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 <xnnpack/math.h>
13 #include <xnnpack/gemm.h>
14 #include <xnnpack/unaligned.h>
15
16
xnn_qs8_igemm_minmax_fp32_ukernel_3x2__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_conv_minmax_params params[restrict XNN_MIN_ELEMENTS (1)])17 void xnn_qs8_igemm_minmax_fp32_ukernel_3x2__scalar_imagic(
18 size_t mr,
19 size_t nc,
20 size_t kc,
21 size_t ks,
22 const int8_t**restrict a,
23 const void*restrict w,
24 int8_t*restrict c,
25 size_t cm_stride,
26 size_t cn_stride,
27 size_t a_offset,
28 const int8_t* zero,
29 const union xnn_qs8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)])
30 {
31 assert(mr != 0);
32 assert(mr <= 3);
33 assert(nc != 0);
34 assert(kc != 0);
35 assert(ks != 0);
36 assert(ks % (3 * sizeof(void*)) == 0);
37 assert(a != NULL);
38 assert(w != NULL);
39 assert(c != NULL);
40
41 int8_t* c0 = c;
42 int8_t* c1 = (int8_t*) ((uintptr_t) c0 + cm_stride);
43 if XNN_UNPREDICTABLE(mr < 2) {
44 c1 = c0;
45 }
46 int8_t* c2 = (int8_t*) ((uintptr_t) c1 + cm_stride);
47 if XNN_UNPREDICTABLE(mr <= 2) {
48 c2 = c1;
49 }
50
51 do {
52 int32_t vacc0x0 = unaligned_indexed_load_s32(w, 0);
53 int32_t vacc0x1 = unaligned_indexed_load_s32(w, 1);
54 int32_t vacc1x0 = vacc0x0;
55 int32_t vacc1x1 = vacc0x1;
56 int32_t vacc2x0 = vacc0x0;
57 int32_t vacc2x1 = vacc0x1;
58 w = (const void*) ((const int32_t*) w + 2);
59
60 size_t p = ks;
61 do {
62 const int8_t* restrict a0 = a[0];
63 assert(a0 != NULL);
64 if XNN_UNPREDICTABLE(a0 != zero) {
65 a0 = (const int8_t*) ((uintptr_t) a0 + a_offset);
66 }
67 const int8_t* restrict a1 = a[1];
68 assert(a1 != NULL);
69 if XNN_UNPREDICTABLE(a1 != zero) {
70 a1 = (const int8_t*) ((uintptr_t) a1 + a_offset);
71 }
72 const int8_t* restrict a2 = a[2];
73 assert(a2 != NULL);
74 if XNN_UNPREDICTABLE(a2 != zero) {
75 a2 = (const int8_t*) ((uintptr_t) a2 + a_offset);
76 }
77 a += 3;
78
79 size_t k = kc;
80 do {
81 const int32_t va0 = (int32_t) *a0++;
82 const int32_t va1 = (int32_t) *a1++;
83 const int32_t va2 = (int32_t) *a2++;
84
85 const int32_t vb0 = (int32_t) ((const int8_t*) w)[0];
86 const int32_t vb1 = (int32_t) ((const int8_t*) w)[1];
87 w = (const void*) ((const int8_t*) w + 2);
88
89 vacc0x0 += va0 * vb0;
90 vacc0x1 += va0 * vb1;
91 vacc1x0 += va1 * vb0;
92 vacc1x1 += va1 * vb1;
93 vacc2x0 += va2 * vb0;
94 vacc2x1 += va2 * vb1;
95
96 k -= sizeof(int8_t);
97 } while (k != 0);
98 p -= 3 * sizeof(void*);
99 } while (p != 0);
100
101 float vfpacc0x0 = (float) vacc0x0;
102 float vfpacc0x1 = (float) vacc0x1;
103 float vfpacc1x0 = (float) vacc1x0;
104 float vfpacc1x1 = (float) vacc1x1;
105 float vfpacc2x0 = (float) vacc2x0;
106 float vfpacc2x1 = (float) vacc2x1;
107
108 const float vscale = params->fp32_scalar_imagic.scale;
109 vfpacc0x0 *= vscale;
110 vfpacc0x1 *= vscale;
111 vfpacc1x0 *= vscale;
112 vfpacc1x1 *= vscale;
113 vfpacc2x0 *= vscale;
114 vfpacc2x1 *= vscale;
115
116 const float vmagic_bias = params->fp32_scalar_imagic.magic_bias;
117 vfpacc0x0 += vmagic_bias;
118 vfpacc0x1 += vmagic_bias;
119 vfpacc1x0 += vmagic_bias;
120 vfpacc1x1 += vmagic_bias;
121 vfpacc2x0 += vmagic_bias;
122 vfpacc2x1 += vmagic_bias;
123
124 int32_t vout0x0 = (int32_t) float_as_uint32(vfpacc0x0);
125 int32_t vout0x1 = (int32_t) float_as_uint32(vfpacc0x1);
126 int32_t vout1x0 = (int32_t) float_as_uint32(vfpacc1x0);
127 int32_t vout1x1 = (int32_t) float_as_uint32(vfpacc1x1);
128 int32_t vout2x0 = (int32_t) float_as_uint32(vfpacc2x0);
129 int32_t vout2x1 = (int32_t) float_as_uint32(vfpacc2x1);
130
131 const int32_t vmagic_min = params->fp32_scalar_imagic.magic_min;
132 vout0x0 = math_max_s32(vout0x0, vmagic_min);
133 vout0x1 = math_max_s32(vout0x1, vmagic_min);
134 vout1x0 = math_max_s32(vout1x0, vmagic_min);
135 vout1x1 = math_max_s32(vout1x1, vmagic_min);
136 vout2x0 = math_max_s32(vout2x0, vmagic_min);
137 vout2x1 = math_max_s32(vout2x1, vmagic_min);
138
139 const int32_t vmagic_max = params->fp32_scalar_imagic.magic_max;
140 vout0x0 = math_min_s32(vout0x0, vmagic_max);
141 vout0x1 = math_min_s32(vout0x1, vmagic_max);
142 vout1x0 = math_min_s32(vout1x0, vmagic_max);
143 vout1x1 = math_min_s32(vout1x1, vmagic_max);
144 vout2x0 = math_min_s32(vout2x0, vmagic_max);
145 vout2x1 = math_min_s32(vout2x1, 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
155 if XNN_LIKELY(nc >= 2) {
156 c2[0] = (int8_t) vout2x0;
157 c2[1] = (int8_t) vout2x1;
158 c1[0] = (int8_t) vout1x0;
159 c1[1] = (int8_t) vout1x1;
160 c0[0] = (int8_t) vout0x0;
161 c0[1] = (int8_t) vout0x1;
162
163 c2 = (int8_t*) ((uintptr_t) c2 + cn_stride);
164 c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
165 c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
166
167 a = (const int8_t**restrict) ((uintptr_t) a - ks);
168 nc -= 2;
169 } else {
170 if (nc & 1) {
171 c2[0] = (int8_t) vout2x0;
172 c1[0] = (int8_t) vout1x0;
173 c0[0] = (int8_t) vout0x0;
174 }
175
176 nc = 0;
177 }
178 } while (nc != 0);
179 }
180