1 // Auto-generated file. Do not edit!
2 // Template: src/f32-prelu/neon.c.in
3 // Generator: tools/xngen
4 //
5 // Copyright 2019 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/math.h>
15 #include <xnnpack/prelu.h>
16
17
xnn_f32_prelu_ukernel__neon_2x4(size_t rows,size_t channels,const float * restrict input,size_t input_stride,const float * restrict weights,float * restrict output,size_t output_stride)18 void xnn_f32_prelu_ukernel__neon_2x4(
19 size_t rows,
20 size_t channels,
21 const float*restrict input,
22 size_t input_stride,
23 const float*restrict weights,
24 float*restrict output,
25 size_t output_stride) XNN_OOB_READS
26 {
27 assert(rows != 0);
28 assert(channels != 0);
29 assert(channels % sizeof(float) == 0);
30
31 const float* i0 = input;
32 float* o0 = output;
33 const float* i1 = (const float*) ((uintptr_t) i0 + input_stride);
34 float* o1 = (float*) ((uintptr_t) o0 + output_stride);
35
36 const size_t input_increment = input_stride * 2 - channels;
37 const size_t output_increment = output_stride * 2 - channels;
38
39 do {
40 if XNN_UNPREDICTABLE(rows < 2) {
41 i1 = i0;
42 o1 = o0;
43 }
44
45 const float* w = weights;
46 size_t c = channels;
47 for (; c >= 4 * sizeof(float); c -= 4 * sizeof(float)) {
48 const float32x4_t vw0123 = vld1q_f32(w); w += 4;
49
50 const float32x4_t vi0x0123 = vld1q_f32(i0); i0 += 4;
51 const float32x4_t vi1x0123 = vld1q_f32(i1); i1 += 4;
52
53 float32x4_t vacc0x0123 = vmulq_f32(vi0x0123, vw0123);
54 const uint32x4_t vm0x0123 = vcltq_s32(vreinterpretq_s32_f32(vi0x0123), vmovq_n_s32(0));
55 float32x4_t vacc1x0123 = vmulq_f32(vi1x0123, vw0123);
56 const uint32x4_t vm1x0123 = vcltq_s32(vreinterpretq_s32_f32(vi1x0123), vmovq_n_s32(0));
57
58 vacc0x0123 = vbslq_f32(vm0x0123, vacc0x0123, vi0x0123);
59 vacc1x0123 = vbslq_f32(vm1x0123, vacc1x0123, vi1x0123);
60
61 vst1q_f32(o0, vacc0x0123); o0 += 4;
62 vst1q_f32(o1, vacc1x0123); o1 += 4;
63 }
64 if XNN_UNLIKELY(c != 0) {
65 const float32x4_t vw0123 = vld1q_f32(w); w += 4;
66
67 const float32x4_t vi0x0123 = vld1q_f32(i0);
68 i0 = (const float*) ((uintptr_t) i0 + c);
69 const float32x4_t vi1x0123 = vld1q_f32(i1);
70 i1 = (const float*) ((uintptr_t) i1 + c);
71
72 float32x4_t vacc0x0123 = vmulq_f32(vi0x0123, vw0123);
73 const uint32x4_t vm0x0123 = vcltq_s32(vreinterpretq_s32_f32(vi0x0123), vmovq_n_s32(0));
74 float32x4_t vacc1x0123 = vmulq_f32(vi1x0123, vw0123);
75 const uint32x4_t vm1x0123 = vcltq_s32(vreinterpretq_s32_f32(vi1x0123), vmovq_n_s32(0));
76
77 vacc0x0123 = vbslq_f32(vm0x0123, vacc0x0123, vi0x0123);
78 vacc1x0123 = vbslq_f32(vm1x0123, vacc1x0123, vi1x0123);
79
80 float32x2_t vacc0x01 = vget_low_f32(vacc0x0123);
81 float32x2_t vacc1x01 = vget_low_f32(vacc1x0123);
82 if (c & (2 * sizeof(float))) {
83 vst1_f32(o0, vacc0x01); o0 += 2;
84 vst1_f32(o1, vacc1x01); o1 += 2;
85
86 vacc0x01 = vget_high_f32(vacc0x0123);
87 vacc1x01 = vget_high_f32(vacc1x0123);
88 }
89 if (c & (1 * sizeof(float))) {
90 vst1_lane_f32(o0, vacc0x01, 0); o0 += 1;
91 vst1_lane_f32(o1, vacc1x01, 0); o1 += 1;
92 }
93 }
94 i0 = (const float*) ((uintptr_t) i0 + input_increment);
95 o0 = (float*) ((uintptr_t) o0 + output_increment);
96 i1 = (const float*) ((uintptr_t) i1 + input_increment);
97 o1 = (float*) ((uintptr_t) o1 + output_increment);
98 rows = doz(rows, 2);
99 } while (rows != 0);
100 }
101