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
15
xnn_qc8_igemm_minmax_fp32_ukernel_1x4__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_qc8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS (1)])16 void xnn_qc8_igemm_minmax_fp32_ukernel_1x4__scalar_imagic(
17 size_t mr,
18 size_t nc,
19 size_t kc,
20 size_t ks,
21 const int8_t**restrict a,
22 const void*restrict w,
23 int8_t*restrict c,
24 size_t cm_stride,
25 size_t cn_stride,
26 size_t a_offset,
27 const int8_t* zero,
28 const union xnn_qc8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)])
29 {
30 assert(mr != 0);
31 assert(mr <= 1);
32 assert(nc != 0);
33 assert(kc != 0);
34 assert(ks != 0);
35 assert(ks % (1 * sizeof(void*)) == 0);
36 assert(a != NULL);
37 assert(w != NULL);
38 assert(c != NULL);
39
40 int8_t* c0 = c;
41
42 do {
43 int32_t vacc0x0 = ((const int32_t*) w)[0];
44 int32_t vacc0x1 = ((const int32_t*) w)[1];
45 int32_t vacc0x2 = ((const int32_t*) w)[2];
46 int32_t vacc0x3 = ((const int32_t*) w)[3];
47 w = (const void*) ((const int32_t*) w + 4);
48
49 size_t p = ks;
50 do {
51 const int8_t* restrict a0 = a[0];
52 assert(a0 != NULL);
53 if XNN_UNPREDICTABLE(a0 != zero) {
54 a0 = (const int8_t*) ((uintptr_t) a0 + a_offset);
55 }
56 a += 1;
57
58 size_t k = kc;
59 do {
60 const int32_t va0 = (int32_t) *a0++;
61
62 const int32_t vb0 = (int32_t) ((const int8_t*) w)[0];
63 const int32_t vb1 = (int32_t) ((const int8_t*) w)[1];
64 const int32_t vb2 = (int32_t) ((const int8_t*) w)[2];
65 const int32_t vb3 = (int32_t) ((const int8_t*) w)[3];
66 w = (const void*) ((const int8_t*) w + 4);
67
68 vacc0x0 += va0 * vb0;
69 vacc0x1 += va0 * vb1;
70 vacc0x2 += va0 * vb2;
71 vacc0x3 += va0 * vb3;
72
73 k -= sizeof(int8_t);
74 } while (k != 0);
75 p -= 1 * sizeof(void*);
76 } while (p != 0);
77
78 float vfpacc0x0 = (float) vacc0x0;
79 float vfpacc0x1 = (float) vacc0x1;
80 float vfpacc0x2 = (float) vacc0x2;
81 float vfpacc0x3 = (float) vacc0x3;
82
83 const float vscale0 = ((const float*) w)[0];
84 vfpacc0x0 *= vscale0;
85 const float vscale1 = ((const float*) w)[1];
86 vfpacc0x1 *= vscale1;
87 const float vscale2 = ((const float*) w)[2];
88 vfpacc0x2 *= vscale2;
89 const float vscale3 = ((const float*) w)[3];
90 vfpacc0x3 *= vscale3;
91 w = (const void*) ((const float*) w + 4);
92
93 const float vmagic_bias = params->fp32_scalar_imagic.magic_bias;
94 vfpacc0x0 += vmagic_bias;
95 vfpacc0x1 += vmagic_bias;
96 vfpacc0x2 += vmagic_bias;
97 vfpacc0x3 += vmagic_bias;
98
99 int32_t vout0x0 = (int32_t) float_as_uint32(vfpacc0x0);
100 int32_t vout0x1 = (int32_t) float_as_uint32(vfpacc0x1);
101 int32_t vout0x2 = (int32_t) float_as_uint32(vfpacc0x2);
102 int32_t vout0x3 = (int32_t) float_as_uint32(vfpacc0x3);
103
104 const int32_t vmagic_min = params->fp32_scalar_imagic.magic_min;
105 vout0x0 = math_max_s32(vout0x0, vmagic_min);
106 vout0x1 = math_max_s32(vout0x1, vmagic_min);
107 vout0x2 = math_max_s32(vout0x2, vmagic_min);
108 vout0x3 = math_max_s32(vout0x3, vmagic_min);
109
110 const int32_t vmagic_max = params->fp32_scalar_imagic.magic_max;
111 vout0x0 = math_min_s32(vout0x0, vmagic_max);
112 vout0x1 = math_min_s32(vout0x1, vmagic_max);
113 vout0x2 = math_min_s32(vout0x2, vmagic_max);
114 vout0x3 = math_min_s32(vout0x3, vmagic_max);
115
116 const int32_t vmagic_bias_less_zero_point = params->fp32_scalar_imagic.magic_bias_less_zero_point;
117 vout0x0 -= vmagic_bias_less_zero_point;
118 vout0x1 -= vmagic_bias_less_zero_point;
119 vout0x2 -= vmagic_bias_less_zero_point;
120 vout0x3 -= vmagic_bias_less_zero_point;
121
122 if XNN_LIKELY(nc >= 4) {
123 c0[0] = (int8_t) vout0x0;
124 c0[1] = (int8_t) vout0x1;
125 c0[2] = (int8_t) vout0x2;
126 c0[3] = (int8_t) vout0x3;
127
128 c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
129
130 a = (const int8_t**restrict) ((uintptr_t) a - ks);
131 nc -= 4;
132 } else {
133 if (nc & 2) {
134 c0[0] = (int8_t) vout0x0;
135 c0[1] = (int8_t) vout0x1;
136 vout0x0 = vout0x2;
137 c0 += 2;
138 }
139 if (nc & 1) {
140 c0[0] = (int8_t) vout0x0;
141 }
142
143 nc = 0;
144 }
145 } while (nc != 0);
146 }
147