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_qu8_gemm_minmax_fp32_ukernel_3x2__scalar_imagic(size_t mr,size_t nc,size_t kc,const uint8_t * restrict a,size_t a_stride,const void * restrict w,uint8_t * restrict c,size_t cm_stride,size_t cn_stride,const union xnn_qu8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS (1)])17 void xnn_qu8_gemm_minmax_fp32_ukernel_3x2__scalar_imagic(
18 size_t mr,
19 size_t nc,
20 size_t kc,
21 const uint8_t* restrict a,
22 size_t a_stride,
23 const void* restrict w,
24 uint8_t* restrict c,
25 size_t cm_stride,
26 size_t cn_stride,
27 const union xnn_qu8_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 uint8_t* a0 = a;
35 uint8_t* c0 = c;
36 const uint8_t* a1 = (const uint8_t*) ((uintptr_t) a0 + a_stride);
37 uint8_t* c1 = (uint8_t*) ((uintptr_t) c0 + cm_stride);
38 if XNN_UNPREDICTABLE(mr < 2) {
39 a1 = a0;
40 c1 = c0;
41 }
42 const uint8_t* a2 = (const uint8_t*) ((uintptr_t) a1 + a_stride);
43 uint8_t* c2 = (uint8_t*) ((uintptr_t) c1 + cm_stride);
44 if XNN_UNPREDICTABLE(mr <= 2) {
45 a2 = a1;
46 c2 = c1;
47 }
48
49 const int32_t vb_zero_point = params->fp32_scalar_imagic.kernel_zero_point;
50 do {
51 int32_t vacc0x0 = unaligned_indexed_load_s32(w, 0);
52 int32_t vacc0x1 = unaligned_indexed_load_s32(w, 1);
53 int32_t vacc1x0 = vacc0x0;
54 int32_t vacc1x1 = vacc0x1;
55 int32_t vacc2x0 = vacc0x0;
56 int32_t vacc2x1 = vacc0x1;
57 w = (const void*) ((const int32_t*) w + 2);
58
59 size_t k = kc;
60 do {
61 const int32_t va0 = (int32_t) (uint32_t) *a0++;
62 const int32_t va1 = (int32_t) (uint32_t) *a1++;
63 const int32_t va2 = (int32_t) (uint32_t) *a2++;
64
65 const int32_t vb0 = (int32_t) (uint32_t) ((const uint8_t*) w)[0] - vb_zero_point;
66 const int32_t vb1 = (int32_t) (uint32_t) ((const uint8_t*) w)[1] - vb_zero_point;
67 w = (const void*) ((const uint8_t*) w + 2);
68
69 vacc0x0 += va0 * vb0;
70 vacc0x1 += va0 * vb1;
71 vacc1x0 += va1 * vb0;
72 vacc1x1 += va1 * vb1;
73 vacc2x0 += va2 * vb0;
74 vacc2x1 += va2 * vb1;
75
76 k -= sizeof(uint8_t);
77 } while (k != 0);
78
79 float vfpacc0x0 = (float) vacc0x0;
80 float vfpacc0x1 = (float) vacc0x1;
81 float vfpacc1x0 = (float) vacc1x0;
82 float vfpacc1x1 = (float) vacc1x1;
83 float vfpacc2x0 = (float) vacc2x0;
84 float vfpacc2x1 = (float) vacc2x1;
85
86 const float vscale = params->fp32_scalar_imagic.scale;
87 vfpacc0x0 *= vscale;
88 vfpacc0x1 *= vscale;
89 vfpacc1x0 *= vscale;
90 vfpacc1x1 *= vscale;
91 vfpacc2x0 *= vscale;
92 vfpacc2x1 *= vscale;
93
94 const float vmagic_bias = params->fp32_scalar_imagic.magic_bias;
95 vfpacc0x0 += vmagic_bias;
96 vfpacc0x1 += vmagic_bias;
97 vfpacc1x0 += vmagic_bias;
98 vfpacc1x1 += vmagic_bias;
99 vfpacc2x0 += vmagic_bias;
100 vfpacc2x1 += vmagic_bias;
101
102 int32_t vout0x0 = (int32_t) float_as_uint32(vfpacc0x0);
103 int32_t vout0x1 = (int32_t) float_as_uint32(vfpacc0x1);
104 int32_t vout1x0 = (int32_t) float_as_uint32(vfpacc1x0);
105 int32_t vout1x1 = (int32_t) float_as_uint32(vfpacc1x1);
106 int32_t vout2x0 = (int32_t) float_as_uint32(vfpacc2x0);
107 int32_t vout2x1 = (int32_t) float_as_uint32(vfpacc2x1);
108
109 const int32_t vmagic_min = params->fp32_scalar_imagic.magic_min;
110 vout0x0 = math_max_s32(vout0x0, vmagic_min);
111 vout0x1 = math_max_s32(vout0x1, vmagic_min);
112 vout1x0 = math_max_s32(vout1x0, vmagic_min);
113 vout1x1 = math_max_s32(vout1x1, vmagic_min);
114 vout2x0 = math_max_s32(vout2x0, vmagic_min);
115 vout2x1 = math_max_s32(vout2x1, vmagic_min);
116
117 const int32_t vmagic_max = params->fp32_scalar_imagic.magic_max;
118 vout0x0 = math_min_s32(vout0x0, vmagic_max);
119 vout0x1 = math_min_s32(vout0x1, vmagic_max);
120 vout1x0 = math_min_s32(vout1x0, vmagic_max);
121 vout1x1 = math_min_s32(vout1x1, vmagic_max);
122 vout2x0 = math_min_s32(vout2x0, vmagic_max);
123 vout2x1 = math_min_s32(vout2x1, vmagic_max);
124
125 const int32_t vmagic_bias_less_zero_point = params->fp32_scalar_imagic.magic_bias_less_zero_point;
126 vout0x0 -= vmagic_bias_less_zero_point;
127 vout0x1 -= vmagic_bias_less_zero_point;
128 vout1x0 -= vmagic_bias_less_zero_point;
129 vout1x1 -= vmagic_bias_less_zero_point;
130 vout2x0 -= vmagic_bias_less_zero_point;
131 vout2x1 -= vmagic_bias_less_zero_point;
132
133 if XNN_LIKELY(nc >= 2) {
134 c0[0] = (uint8_t) vout0x0;
135 c0[1] = (uint8_t) vout0x1;
136 c1[0] = (uint8_t) vout1x0;
137 c1[1] = (uint8_t) vout1x1;
138 c2[0] = (uint8_t) vout2x0;
139 c2[1] = (uint8_t) vout2x1;
140
141 a0 = (const uint8_t*) ((uintptr_t) a0 - kc);
142 a1 = (const uint8_t*) ((uintptr_t) a1 - kc);
143 a2 = (const uint8_t*) ((uintptr_t) a2 - kc);
144
145 c0 = (uint8_t*) ((uintptr_t) c0 + cn_stride);
146 c1 = (uint8_t*) ((uintptr_t) c1 + cn_stride);
147 c2 = (uint8_t*) ((uintptr_t) c2 + cn_stride);
148
149 nc -= 2;
150 } else {
151 if (nc & 1) {
152 c0[0] = (uint8_t) vout0x0;
153 c1[0] = (uint8_t) vout1x0;
154 c2[0] = (uint8_t) vout2x0;
155 }
156
157 nc = 0;
158 }
159 } while (nc != 0);
160 }
161