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 #include <xnnpack/unaligned.h>
15
16
xnn_qs8_igemm_minmax_fp32_ukernel_4x2__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_qs8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS (1)])17 void xnn_qs8_igemm_minmax_fp32_ukernel_4x2__scalar_imagic(
18 size_t mr,
19 size_t nc,
20 size_t kc,
21 size_t ks,
22 const int8_t**restrict a,
23 const void*restrict w,
24 int8_t*restrict c,
25 size_t cm_stride,
26 size_t cn_stride,
27 size_t a_offset,
28 const int8_t* zero,
29 const union xnn_qs8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)])
30 {
31 assert(mr != 0);
32 assert(mr <= 4);
33 assert(nc != 0);
34 assert(kc != 0);
35 assert(ks != 0);
36 assert(ks % (4 * sizeof(void*)) == 0);
37 assert(a != NULL);
38 assert(w != NULL);
39 assert(c != NULL);
40
41 int8_t* c0 = c;
42 int8_t* c1 = (int8_t*) ((uintptr_t) c0 + cm_stride);
43 if XNN_UNPREDICTABLE(mr < 2) {
44 c1 = c0;
45 }
46 int8_t* c2 = (int8_t*) ((uintptr_t) c1 + cm_stride);
47 if XNN_UNPREDICTABLE(mr <= 2) {
48 c2 = c1;
49 }
50 int8_t* c3 = (int8_t*) ((uintptr_t) c2 + cm_stride);
51 if XNN_UNPREDICTABLE(mr != 4) {
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 p = ks;
67 do {
68 const int8_t* restrict a0 = a[0];
69 assert(a0 != NULL);
70 if XNN_UNPREDICTABLE(a0 != zero) {
71 a0 = (const int8_t*) ((uintptr_t) a0 + a_offset);
72 }
73 const int8_t* restrict a1 = a[1];
74 assert(a1 != NULL);
75 if XNN_UNPREDICTABLE(a1 != zero) {
76 a1 = (const int8_t*) ((uintptr_t) a1 + a_offset);
77 }
78 const int8_t* restrict a2 = a[2];
79 assert(a2 != NULL);
80 if XNN_UNPREDICTABLE(a2 != zero) {
81 a2 = (const int8_t*) ((uintptr_t) a2 + a_offset);
82 }
83 const int8_t* restrict a3 = a[3];
84 assert(a3 != NULL);
85 if XNN_UNPREDICTABLE(a3 != zero) {
86 a3 = (const int8_t*) ((uintptr_t) a3 + a_offset);
87 }
88 a += 4;
89
90 size_t k = kc;
91 do {
92 const int32_t va0 = (int32_t) *a0++;
93 const int32_t va1 = (int32_t) *a1++;
94 const int32_t va2 = (int32_t) *a2++;
95 const int32_t va3 = (int32_t) *a3++;
96
97 const int32_t vb0 = (int32_t) ((const int8_t*) w)[0];
98 const int32_t vb1 = (int32_t) ((const int8_t*) w)[1];
99 w = (const void*) ((const int8_t*) w + 2);
100
101 vacc0x0 += va0 * vb0;
102 vacc0x1 += va0 * vb1;
103 vacc1x0 += va1 * vb0;
104 vacc1x1 += va1 * vb1;
105 vacc2x0 += va2 * vb0;
106 vacc2x1 += va2 * vb1;
107 vacc3x0 += va3 * vb0;
108 vacc3x1 += va3 * vb1;
109
110 k -= sizeof(int8_t);
111 } while (k != 0);
112 p -= 4 * sizeof(void*);
113 } while (p != 0);
114
115 float vfpacc0x0 = (float) vacc0x0;
116 float vfpacc0x1 = (float) vacc0x1;
117 float vfpacc1x0 = (float) vacc1x0;
118 float vfpacc1x1 = (float) vacc1x1;
119 float vfpacc2x0 = (float) vacc2x0;
120 float vfpacc2x1 = (float) vacc2x1;
121 float vfpacc3x0 = (float) vacc3x0;
122 float vfpacc3x1 = (float) vacc3x1;
123
124 const float vscale = params->fp32_scalar_imagic.scale;
125 vfpacc0x0 *= vscale;
126 vfpacc0x1 *= vscale;
127 vfpacc1x0 *= vscale;
128 vfpacc1x1 *= vscale;
129 vfpacc2x0 *= vscale;
130 vfpacc2x1 *= vscale;
131 vfpacc3x0 *= vscale;
132 vfpacc3x1 *= vscale;
133
134 const float vmagic_bias = params->fp32_scalar_imagic.magic_bias;
135 vfpacc0x0 += vmagic_bias;
136 vfpacc0x1 += vmagic_bias;
137 vfpacc1x0 += vmagic_bias;
138 vfpacc1x1 += vmagic_bias;
139 vfpacc2x0 += vmagic_bias;
140 vfpacc2x1 += vmagic_bias;
141 vfpacc3x0 += vmagic_bias;
142 vfpacc3x1 += vmagic_bias;
143
144 int32_t vout0x0 = (int32_t) float_as_uint32(vfpacc0x0);
145 int32_t vout0x1 = (int32_t) float_as_uint32(vfpacc0x1);
146 int32_t vout1x0 = (int32_t) float_as_uint32(vfpacc1x0);
147 int32_t vout1x1 = (int32_t) float_as_uint32(vfpacc1x1);
148 int32_t vout2x0 = (int32_t) float_as_uint32(vfpacc2x0);
149 int32_t vout2x1 = (int32_t) float_as_uint32(vfpacc2x1);
150 int32_t vout3x0 = (int32_t) float_as_uint32(vfpacc3x0);
151 int32_t vout3x1 = (int32_t) float_as_uint32(vfpacc3x1);
152
153 const int32_t vmagic_min = params->fp32_scalar_imagic.magic_min;
154 vout0x0 = math_max_s32(vout0x0, vmagic_min);
155 vout0x1 = math_max_s32(vout0x1, vmagic_min);
156 vout1x0 = math_max_s32(vout1x0, vmagic_min);
157 vout1x1 = math_max_s32(vout1x1, vmagic_min);
158 vout2x0 = math_max_s32(vout2x0, vmagic_min);
159 vout2x1 = math_max_s32(vout2x1, vmagic_min);
160 vout3x0 = math_max_s32(vout3x0, vmagic_min);
161 vout3x1 = math_max_s32(vout3x1, vmagic_min);
162
163 const int32_t vmagic_max = params->fp32_scalar_imagic.magic_max;
164 vout0x0 = math_min_s32(vout0x0, vmagic_max);
165 vout0x1 = math_min_s32(vout0x1, vmagic_max);
166 vout1x0 = math_min_s32(vout1x0, vmagic_max);
167 vout1x1 = math_min_s32(vout1x1, vmagic_max);
168 vout2x0 = math_min_s32(vout2x0, vmagic_max);
169 vout2x1 = math_min_s32(vout2x1, vmagic_max);
170 vout3x0 = math_min_s32(vout3x0, vmagic_max);
171 vout3x1 = math_min_s32(vout3x1, vmagic_max);
172
173 const int32_t vmagic_bias_less_zero_point = params->fp32_scalar_imagic.magic_bias_less_zero_point;
174 vout0x0 -= vmagic_bias_less_zero_point;
175 vout0x1 -= vmagic_bias_less_zero_point;
176 vout1x0 -= vmagic_bias_less_zero_point;
177 vout1x1 -= vmagic_bias_less_zero_point;
178 vout2x0 -= vmagic_bias_less_zero_point;
179 vout2x1 -= vmagic_bias_less_zero_point;
180 vout3x0 -= vmagic_bias_less_zero_point;
181 vout3x1 -= vmagic_bias_less_zero_point;
182
183 if XNN_LIKELY(nc >= 2) {
184 c3[0] = (int8_t) vout3x0;
185 c3[1] = (int8_t) vout3x1;
186 c2[0] = (int8_t) vout2x0;
187 c2[1] = (int8_t) vout2x1;
188 c1[0] = (int8_t) vout1x0;
189 c1[1] = (int8_t) vout1x1;
190 c0[0] = (int8_t) vout0x0;
191 c0[1] = (int8_t) vout0x1;
192
193 c3 = (int8_t*) ((uintptr_t) c3 + cn_stride);
194 c2 = (int8_t*) ((uintptr_t) c2 + cn_stride);
195 c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
196 c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
197
198 a = (const int8_t**restrict) ((uintptr_t) a - ks);
199 nc -= 2;
200 } else {
201 if (nc & 1) {
202 c3[0] = (int8_t) vout3x0;
203 c2[0] = (int8_t) vout2x0;
204 c1[0] = (int8_t) vout1x0;
205 c0[0] = (int8_t) vout0x0;
206 }
207
208 nc = 0;
209 }
210 } while (nc != 0);
211 }
212