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_3x2__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_3x2__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 <= 3);
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
49 do {
50 int32_t vacc0x0 = unaligned_indexed_load_s32(w, 0);
51 int32_t vacc0x1 = unaligned_indexed_load_s32(w, 1);
52 int32_t vacc1x0 = vacc0x0;
53 int32_t vacc1x1 = vacc0x1;
54 int32_t vacc2x0 = vacc0x0;
55 int32_t vacc2x1 = vacc0x1;
56 w = (const void*) ((const int32_t*) w + 2);
57
58 size_t k = kc;
59 do {
60 const int32_t va0 = (int32_t) *a0++;
61 const int32_t va1 = (int32_t) *a1++;
62 const int32_t va2 = (int32_t) *a2++;
63
64 const int32_t vb0 = (int32_t) ((const int8_t*) w)[0];
65 const int32_t vb1 = (int32_t) ((const int8_t*) w)[1];
66 w = (const void*) ((const int8_t*) w + 2);
67
68 vacc0x0 += va0 * vb0;
69 vacc0x1 += va0 * vb1;
70 vacc1x0 += va1 * vb0;
71 vacc1x1 += va1 * vb1;
72 vacc2x0 += va2 * vb0;
73 vacc2x1 += va2 * vb1;
74
75 k -= sizeof(int8_t);
76 } while (k != 0);
77
78 float vfpacc0x0 = (float) vacc0x0;
79 float vfpacc0x1 = (float) vacc0x1;
80 float vfpacc1x0 = (float) vacc1x0;
81 float vfpacc1x1 = (float) vacc1x1;
82 float vfpacc2x0 = (float) vacc2x0;
83 float vfpacc2x1 = (float) vacc2x1;
84
85 const float vscale = params->fp32_scalar_imagic.scale;
86 vfpacc0x0 *= vscale;
87 vfpacc0x1 *= vscale;
88 vfpacc1x0 *= vscale;
89 vfpacc1x1 *= vscale;
90 vfpacc2x0 *= vscale;
91 vfpacc2x1 *= vscale;
92
93 const float vmagic_bias = params->fp32_scalar_imagic.magic_bias;
94 vfpacc0x0 += vmagic_bias;
95 vfpacc0x1 += vmagic_bias;
96 vfpacc1x0 += vmagic_bias;
97 vfpacc1x1 += vmagic_bias;
98 vfpacc2x0 += vmagic_bias;
99 vfpacc2x1 += vmagic_bias;
100
101 int32_t vout0x0 = (int32_t) float_as_uint32(vfpacc0x0);
102 int32_t vout0x1 = (int32_t) float_as_uint32(vfpacc0x1);
103 int32_t vout1x0 = (int32_t) float_as_uint32(vfpacc1x0);
104 int32_t vout1x1 = (int32_t) float_as_uint32(vfpacc1x1);
105 int32_t vout2x0 = (int32_t) float_as_uint32(vfpacc2x0);
106 int32_t vout2x1 = (int32_t) float_as_uint32(vfpacc2x1);
107
108 const int32_t vmagic_min = params->fp32_scalar_imagic.magic_min;
109 vout0x0 = math_max_s32(vout0x0, vmagic_min);
110 vout0x1 = math_max_s32(vout0x1, vmagic_min);
111 vout1x0 = math_max_s32(vout1x0, vmagic_min);
112 vout1x1 = math_max_s32(vout1x1, vmagic_min);
113 vout2x0 = math_max_s32(vout2x0, vmagic_min);
114 vout2x1 = math_max_s32(vout2x1, vmagic_min);
115
116 const int32_t vmagic_max = params->fp32_scalar_imagic.magic_max;
117 vout0x0 = math_min_s32(vout0x0, vmagic_max);
118 vout0x1 = math_min_s32(vout0x1, vmagic_max);
119 vout1x0 = math_min_s32(vout1x0, vmagic_max);
120 vout1x1 = math_min_s32(vout1x1, vmagic_max);
121 vout2x0 = math_min_s32(vout2x0, vmagic_max);
122 vout2x1 = math_min_s32(vout2x1, vmagic_max);
123
124 const int32_t vmagic_bias_less_zero_point = params->fp32_scalar_imagic.magic_bias_less_zero_point;
125 vout0x0 -= vmagic_bias_less_zero_point;
126 vout0x1 -= vmagic_bias_less_zero_point;
127 vout1x0 -= vmagic_bias_less_zero_point;
128 vout1x1 -= vmagic_bias_less_zero_point;
129 vout2x0 -= vmagic_bias_less_zero_point;
130 vout2x1 -= vmagic_bias_less_zero_point;
131
132 if XNN_LIKELY(nc >= 2) {
133 c0[0] = (int8_t) vout0x0;
134 c0[1] = (int8_t) vout0x1;
135 c1[0] = (int8_t) vout1x0;
136 c1[1] = (int8_t) vout1x1;
137 c2[0] = (int8_t) vout2x0;
138 c2[1] = (int8_t) vout2x1;
139
140 a0 = (const int8_t*) ((uintptr_t) a0 - kc);
141 a1 = (const int8_t*) ((uintptr_t) a1 - kc);
142 a2 = (const int8_t*) ((uintptr_t) a2 - kc);
143
144 c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
145 c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
146 c2 = (int8_t*) ((uintptr_t) c2 + cn_stride);
147
148 nc -= 2;
149 } else {
150 if (nc & 1) {
151 c0[0] = (int8_t) vout0x0;
152 c1[0] = (int8_t) vout1x0;
153 c2[0] = (int8_t) vout2x0;
154 }
155
156 nc = 0;
157 }
158 } while (nc != 0);
159 }
160