1 // Auto-generated file. Do not edit!
2 // Template: src/f32-vsigmoid/neon-p5.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/vunary.h>
16
17
xnn_f32_vsigmoid_ukernel__neonfma_rr1_p5_div_x12(size_t n,const float * x,float * y,const union xnn_f32_sigmoid_params params[restrict XNN_MIN_ELEMENTS (1)])18 void xnn_f32_vsigmoid_ukernel__neonfma_rr1_p5_div_x12(
19 size_t n,
20 const float* x,
21 float* y,
22 const union xnn_f32_sigmoid_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
23 {
24 assert(n % sizeof(float) == 0);
25
26 const float32x4_t vmagic_bias = vld1q_dup_f32(¶ms->neonfma_rr1_p5.magic_bias);
27 const float32x4_t vminus_log2e = vld1q_dup_f32(¶ms->neonfma_rr1_p5.minus_log2e);
28 const float32x4_t vln2 = vld1q_dup_f32(¶ms->neonfma_rr1_p5.ln2);
29 const float32x4_t vc5 = vld1q_dup_f32(¶ms->neonfma_rr1_p5.c5);
30 const float32x4_t vc4 = vld1q_dup_f32(¶ms->neonfma_rr1_p5.c4);
31 const float32x4_t vc3 = vld1q_dup_f32(¶ms->neonfma_rr1_p5.c3);
32 const float32x4_t vc2 = vld1q_dup_f32(¶ms->neonfma_rr1_p5.c2);
33 const float32x4_t vc1 = vld1q_dup_f32(¶ms->neonfma_rr1_p5.c1);
34 const float32x4_t vone = vmovq_n_f32(1.0f);
35 const float32x4_t vdenorm_cutoff = vld1q_dup_f32(¶ms->neonfma_rr1_p5.denorm_cutoff);
36
37 for (; n >= 12 * sizeof(float); n -= 12 * sizeof(float)) {
38 const float32x4_t vx0123 = vld1q_f32(x); x += 4;
39 const float32x4_t vx4567 = vld1q_f32(x); x += 4;
40 const float32x4_t vx89AB = vld1q_f32(x); x += 4;
41
42 const float32x4_t vz0123 = vabsq_f32(vx0123);
43 const float32x4_t vz4567 = vabsq_f32(vx4567);
44 const float32x4_t vz89AB = vabsq_f32(vx89AB);
45
46 float32x4_t vn0123 = vfmaq_f32(vmagic_bias, vz0123, vminus_log2e);
47 float32x4_t vn4567 = vfmaq_f32(vmagic_bias, vz4567, vminus_log2e);
48 float32x4_t vn89AB = vfmaq_f32(vmagic_bias, vz89AB, vminus_log2e);
49
50 const float32x4_t vs0123 = vreinterpretq_f32_s32(vshlq_n_s32(vreinterpretq_s32_f32(vn0123), 23));
51 const float32x4_t vs4567 = vreinterpretq_f32_s32(vshlq_n_s32(vreinterpretq_s32_f32(vn4567), 23));
52 const float32x4_t vs89AB = vreinterpretq_f32_s32(vshlq_n_s32(vreinterpretq_s32_f32(vn89AB), 23));
53
54 vn0123 = vsubq_f32(vn0123, vmagic_bias);
55 vn4567 = vsubq_f32(vn4567, vmagic_bias);
56 vn89AB = vsubq_f32(vn89AB, vmagic_bias);
57
58 float32x4_t vt0123 = vfmaq_f32(vz0123, vn0123, vln2);
59 float32x4_t vt4567 = vfmaq_f32(vz4567, vn4567, vln2);
60 float32x4_t vt89AB = vfmaq_f32(vz89AB, vn89AB, vln2);
61
62 float32x4_t vp0123 = vfmaq_f32(vc4, vc5, vt0123);
63 float32x4_t vp4567 = vfmaq_f32(vc4, vc5, vt4567);
64 float32x4_t vp89AB = vfmaq_f32(vc4, vc5, vt89AB);
65
66 vp0123 = vfmaq_f32(vc3, vp0123, vt0123);
67 vp4567 = vfmaq_f32(vc3, vp4567, vt4567);
68 vp89AB = vfmaq_f32(vc3, vp89AB, vt89AB);
69
70 vp0123 = vfmaq_f32(vc2, vp0123, vt0123);
71 vp4567 = vfmaq_f32(vc2, vp4567, vt4567);
72 vp89AB = vfmaq_f32(vc2, vp89AB, vt89AB);
73
74 vp0123 = vfmaq_f32(vc1, vp0123, vt0123);
75 vp4567 = vfmaq_f32(vc1, vp4567, vt4567);
76 vp89AB = vfmaq_f32(vc1, vp89AB, vt89AB);
77
78 vt0123 = vmulq_f32(vt0123, vs0123);
79 vt4567 = vmulq_f32(vt4567, vs4567);
80 vt89AB = vmulq_f32(vt89AB, vs89AB);
81
82 const float32x4_t ve0123 = vfmaq_f32(vs0123, vp0123, vt0123);
83 const float32x4_t ve4567 = vfmaq_f32(vs4567, vp4567, vt4567);
84 const float32x4_t ve89AB = vfmaq_f32(vs89AB, vp89AB, vt89AB);
85
86 const float32x4_t vd0123 = vaddq_f32(ve0123, vone);
87 const float32x4_t vd4567 = vaddq_f32(ve4567, vone);
88 const float32x4_t vd89AB = vaddq_f32(ve89AB, vone);
89
90 float32x4_t vf0123 = vdivq_f32(ve0123, vd0123);
91 float32x4_t vf4567 = vdivq_f32(ve4567, vd4567);
92 float32x4_t vf89AB = vdivq_f32(ve89AB, vd89AB);
93
94 vf0123 = vreinterpretq_f32_u32(vbicq_u32(vreinterpretq_u32_f32(vf0123), vcagtq_f32(vx0123, vdenorm_cutoff)));
95 vf4567 = vreinterpretq_f32_u32(vbicq_u32(vreinterpretq_u32_f32(vf4567), vcagtq_f32(vx4567, vdenorm_cutoff)));
96 vf89AB = vreinterpretq_f32_u32(vbicq_u32(vreinterpretq_u32_f32(vf89AB), vcagtq_f32(vx89AB, vdenorm_cutoff)));
97
98 const uint32x4_t vm0123 = vcltq_f32(vx0123, vmovq_n_f32(0.0f));
99 const uint32x4_t vm4567 = vcltq_f32(vx4567, vmovq_n_f32(0.0f));
100 const uint32x4_t vm89AB = vcltq_f32(vx89AB, vmovq_n_f32(0.0f));
101
102 vf0123 = vbslq_f32(vm0123, vf0123, vsubq_f32(vone, vf0123));
103 vf4567 = vbslq_f32(vm4567, vf4567, vsubq_f32(vone, vf4567));
104 vf89AB = vbslq_f32(vm89AB, vf89AB, vsubq_f32(vone, vf89AB));
105
106 vst1q_f32(y, vf0123); y += 4;
107 vst1q_f32(y, vf4567); y += 4;
108 vst1q_f32(y, vf89AB); y += 4;
109 }
110 for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) {
111 const float32x4_t vx = vld1q_f32(x); x += 4;
112
113 const float32x4_t vz = vabsq_f32(vx);
114
115 float32x4_t vn = vfmaq_f32(vmagic_bias, vz, vminus_log2e);
116 const float32x4_t vs = vreinterpretq_f32_s32(vshlq_n_s32(vreinterpretq_s32_f32(vn), 23));
117 vn = vsubq_f32(vn, vmagic_bias);
118 float32x4_t vt = vfmaq_f32(vz, vn, vln2);
119
120 float32x4_t vp = vfmaq_f32(vc4, vc5, vt);
121 vp = vfmaq_f32(vc3, vp, vt);
122 vp = vfmaq_f32(vc2, vp, vt);
123 vp = vfmaq_f32(vc1, vp, vt);
124
125 vt = vmulq_f32(vt, vs);
126 const float32x4_t ve = vfmaq_f32(vs, vp, vt);
127 const float32x4_t vd = vaddq_f32(ve, vone);
128
129 float32x4_t vf = vdivq_f32(ve, vd);
130 vf = vreinterpretq_f32_u32(vbicq_u32(vreinterpretq_u32_f32(vf), vcagtq_f32(vx, vdenorm_cutoff)));
131 const uint32x4_t vm = vcltq_f32(vx, vmovq_n_f32(0.0f));
132 vf = vbslq_f32(vm, vf, vsubq_f32(vone, vf));
133
134 vst1q_f32(y, vf); y += 4;
135 }
136 if XNN_UNLIKELY(n != 0) {
137 const float32x4_t vx = vld1q_f32(x);
138
139 const float32x4_t vz = vabsq_f32(vx);
140
141 float32x4_t vn = vfmaq_f32(vmagic_bias, vz, vminus_log2e);
142 const float32x4_t vs = vreinterpretq_f32_s32(vshlq_n_s32(vreinterpretq_s32_f32(vn), 23));
143 vn = vsubq_f32(vn, vmagic_bias);
144 float32x4_t vt = vfmaq_f32(vz, vn, vln2);
145
146 float32x4_t vp = vfmaq_f32(vc4, vc5, vt);
147 vp = vfmaq_f32(vc3, vp, vt);
148 vp = vfmaq_f32(vc2, vp, vt);
149 vp = vfmaq_f32(vc1, vp, vt);
150
151 vt = vmulq_f32(vt, vs);
152 const float32x4_t ve = vfmaq_f32(vs, vp, vt);
153 const float32x4_t vd = vaddq_f32(ve, vone);
154
155 float32x4_t vf = vdivq_f32(ve, vd);
156 vf = vreinterpretq_f32_u32(vbicq_u32(vreinterpretq_u32_f32(vf), vcagtq_f32(vx, vdenorm_cutoff)));
157 const uint32x4_t vm = vcltq_f32(vx, vmovq_n_f32(0.0f));
158 vf = vbslq_f32(vm, vf, vsubq_f32(vone, vf));
159
160 float32x2_t vf_lo = vget_low_f32(vf);
161 if (n & (2 * sizeof(float))) {
162 vst1_f32(y, vf_lo); y += 2;
163 vf_lo = vget_high_f32(vf);
164 }
165 if (n & (1 * sizeof(float))) {
166 vst1_lane_f32(y, vf_lo, 0);
167 }
168 }
169 }
170