1 // Auto-generated file. Do not edit!
2 // Template: src/f32-dwconv2d-chw/3x3s2p1-neon.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 <arm_neon.h>
13
14 #include <xnnpack/dwconv.h>
15 #include <xnnpack/math.h>
16
17
xnn_f32_dwconv2d_chw_ukernel_3x3s2p1__neon_1x4(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)])18 void xnn_f32_dwconv2d_chw_ukernel_3x3s2p1__neon_1x4(
19 size_t input_height,
20 size_t input_width,
21 const float* input,
22 const float* weights,
23 const float* zero,
24 float* output,
25 uint32_t padding_top,
26 const union xnn_f32_chw_params params[restrict XNN_MIN_ELEMENTS(1)])
27 {
28 assert(input_height != 0);
29 assert(input_width != 0);
30 assert(input_width % sizeof(float) == 0);
31 assert(padding_top >= 0);
32 assert(padding_top <= 1);
33
34 const uint32x4_t vmask_even = vld1q_u32(params->neon.mask_even);
35 const uint32x4_t vmask_odd = vld1q_u32(params->neon.mask_odd);
36 const float32x4_t vmax = vld1q_dup_f32(¶ms->neon.max);
37 const float32x4_t vmin = vld1q_dup_f32(¶ms->neon.min);
38
39 const float32x4_t vw0123 = vld1q_f32(weights);
40 const float32x4_t vw4567 = vld1q_f32(weights + 4);
41 const float32x2_t vw89 = vld1_f32(weights + 8);
42
43 const size_t input_decrement = round_down_po2(input_width, 4 /* SIMD output width */ * 2 /* subsampling */ * sizeof(float));
44
45 const float* i0 = (const float*) ((uintptr_t) input - ((-padding_top) & input_width));
46 const float* i1 = (const float*) ((uintptr_t) i0 + input_width);
47 if XNN_UNPREDICTABLE(padding_top != 0) {
48 i0 = zero;
49 }
50 const float* i2 = (const float*) ((uintptr_t) i1 + input_width);
51
52 float* o0 = output;
53
54 size_t padded_input_height = input_height + padding_top + 1 /* padding bottom */;
55 size_t output_height = (padded_input_height - 3 /* kernel size */ + 2 /* subsampling */) / 2;
56 do {
57 if XNN_UNPREDICTABLE(padded_input_height < 4) {
58 i2 = zero;
59 }
60
61 float32x4_t vi0x1357 = vmovq_n_f32(0.0f);
62 float32x4_t vi1x1357 = vmovq_n_f32(0.0f);
63 float32x4_t vi2x1357 = vmovq_n_f32(0.0f);
64
65 size_t w = input_width;
66 for (; w >= 8 * sizeof(float); w -= 8 * sizeof(float)) {
67 float32x4_t vo0p0 = vdupq_lane_f32(vget_low_f32(vw0123), 0);
68
69 const float32x4x2_t vi0x8ACE9BDF = vld2q_f32(i0); i0 += 8;
70 const float32x4x2_t vi1x8ACE9BDF = vld2q_f32(i1); i1 += 8;
71 const float32x4x2_t vi2x8ACE9BDF = vld2q_f32(i2); i2 += 8;
72
73 vo0p0 = vmlaq_lane_f32(vo0p0, vi0x8ACE9BDF.val[0], vget_high_f32(vw0123), 0);
74
75 vo0p0 = vmlaq_lane_f32(vo0p0, vi1x8ACE9BDF.val[0], vget_low_f32(vw4567), 1);
76
77 vo0p0 = vmlaq_lane_f32(vo0p0, vi2x8ACE9BDF.val[0], vw89, 0);
78
79 const float32x4_t vi0x7BDF = vextq_f32(vi0x1357, vi0x8ACE9BDF.val[1], 3);
80 vi0x1357 = vi0x8ACE9BDF.val[1];
81 const float32x4_t vi1x7BDF = vextq_f32(vi1x1357, vi1x8ACE9BDF.val[1], 3);
82 vi1x1357 = vi1x8ACE9BDF.val[1];
83 const float32x4_t vi2x7BDF = vextq_f32(vi2x1357, vi2x8ACE9BDF.val[1], 3);
84 vi2x1357 = vi2x8ACE9BDF.val[1];
85
86 vo0p0 = vmlaq_lane_f32(vo0p0, vi0x7BDF, vget_low_f32(vw0123), 1);
87
88 vo0p0 = vmlaq_lane_f32(vo0p0, vi1x7BDF, vget_low_f32(vw4567), 0);
89
90 vo0p0 = vmlaq_lane_f32(vo0p0, vi2x7BDF, vget_high_f32(vw4567), 1);
91
92 vo0p0 = vmlaq_lane_f32(vo0p0, vi0x8ACE9BDF.val[1], vget_high_f32(vw0123), 1);
93
94 vo0p0 = vmlaq_lane_f32(vo0p0, vi1x8ACE9BDF.val[1], vget_high_f32(vw4567), 0);
95
96 vo0p0 = vmlaq_lane_f32(vo0p0, vi2x8ACE9BDF.val[1], vw89, 1);
97
98
99 float32x4_t vo0 = vmaxq_f32(vo0p0, vmin);
100
101 vo0 = vminq_f32(vo0, vmax);
102
103 vst1q_f32(o0, vo0); o0 += 4;
104 }
105 // Last block has 0-7 pixels to process.
106 assert(w < 8 * sizeof(float));
107 if XNN_LIKELY(w != 0) {
108 float32x4_t vo0p0 = vdupq_lane_f32(vget_low_f32(vw0123), 0);
109
110 const float32x4x2_t vi0x8ACE9BDF = vld2q_f32(i0);
111 const float32x4x2_t vi1x8ACE9BDF = vld2q_f32(i1);
112 const float32x4x2_t vi2x8ACE9BDF = vld2q_f32(i2);
113
114 const float32x4_t vi0x8ACE = vreinterpretq_f32_u32(vandq_u32(vmask_even, vreinterpretq_u32_f32(vi0x8ACE9BDF.val[0])));
115 const float32x4_t vi0x9BDF = vreinterpretq_f32_u32(vandq_u32(vmask_odd, vreinterpretq_u32_f32(vi0x8ACE9BDF.val[1])));
116 const float32x4_t vi1x8ACE = vreinterpretq_f32_u32(vandq_u32(vmask_even, vreinterpretq_u32_f32(vi1x8ACE9BDF.val[0])));
117 const float32x4_t vi1x9BDF = vreinterpretq_f32_u32(vandq_u32(vmask_odd, vreinterpretq_u32_f32(vi1x8ACE9BDF.val[1])));
118 const float32x4_t vi2x8ACE = vreinterpretq_f32_u32(vandq_u32(vmask_even, vreinterpretq_u32_f32(vi2x8ACE9BDF.val[0])));
119 const float32x4_t vi2x9BDF = vreinterpretq_f32_u32(vandq_u32(vmask_odd, vreinterpretq_u32_f32(vi2x8ACE9BDF.val[1])));
120
121 vo0p0 = vmlaq_lane_f32(vo0p0, vi0x8ACE, vget_high_f32(vw0123), 0);
122
123 vo0p0 = vmlaq_lane_f32(vo0p0, vi1x8ACE, vget_low_f32(vw4567), 1);
124
125 vo0p0 = vmlaq_lane_f32(vo0p0, vi2x8ACE, vw89, 0);
126
127 const float32x4_t vi0x7BDF = vextq_f32(vi0x1357, vi0x9BDF, 3);
128 const float32x4_t vi1x7BDF = vextq_f32(vi1x1357, vi1x9BDF, 3);
129 const float32x4_t vi2x7BDF = vextq_f32(vi2x1357, vi2x9BDF, 3);
130
131 vo0p0 = vmlaq_lane_f32(vo0p0, vi0x7BDF, vget_low_f32(vw0123), 1);
132
133 vo0p0 = vmlaq_lane_f32(vo0p0, vi1x7BDF, vget_low_f32(vw4567), 0);
134
135 vo0p0 = vmlaq_lane_f32(vo0p0, vi2x7BDF, vget_high_f32(vw4567), 1);
136
137 vo0p0 = vmlaq_lane_f32(vo0p0, vi0x9BDF, vget_high_f32(vw0123), 1);
138
139 vo0p0 = vmlaq_lane_f32(vo0p0, vi1x9BDF, vget_high_f32(vw4567), 0);
140
141 vo0p0 = vmlaq_lane_f32(vo0p0, vi2x9BDF, vw89, 1);
142
143
144 float32x4_t vo0 = vmaxq_f32(vo0p0, vmin);
145
146 vo0 = vminq_f32(vo0, vmax);
147
148 w += 1 * sizeof(float);
149 if (w & (8 * sizeof(float))) {
150 vst1q_f32(o0, vo0); o0 += 4;
151 } else {
152 float32x2_t vo0_lo = vget_low_f32(vo0);
153 if (w & (4 * sizeof(float))) {
154 vst1_f32(o0, vo0_lo); o0 += 2;
155
156 vo0_lo = vget_high_f32(vo0);
157 }
158 if (w & (2 * sizeof(float))) {
159 vst1_lane_f32(o0, vo0_lo, 0); o0 += 1;
160 }
161 }
162 }
163
164 i0 = (const float*) ((uintptr_t) i2 - input_decrement);
165 i1 = (const float*) ((uintptr_t) i0 + input_width);
166 i2 = (const float*) ((uintptr_t) i1 + input_width);
167
168
169 output_height -= 1;
170 padded_input_height -= 2;
171 } while (output_height != 0);
172 }
173