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 #include <xnnpack/unaligned.h>
15
16
xnn_qs8_gemm_minmax_fp32_ukernel_4x2__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_qs8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS (1)])17 void xnn_qs8_gemm_minmax_fp32_ukernel_4x2__scalar_imagic(
18 size_t mr,
19 size_t nc,
20 size_t kc,
21 const int8_t* restrict a,
22 size_t a_stride,
23 const void* restrict w,
24 int8_t* restrict c,
25 size_t cm_stride,
26 size_t cn_stride,
27 const union xnn_qs8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)])
28 {
29 assert(mr != 0);
30 assert(mr <= 4);
31 assert(nc != 0);
32 assert(kc != 0);
33
34 const int8_t* a0 = a;
35 int8_t* c0 = c;
36 const int8_t* a1 = (const int8_t*) ((uintptr_t) a0 + a_stride);
37 int8_t* c1 = (int8_t*) ((uintptr_t) c0 + cm_stride);
38 if XNN_UNPREDICTABLE(mr < 2) {
39 a1 = a0;
40 c1 = c0;
41 }
42 const int8_t* a2 = (const int8_t*) ((uintptr_t) a1 + a_stride);
43 int8_t* c2 = (int8_t*) ((uintptr_t) c1 + cm_stride);
44 if XNN_UNPREDICTABLE(mr <= 2) {
45 a2 = a1;
46 c2 = c1;
47 }
48 const int8_t* a3 = (const int8_t*) ((uintptr_t) a2 + a_stride);
49 int8_t* c3 = (int8_t*) ((uintptr_t) c2 + cm_stride);
50 if XNN_UNPREDICTABLE(mr != 4) {
51 a3 = a2;
52 c3 = c2;
53 }
54
55 do {
56 int32_t vacc0x0 = unaligned_indexed_load_s32(w, 0);
57 int32_t vacc0x1 = unaligned_indexed_load_s32(w, 1);
58 int32_t vacc1x0 = vacc0x0;
59 int32_t vacc1x1 = vacc0x1;
60 int32_t vacc2x0 = vacc0x0;
61 int32_t vacc2x1 = vacc0x1;
62 int32_t vacc3x0 = vacc0x0;
63 int32_t vacc3x1 = vacc0x1;
64 w = (const void*) ((const int32_t*) w + 2);
65
66 size_t k = kc;
67 do {
68 const int32_t va0 = (int32_t) *a0++;
69 const int32_t va1 = (int32_t) *a1++;
70 const int32_t va2 = (int32_t) *a2++;
71 const int32_t va3 = (int32_t) *a3++;
72
73 const int32_t vb0 = (int32_t) ((const int8_t*) w)[0];
74 const int32_t vb1 = (int32_t) ((const int8_t*) w)[1];
75 w = (const void*) ((const int8_t*) w + 2);
76
77 vacc0x0 += va0 * vb0;
78 vacc0x1 += va0 * vb1;
79 vacc1x0 += va1 * vb0;
80 vacc1x1 += va1 * vb1;
81 vacc2x0 += va2 * vb0;
82 vacc2x1 += va2 * vb1;
83 vacc3x0 += va3 * vb0;
84 vacc3x1 += va3 * vb1;
85
86 k -= sizeof(int8_t);
87 } while (k != 0);
88
89 float vfpacc0x0 = (float) vacc0x0;
90 float vfpacc0x1 = (float) vacc0x1;
91 float vfpacc1x0 = (float) vacc1x0;
92 float vfpacc1x1 = (float) vacc1x1;
93 float vfpacc2x0 = (float) vacc2x0;
94 float vfpacc2x1 = (float) vacc2x1;
95 float vfpacc3x0 = (float) vacc3x0;
96 float vfpacc3x1 = (float) vacc3x1;
97
98 const float vscale = params->fp32_scalar_imagic.scale;
99 vfpacc0x0 *= vscale;
100 vfpacc0x1 *= vscale;
101 vfpacc1x0 *= vscale;
102 vfpacc1x1 *= vscale;
103 vfpacc2x0 *= vscale;
104 vfpacc2x1 *= vscale;
105 vfpacc3x0 *= vscale;
106 vfpacc3x1 *= vscale;
107
108 const float vmagic_bias = params->fp32_scalar_imagic.magic_bias;
109 vfpacc0x0 += vmagic_bias;
110 vfpacc0x1 += vmagic_bias;
111 vfpacc1x0 += vmagic_bias;
112 vfpacc1x1 += vmagic_bias;
113 vfpacc2x0 += vmagic_bias;
114 vfpacc2x1 += vmagic_bias;
115 vfpacc3x0 += vmagic_bias;
116 vfpacc3x1 += vmagic_bias;
117
118 int32_t vout0x0 = (int32_t) float_as_uint32(vfpacc0x0);
119 int32_t vout0x1 = (int32_t) float_as_uint32(vfpacc0x1);
120 int32_t vout1x0 = (int32_t) float_as_uint32(vfpacc1x0);
121 int32_t vout1x1 = (int32_t) float_as_uint32(vfpacc1x1);
122 int32_t vout2x0 = (int32_t) float_as_uint32(vfpacc2x0);
123 int32_t vout2x1 = (int32_t) float_as_uint32(vfpacc2x1);
124 int32_t vout3x0 = (int32_t) float_as_uint32(vfpacc3x0);
125 int32_t vout3x1 = (int32_t) float_as_uint32(vfpacc3x1);
126
127 const int32_t vmagic_min = params->fp32_scalar_imagic.magic_min;
128 vout0x0 = math_max_s32(vout0x0, vmagic_min);
129 vout0x1 = math_max_s32(vout0x1, vmagic_min);
130 vout1x0 = math_max_s32(vout1x0, vmagic_min);
131 vout1x1 = math_max_s32(vout1x1, vmagic_min);
132 vout2x0 = math_max_s32(vout2x0, vmagic_min);
133 vout2x1 = math_max_s32(vout2x1, vmagic_min);
134 vout3x0 = math_max_s32(vout3x0, vmagic_min);
135 vout3x1 = math_max_s32(vout3x1, vmagic_min);
136
137 const int32_t vmagic_max = params->fp32_scalar_imagic.magic_max;
138 vout0x0 = math_min_s32(vout0x0, vmagic_max);
139 vout0x1 = math_min_s32(vout0x1, vmagic_max);
140 vout1x0 = math_min_s32(vout1x0, vmagic_max);
141 vout1x1 = math_min_s32(vout1x1, vmagic_max);
142 vout2x0 = math_min_s32(vout2x0, vmagic_max);
143 vout2x1 = math_min_s32(vout2x1, vmagic_max);
144 vout3x0 = math_min_s32(vout3x0, vmagic_max);
145 vout3x1 = math_min_s32(vout3x1, vmagic_max);
146
147 const int32_t vmagic_bias_less_zero_point = params->fp32_scalar_imagic.magic_bias_less_zero_point;
148 vout0x0 -= vmagic_bias_less_zero_point;
149 vout0x1 -= vmagic_bias_less_zero_point;
150 vout1x0 -= vmagic_bias_less_zero_point;
151 vout1x1 -= vmagic_bias_less_zero_point;
152 vout2x0 -= vmagic_bias_less_zero_point;
153 vout2x1 -= vmagic_bias_less_zero_point;
154 vout3x0 -= vmagic_bias_less_zero_point;
155 vout3x1 -= vmagic_bias_less_zero_point;
156
157 if XNN_LIKELY(nc >= 2) {
158 c0[0] = (int8_t) vout0x0;
159 c0[1] = (int8_t) vout0x1;
160 c1[0] = (int8_t) vout1x0;
161 c1[1] = (int8_t) vout1x1;
162 c2[0] = (int8_t) vout2x0;
163 c2[1] = (int8_t) vout2x1;
164 c3[0] = (int8_t) vout3x0;
165 c3[1] = (int8_t) vout3x1;
166
167 a0 = (const int8_t*) ((uintptr_t) a0 - kc);
168 a1 = (const int8_t*) ((uintptr_t) a1 - kc);
169 a2 = (const int8_t*) ((uintptr_t) a2 - kc);
170 a3 = (const int8_t*) ((uintptr_t) a3 - kc);
171
172 c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
173 c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
174 c2 = (int8_t*) ((uintptr_t) c2 + cn_stride);
175 c3 = (int8_t*) ((uintptr_t) c3 + cn_stride);
176
177 nc -= 2;
178 } else {
179 if (nc & 1) {
180 c0[0] = (int8_t) vout0x0;
181 c1[0] = (int8_t) vout1x0;
182 c2[0] = (int8_t) vout2x0;
183 c3[0] = (int8_t) vout3x0;
184 }
185
186 nc = 0;
187 }
188 } while (nc != 0);
189 }
190