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_fmagic(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_fmagic(
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_fmagic.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 voutput_min_less_zero_point = params->fp32_scalar_fmagic.output_min_less_zero_point;
109 vfpacc0x0 = math_max_f32(vfpacc0x0, voutput_min_less_zero_point);
110 vfpacc0x1 = math_max_f32(vfpacc0x1, voutput_min_less_zero_point);
111 vfpacc1x0 = math_max_f32(vfpacc1x0, voutput_min_less_zero_point);
112 vfpacc1x1 = math_max_f32(vfpacc1x1, voutput_min_less_zero_point);
113 vfpacc2x0 = math_max_f32(vfpacc2x0, voutput_min_less_zero_point);
114 vfpacc2x1 = math_max_f32(vfpacc2x1, voutput_min_less_zero_point);
115 vfpacc3x0 = math_max_f32(vfpacc3x0, voutput_min_less_zero_point);
116 vfpacc3x1 = math_max_f32(vfpacc3x1, voutput_min_less_zero_point);
117
118 const float voutput_max_less_zero_point = params->fp32_scalar_fmagic.output_max_less_zero_point;
119 vfpacc0x0 = math_min_f32(vfpacc0x0, voutput_max_less_zero_point);
120 vfpacc0x1 = math_min_f32(vfpacc0x1, voutput_max_less_zero_point);
121 vfpacc1x0 = math_min_f32(vfpacc1x0, voutput_max_less_zero_point);
122 vfpacc1x1 = math_min_f32(vfpacc1x1, voutput_max_less_zero_point);
123 vfpacc2x0 = math_min_f32(vfpacc2x0, voutput_max_less_zero_point);
124 vfpacc2x1 = math_min_f32(vfpacc2x1, voutput_max_less_zero_point);
125 vfpacc3x0 = math_min_f32(vfpacc3x0, voutput_max_less_zero_point);
126 vfpacc3x1 = math_min_f32(vfpacc3x1, voutput_max_less_zero_point);
127
128 const float vmagic_bias = params->fp32_scalar_fmagic.magic_bias;
129 vfpacc0x0 += vmagic_bias;
130 vfpacc0x1 += vmagic_bias;
131 vfpacc1x0 += vmagic_bias;
132 vfpacc1x1 += vmagic_bias;
133 vfpacc2x0 += vmagic_bias;
134 vfpacc2x1 += vmagic_bias;
135 vfpacc3x0 += vmagic_bias;
136 vfpacc3x1 += vmagic_bias;
137
138 const int32_t vmagic_bias_less_output_zero_point = params->fp32_scalar_fmagic.magic_bias_less_output_zero_point;
139 int32_t vout0x0 = (int32_t) float_as_uint32(vfpacc0x0) - vmagic_bias_less_output_zero_point;
140 int32_t vout0x1 = (int32_t) float_as_uint32(vfpacc0x1) - vmagic_bias_less_output_zero_point;
141 int32_t vout1x0 = (int32_t) float_as_uint32(vfpacc1x0) - vmagic_bias_less_output_zero_point;
142 int32_t vout1x1 = (int32_t) float_as_uint32(vfpacc1x1) - vmagic_bias_less_output_zero_point;
143 int32_t vout2x0 = (int32_t) float_as_uint32(vfpacc2x0) - vmagic_bias_less_output_zero_point;
144 int32_t vout2x1 = (int32_t) float_as_uint32(vfpacc2x1) - vmagic_bias_less_output_zero_point;
145 int32_t vout3x0 = (int32_t) float_as_uint32(vfpacc3x0) - vmagic_bias_less_output_zero_point;
146 int32_t vout3x1 = (int32_t) float_as_uint32(vfpacc3x1) - vmagic_bias_less_output_zero_point;
147
148 if XNN_LIKELY(nc >= 2) {
149 c0[0] = (int8_t) vout0x0;
150 c0[1] = (int8_t) vout0x1;
151 c1[0] = (int8_t) vout1x0;
152 c1[1] = (int8_t) vout1x1;
153 c2[0] = (int8_t) vout2x0;
154 c2[1] = (int8_t) vout2x1;
155 c3[0] = (int8_t) vout3x0;
156 c3[1] = (int8_t) vout3x1;
157
158 a0 = (const int8_t*) ((uintptr_t) a0 - kc);
159 a1 = (const int8_t*) ((uintptr_t) a1 - kc);
160 a2 = (const int8_t*) ((uintptr_t) a2 - kc);
161 a3 = (const int8_t*) ((uintptr_t) a3 - kc);
162
163 c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
164 c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
165 c2 = (int8_t*) ((uintptr_t) c2 + cn_stride);
166 c3 = (int8_t*) ((uintptr_t) c3 + cn_stride);
167
168 nc -= 2;
169 } else {
170 if (nc & 1) {
171 c0[0] = (int8_t) vout0x0;
172 c1[0] = (int8_t) vout1x0;
173 c2[0] = (int8_t) vout2x0;
174 c3[0] = (int8_t) vout3x0;
175 }
176
177 nc = 0;
178 }
179 } while (nc != 0);
180 }
181