1 // Auto-generated file. Do not edit!
2 // Template: src/f32-hswish/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/common.h>
15 #include <xnnpack/vbinary.h>
16
17
xnn_f32_hswish_ukernel__neonfma_x8(size_t n,const float * x,float * y,const union xnn_f32_hswish_params params[restrict static1])18 void xnn_f32_hswish_ukernel__neonfma_x8(
19 size_t n,
20 const float* x,
21 float* y,
22 const union xnn_f32_hswish_params params[restrict static 1])
23 {
24 assert(n != 0);
25 assert(n % sizeof(float) == 0);
26
27 const float32x4_t vsixth = vld1q_dup_f32(¶ms->scalar.sixth);
28 const float32x4_t vhalf = vld1q_dup_f32(¶ms->scalar.half);
29 const float32x4_t vone = vld1q_dup_f32(¶ms->scalar.one);
30 const float32x4_t vzero = vdupq_n_f32(0.0f);
31
32 for (; n >= 8 * sizeof(float); n -= 8 * sizeof(float)) {
33 const float32x4_t vx0123 = vld1q_f32(x); x += 4;
34 const float32x4_t vx4567 = vld1q_f32(x); x += 4;
35
36 float32x4_t vacc0123 = vfmaq_f32(vhalf, vx0123, vsixth);
37 float32x4_t vacc4567 = vfmaq_f32(vhalf, vx4567, vsixth);
38
39 vacc0123 = vmaxq_f32(vacc0123, vzero);
40 vacc4567 = vmaxq_f32(vacc4567, vzero);
41
42 vacc0123 = vminq_f32(vacc0123, vone);
43 vacc4567 = vminq_f32(vacc4567, vone);
44
45 vacc0123 = vmulq_f32(vacc0123, vx0123);
46 vacc4567 = vmulq_f32(vacc4567, vx4567);
47
48 vst1q_f32(y, vacc0123); y += 4;
49 vst1q_f32(y, vacc4567); y += 4;
50 }
51 for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) {
52 const float32x4_t vx0123 = vld1q_f32(x); x += 4;
53 float32x4_t vacc0123 = vfmaq_f32(vhalf, vx0123, vsixth);
54 vacc0123 = vmaxq_f32(vacc0123, vzero);
55 vacc0123 = vminq_f32(vacc0123, vone);
56 vacc0123 = vmulq_f32(vacc0123, vx0123);
57 vst1q_f32(y, vacc0123); y += 4;
58 }
59 if XNN_UNLIKELY(n != 0) {
60 const float32x4_t vx0123 = vld1q_f32(x);
61 float32x4_t vacc0123 = vfmaq_f32(vhalf, vx0123, vsixth);
62 vacc0123 = vmaxq_f32(vacc0123, vzero);
63 vacc0123 = vminq_f32(vacc0123, vone);
64 vacc0123 = vmulq_f32(vacc0123, vx0123);
65
66 float32x2_t vacc01 = vget_low_f32(vacc0123);
67 if (n & (2 * sizeof(float))) {
68 vst1_f32(y, vacc01); y += 2;
69 vacc01 = vget_high_f32(vacc0123);
70 }
71 if (n & (1 * sizeof(float))) {
72 vst1_lane_f32(y, vacc01, 0);
73 }
74 }
75 }
76