1 // Copyright 2022 Google LLC
2 //
3 // This source code is licensed under the BSD-style license found in the
4 // LICENSE file in the root directory of this source tree.
5
6 #include <assert.h>
7
8 #include <arm_neon.h>
9
10 #include <xnnpack/pavgpool.h>
11
12
xnn_f16_pavgpool_minmax_ukernel_9x__neonfp16arith_c8(size_t output_pixels,size_t kernel_elements,size_t channels,const void ** input,size_t input_offset,const void * zero,const void * multiplier,void * output,size_t input_increment,size_t output_increment,const union xnn_f16_minmax_params params[restrict XNN_MIN_ELEMENTS (1)])13 void xnn_f16_pavgpool_minmax_ukernel_9x__neonfp16arith_c8(
14 size_t output_pixels,
15 size_t kernel_elements,
16 size_t channels,
17 const void** input,
18 size_t input_offset,
19 const void* zero,
20 const void* multiplier,
21 void* output,
22 size_t input_increment,
23 size_t output_increment,
24 const union xnn_f16_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
25 {
26 assert(output_pixels != 0);
27 assert(kernel_elements != 0);
28 assert(kernel_elements <= 9);
29 assert(channels != 0);
30
31 const float16x8_t voutput_min = vreinterpretq_f16_u16(vld1q_dup_u16(¶ms->neon.min));
32 const float16x8_t voutput_max = vreinterpretq_f16_u16(vld1q_dup_u16(¶ms->neon.max));
33
34 do {
35 const __fp16* i0 = (const __fp16*) input[0];
36 assert(i0 != NULL);
37 const __fp16* i1 = (const __fp16*) input[1];
38 const __fp16* i2 = (const __fp16*) input[2];
39 const __fp16* i3 = (const __fp16*) input[3];
40 const __fp16* i4 = (const __fp16*) input[4];
41 const __fp16* i5 = (const __fp16*) input[5];
42 const __fp16* i6 = (const __fp16*) input[6];
43 const __fp16* i7 = (const __fp16*) input[7];
44 const __fp16* i8 = (const __fp16*) input[8];
45 input = (const void**) ((uintptr_t) input + input_increment);
46 if (kernel_elements < 2) {
47 i1 = (const __fp16*) zero;
48 }
49 assert(i1 != NULL);
50 if (kernel_elements <= 2) {
51 i2 = (const __fp16*) zero;
52 }
53 assert(i2 != NULL);
54 if (kernel_elements < 4) {
55 i3 = (const __fp16*) zero;
56 }
57 assert(i3 != NULL);
58 if (kernel_elements <= 4) {
59 i4 = (const __fp16*) zero;
60 }
61 assert(i4 != NULL);
62 if (kernel_elements < 6) {
63 i5 = (const __fp16*) zero;
64 }
65 assert(i5 != NULL);
66 if (kernel_elements <= 6) {
67 i6 = (const __fp16*) zero;
68 }
69 assert(i6 != NULL);
70 if (kernel_elements < 8) {
71 i7 = (const __fp16*) zero;
72 }
73 assert(i7 != NULL);
74 if (kernel_elements <= 8) {
75 i8 = (const __fp16*) zero;
76 }
77 assert(i8 != NULL);
78 if XNN_UNPREDICTABLE(i0 != zero) {
79 i0 = (const __fp16*) ((uintptr_t) i0 + input_offset);
80 }
81 if XNN_UNPREDICTABLE(i1 != zero) {
82 i1 = (const __fp16*) ((uintptr_t) i1 + input_offset);
83 }
84 if XNN_UNPREDICTABLE(i2 != zero) {
85 i2 = (const __fp16*) ((uintptr_t) i2 + input_offset);
86 }
87 if XNN_UNPREDICTABLE(i3 != zero) {
88 i3 = (const __fp16*) ((uintptr_t) i3 + input_offset);
89 }
90 if XNN_UNPREDICTABLE(i4 != zero) {
91 i4 = (const __fp16*) ((uintptr_t) i4 + input_offset);
92 }
93 if XNN_UNPREDICTABLE(i5 != zero) {
94 i5 = (const __fp16*) ((uintptr_t) i5 + input_offset);
95 }
96 if XNN_UNPREDICTABLE(i6 != zero) {
97 i6 = (const __fp16*) ((uintptr_t) i6 + input_offset);
98 }
99 if XNN_UNPREDICTABLE(i7 != zero) {
100 i7 = (const __fp16*) ((uintptr_t) i7 + input_offset);
101 }
102 if XNN_UNPREDICTABLE(i8 != zero) {
103 i8 = (const __fp16*) ((uintptr_t) i8 + input_offset);
104 }
105
106 const float16x8_t vmultiplier = vld1q_dup_f16(multiplier); multiplier = (const __fp16*) multiplier + 1;
107
108 size_t c = channels;
109 while (c >= 8) {
110 const float16x8_t vi0 = vld1q_f16(i0); i0 += 8;
111 const float16x8_t vi1 = vld1q_f16(i1); i1 += 8;
112 const float16x8_t vi2 = vld1q_f16(i2); i2 += 8;
113 const float16x8_t vi3 = vld1q_f16(i3); i3 += 8;
114 const float16x8_t vi4 = vld1q_f16(i4); i4 += 8;
115 const float16x8_t vi5 = vld1q_f16(i5); i5 += 8;
116 const float16x8_t vi6 = vld1q_f16(i6); i6 += 8;
117 const float16x8_t vi7 = vld1q_f16(i7); i7 += 8;
118 const float16x8_t vi8 = vld1q_f16(i8); i8 += 8;
119
120 const float16x8_t vsum01 = vaddq_f16(vi0, vi1);
121 const float16x8_t vsum23 = vaddq_f16(vi2, vi3);
122 const float16x8_t vsum45 = vaddq_f16(vi4, vi5);
123 const float16x8_t vsum67 = vaddq_f16(vi6, vi7);
124 const float16x8_t vsum018 = vaddq_f16(vsum01, vi8);
125 const float16x8_t vsum2345 = vaddq_f16(vsum23, vsum45);
126 const float16x8_t vsum01678 = vaddq_f16(vsum018, vsum67);
127 const float16x8_t vsum = vaddq_f16(vsum2345, vsum01678);
128
129 float16x8_t vout = vmulq_f16(vsum, vmultiplier);
130 vout = vmaxq_f16(vout, voutput_min);
131 vout = vminq_f16(vout, voutput_max);
132
133 vst1q_f16(output, vout); output = (__fp16*) output + 8;
134
135 c -= 8;
136 }
137 if (c != 0) {
138 const float16x8_t vi0 = vld1q_f16(i0);
139 const float16x8_t vi1 = vld1q_f16(i1);
140 const float16x8_t vi2 = vld1q_f16(i2);
141 const float16x8_t vi3 = vld1q_f16(i3);
142 const float16x8_t vi4 = vld1q_f16(i4);
143 const float16x8_t vi5 = vld1q_f16(i5);
144 const float16x8_t vi6 = vld1q_f16(i6);
145 const float16x8_t vi7 = vld1q_f16(i7);
146 const float16x8_t vi8 = vld1q_f16(i8);
147
148 const float16x8_t vsum01 = vaddq_f16(vi0, vi1);
149 const float16x8_t vsum23 = vaddq_f16(vi2, vi3);
150 const float16x8_t vsum45 = vaddq_f16(vi4, vi5);
151 const float16x8_t vsum67 = vaddq_f16(vi6, vi7);
152 const float16x8_t vsum018 = vaddq_f16(vsum01, vi8);
153 const float16x8_t vsum2345 = vaddq_f16(vsum23, vsum45);
154 const float16x8_t vsum01678 = vaddq_f16(vsum018, vsum67);
155 const float16x8_t vsum = vaddq_f16(vsum2345, vsum01678);
156
157 float16x8_t vout = vmulq_f16(vsum, vmultiplier);
158 vout = vmaxq_f16(vout, voutput_min);
159 vout = vminq_f16(vout, voutput_max);
160
161 float16x4_t vout_lo = vget_low_f16(vout);
162 if (c & 4) {
163 vst1_f16(output, vout_lo); output = (__fp16*) output + 4;
164 vout_lo = vget_high_f16(vout);
165 }
166 if (c & 2) {
167 vst1_lane_u32(output, vreinterpret_u32_f16(vout_lo), 0); output = (__fp16*) output + 2;
168 vout_lo = vext_f16(vout_lo, vout_lo, 2);
169 }
170 if (c & 1) {
171 vst1_lane_f16(output, vout_lo, 0); output = (__fp16*) output + 1;
172 }
173 }
174 output = (void*) ((uintptr_t) output + output_increment);
175 } while (--output_pixels != 0);
176 }
177