1 // Auto-generated file. Do not edit!
2 // Template: src/qs8-igemm/scalar.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 <fp16.h>
13
14 #include <xnnpack/math.h>
15 #include <xnnpack/gemm.h>
16
17
xnn_qc8_igemm_minmax_fp32_ukernel_2x4__scalar_imagic(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_minmax_params params[restrict XNN_MIN_ELEMENTS (1)])18 void xnn_qc8_igemm_minmax_fp32_ukernel_2x4__scalar_imagic(
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_minmax_params params[restrict XNN_MIN_ELEMENTS(1)])
31 {
32 assert(mr != 0);
33 assert(mr <= 2);
34 assert(nc != 0);
35 assert(kc != 0);
36 assert(ks != 0);
37 assert(ks % (2 * sizeof(void*)) == 0);
38 assert(a != NULL);
39 assert(w != NULL);
40 assert(c != NULL);
41
42 int8_t* c0 = c;
43 int8_t* c1 = (int8_t*) ((uintptr_t) c0 + cm_stride);
44 if XNN_UNPREDICTABLE(mr != 2) {
45 c1 = c0;
46 }
47
48 do {
49 int32_t vacc0x0 = ((const int32_t*) w)[0];
50 int32_t vacc0x1 = ((const int32_t*) w)[1];
51 int32_t vacc0x2 = ((const int32_t*) w)[2];
52 int32_t vacc0x3 = ((const int32_t*) w)[3];
53 int32_t vacc1x0 = vacc0x0;
54 int32_t vacc1x1 = vacc0x1;
55 int32_t vacc1x2 = vacc0x2;
56 int32_t vacc1x3 = vacc0x3;
57 w = (const void*) ((const int32_t*) w + 4);
58
59 size_t p = ks;
60 do {
61 const int8_t* restrict a0 = a[0];
62 assert(a0 != NULL);
63 if XNN_UNPREDICTABLE(a0 != zero) {
64 a0 = (const int8_t*) ((uintptr_t) a0 + a_offset);
65 }
66 const int8_t* restrict a1 = a[1];
67 assert(a1 != NULL);
68 if XNN_UNPREDICTABLE(a1 != zero) {
69 a1 = (const int8_t*) ((uintptr_t) a1 + a_offset);
70 }
71 a += 2;
72
73 size_t k = kc;
74 do {
75 const int32_t va0 = (int32_t) *a0++;
76 const int32_t va1 = (int32_t) *a1++;
77
78 const int32_t vb0 = (int32_t) ((const int8_t*) w)[0];
79 const int32_t vb1 = (int32_t) ((const int8_t*) w)[1];
80 const int32_t vb2 = (int32_t) ((const int8_t*) w)[2];
81 const int32_t vb3 = (int32_t) ((const int8_t*) w)[3];
82 w = (const void*) ((const int8_t*) w + 4);
83
84 vacc0x0 += va0 * vb0;
85 vacc0x1 += va0 * vb1;
86 vacc0x2 += va0 * vb2;
87 vacc0x3 += va0 * vb3;
88 vacc1x0 += va1 * vb0;
89 vacc1x1 += va1 * vb1;
90 vacc1x2 += va1 * vb2;
91 vacc1x3 += va1 * vb3;
92
93 k -= sizeof(int8_t);
94 } while (k != 0);
95 p -= 2 * sizeof(void*);
96 } while (p != 0);
97
98 float vfpacc0x0 = (float) vacc0x0;
99 float vfpacc0x1 = (float) vacc0x1;
100 float vfpacc0x2 = (float) vacc0x2;
101 float vfpacc0x3 = (float) vacc0x3;
102 float vfpacc1x0 = (float) vacc1x0;
103 float vfpacc1x1 = (float) vacc1x1;
104 float vfpacc1x2 = (float) vacc1x2;
105 float vfpacc1x3 = (float) vacc1x3;
106
107 const float vscale0 = ((const float*) w)[0];
108 vfpacc0x0 *= vscale0;
109 vfpacc1x0 *= vscale0;
110 const float vscale1 = ((const float*) w)[1];
111 vfpacc0x1 *= vscale1;
112 vfpacc1x1 *= vscale1;
113 const float vscale2 = ((const float*) w)[2];
114 vfpacc0x2 *= vscale2;
115 vfpacc1x2 *= vscale2;
116 const float vscale3 = ((const float*) w)[3];
117 vfpacc0x3 *= vscale3;
118 vfpacc1x3 *= vscale3;
119 w = (const void*) ((const float*) w + 4);
120
121 const float vmagic_bias = params->scalar_imagic.magic_bias;
122 vfpacc0x0 += vmagic_bias;
123 vfpacc0x1 += vmagic_bias;
124 vfpacc0x2 += vmagic_bias;
125 vfpacc0x3 += vmagic_bias;
126 vfpacc1x0 += vmagic_bias;
127 vfpacc1x1 += vmagic_bias;
128 vfpacc1x2 += vmagic_bias;
129 vfpacc1x3 += vmagic_bias;
130
131 int32_t vout0x0 = (int32_t) fp32_to_bits(vfpacc0x0);
132 int32_t vout0x1 = (int32_t) fp32_to_bits(vfpacc0x1);
133 int32_t vout0x2 = (int32_t) fp32_to_bits(vfpacc0x2);
134 int32_t vout0x3 = (int32_t) fp32_to_bits(vfpacc0x3);
135 int32_t vout1x0 = (int32_t) fp32_to_bits(vfpacc1x0);
136 int32_t vout1x1 = (int32_t) fp32_to_bits(vfpacc1x1);
137 int32_t vout1x2 = (int32_t) fp32_to_bits(vfpacc1x2);
138 int32_t vout1x3 = (int32_t) fp32_to_bits(vfpacc1x3);
139
140 const int32_t vmagic_min = params->scalar_imagic.magic_min;
141 vout0x0 = math_max_s32(vout0x0, vmagic_min);
142 vout0x1 = math_max_s32(vout0x1, vmagic_min);
143 vout0x2 = math_max_s32(vout0x2, vmagic_min);
144 vout0x3 = math_max_s32(vout0x3, vmagic_min);
145 vout1x0 = math_max_s32(vout1x0, vmagic_min);
146 vout1x1 = math_max_s32(vout1x1, vmagic_min);
147 vout1x2 = math_max_s32(vout1x2, vmagic_min);
148 vout1x3 = math_max_s32(vout1x3, vmagic_min);
149
150 const int32_t vmagic_max = params->scalar_imagic.magic_max;
151 vout0x0 = math_min_s32(vout0x0, vmagic_max);
152 vout0x1 = math_min_s32(vout0x1, vmagic_max);
153 vout0x2 = math_min_s32(vout0x2, vmagic_max);
154 vout0x3 = math_min_s32(vout0x3, vmagic_max);
155 vout1x0 = math_min_s32(vout1x0, vmagic_max);
156 vout1x1 = math_min_s32(vout1x1, vmagic_max);
157 vout1x2 = math_min_s32(vout1x2, vmagic_max);
158 vout1x3 = math_min_s32(vout1x3, vmagic_max);
159
160 const int32_t vmagic_bias_less_zero_point = params->scalar_imagic.magic_bias_less_zero_point;
161 vout0x0 -= vmagic_bias_less_zero_point;
162 vout0x1 -= vmagic_bias_less_zero_point;
163 vout0x2 -= vmagic_bias_less_zero_point;
164 vout0x3 -= vmagic_bias_less_zero_point;
165 vout1x0 -= vmagic_bias_less_zero_point;
166 vout1x1 -= vmagic_bias_less_zero_point;
167 vout1x2 -= vmagic_bias_less_zero_point;
168 vout1x3 -= vmagic_bias_less_zero_point;
169
170 if XNN_LIKELY(nc >= 4) {
171 c1[0] = (int8_t) vout1x0;
172 c1[1] = (int8_t) vout1x1;
173 c1[2] = (int8_t) vout1x2;
174 c1[3] = (int8_t) vout1x3;
175 c0[0] = (int8_t) vout0x0;
176 c0[1] = (int8_t) vout0x1;
177 c0[2] = (int8_t) vout0x2;
178 c0[3] = (int8_t) vout0x3;
179
180 c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
181 c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
182
183 a = (const int8_t**restrict) ((uintptr_t) a - ks);
184 nc -= 4;
185 } else {
186 if (nc & 2) {
187 c1[0] = (int8_t) vout1x0;
188 c1[1] = (int8_t) vout1x1;
189 vout1x0 = vout1x2;
190 c1 += 2;
191 c0[0] = (int8_t) vout0x0;
192 c0[1] = (int8_t) vout0x1;
193 vout0x0 = vout0x2;
194 c0 += 2;
195 }
196 if (nc & 1) {
197 c1[0] = (int8_t) vout1x0;
198 c0[0] = (int8_t) vout0x0;
199 }
200
201 nc = 0;
202 }
203 } while (nc != 0);
204 }
205