1 // Auto-generated file. Do not edit!
2 // Template: src/qs8-vlrelu/neon.c.in
3 // Generator: tools/xngen
4 //
5 // Copyright 2022 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/vlrelu.h>
16
17
xnn_qu8_vlrelu_ukernel__neon_x32(size_t n,const uint8_t * x,uint8_t * y,const union xnn_qu8_lrelu_params params[restrict XNN_MIN_ELEMENTS (1)])18 void xnn_qu8_vlrelu_ukernel__neon_x32(
19 size_t n,
20 const uint8_t* x,
21 uint8_t* y,
22 const union xnn_qu8_lrelu_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
23 {
24 assert(n != 0);
25 assert(n % sizeof(uint8_t) == 0);
26 assert(x != NULL);
27 assert(y != NULL);
28
29 const uint16x8_t vinput_zero_point = vld1q_dup_u16(¶ms->neon.input_zero_point);
30 const int16x8_t vpositive_multiplier = vld1q_dup_s16(¶ms->neon.positive_multiplier);
31 const int16x8_t vnegative_multiplier = vld1q_dup_s16(¶ms->neon.negative_multiplier);
32 const int16x8_t voutput_zero_point = vld1q_dup_s16(¶ms->neon.output_zero_point);
33 for (; n >= 32 * sizeof(uint8_t); n -= 32 * sizeof(uint8_t)) {
34 const uint8x16_t vx0 = vld1q_u8(x); x += 16;
35 const uint8x16_t vx1 = vld1q_u8(x); x += 16;
36
37 int16x8_t vacc0 = vreinterpretq_s16_u16(vsubw_u8(vinput_zero_point, vget_low_u8(vx0)));
38 int16x8_t vacc1 = vreinterpretq_s16_u16(vsubw_u8(vinput_zero_point, vget_high_u8(vx0)));
39 int16x8_t vacc2 = vreinterpretq_s16_u16(vsubw_u8(vinput_zero_point, vget_low_u8(vx1)));
40 int16x8_t vacc3 = vreinterpretq_s16_u16(vsubw_u8(vinput_zero_point, vget_high_u8(vx1)));
41
42 const uint16x8_t vmask0 = vcltq_s16(vacc0, vmovq_n_s16(0));
43 const uint16x8_t vmask1 = vcltq_s16(vacc1, vmovq_n_s16(0));
44 const uint16x8_t vmask2 = vcltq_s16(vacc2, vmovq_n_s16(0));
45 const uint16x8_t vmask3 = vcltq_s16(vacc3, vmovq_n_s16(0));
46
47 vacc0 = vshlq_n_s16(vacc0, 7);
48 vacc1 = vshlq_n_s16(vacc1, 7);
49 vacc2 = vshlq_n_s16(vacc2, 7);
50 vacc3 = vshlq_n_s16(vacc3, 7);
51
52 const int16x8_t vmultiplier0 = vbslq_s16(vmask0, vpositive_multiplier, vnegative_multiplier);
53 const int16x8_t vmultiplier1 = vbslq_s16(vmask1, vpositive_multiplier, vnegative_multiplier);
54 const int16x8_t vmultiplier2 = vbslq_s16(vmask2, vpositive_multiplier, vnegative_multiplier);
55 const int16x8_t vmultiplier3 = vbslq_s16(vmask3, vpositive_multiplier, vnegative_multiplier);
56
57 vacc0 = vqrdmulhq_s16(vacc0, vmultiplier0);
58 vacc1 = vqrdmulhq_s16(vacc1, vmultiplier1);
59 vacc2 = vqrdmulhq_s16(vacc2, vmultiplier2);
60 vacc3 = vqrdmulhq_s16(vacc3, vmultiplier3);
61
62 vacc0 = vqaddq_s16(vacc0, voutput_zero_point);
63 vacc1 = vqaddq_s16(vacc1, voutput_zero_point);
64 vacc2 = vqaddq_s16(vacc2, voutput_zero_point);
65 vacc3 = vqaddq_s16(vacc3, voutput_zero_point);
66
67 const uint8x16_t vy0 = vcombine_u8(vqmovun_s16(vacc0), vqmovun_s16(vacc1));
68 const uint8x16_t vy1 = vcombine_u8(vqmovun_s16(vacc2), vqmovun_s16(vacc3));
69
70 vst1q_u8(y, vy0); y += 16;
71 vst1q_u8(y, vy1); y += 16;
72 }
73 for (; n >= 8 * sizeof(uint8_t); n -= 8 * sizeof(uint8_t)) {
74 const uint8x8_t vx = vld1_u8(x); x += 8;
75 int16x8_t vacc = vreinterpretq_s16_u16(vsubw_u8(vinput_zero_point, vx));
76 const uint16x8_t vmask = vcltq_s16(vacc, vmovq_n_s16(0));
77 vacc = vshlq_n_s16(vacc, 7);
78 const int16x8_t vmultiplier = vbslq_s16(vmask, vpositive_multiplier, vnegative_multiplier);
79 vacc = vqrdmulhq_s16(vacc, vmultiplier);
80 vacc = vqaddq_s16(vacc, voutput_zero_point);
81 const uint8x8_t vy = vqmovun_s16(vacc);
82 vst1_u8(y, vy); y += 8;
83 }
84 if XNN_UNLIKELY(n != 0) {
85 assert(n >= 1 * sizeof(uint8_t));
86 assert(n <= 7 * sizeof(uint8_t));
87
88 const uint8x8_t vx = vld1_u8(x);
89 int16x8_t vacc = vreinterpretq_s16_u16(vsubw_u8(vinput_zero_point, vx));
90 const uint16x8_t vmask = vcltq_s16(vacc, vmovq_n_s16(0));
91 vacc = vshlq_n_s16(vacc, 7);
92 const int16x8_t vmultiplier = vbslq_s16(vmask, vpositive_multiplier, vnegative_multiplier);
93 vacc = vqrdmulhq_s16(vacc, vmultiplier);
94 vacc = vqaddq_s16(vacc, voutput_zero_point);
95 uint8x8_t vy = vqmovun_s16(vacc);
96
97 if (n & (4 * sizeof(uint8_t))) {
98 vst1_lane_u32((void*) y, vreinterpret_u32_u8(vy), 0); y += 4;
99 vy = vext_u8(vy, vy, 4);
100 }
101 if (n & (2 * sizeof(uint8_t))) {
102 vst1_lane_u16((void*) y, vreinterpret_u16_u8(vy), 0); y += 2;
103 vy = vext_u8(vy, vy, 2);
104 }
105 if (n & (1 * sizeof(uint8_t))) {
106 vst1_lane_u8(y, vy, 0);
107 }
108 }
109 }
110