1 // Auto-generated file. Do not edit!
2 // Template: src/f32-dwconv2d-chw/3x3s2p1-scalar.c.in
3 // Generator: tools/xngen
4 //
5 // Copyright 2020 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/dwconv.h>
13 #include <xnnpack/math.h>
14
15
xnn_f32_dwconv2d_chw_ukernel_3x3s2p1__scalar_2x1(size_t input_height,size_t input_width,const float * input,const float * weights,const float * zero,float * output,uint32_t padding_top,const union xnn_f32_chw_params params[restrict XNN_MIN_ELEMENTS (1)])16 void xnn_f32_dwconv2d_chw_ukernel_3x3s2p1__scalar_2x1(
17 size_t input_height,
18 size_t input_width,
19 const float* input,
20 const float* weights,
21 const float* zero,
22 float* output,
23 uint32_t padding_top,
24 const union xnn_f32_chw_params params[restrict XNN_MIN_ELEMENTS(1)])
25 {
26 assert(input_height != 0);
27 assert(input_width != 0);
28 assert(input_width % sizeof(float) == 0);
29 assert(padding_top >= 0);
30 assert(padding_top <= 1);
31
32 const float vmin = params->scalar.min;
33 const float vmax = params->scalar.max;
34
35 const float vbias = weights[0];
36 const float vk00 = weights[1];
37 const float vk01 = weights[2];
38 const float vk02 = weights[3];
39 const float vk10 = weights[4];
40 const float vk11 = weights[5];
41 const float vk12 = weights[6];
42 const float vk20 = weights[7];
43 const float vk21 = weights[8];
44 const float vk22 = weights[9];
45
46 const size_t output_width = round_down_po2((input_width + (2 /* padding */ - 3 /* kernel size */ + 2 /* subsampling */) * sizeof(float)) / 2, sizeof(float));
47
48 const float* i0 = (const float*) ((uintptr_t) input - ((-padding_top) & input_width));
49 const float* i1 = (const float*) ((uintptr_t) i0 + input_width);
50 if XNN_UNPREDICTABLE(padding_top != 0) {
51 i0 = zero;
52 }
53 const float* i2 = (const float*) ((uintptr_t) i1 + input_width);
54 const float* i3 = (const float*) ((uintptr_t) i2 + input_width);
55 const float* i4 = (const float*) ((uintptr_t) i3 + input_width);
56
57 float* o0 = output;
58 float* o1 = (float*) ((uintptr_t) o0 + output_width);
59
60 size_t padded_input_height = input_height + padding_top + 1 /* padding bottom */;
61 size_t output_height = (padded_input_height - 3 /* kernel size */ + 2 /* subsampling */) / 2;
62 do {
63 if XNN_UNPREDICTABLE(padded_input_height < 4) {
64 i2 = zero;
65 }
66 if XNN_UNPREDICTABLE(padded_input_height < 5) {
67 i3 = zero;
68 o1 = o0;
69 }
70 if XNN_UNPREDICTABLE(padded_input_height < 6) {
71 i4 = zero;
72 }
73
74 float vi0x0 = 0.0f;
75 float vi1x0 = 0.0f;
76 float vi2x0 = 0.0f;
77 float vi3x0 = 0.0f;
78 float vi4x0 = 0.0f;
79
80 size_t w = input_width;
81 for (; w >= 2 * sizeof(float); w -= 2 * sizeof(float)) {
82 const float vi0x1 = i0[0];
83 const float vi1x1 = i1[0];
84 const float vi2x1 = i2[0];
85 const float vi3x1 = i3[0];
86 const float vi4x1 = i4[0];
87
88 float vo0p0 = vbias + vi0x0 * vk00;
89 float vo1p0 = vbias + vi2x0 * vk00;
90 vo0p0 += vi1x0 * vk10;
91 vo1p0 += vi3x0 * vk10;
92 vo0p0 += vi2x0 * vk20;
93 vo1p0 += vi4x0 * vk20;
94
95 const float vi0x2 = i0[1];
96 i0 += 2;
97 const float vi1x2 = i1[1];
98 i1 += 2;
99 const float vi2x2 = i2[1];
100 i2 += 2;
101 const float vi3x2 = i3[1];
102 i3 += 2;
103 const float vi4x2 = i4[1];
104 i4 += 2;
105
106 vo0p0 += vi0x1 * vk01;
107 vo1p0 += vi2x1 * vk01;
108 vo0p0 += vi1x1 * vk11;
109 vo1p0 += vi3x1 * vk11;
110 vo0p0 += vi2x1 * vk21;
111 vo1p0 += vi4x1 * vk21;
112
113 vi0x0 = vi0x2;
114 vi1x0 = vi1x2;
115 vi2x0 = vi2x2;
116 vi3x0 = vi3x2;
117 vi4x0 = vi4x2;
118
119 vo0p0 += vi0x2 * vk02;
120 vo1p0 += vi2x2 * vk02;
121 vo0p0 += vi1x2 * vk12;
122 vo1p0 += vi3x2 * vk12;
123 vo0p0 += vi2x2 * vk22;
124 vo1p0 += vi4x2 * vk22;
125
126
127 float vo0 = math_max_f32(vo0p0, vmin);
128 float vo1 = math_max_f32(vo1p0, vmin);
129
130 vo0 = math_min_f32(vo0, vmax);
131 vo1 = math_min_f32(vo1, vmax);
132
133 *o1++ = vo1;
134 *o0++ = vo0;
135 }
136 // Potentially process the last pixel.
137 assert(w <= 1 * sizeof(float));
138 if (w != 0) {
139 const float vi0x1 = *i0++;
140 const float vi1x1 = *i1++;
141 const float vi2x1 = *i2++;
142 const float vi3x1 = *i3++;
143 const float vi4x1 = *i4++;
144
145 float vo0p0 = vbias + vi0x0 * vk00;
146 float vo1p0 = vbias + vi2x0 * vk00;
147 vo0p0 += vi1x0 * vk10;
148 vo1p0 += vi3x0 * vk10;
149 vo0p0 += vi2x0 * vk20;
150 vo1p0 += vi4x0 * vk20;
151
152 vo0p0 += vi0x1 * vk01;
153 vo1p0 += vi2x1 * vk01;
154 vo0p0 += vi1x1 * vk11;
155 vo1p0 += vi3x1 * vk11;
156 vo0p0 += vi2x1 * vk21;
157 vo1p0 += vi4x1 * vk21;
158
159
160 float vo0 = math_max_f32(vo0p0, vmin);
161 float vo1 = math_max_f32(vo1p0, vmin);
162
163 vo0 = math_min_f32(vo0, vmax);
164 vo1 = math_min_f32(vo1, vmax);
165
166 *o1++ = vo1;
167 *o0++ = vo0;
168 }
169
170 i0 = (const float*) ((uintptr_t) i3);
171 i1 = (const float*) ((uintptr_t) i4);
172 i2 = (const float*) ((uintptr_t) i1 + input_width);
173 i3 = (const float*) ((uintptr_t) i2 + input_width);
174 i4 = (const float*) ((uintptr_t) i3 + input_width);
175
176 o0 = o1;
177 o1 = (float*) ((uintptr_t) o0 + output_width);
178
179 output_height = doz(output_height, 2);
180 padded_input_height = doz(padded_input_height, 4);
181 } while (output_height != 0);
182 }
183