1 // Auto-generated file. Do not edit!
2 // Template: src/f32-clamp/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/clamp.h>
15 #include <xnnpack/common.h>
16
17
xnn_f32_clamp_ukernel__neon_x8(size_t n,const float * x,float * y,const union xnn_f32_minmax_params params[restrict XNN_MIN_ELEMENTS (1)])18 void xnn_f32_clamp_ukernel__neon_x8(
19 size_t n,
20 const float* x,
21 float* y,
22 const union xnn_f32_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN
23 {
24 assert(n != 0);
25 assert(n % sizeof(float) == 0);
26 assert(x != NULL);
27 assert(y != NULL);
28
29 const float32x4_t vy_min = vld1q_dup_f32(¶ms->scalar.min);
30 const float32x4_t vy_max = vld1q_dup_f32(¶ms->scalar.max);
31
32 for (; n >= 8 * sizeof(float); n -= 8 * sizeof(float)) {
33 float32x4_t vacc0123 = vld1q_f32(x); x += 4;
34 float32x4_t vacc4567 = vld1q_f32(x); x += 4;
35
36 vacc0123 = vmaxq_f32(vacc0123, vy_min);
37 vacc4567 = vmaxq_f32(vacc4567, vy_min);
38
39 vacc0123 = vminq_f32(vacc0123, vy_max);
40 vacc4567 = vminq_f32(vacc4567, vy_max);
41
42 vst1q_f32(y, vacc0123); y += 4;
43 vst1q_f32(y, vacc4567); y += 4;
44 }
45 for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) {
46 float32x4_t vacc = vld1q_f32(x); x += 4;
47 vacc = vmaxq_f32(vacc, vy_min);
48 vacc = vminq_f32(vacc, vy_max);
49 vst1q_f32(y, vacc); y += 4;
50 }
51 if XNN_UNLIKELY(n != 0) {
52 float32x4_t vacc = vld1q_f32(x);
53 vacc = vmaxq_f32(vacc, vy_min);
54 vacc = vminq_f32(vacc, vy_max);
55
56 float32x2_t vacc_lo = vget_low_f32(vacc);
57 if (n & (2 * sizeof(float))) {
58 vst1_f32(y, vacc_lo); y += 2;
59 vacc_lo = vget_high_f32(vacc);
60 }
61 if (n & (1 * sizeof(float))) {
62 vst1_lane_f32(y, vacc_lo, 0);
63 }
64 }
65 }
66