1 // Auto-generated file. Do not edit!
2 // Template: src/qs8-gemm/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 <xnnpack/math.h>
13 #include <xnnpack/gemm.h>
14
15
xnn_qc8_gemm_minmax_fp32_ukernel_3x4__scalar_imagic(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_qc8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS (1)])16 void xnn_qc8_gemm_minmax_fp32_ukernel_3x4__scalar_imagic(
17 size_t mr,
18 size_t nc,
19 size_t kc,
20 const int8_t* restrict a,
21 size_t a_stride,
22 const void* restrict w,
23 int8_t* restrict c,
24 size_t cm_stride,
25 size_t cn_stride,
26 const union xnn_qc8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)])
27 {
28 assert(mr != 0);
29 assert(mr <= 3);
30 assert(nc != 0);
31 assert(kc != 0);
32
33 const int8_t* a0 = a;
34 int8_t* c0 = c;
35 const int8_t* a1 = (const int8_t*) ((uintptr_t) a0 + a_stride);
36 int8_t* c1 = (int8_t*) ((uintptr_t) c0 + cm_stride);
37 if XNN_UNPREDICTABLE(mr < 2) {
38 a1 = a0;
39 c1 = c0;
40 }
41 const int8_t* a2 = (const int8_t*) ((uintptr_t) a1 + a_stride);
42 int8_t* c2 = (int8_t*) ((uintptr_t) c1 + cm_stride);
43 if XNN_UNPREDICTABLE(mr <= 2) {
44 a2 = a1;
45 c2 = c1;
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 int32_t vacc2x0 = vacc0x0;
58 int32_t vacc2x1 = vacc0x1;
59 int32_t vacc2x2 = vacc0x2;
60 int32_t vacc2x3 = vacc0x3;
61 w = (const void*) ((const int32_t*) w + 4);
62
63 size_t k = kc;
64 do {
65 const int32_t va0 = (int32_t) *a0++;
66 const int32_t va1 = (int32_t) *a1++;
67 const int32_t va2 = (int32_t) *a2++;
68
69 const int32_t vb0 = (int32_t) ((const int8_t*) w)[0];
70 const int32_t vb1 = (int32_t) ((const int8_t*) w)[1];
71 const int32_t vb2 = (int32_t) ((const int8_t*) w)[2];
72 const int32_t vb3 = (int32_t) ((const int8_t*) w)[3];
73 w = (const void*) ((const int8_t*) w + 4);
74
75 vacc0x0 += va0 * vb0;
76 vacc0x1 += va0 * vb1;
77 vacc0x2 += va0 * vb2;
78 vacc0x3 += va0 * vb3;
79 vacc1x0 += va1 * vb0;
80 vacc1x1 += va1 * vb1;
81 vacc1x2 += va1 * vb2;
82 vacc1x3 += va1 * vb3;
83 vacc2x0 += va2 * vb0;
84 vacc2x1 += va2 * vb1;
85 vacc2x2 += va2 * vb2;
86 vacc2x3 += va2 * vb3;
87
88 k -= sizeof(int8_t);
89 } while (k != 0);
90
91 float vfpacc0x0 = (float) vacc0x0;
92 float vfpacc0x1 = (float) vacc0x1;
93 float vfpacc0x2 = (float) vacc0x2;
94 float vfpacc0x3 = (float) vacc0x3;
95 float vfpacc1x0 = (float) vacc1x0;
96 float vfpacc1x1 = (float) vacc1x1;
97 float vfpacc1x2 = (float) vacc1x2;
98 float vfpacc1x3 = (float) vacc1x3;
99 float vfpacc2x0 = (float) vacc2x0;
100 float vfpacc2x1 = (float) vacc2x1;
101 float vfpacc2x2 = (float) vacc2x2;
102 float vfpacc2x3 = (float) vacc2x3;
103
104 const float vscale0 = ((const float*) w)[0];
105 vfpacc0x0 *= vscale0;
106 vfpacc1x0 *= vscale0;
107 vfpacc2x0 *= vscale0;
108 const float vscale1 = ((const float*) w)[1];
109 vfpacc0x1 *= vscale1;
110 vfpacc1x1 *= vscale1;
111 vfpacc2x1 *= vscale1;
112 const float vscale2 = ((const float*) w)[2];
113 vfpacc0x2 *= vscale2;
114 vfpacc1x2 *= vscale2;
115 vfpacc2x2 *= vscale2;
116 const float vscale3 = ((const float*) w)[3];
117 vfpacc0x3 *= vscale3;
118 vfpacc1x3 *= vscale3;
119 vfpacc2x3 *= vscale3;
120 w = (const void*) ((const float*) w + 4);
121
122 const float vmagic_bias = params->fp32_scalar_imagic.magic_bias;
123 vfpacc0x0 += vmagic_bias;
124 vfpacc0x1 += vmagic_bias;
125 vfpacc0x2 += vmagic_bias;
126 vfpacc0x3 += vmagic_bias;
127 vfpacc1x0 += vmagic_bias;
128 vfpacc1x1 += vmagic_bias;
129 vfpacc1x2 += vmagic_bias;
130 vfpacc1x3 += vmagic_bias;
131 vfpacc2x0 += vmagic_bias;
132 vfpacc2x1 += vmagic_bias;
133 vfpacc2x2 += vmagic_bias;
134 vfpacc2x3 += vmagic_bias;
135
136 int32_t vout0x0 = (int32_t) float_as_uint32(vfpacc0x0);
137 int32_t vout0x1 = (int32_t) float_as_uint32(vfpacc0x1);
138 int32_t vout0x2 = (int32_t) float_as_uint32(vfpacc0x2);
139 int32_t vout0x3 = (int32_t) float_as_uint32(vfpacc0x3);
140 int32_t vout1x0 = (int32_t) float_as_uint32(vfpacc1x0);
141 int32_t vout1x1 = (int32_t) float_as_uint32(vfpacc1x1);
142 int32_t vout1x2 = (int32_t) float_as_uint32(vfpacc1x2);
143 int32_t vout1x3 = (int32_t) float_as_uint32(vfpacc1x3);
144 int32_t vout2x0 = (int32_t) float_as_uint32(vfpacc2x0);
145 int32_t vout2x1 = (int32_t) float_as_uint32(vfpacc2x1);
146 int32_t vout2x2 = (int32_t) float_as_uint32(vfpacc2x2);
147 int32_t vout2x3 = (int32_t) float_as_uint32(vfpacc2x3);
148
149 const int32_t vmagic_min = params->fp32_scalar_imagic.magic_min;
150 vout0x0 = math_max_s32(vout0x0, vmagic_min);
151 vout0x1 = math_max_s32(vout0x1, vmagic_min);
152 vout0x2 = math_max_s32(vout0x2, vmagic_min);
153 vout0x3 = math_max_s32(vout0x3, vmagic_min);
154 vout1x0 = math_max_s32(vout1x0, vmagic_min);
155 vout1x1 = math_max_s32(vout1x1, vmagic_min);
156 vout1x2 = math_max_s32(vout1x2, vmagic_min);
157 vout1x3 = math_max_s32(vout1x3, vmagic_min);
158 vout2x0 = math_max_s32(vout2x0, vmagic_min);
159 vout2x1 = math_max_s32(vout2x1, vmagic_min);
160 vout2x2 = math_max_s32(vout2x2, vmagic_min);
161 vout2x3 = math_max_s32(vout2x3, vmagic_min);
162
163 const int32_t vmagic_max = params->fp32_scalar_imagic.magic_max;
164 vout0x0 = math_min_s32(vout0x0, vmagic_max);
165 vout0x1 = math_min_s32(vout0x1, vmagic_max);
166 vout0x2 = math_min_s32(vout0x2, vmagic_max);
167 vout0x3 = math_min_s32(vout0x3, vmagic_max);
168 vout1x0 = math_min_s32(vout1x0, vmagic_max);
169 vout1x1 = math_min_s32(vout1x1, vmagic_max);
170 vout1x2 = math_min_s32(vout1x2, vmagic_max);
171 vout1x3 = math_min_s32(vout1x3, vmagic_max);
172 vout2x0 = math_min_s32(vout2x0, vmagic_max);
173 vout2x1 = math_min_s32(vout2x1, vmagic_max);
174 vout2x2 = math_min_s32(vout2x2, vmagic_max);
175 vout2x3 = math_min_s32(vout2x3, vmagic_max);
176
177 const int32_t vmagic_bias_less_zero_point = params->fp32_scalar_imagic.magic_bias_less_zero_point;
178 vout0x0 -= vmagic_bias_less_zero_point;
179 vout0x1 -= vmagic_bias_less_zero_point;
180 vout0x2 -= vmagic_bias_less_zero_point;
181 vout0x3 -= vmagic_bias_less_zero_point;
182 vout1x0 -= vmagic_bias_less_zero_point;
183 vout1x1 -= vmagic_bias_less_zero_point;
184 vout1x2 -= vmagic_bias_less_zero_point;
185 vout1x3 -= vmagic_bias_less_zero_point;
186 vout2x0 -= vmagic_bias_less_zero_point;
187 vout2x1 -= vmagic_bias_less_zero_point;
188 vout2x2 -= vmagic_bias_less_zero_point;
189 vout2x3 -= vmagic_bias_less_zero_point;
190
191 if XNN_LIKELY(nc >= 4) {
192 c0[0] = (int8_t) vout0x0;
193 c0[1] = (int8_t) vout0x1;
194 c0[2] = (int8_t) vout0x2;
195 c0[3] = (int8_t) vout0x3;
196 c1[0] = (int8_t) vout1x0;
197 c1[1] = (int8_t) vout1x1;
198 c1[2] = (int8_t) vout1x2;
199 c1[3] = (int8_t) vout1x3;
200 c2[0] = (int8_t) vout2x0;
201 c2[1] = (int8_t) vout2x1;
202 c2[2] = (int8_t) vout2x2;
203 c2[3] = (int8_t) vout2x3;
204
205 a0 = (const int8_t*) ((uintptr_t) a0 - kc);
206 a1 = (const int8_t*) ((uintptr_t) a1 - kc);
207 a2 = (const int8_t*) ((uintptr_t) a2 - kc);
208
209 c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
210 c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
211 c2 = (int8_t*) ((uintptr_t) c2 + cn_stride);
212
213 nc -= 4;
214 } else {
215 if (nc & 2) {
216 c0[0] = (int8_t) vout0x0;
217 c0[1] = (int8_t) vout0x1;
218 vout0x0 = vout0x2;
219 c0 += 2;
220 c1[0] = (int8_t) vout1x0;
221 c1[1] = (int8_t) vout1x1;
222 vout1x0 = vout1x2;
223 c1 += 2;
224 c2[0] = (int8_t) vout2x0;
225 c2[1] = (int8_t) vout2x1;
226 vout2x0 = vout2x2;
227 c2 += 2;
228 }
229 if (nc & 1) {
230 c0[0] = (int8_t) vout0x0;
231 c1[0] = (int8_t) vout1x0;
232 c2[0] = (int8_t) vout2x0;
233 }
234
235 nc = 0;
236 }
237 } while (nc != 0);
238 }
239