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
15
xnn_qu8_gemm_minmax_fp32_ukernel_1x4__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)])16 void xnn_qu8_gemm_minmax_fp32_ukernel_1x4__scalar_imagic(
17 size_t mr,
18 size_t nc,
19 size_t kc,
20 const uint8_t* restrict a,
21 size_t a_stride,
22 const void* restrict w,
23 uint8_t* restrict c,
24 size_t cm_stride,
25 size_t cn_stride,
26 const union xnn_qu8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)])
27 {
28 assert(mr != 0);
29 assert(mr <= 1);
30 assert(nc != 0);
31 assert(kc != 0);
32
33 const uint8_t* a0 = a;
34 uint8_t* c0 = c;
35
36 const int32_t vb_zero_point = params->fp32_scalar_imagic.kernel_zero_point;
37 do {
38 int32_t vacc0x0 = ((const int32_t*) w)[0];
39 int32_t vacc0x1 = ((const int32_t*) w)[1];
40 int32_t vacc0x2 = ((const int32_t*) w)[2];
41 int32_t vacc0x3 = ((const int32_t*) w)[3];
42 w = (const void*) ((const int32_t*) w + 4);
43
44 size_t k = kc;
45 do {
46 const int32_t va0 = (int32_t) (uint32_t) *a0++;
47
48 const int32_t vb0 = (int32_t) (uint32_t) ((const uint8_t*) w)[0] - vb_zero_point;
49 const int32_t vb1 = (int32_t) (uint32_t) ((const uint8_t*) w)[1] - vb_zero_point;
50 const int32_t vb2 = (int32_t) (uint32_t) ((const uint8_t*) w)[2] - vb_zero_point;
51 const int32_t vb3 = (int32_t) (uint32_t) ((const uint8_t*) w)[3] - vb_zero_point;
52 w = (const void*) ((const uint8_t*) w + 4);
53
54 vacc0x0 += va0 * vb0;
55 vacc0x1 += va0 * vb1;
56 vacc0x2 += va0 * vb2;
57 vacc0x3 += va0 * vb3;
58
59 k -= sizeof(uint8_t);
60 } while (k != 0);
61
62 float vfpacc0x0 = (float) vacc0x0;
63 float vfpacc0x1 = (float) vacc0x1;
64 float vfpacc0x2 = (float) vacc0x2;
65 float vfpacc0x3 = (float) vacc0x3;
66
67 const float vscale = params->fp32_scalar_imagic.scale;
68 vfpacc0x0 *= vscale;
69 vfpacc0x1 *= vscale;
70 vfpacc0x2 *= vscale;
71 vfpacc0x3 *= vscale;
72
73 const float vmagic_bias = params->fp32_scalar_imagic.magic_bias;
74 vfpacc0x0 += vmagic_bias;
75 vfpacc0x1 += vmagic_bias;
76 vfpacc0x2 += vmagic_bias;
77 vfpacc0x3 += vmagic_bias;
78
79 int32_t vout0x0 = (int32_t) float_as_uint32(vfpacc0x0);
80 int32_t vout0x1 = (int32_t) float_as_uint32(vfpacc0x1);
81 int32_t vout0x2 = (int32_t) float_as_uint32(vfpacc0x2);
82 int32_t vout0x3 = (int32_t) float_as_uint32(vfpacc0x3);
83
84 const int32_t vmagic_min = params->fp32_scalar_imagic.magic_min;
85 vout0x0 = math_max_s32(vout0x0, vmagic_min);
86 vout0x1 = math_max_s32(vout0x1, vmagic_min);
87 vout0x2 = math_max_s32(vout0x2, vmagic_min);
88 vout0x3 = math_max_s32(vout0x3, vmagic_min);
89
90 const int32_t vmagic_max = params->fp32_scalar_imagic.magic_max;
91 vout0x0 = math_min_s32(vout0x0, vmagic_max);
92 vout0x1 = math_min_s32(vout0x1, vmagic_max);
93 vout0x2 = math_min_s32(vout0x2, vmagic_max);
94 vout0x3 = math_min_s32(vout0x3, vmagic_max);
95
96 const int32_t vmagic_bias_less_zero_point = params->fp32_scalar_imagic.magic_bias_less_zero_point;
97 vout0x0 -= vmagic_bias_less_zero_point;
98 vout0x1 -= vmagic_bias_less_zero_point;
99 vout0x2 -= vmagic_bias_less_zero_point;
100 vout0x3 -= vmagic_bias_less_zero_point;
101
102 if XNN_LIKELY(nc >= 4) {
103 c0[0] = (uint8_t) vout0x0;
104 c0[1] = (uint8_t) vout0x1;
105 c0[2] = (uint8_t) vout0x2;
106 c0[3] = (uint8_t) vout0x3;
107
108 a0 = (const uint8_t*) ((uintptr_t) a0 - kc);
109
110 c0 = (uint8_t*) ((uintptr_t) c0 + cn_stride);
111
112 nc -= 4;
113 } else {
114 if (nc & 2) {
115 c0[0] = (uint8_t) vout0x0;
116 c0[1] = (uint8_t) vout0x1;
117 vout0x0 = vout0x2;
118 c0 += 2;
119 }
120 if (nc & 1) {
121 c0[0] = (uint8_t) vout0x0;
122 }
123
124 nc = 0;
125 }
126 } while (nc != 0);
127 }
128