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_qu8_igemm_minmax_fp32_ukernel_2x4__scalar_imagic(size_t mr,size_t nc,size_t kc,size_t ks,const uint8_t ** restrict a,const void * restrict w,uint8_t * restrict c,size_t cm_stride,size_t cn_stride,size_t a_offset,const uint8_t * zero,const union xnn_qu8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS (1)])18 void xnn_qu8_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 uint8_t**restrict a,
24 const void*restrict w,
25 uint8_t*restrict c,
26 size_t cm_stride,
27 size_t cn_stride,
28 size_t a_offset,
29 const uint8_t* zero,
30 const union xnn_qu8_conv_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 uint8_t* c0 = c;
43 uint8_t* c1 = (uint8_t*) ((uintptr_t) c0 + cm_stride);
44 if XNN_UNPREDICTABLE(mr != 2) {
45 c1 = c0;
46 }
47
48 const int32_t vb_zero_point = params->fp32_scalar_imagic.kernel_zero_point;
49 do {
50 int32_t vacc0x0 = ((const int32_t*) w)[0];
51 int32_t vacc0x1 = ((const int32_t*) w)[1];
52 int32_t vacc0x2 = ((const int32_t*) w)[2];
53 int32_t vacc0x3 = ((const int32_t*) w)[3];
54 int32_t vacc1x0 = vacc0x0;
55 int32_t vacc1x1 = vacc0x1;
56 int32_t vacc1x2 = vacc0x2;
57 int32_t vacc1x3 = vacc0x3;
58 w = (const void*) ((const int32_t*) w + 4);
59
60 size_t p = ks;
61 do {
62 const uint8_t* restrict a0 = a[0];
63 assert(a0 != NULL);
64 if XNN_UNPREDICTABLE(a0 != zero) {
65 a0 = (const uint8_t*) ((uintptr_t) a0 + a_offset);
66 }
67 const uint8_t* restrict a1 = a[1];
68 assert(a1 != NULL);
69 if XNN_UNPREDICTABLE(a1 != zero) {
70 a1 = (const uint8_t*) ((uintptr_t) a1 + a_offset);
71 }
72 a += 2;
73
74 size_t k = kc;
75 do {
76 const int32_t va0 = (int32_t) (uint32_t) *a0++;
77 const int32_t va1 = (int32_t) (uint32_t) *a1++;
78
79 const int32_t vb0 = (int32_t) (uint32_t) ((const uint8_t*) w)[0] - vb_zero_point;
80 const int32_t vb1 = (int32_t) (uint32_t) ((const uint8_t*) w)[1] - vb_zero_point;
81 const int32_t vb2 = (int32_t) (uint32_t) ((const uint8_t*) w)[2] - vb_zero_point;
82 const int32_t vb3 = (int32_t) (uint32_t) ((const uint8_t*) w)[3] - vb_zero_point;
83 w = (const void*) ((const uint8_t*) w + 4);
84
85 vacc0x0 += va0 * vb0;
86 vacc0x1 += va0 * vb1;
87 vacc0x2 += va0 * vb2;
88 vacc0x3 += va0 * vb3;
89 vacc1x0 += va1 * vb0;
90 vacc1x1 += va1 * vb1;
91 vacc1x2 += va1 * vb2;
92 vacc1x3 += va1 * vb3;
93
94 k -= sizeof(uint8_t);
95 } while (k != 0);
96 p -= 2 * sizeof(void*);
97 } while (p != 0);
98
99 float vfpacc0x0 = (float) vacc0x0;
100 float vfpacc0x1 = (float) vacc0x1;
101 float vfpacc0x2 = (float) vacc0x2;
102 float vfpacc0x3 = (float) vacc0x3;
103 float vfpacc1x0 = (float) vacc1x0;
104 float vfpacc1x1 = (float) vacc1x1;
105 float vfpacc1x2 = (float) vacc1x2;
106 float vfpacc1x3 = (float) vacc1x3;
107
108 const float vscale = params->fp32_scalar_imagic.scale;
109 vfpacc0x0 *= vscale;
110 vfpacc0x1 *= vscale;
111 vfpacc0x2 *= vscale;
112 vfpacc0x3 *= vscale;
113 vfpacc1x0 *= vscale;
114 vfpacc1x1 *= vscale;
115 vfpacc1x2 *= vscale;
116 vfpacc1x3 *= vscale;
117
118 const float vmagic_bias = params->fp32_scalar_imagic.magic_bias;
119 vfpacc0x0 += vmagic_bias;
120 vfpacc0x1 += vmagic_bias;
121 vfpacc0x2 += vmagic_bias;
122 vfpacc0x3 += vmagic_bias;
123 vfpacc1x0 += vmagic_bias;
124 vfpacc1x1 += vmagic_bias;
125 vfpacc1x2 += vmagic_bias;
126 vfpacc1x3 += vmagic_bias;
127
128 int32_t vout0x0 = (int32_t) fp32_to_bits(vfpacc0x0);
129 int32_t vout0x1 = (int32_t) fp32_to_bits(vfpacc0x1);
130 int32_t vout0x2 = (int32_t) fp32_to_bits(vfpacc0x2);
131 int32_t vout0x3 = (int32_t) fp32_to_bits(vfpacc0x3);
132 int32_t vout1x0 = (int32_t) fp32_to_bits(vfpacc1x0);
133 int32_t vout1x1 = (int32_t) fp32_to_bits(vfpacc1x1);
134 int32_t vout1x2 = (int32_t) fp32_to_bits(vfpacc1x2);
135 int32_t vout1x3 = (int32_t) fp32_to_bits(vfpacc1x3);
136
137 const int32_t vmagic_min = params->fp32_scalar_imagic.magic_min;
138 vout0x0 = math_max_s32(vout0x0, vmagic_min);
139 vout0x1 = math_max_s32(vout0x1, vmagic_min);
140 vout0x2 = math_max_s32(vout0x2, vmagic_min);
141 vout0x3 = math_max_s32(vout0x3, vmagic_min);
142 vout1x0 = math_max_s32(vout1x0, vmagic_min);
143 vout1x1 = math_max_s32(vout1x1, vmagic_min);
144 vout1x2 = math_max_s32(vout1x2, vmagic_min);
145 vout1x3 = math_max_s32(vout1x3, vmagic_min);
146
147 const int32_t vmagic_max = params->fp32_scalar_imagic.magic_max;
148 vout0x0 = math_min_s32(vout0x0, vmagic_max);
149 vout0x1 = math_min_s32(vout0x1, vmagic_max);
150 vout0x2 = math_min_s32(vout0x2, vmagic_max);
151 vout0x3 = math_min_s32(vout0x3, vmagic_max);
152 vout1x0 = math_min_s32(vout1x0, vmagic_max);
153 vout1x1 = math_min_s32(vout1x1, vmagic_max);
154 vout1x2 = math_min_s32(vout1x2, vmagic_max);
155 vout1x3 = math_min_s32(vout1x3, vmagic_max);
156
157 const int32_t vmagic_bias_less_zero_point = params->fp32_scalar_imagic.magic_bias_less_zero_point;
158 vout0x0 -= vmagic_bias_less_zero_point;
159 vout0x1 -= vmagic_bias_less_zero_point;
160 vout0x2 -= vmagic_bias_less_zero_point;
161 vout0x3 -= vmagic_bias_less_zero_point;
162 vout1x0 -= vmagic_bias_less_zero_point;
163 vout1x1 -= vmagic_bias_less_zero_point;
164 vout1x2 -= vmagic_bias_less_zero_point;
165 vout1x3 -= vmagic_bias_less_zero_point;
166
167 if XNN_LIKELY(nc >= 4) {
168 c1[0] = (uint8_t) vout1x0;
169 c1[1] = (uint8_t) vout1x1;
170 c1[2] = (uint8_t) vout1x2;
171 c1[3] = (uint8_t) vout1x3;
172 c0[0] = (uint8_t) vout0x0;
173 c0[1] = (uint8_t) vout0x1;
174 c0[2] = (uint8_t) vout0x2;
175 c0[3] = (uint8_t) vout0x3;
176
177 c1 = (uint8_t*) ((uintptr_t) c1 + cn_stride);
178 c0 = (uint8_t*) ((uintptr_t) c0 + cn_stride);
179
180 a = (const uint8_t**restrict) ((uintptr_t) a - ks);
181 nc -= 4;
182 } else {
183 if (nc & 2) {
184 c1[0] = (uint8_t) vout1x0;
185 c1[1] = (uint8_t) vout1x1;
186 vout1x0 = vout1x2;
187 c1 += 2;
188 c0[0] = (uint8_t) vout0x0;
189 c0[1] = (uint8_t) vout0x1;
190 vout0x0 = vout0x2;
191 c0 += 2;
192 }
193 if (nc & 1) {
194 c1[0] = (uint8_t) vout1x0;
195 c0[0] = (uint8_t) vout0x0;
196 }
197
198 nc = 0;
199 }
200 } while (nc != 0);
201 }
202