1 // Auto-generated file. Do not edit!
2 //   Template: src/qs8-gemm/MRx4c8-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 <emmintrin.h>
13 
14 #include <xnnpack/gemm.h>
15 #include <xnnpack/math.h>
16 
17 
xnn_qs8_gemm_minmax_ukernel_2x4c8__sse2_ld128(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_gemm_params params[restrict XNN_MIN_ELEMENTS (1)])18 void xnn_qs8_gemm_minmax_ukernel_2x4c8__sse2_ld128(
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_gemm_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN
29 {
30   assert(mr != 0);
31   assert(mr <= 2);
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   kc = round_up_po2(kc, 8);
40   const int8_t* a0 = a;
41   int8_t* c0 = c;
42   const int8_t* a1 = (const int8_t*) ((uintptr_t) a0 + a_stride);
43   int8_t* c1 = (int8_t*) ((uintptr_t) c0 + cm_stride);
44   if XNN_UNPREDICTABLE(mr != 2) {
45     a1 = a0;
46     c1 = c0;
47   }
48 
49   do {
50     __m128i vacc0x0 = _mm_cvtsi32_si128((int) ((const int32_t*) w)[0]);
51     __m128i vacc0x1 = _mm_cvtsi32_si128((int) ((const int32_t*) w)[1]);
52     __m128i vacc0x2 = _mm_cvtsi32_si128((int) ((const int32_t*) w)[2]);
53     __m128i vacc0x3 = _mm_cvtsi32_si128((int) ((const int32_t*) w)[3]);
54     __m128i vacc1x0 = vacc0x0;
55     __m128i vacc1x1 = vacc0x1;
56     __m128i vacc1x2 = vacc0x2;
57     __m128i vacc1x3 = vacc0x3;
58     w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
59 
60     size_t k = 0;
61     while (k < kc) {
62       const __m128i va0 = _mm_loadl_epi64((const __m128i*) a0);
63       const __m128i vxa0 = _mm_unpacklo_epi8(va0, _mm_cmpgt_epi8(_mm_setzero_si128(), va0));
64       a0 += 8;
65       const __m128i va1 = _mm_loadl_epi64((const __m128i*) a1);
66       const __m128i vxa1 = _mm_unpacklo_epi8(va1, _mm_cmpgt_epi8(_mm_setzero_si128(), va1));
67       a1 += 8;
68 
69       const __m128i vb01 = _mm_load_si128((const __m128i*) w);
70       const __m128i vsb01 = _mm_cmpgt_epi8(_mm_setzero_si128(), vb01);
71       const __m128i vxb0 = _mm_unpacklo_epi8(vb01, vsb01);
72       const __m128i vxb1 = _mm_unpackhi_epi8(vb01, vsb01);
73 
74       vacc0x0 = _mm_add_epi32(vacc0x0, _mm_madd_epi16(vxa0, vxb0));
75       vacc0x1 = _mm_add_epi32(vacc0x1, _mm_madd_epi16(vxa0, vxb1));
76       vacc1x0 = _mm_add_epi32(vacc1x0, _mm_madd_epi16(vxa1, vxb0));
77       vacc1x1 = _mm_add_epi32(vacc1x1, _mm_madd_epi16(vxa1, vxb1));
78       const __m128i vb23 = _mm_load_si128((const __m128i*) ((uintptr_t) w + 16 * sizeof(int8_t)));
79       const __m128i vsb23 = _mm_cmpgt_epi8(_mm_setzero_si128(), vb23);
80       const __m128i vxb2 = _mm_unpacklo_epi8(vb23, vsb23);
81       const __m128i vxb3 = _mm_unpackhi_epi8(vb23, vsb23);
82 
83       vacc0x2 = _mm_add_epi32(vacc0x2, _mm_madd_epi16(vxa0, vxb2));
84       vacc0x3 = _mm_add_epi32(vacc0x3, _mm_madd_epi16(vxa0, vxb3));
85       vacc1x2 = _mm_add_epi32(vacc1x2, _mm_madd_epi16(vxa1, vxb2));
86       vacc1x3 = _mm_add_epi32(vacc1x3, _mm_madd_epi16(vxa1, vxb3));
87 
88       w = (const void*) ((uintptr_t) w + 32 * sizeof(int8_t));
89       k += 8 * sizeof(int8_t);
90     }
91 
92     const __m128i vacc0x02 = _mm_add_epi32(_mm_unpacklo_epi32(vacc0x0, vacc0x2), _mm_unpackhi_epi32(vacc0x0, vacc0x2));
93     const __m128i vacc0x13 = _mm_add_epi32(_mm_unpacklo_epi32(vacc0x1, vacc0x3), _mm_unpackhi_epi32(vacc0x1, vacc0x3));
94     const __m128i vacc1x02 = _mm_add_epi32(_mm_unpacklo_epi32(vacc1x0, vacc1x2), _mm_unpackhi_epi32(vacc1x0, vacc1x2));
95     const __m128i vacc1x13 = _mm_add_epi32(_mm_unpacklo_epi32(vacc1x1, vacc1x3), _mm_unpackhi_epi32(vacc1x1, vacc1x3));
96 
97     __m128i vacc0x0123 = _mm_add_epi32(_mm_unpacklo_epi32(vacc0x02, vacc0x13), _mm_unpackhi_epi32(vacc0x02, vacc0x13));
98     __m128i vacc1x0123 = _mm_add_epi32(_mm_unpacklo_epi32(vacc1x02, vacc1x13), _mm_unpackhi_epi32(vacc1x02, vacc1x13));
99 
100     const __m128i vmultiplier = _mm_load_si128((const __m128i*) params->sse2.multiplier);
101     const __m128i vrounding = _mm_load_si128((const __m128i*) params->sse2.rounding);
102 
103     const __m128i vnmask0x0123 = _mm_cmpgt_epi32(_mm_setzero_si128(), vacc0x0123);
104     const __m128i vnmask1x0123 = _mm_cmpgt_epi32(_mm_setzero_si128(), vacc1x0123);
105 
106     const __m128i vabsacc0x0123 = _mm_sub_epi32(_mm_xor_si128(vacc0x0123, vnmask0x0123), vnmask0x0123);
107     const __m128i vabsacc1x0123 = _mm_sub_epi32(_mm_xor_si128(vacc1x0123, vnmask1x0123), vnmask1x0123);
108 
109     const __m128i vabsacc0x1133 = _mm_shuffle_epi32(vabsacc0x0123, _MM_SHUFFLE(3, 3, 1, 1));
110     const __m128i vabsacc1x1133 = _mm_shuffle_epi32(vabsacc1x0123, _MM_SHUFFLE(3, 3, 1, 1));
111 
112     const __m128i vabsprod0x02 = _mm_mul_epu32(vabsacc0x0123, vmultiplier);
113     const __m128i vabsprod1x02 = _mm_mul_epu32(vabsacc1x0123, vmultiplier);
114 
115     const __m128i vnmask0x02 = _mm_shuffle_epi32(vnmask0x0123, _MM_SHUFFLE(2, 2, 0, 0));
116     const __m128i vnmask1x02 = _mm_shuffle_epi32(vnmask1x0123, _MM_SHUFFLE(2, 2, 0, 0));
117 
118     const __m128i vprod0x02 = _mm_sub_epi64(_mm_xor_si128(vabsprod0x02, vnmask0x02), vnmask0x02);
119     const __m128i vprod1x02 = _mm_sub_epi64(_mm_xor_si128(vabsprod1x02, vnmask1x02), vnmask1x02);
120 
121     const __m128i vq31prod0x02 = _mm_srli_epi64(_mm_add_epi64(vprod0x02, vrounding), 31);
122     const __m128i vq31prod1x02 = _mm_srli_epi64(_mm_add_epi64(vprod1x02, vrounding), 31);
123 
124     const __m128i vabsprod0x13 = _mm_mul_epu32(vabsacc0x1133, vmultiplier);
125     const __m128i vabsprod1x13 = _mm_mul_epu32(vabsacc1x1133, vmultiplier);
126 
127     const __m128i vnmask0x13 = _mm_shuffle_epi32(vnmask0x0123, _MM_SHUFFLE(3, 3, 1, 1));
128     const __m128i vnmask1x13 = _mm_shuffle_epi32(vnmask1x0123, _MM_SHUFFLE(3, 3, 1, 1));
129 
130     const __m128i vprod0x13 = _mm_sub_epi64(_mm_xor_si128(vabsprod0x13, vnmask0x13), vnmask0x13);
131     const __m128i vprod1x13 = _mm_sub_epi64(_mm_xor_si128(vabsprod1x13, vnmask1x13), vnmask1x13);
132 
133     const __m128i vq31prod0x13 = _mm_srli_epi64(_mm_add_epi64(vprod0x13, vrounding), 31);
134     const __m128i vq31prod1x13 = _mm_srli_epi64(_mm_add_epi64(vprod1x13, vrounding), 31);
135 
136     const __m128i vq31prod0x0213 = _mm_castps_si128(_mm_shuffle_ps(
137         _mm_castsi128_ps(vq31prod0x02), _mm_castsi128_ps(vq31prod0x13), _MM_SHUFFLE(2, 0, 2, 0)));
138     const __m128i vq31prod1x0213 = _mm_castps_si128(_mm_shuffle_ps(
139         _mm_castsi128_ps(vq31prod1x02), _mm_castsi128_ps(vq31prod1x13), _MM_SHUFFLE(2, 0, 2, 0)));
140 
141     const __m128i vq31prod0x0123 = _mm_shuffle_epi32(vq31prod0x0213, _MM_SHUFFLE(3, 1, 2, 0));
142     const __m128i vq31prod1x0123 = _mm_shuffle_epi32(vq31prod1x0213, _MM_SHUFFLE(3, 1, 2, 0));
143 
144     const __m128i vremainder_mask = _mm_load_si128((const __m128i*) params->sse2.remainder_mask);
145     const __m128i vrem0x0123 =
146       _mm_add_epi32(_mm_and_si128(vq31prod0x0123, vremainder_mask), _mm_cmpgt_epi32(_mm_setzero_si128(), vq31prod0x0123));
147     const __m128i vrem1x0123 =
148       _mm_add_epi32(_mm_and_si128(vq31prod1x0123, vremainder_mask), _mm_cmpgt_epi32(_mm_setzero_si128(), vq31prod1x0123));
149 
150     const __m128i vremainder_threshold = _mm_load_si128((const __m128i*) params->sse2.remainder_threshold);
151     const __m128i vshift = _mm_load_si128((const __m128i*) params->sse2.shift);
152     vacc0x0123 =
153       _mm_sub_epi32(_mm_sra_epi32(vq31prod0x0123, vshift), _mm_cmpgt_epi32(vrem0x0123, vremainder_threshold));
154     vacc1x0123 =
155       _mm_sub_epi32(_mm_sra_epi32(vq31prod1x0123, vshift), _mm_cmpgt_epi32(vrem1x0123, vremainder_threshold));
156 
157     const __m128i voutput_zero_point = _mm_load_si128((const __m128i*) params->sse2.output_zero_point);
158     __m128i vacc01x0123 = _mm_adds_epi16(_mm_packs_epi32(vacc0x0123, vacc1x0123), voutput_zero_point);
159 
160     const __m128i voutput_min = _mm_load_si128((const __m128i*) params->sse2.output_min);
161     const __m128i voutput_max = _mm_load_si128((const __m128i*) params->sse2.output_max);
162     vacc01x0123 = _mm_min_epi16(_mm_max_epi16(vacc01x0123, voutput_min), voutput_max);
163 
164     __m128i vout = _mm_packs_epi16(vacc01x0123, vacc01x0123);
165 
166     if (nc >= 4) {
167       *((uint32_t*) c0) = (uint32_t) _mm_cvtsi128_si32(vout);
168       vout = _mm_srli_si128(vout, 4);
169       *((uint32_t*) c1) = (uint32_t) _mm_cvtsi128_si32(vout);
170 
171       c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
172       c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
173 
174       a0 = (const int8_t*) ((uintptr_t) a0 - kc);
175       a1 = (const int8_t*) ((uintptr_t) a1 - kc);
176 
177       nc -= 4;
178     } else {
179       if (nc & 2) {
180         *((uint16_t*) c0) = (uint16_t) _mm_extract_epi16(vout, 0);
181         c0 += 2;
182         *((uint16_t*) c1) = (uint16_t) _mm_extract_epi16(vout, 2);
183         c1 += 2;
184         vout = _mm_srli_epi32(vout, 16);
185       }
186       if (nc & 1) {
187         *((int8_t*) c0) = (int8_t) _mm_cvtsi128_si32(vout);
188         *((int8_t*) c1) = (int8_t) _mm_extract_epi16(vout, 2);
189       }
190 
191       nc = 0;
192     }
193   } while (nc != 0);
194 }
195