0123,
141 _mm_madd_epi16(_mm_shuffle_epi32(vxa2, _MM_SHUFFLE(3, 3, 3, 3)), vxb3));
142 vacc3x0123 = _mm_add_epi32(vacc3x0123,
143 _mm_madd_epi16(_mm_shuffle_epi32(vxa3, _MM_SHUFFLE(3, 3, 3, 3)), vxb3));
144
145 w = (const void*) ((uintptr_t) w + 32);
146 k -= 8 * sizeof(int8_t);
147 }
148 if (k != 0) {
149 const __m128i va0 = _mm_loadl_epi64((const __m128i*) a0);
150 const __m128i vxa0 = _mm_unpacklo_epi8(va0, _mm_cmpgt_epi8(_mm_setzero_si128(), va0));
151 a0 = (const int8_t*) ((uintptr_t) a0 + k);
152 const __m128i va1 = _mm_loadl_epi64((const __m128i*) a1);
153 const __m128i vxa1 = _mm_unpacklo_epi8(va1, _mm_cmpgt_epi8(_mm_setzero_si128(), va1));
154 a1 = (const int8_t*) ((uintptr_t) a1 + k);
155 const __m128i va2 = _mm_loadl_epi64((const __m128i*) a2);
156 const __m128i vxa2 = _mm_unpacklo_epi8(va2, _mm_cmpgt_epi8(_mm_setzero_si128(), va2));
157 a2 = (const int8_t*) ((uintptr_t) a2 + k);
158 const __m128i va3 = _mm_loadl_epi64((const __m128i*) a3);
159 const __m128i vxa3 = _mm_unpacklo_epi8(va3, _mm_cmpgt_epi8(_mm_setzero_si128(), va3));
160 a3 = (const int8_t*) ((uintptr_t) a3 + k);
161
162 const __m128i vb0 = _mm_loadl_epi64((const __m128i*) w);
163 w = (const void*) ((uintptr_t) w + 8);
164 const __m128i vxb0 = _mm_unpacklo_epi8(vb0, _mm_cmpgt_epi8(_mm_setzero_si128(), vb0));
165
166 vacc0x0123 = _mm_add_epi32(vacc0x0123,
167 _mm_madd_epi16(_mm_shuffle_epi32(vxa0, _MM_SHUFFLE(0, 0, 0, 0)), vxb0));
168 vacc1x0123 = _mm_add_epi32(vacc1x0123,
169 _mm_madd_epi16(_mm_shuffle_epi32(vxa1, _MM_SHUFFLE(0, 0, 0, 0)), vxb0));
170 vacc2x0123 = _mm_add_epi32(vacc2x0123,
171 _mm_madd_epi16(_mm_shuffle_epi32(vxa2, _MM_SHUFFLE(0, 0, 0, 0)), vxb0));
172 vacc3x0123 = _mm_add_epi32(vacc3x0123,
173 _mm_madd_epi16(_mm_shuffle_epi32(vxa3, _MM_SHUFFLE(0, 0, 0, 0)), vxb0));
174
175 if (k > 2 * sizeof(int8_t)) {
176 const __m128i vb1 = _mm_loadl_epi64((const __m128i*) w);
177 w = (const void*) ((uintptr_t) w + 8);
178 const __m128i vxb1 = _mm_unpacklo_epi8(vb1, _mm_cmpgt_epi8(_mm_setzero_si128(), vb1));
179
180 vacc0x0123 = _mm_add_epi32(vacc0x0123,
181 _mm_madd_epi16(_mm_shuffle_epi32(vxa0, _MM_SHUFFLE(1, 1, 1, 1)), vxb1));
182 vacc1x0123 = _mm_add_epi32(vacc1x0123,
183 _mm_madd_epi16(_mm_shuffle_epi32(vxa1, _MM_SHUFFLE(1, 1, 1, 1)), vxb1));
184 vacc2x0123 = _mm_add_epi32(vacc2x0123,
185 _mm_madd_epi16(_mm_shuffle_epi32(vxa2, _MM_SHUFFLE(1, 1, 1, 1)), vxb1));
186 vacc3x0123 = _mm_add_epi32(vacc3x0123,
187 _mm_madd_epi16(_mm_shuffle_epi32(vxa3, _MM_SHUFFLE(1, 1, 1, 1)), vxb1));
188
189 if (k > 4 * sizeof(int8_t)) {
190 const __m128i vb2 = _mm_loadl_epi64((const __m128i*) w);
191 w = (const void*) ((uintptr_t) w + 8);
192 const __m128i vxb2 = _mm_unpacklo_epi8(vb2, _mm_cmpgt_epi8(_mm_setzero_si128(), vb2));
193
194 vacc0x0123 = _mm_add_epi32(vacc0x0123,
195 _mm_madd_epi16(_mm_shuffle_epi32(vxa0, _MM_SHUFFLE(2, 2, 2, 2)), vxb2));
196 vacc1x0123 = _mm_add_epi32(vacc1x0123,
197 _mm_madd_epi16(_mm_shuffle_epi32(vxa1, _MM_SHUFFLE(2, 2, 2, 2)), vxb2));
198 vacc2x0123 = _mm_add_epi32(vacc2x0123,
199 _mm_madd_epi16(_mm_shuffle_epi32(vxa2, _MM_SHUFFLE(2, 2, 2, 2)), vxb2));
200 vacc3x0123 = _mm_add_epi32(vacc3x0123,
201 _mm_madd_epi16(_mm_shuffle_epi32(vxa3, _MM_SHUFFLE(2, 2, 2, 2)), vxb2));
202 }
203 }
204 }
205 p -= 4 * sizeof(void*);
206 } while (p != 0);
207
208 const __m128i vmultiplier = _mm_load_si128((const __m128i*) params->sse2.multiplier);
209 const __m128i vrounding = _mm_load_si128((const __m128i*) params->sse2.rounding);
210
211 const __m128i vnmask0x0123 = _mm_cmpgt_epi32(_mm_setzero_si128(), vacc0x0123);
212 const __m128i vnmask1x0123 = _mm_cmpgt_epi32(_mm_setzero_si128(), vacc1x0123);
213 const __m128i vnmask2x0123 = _mm_cmpgt_epi32(_mm_setzero_si128(), vacc2x0123);
214 const __m128i vnmask3x0123 = _mm_cmpgt_epi32(_mm_setzero_si128(), vacc3x0123);
215
216 const __m128i vabsacc0x0123 = _mm_abs_epi32(vacc0x0123);
217 const __m128i vabsacc1x0123 = _mm_abs_epi32(vacc1x0123);
218 const __m128i vabsacc2x0123 = _mm_abs_epi32(vacc2x0123);
219 const __m128i vabsacc3x0123 = _mm_abs_epi32(vacc3x0123);
220
221 const __m128i vabsacc0x1133 = _mm_shuffle_epi32(vabsacc0x0123, _MM_SHUFFLE(3, 3, 1, 1));
222 const __m128i vabsacc1x1133 = _mm_shuffle_epi32(vabsacc1x0123, _MM_SHUFFLE(3, 3, 1, 1));
223 const __m128i vabsacc2x1133 = _mm_shuffle_epi32(vabsacc2x0123, _MM_SHUFFLE(3, 3, 1, 1));
224 const __m128i vabsacc3x1133 = _mm_shuffle_epi32(vabsacc3x0123, _MM_SHUFFLE(3, 3, 1, 1));
225
226 const __m128i vabsprod0x02 = _mm_mul_epu32(vabsacc0x0123, vmultiplier);
227 const __m128i vabsprod1x02 = _mm_mul_epu32(vabsacc1x0123, vmultiplier);
228 const __m128i vabsprod2x02 = _mm_mul_epu32(vabsacc2x0123, vmultiplier);
229 const __m128i vabsprod3x02 = _mm_mul_epu32(vabsacc3x0123, vmultiplier);
230
231 const __m128i vnmask0x02 = _mm_shuffle_epi32(vnmask0x0123, _MM_SHUFFLE(2, 2, 0, 0));
232 const __m128i vnmask1x02 = _mm_shuffle_epi32(vnmask1x0123, _MM_SHUFFLE(2, 2, 0, 0));
233 const __m128i vnmask2x02 = _mm_shuffle_epi32(vnmask2x0123, _MM_SHUFFLE(2, 2, 0, 0));
234 const __m128i vnmask3x02 = _mm_shuffle_epi32(vnmask3x0123, _MM_SHUFFLE(2, 2, 0, 0));
235
236 const __m128i vprod0x02 = _mm_sub_epi64(_mm_xor_si128(vabsprod0x02, vnmask0x02), vnmask0x02);
237 const __m128i vprod1x02 = _mm_sub_epi64(_mm_xor_si128(vabsprod1x02, vnmask1x02), vnmask1x02);
238 const __m128i vprod2x02 = _mm_sub_epi64(_mm_xor_si128(vabsprod2x02, vnmask2x02), vnmask2x02);
239 const __m128i vprod3x02 = _mm_sub_epi64(_mm_xor_si128(vabsprod3x02, vnmask3x02), vnmask3x02);
240
241 const __m128i vq31prod0x02 = _mm_srli_epi64(_mm_add_epi64(vprod0x02, vrounding), 31);
242 const __m128i vq31prod1x02 = _mm_srli_epi64(_mm_add_epi64(vprod1x02, vrounding), 31);
243 const __m128i vq31prod2x02 = _mm_srli_epi64(_mm_add_epi64(vprod2x02, vrounding), 31);
244 const __m128i vq31prod3x02 = _mm_srli_epi64(_mm_add_epi64(vprod3x02, vrounding), 31);
245
246 const __m128i vabsprod0x13 = _mm_mul_epu32(vabsacc0x1133, vmultiplier);
247 const __m128i vabsprod1x13 = _mm_mul_epu32(vabsacc1x1133, vmultiplier);
248 const __m128i vabsprod2x13 = _mm_mul_epu32(vabsacc2x1133, vmultiplier);
249 const __m128i vabsprod3x13 = _mm_mul_epu32(vabsacc3x1133, vmultiplier);
250
251 const __m128i vnmask0x13 = _mm_shuffle_epi32(vnmask0x0123, _MM_SHUFFLE(3, 3, 1, 1));
252 const __m128i vnmask1x13 = _mm_shuffle_epi32(vnmask1x0123, _MM_SHUFFLE(3, 3, 1, 1));
253 const __m128i vnmask2x13 = _mm_shuffle_epi32(vnmask2x0123, _MM_SHUFFLE(3, 3, 1, 1));
254 const __m128i vnmask3x13 = _mm_shuffle_epi32(vnmask3x0123, _MM_SHUFFLE(3, 3, 1, 1));
255
256 const __m128i vprod0x13 = _mm_sub_epi64(_mm_xor_si128(vabsprod0x13, vnmask0x13), vnmask0x13);
257 const __m128i vprod1x13 = _mm_sub_epi64(_mm_xor_si128(vabsprod1x13, vnmask1x13), vnmask1x13);
258 const __m128i vprod2x13 = _mm_sub_epi64(_mm_xor_si128(vabsprod2x13, vnmask2x13), vnmask2x13);
259 const __m128i vprod3x13 = _mm_sub_epi64(_mm_xor_si128(vabsprod3x13, vnmask3x13), vnmask3x13);
260
261 const __m128i vq31prod0x13 = _mm_srli_epi64(_mm_add_epi64(vprod0x13, vrounding), 31);
262 const __m128i vq31prod1x13 = _mm_srli_epi64(_mm_add_epi64(vprod1x13, vrounding), 31);
263 const __m128i vq31prod2x13 = _mm_srli_epi64(_mm_add_epi64(vprod2x13, vrounding), 31);
264 const __m128i vq31prod3x13 = _mm_srli_epi64(_mm_add_epi64(vprod3x13, vrounding), 31);
265
266 const __m128i vq31prod0x0213 = _mm_castps_si128(_mm_shuffle_ps(
267 _mm_castsi128_ps(vq31prod0x02), _mm_castsi128_ps(vq31prod0x13), _MM_SHUFFLE(2, 0, 2, 0)));
268 const __m128i vq31prod1x0213 = _mm_castps_si128(_mm_shuffle_ps(
269 _mm_castsi128_ps(vq31prod1x02), _mm_castsi128_ps(vq31prod1x13), _MM_SHUFFLE(2, 0, 2, 0)));
270 const __m128i vq31prod2x0213 = _mm_castps_si128(_mm_shuffle_ps(
271 _mm_castsi128_ps(vq31prod2x02), _mm_castsi128_ps(vq31prod2x13), _MM_SHUFFLE(2, 0, 2, 0)));
272 const __m128i vq31prod3x0213 = _mm_castps_si128(_mm_shuffle_ps(
273 _mm_castsi128_ps(vq31prod3x02), _mm_castsi128_ps(vq31prod3x13), _MM_SHUFFLE(2, 0, 2, 0)));
274
275 const __m128i vq31prod0x0123 = _mm_shuffle_epi32(vq31prod0x0213, _MM_SHUFFLE(3, 1, 2, 0));
276 const __m128i vq31prod1x0123 = _mm_shuffle_epi32(vq31prod1x0213, _MM_SHUFFLE(3, 1, 2, 0));
277 const __m128i vq31prod2x0123 = _mm_shuffle_epi32(vq31prod2x0213, _MM_SHUFFLE(3, 1, 2, 0));
278 const __m128i vq31prod3x0123 = _mm_shuffle_epi32(vq31prod3x0213, _MM_SHUFFLE(3, 1, 2, 0));
279
280 const __m128i vremainder_mask = _mm_load_si128((const __m128i*) params->sse2.remainder_mask);
281 const __m128i vrem0x0123 =
282 _mm_add_epi32(_mm_and_si128(vq31prod0x0123, vremainder_mask), _mm_cmpgt_epi32(_mm_setzero_si128(), vq31prod0x0123));
283 const __m128i vrem1x0123 =
284 _mm_add_epi32(_mm_and_si128(vq31prod1x0123, vremainder_mask), _mm_cmpgt_epi32(_mm_setzero_si128(), vq31prod1x0123));
285 const __m128i vrem2x0123 =
286 _mm_add_epi32(_mm_and_si128(vq31prod2x0123, vremainder_mask), _mm_cmpgt_epi32(_mm_setzero_si128(), vq31prod2x0123));
287 const __m128i vrem3x0123 =
288 _mm_add_epi32(_mm_and_si128(vq31prod3x0123, vremainder_mask), _mm_cmpgt_epi32(_mm_setzero_si128(), vq31prod3x0123));
289
290 const __m128i vremainder_threshold = _mm_load_si128((const __m128i*) params->sse2.remainder_threshold);
291 const __m128i vshift = _mm_load_si128((const __m128i*) params->sse2.shift);
292 vacc0x0123 =
293 _mm_sub_epi32(_mm_sra_epi32(vq31prod0x0123, vshift), _mm_cmpgt_epi32(vrem0x0123, vremainder_threshold));
294 vacc1x0123 =
295 _mm_sub_epi32(_mm_sra_epi32(vq31prod1x0123, vshift), _mm_cmpgt_epi32(vrem1x0123, vremainder_threshold));
296 vacc2x0123 =
297 _mm_sub_epi32(_mm_sra_epi32(vq31prod2x0123, vshift), _mm_cmpgt_epi32(vrem2x0123, vremainder_threshold));
298 vacc3x0123 =
299 _mm_sub_epi32(_mm_sra_epi32(vq31prod3x0123, vshift), _mm_cmpgt_epi32(vrem3x0123, vremainder_threshold));
300
301 const __m128i voutput_zero_point = _mm_load_si128((const __m128i*) params->sse2.output_zero_point);
302 __m128i vacc01x0123 = _mm_adds_epi16(_mm_packs_epi32(vacc0x0123, vacc1x0123), voutput_zero_point);
303 __m128i vacc23x0123 = _mm_adds_epi16(_mm_packs_epi32(vacc2x0123, vacc3x0123), voutput_zero_point);
304
305 const __m128i voutput_min = _mm_load_si128((const __m128i*) params->sse2.output_min);
306 const __m128i voutput_max = _mm_load_si128((const __m128i*) params->sse2.output_max);
307 vacc01x0123 = _mm_min_epi16(_mm_max_epi16(vacc01x0123, voutput_min), voutput_max);
308 vacc23x0123 = _mm_min_epi16(_mm_max_epi16(vacc23x0123, voutput_min), voutput_max);
309
310 __m128i vout = _mm_packs_epi16(vacc01x0123, vacc23x0123);
311
312 if (nc >= 4) {
313 *((uint32_t*) c3) = (uint32_t) _mm_cvtsi128_si32(_mm_shuffle_epi32(vout, _MM_SHUFFLE(3, 3, 3, 3)));
314 c3 = (int8_t*) ((uintptr_t) c3 + cn_stride);
315 *((uint32_t*) c2) = (uint32_t) _mm_cvtsi128_si32(_mm_shuffle_epi32(vout, _MM_SHUFFLE(2, 2, 2, 2)));
316 c2 = (int8_t*) ((uintptr_t) c2 + cn_stride);
317 *((uint32_t*) c1) = (uint32_t) _mm_cvtsi128_si32(_mm_shuffle_epi32(vout, _MM_SHUFFLE(1, 1, 1, 1)));
318 c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
319 *((uint32_t*) c0) = (uint32_t) _mm_cvtsi128_si32(vout);
320 c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
321
322 a = (const int8_t**restrict) ((uintptr_t) a - ks);
323
324 nc -= 4;
325 } else {
326 if (nc & 2) {
327 *((uint16_t*) c3) = (uint16_t) _mm_extract_epi16(vout, 6);
328 c3 += 2;
329 *((uint16_t*) c2) = (uint16_t) _mm_extract_epi16(vout, 4);
330 c2 += 2;
331 *((uint16_t*) c1) = (uint16_t) _mm_extract_epi16(vout, 2);
332 c1 += 2;
333 *((uint16_t*) c0) = (uint16_t) _mm_extract_epi16(vout, 0);
334 c0 += 2;
335 vout = _mm_srli_epi32(vout, 16);
336 }
337 if (nc & 1) {
338 *((int8_t*) c3) = (int8_t) _mm_extract_epi16(vout, 6);
339 *((int8_t*) c2) = (int8_t) _mm_extract_epi16(vout, 4);
340 *((int8_t*) c1) = (int8_t) _mm_extract_epi16(vout, 2);
341 *((int8_t*) c0) = (int8_t) _mm_cvtsi128_si32(vout);
342 }
343
344 nc = 0;
345 }
346 } while (nc != 0);
347 }
348