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__neon_rr2_p5_nr2recps_x20(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__neon_rr2_p5_nr2recps_x20(
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->neon_rr2_p5.magic_bias);
27 const float32x4_t vminus_log2e = vld1q_dup_f32(¶ms->neon_rr2_p5.minus_log2e);
28 const float32x4_t vln2_hi = vld1q_dup_f32(¶ms->neon_rr2_p5.ln2_hi);
29 const float32x4_t vln2_lo = vld1q_dup_f32(¶ms->neon_rr2_p5.ln2_lo);
30 const float32x4_t vc5 = vld1q_dup_f32(¶ms->neon_rr2_p5.c5);
31 const float32x4_t vc4 = vld1q_dup_f32(¶ms->neon_rr2_p5.c4);
32 const float32x4_t vc3 = vld1q_dup_f32(¶ms->neon_rr2_p5.c3);
33 const float32x4_t vc2 = vld1q_dup_f32(¶ms->neon_rr2_p5.c2);
34 const float32x4_t vc1 = vld1q_dup_f32(¶ms->neon_rr2_p5.c1);
35 const float32x4_t vone = vmovq_n_f32(1.0f);
36 const float32x4_t vdenorm_cutoff = vld1q_dup_f32(¶ms->neon_rr2_p5.denorm_cutoff);
37
38 for (; n >= 20 * sizeof(float); n -= 20 * sizeof(float)) {
39 const float32x4_t vx0123 = vld1q_f32(x); x += 4;
40 const float32x4_t vx4567 = vld1q_f32(x); x += 4;
41 const float32x4_t vx89AB = vld1q_f32(x); x += 4;
42 const float32x4_t vxCDEF = vld1q_f32(x); x += 4;
43 const float32x4_t vxGHIJ = vld1q_f32(x); x += 4;
44
45 const float32x4_t vz0123 = vabsq_f32(vx0123);
46 const float32x4_t vz4567 = vabsq_f32(vx4567);
47 const float32x4_t vz89AB = vabsq_f32(vx89AB);
48 const float32x4_t vzCDEF = vabsq_f32(vxCDEF);
49 const float32x4_t vzGHIJ = vabsq_f32(vxGHIJ);
50
51 float32x4_t vn0123 = vmlaq_f32(vmagic_bias, vz0123, vminus_log2e);
52 float32x4_t vn4567 = vmlaq_f32(vmagic_bias, vz4567, vminus_log2e);
53 float32x4_t vn89AB = vmlaq_f32(vmagic_bias, vz89AB, vminus_log2e);
54 float32x4_t vnCDEF = vmlaq_f32(vmagic_bias, vzCDEF, vminus_log2e);
55 float32x4_t vnGHIJ = vmlaq_f32(vmagic_bias, vzGHIJ, vminus_log2e);
56
57 const float32x4_t vs0123 = vreinterpretq_f32_s32(vshlq_n_s32(vreinterpretq_s32_f32(vn0123), 23));
58 const float32x4_t vs4567 = vreinterpretq_f32_s32(vshlq_n_s32(vreinterpretq_s32_f32(vn4567), 23));
59 const float32x4_t vs89AB = vreinterpretq_f32_s32(vshlq_n_s32(vreinterpretq_s32_f32(vn89AB), 23));
60 const float32x4_t vsCDEF = vreinterpretq_f32_s32(vshlq_n_s32(vreinterpretq_s32_f32(vnCDEF), 23));
61 const float32x4_t vsGHIJ = vreinterpretq_f32_s32(vshlq_n_s32(vreinterpretq_s32_f32(vnGHIJ), 23));
62
63 vn0123 = vsubq_f32(vn0123, vmagic_bias);
64 vn4567 = vsubq_f32(vn4567, vmagic_bias);
65 vn89AB = vsubq_f32(vn89AB, vmagic_bias);
66 vnCDEF = vsubq_f32(vnCDEF, vmagic_bias);
67 vnGHIJ = vsubq_f32(vnGHIJ, vmagic_bias);
68
69 float32x4_t vt0123 = vmlaq_f32(vz0123, vn0123, vln2_hi);
70 float32x4_t vt4567 = vmlaq_f32(vz4567, vn4567, vln2_hi);
71 float32x4_t vt89AB = vmlaq_f32(vz89AB, vn89AB, vln2_hi);
72 float32x4_t vtCDEF = vmlaq_f32(vzCDEF, vnCDEF, vln2_hi);
73 float32x4_t vtGHIJ = vmlaq_f32(vzGHIJ, vnGHIJ, vln2_hi);
74
75 vt0123 = vmlaq_f32(vt0123, vn0123, vln2_lo);
76 vt4567 = vmlaq_f32(vt4567, vn4567, vln2_lo);
77 vt89AB = vmlaq_f32(vt89AB, vn89AB, vln2_lo);
78 vtCDEF = vmlaq_f32(vtCDEF, vnCDEF, vln2_lo);
79 vtGHIJ = vmlaq_f32(vtGHIJ, vnGHIJ, vln2_lo);
80
81 float32x4_t vp0123 = vmlaq_f32(vc4, vc5, vt0123);
82 float32x4_t vp4567 = vmlaq_f32(vc4, vc5, vt4567);
83 float32x4_t vp89AB = vmlaq_f32(vc4, vc5, vt89AB);
84 float32x4_t vpCDEF = vmlaq_f32(vc4, vc5, vtCDEF);
85 float32x4_t vpGHIJ = vmlaq_f32(vc4, vc5, vtGHIJ);
86
87 vp0123 = vmlaq_f32(vc3, vp0123, vt0123);
88 vp4567 = vmlaq_f32(vc3, vp4567, vt4567);
89 vp89AB = vmlaq_f32(vc3, vp89AB, vt89AB);
90 vpCDEF = vmlaq_f32(vc3, vpCDEF, vtCDEF);
91 vpGHIJ = vmlaq_f32(vc3, vpGHIJ, vtGHIJ);
92
93 vp0123 = vmlaq_f32(vc2, vp0123, vt0123);
94 vp4567 = vmlaq_f32(vc2, vp4567, vt4567);
95 vp89AB = vmlaq_f32(vc2, vp89AB, vt89AB);
96 vpCDEF = vmlaq_f32(vc2, vpCDEF, vtCDEF);
97 vpGHIJ = vmlaq_f32(vc2, vpGHIJ, vtGHIJ);
98
99 vp0123 = vmlaq_f32(vc1, vp0123, vt0123);
100 vp4567 = vmlaq_f32(vc1, vp4567, vt4567);
101 vp89AB = vmlaq_f32(vc1, vp89AB, vt89AB);
102 vpCDEF = vmlaq_f32(vc1, vpCDEF, vtCDEF);
103 vpGHIJ = vmlaq_f32(vc1, vpGHIJ, vtGHIJ);
104
105 vt0123 = vmulq_f32(vt0123, vs0123);
106 vt4567 = vmulq_f32(vt4567, vs4567);
107 vt89AB = vmulq_f32(vt89AB, vs89AB);
108 vtCDEF = vmulq_f32(vtCDEF, vsCDEF);
109 vtGHIJ = vmulq_f32(vtGHIJ, vsGHIJ);
110
111 const float32x4_t ve0123 = vmlaq_f32(vs0123, vp0123, vt0123);
112 const float32x4_t ve4567 = vmlaq_f32(vs4567, vp4567, vt4567);
113 const float32x4_t ve89AB = vmlaq_f32(vs89AB, vp89AB, vt89AB);
114 const float32x4_t veCDEF = vmlaq_f32(vsCDEF, vpCDEF, vtCDEF);
115 const float32x4_t veGHIJ = vmlaq_f32(vsGHIJ, vpGHIJ, vtGHIJ);
116
117 const float32x4_t vd0123 = vaddq_f32(ve0123, vone);
118 const float32x4_t vd4567 = vaddq_f32(ve4567, vone);
119 const float32x4_t vd89AB = vaddq_f32(ve89AB, vone);
120 const float32x4_t vdCDEF = vaddq_f32(veCDEF, vone);
121 const float32x4_t vdGHIJ = vaddq_f32(veGHIJ, vone);
122
123 float32x4_t vr0123 = vrecpeq_f32(vd0123);
124 float32x4_t vr4567 = vrecpeq_f32(vd4567);
125 float32x4_t vr89AB = vrecpeq_f32(vd89AB);
126 float32x4_t vrCDEF = vrecpeq_f32(vdCDEF);
127 float32x4_t vrGHIJ = vrecpeq_f32(vdGHIJ);
128
129 vr0123 = vmulq_f32(vr0123, vrecpsq_f32(vr0123, vd0123));
130 vr4567 = vmulq_f32(vr4567, vrecpsq_f32(vr4567, vd4567));
131 vr89AB = vmulq_f32(vr89AB, vrecpsq_f32(vr89AB, vd89AB));
132 vrCDEF = vmulq_f32(vrCDEF, vrecpsq_f32(vrCDEF, vdCDEF));
133 vrGHIJ = vmulq_f32(vrGHIJ, vrecpsq_f32(vrGHIJ, vdGHIJ));
134
135 vr0123 = vmulq_f32(vr0123, vrecpsq_f32(vr0123, vd0123));
136 vr4567 = vmulq_f32(vr4567, vrecpsq_f32(vr4567, vd4567));
137 vr89AB = vmulq_f32(vr89AB, vrecpsq_f32(vr89AB, vd89AB));
138 vrCDEF = vmulq_f32(vrCDEF, vrecpsq_f32(vrCDEF, vdCDEF));
139 vrGHIJ = vmulq_f32(vrGHIJ, vrecpsq_f32(vrGHIJ, vdGHIJ));
140
141 float32x4_t vf0123 = vmulq_f32(ve0123, vr0123);
142 float32x4_t vf4567 = vmulq_f32(ve4567, vr4567);
143 float32x4_t vf89AB = vmulq_f32(ve89AB, vr89AB);
144 float32x4_t vfCDEF = vmulq_f32(veCDEF, vrCDEF);
145 float32x4_t vfGHIJ = vmulq_f32(veGHIJ, vrGHIJ);
146
147 vf0123 = vreinterpretq_f32_u32(vbicq_u32(vreinterpretq_u32_f32(vf0123), vcagtq_f32(vx0123, vdenorm_cutoff)));
148 vf4567 = vreinterpretq_f32_u32(vbicq_u32(vreinterpretq_u32_f32(vf4567), vcagtq_f32(vx4567, vdenorm_cutoff)));
149 vf89AB = vreinterpretq_f32_u32(vbicq_u32(vreinterpretq_u32_f32(vf89AB), vcagtq_f32(vx89AB, vdenorm_cutoff)));
150 vfCDEF = vreinterpretq_f32_u32(vbicq_u32(vreinterpretq_u32_f32(vfCDEF), vcagtq_f32(vxCDEF, vdenorm_cutoff)));
151 vfGHIJ = vreinterpretq_f32_u32(vbicq_u32(vreinterpretq_u32_f32(vfGHIJ), vcagtq_f32(vxGHIJ, vdenorm_cutoff)));
152
153 const uint32x4_t vm0123 = vcltq_f32(vx0123, vmovq_n_f32(0.0f));
154 const uint32x4_t vm4567 = vcltq_f32(vx4567, vmovq_n_f32(0.0f));
155 const uint32x4_t vm89AB = vcltq_f32(vx89AB, vmovq_n_f32(0.0f));
156 const uint32x4_t vmCDEF = vcltq_f32(vxCDEF, vmovq_n_f32(0.0f));
157 const uint32x4_t vmGHIJ = vcltq_f32(vxGHIJ, vmovq_n_f32(0.0f));
158
159 vf0123 = vbslq_f32(vm0123, vf0123, vsubq_f32(vone, vf0123));
160 vf4567 = vbslq_f32(vm4567, vf4567, vsubq_f32(vone, vf4567));
161 vf89AB = vbslq_f32(vm89AB, vf89AB, vsubq_f32(vone, vf89AB));
162 vfCDEF = vbslq_f32(vmCDEF, vfCDEF, vsubq_f32(vone, vfCDEF));
163 vfGHIJ = vbslq_f32(vmGHIJ, vfGHIJ, vsubq_f32(vone, vfGHIJ));
164
165 vst1q_f32(y, vf0123); y += 4;
166 vst1q_f32(y, vf4567); y += 4;
167 vst1q_f32(y, vf89AB); y += 4;
168 vst1q_f32(y, vfCDEF); y += 4;
169 vst1q_f32(y, vfGHIJ); y += 4;
170 }
171 for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) {
172 const float32x4_t vx = vld1q_f32(x); x += 4;
173
174 const float32x4_t vz = vabsq_f32(vx);
175
176 float32x4_t vn = vmlaq_f32(vmagic_bias, vz, vminus_log2e);
177 const float32x4_t vs = vreinterpretq_f32_s32(vshlq_n_s32(vreinterpretq_s32_f32(vn), 23));
178 vn = vsubq_f32(vn, vmagic_bias);
179 float32x4_t vt = vmlaq_f32(vz, vn, vln2_hi);
180 vt = vmlaq_f32(vt, vn, vln2_lo);
181
182 float32x4_t vp = vmlaq_f32(vc4, vc5, vt);
183 vp = vmlaq_f32(vc3, vp, vt);
184 vp = vmlaq_f32(vc2, vp, vt);
185 vp = vmlaq_f32(vc1, vp, vt);
186
187 vt = vmulq_f32(vt, vs);
188 const float32x4_t ve = vmlaq_f32(vs, vp, vt);
189 const float32x4_t vd = vaddq_f32(ve, vone);
190
191 float32x4_t vr = vrecpeq_f32(vd);
192 vr = vmulq_f32(vr, vrecpsq_f32(vr, vd));
193 vr = vmulq_f32(vr, vrecpsq_f32(vr, vd));
194
195 float32x4_t vf = vmulq_f32(ve, vr);
196 vf = vreinterpretq_f32_u32(vbicq_u32(vreinterpretq_u32_f32(vf), vcagtq_f32(vx, vdenorm_cutoff)));
197 const uint32x4_t vm = vcltq_f32(vx, vmovq_n_f32(0.0f));
198 vf = vbslq_f32(vm, vf, vsubq_f32(vone, vf));
199
200 vst1q_f32(y, vf); y += 4;
201 }
202 if XNN_UNLIKELY(n != 0) {
203 const float32x4_t vx = vld1q_f32(x);
204
205 const float32x4_t vz = vabsq_f32(vx);
206
207 float32x4_t vn = vmlaq_f32(vmagic_bias, vz, vminus_log2e);
208 const float32x4_t vs = vreinterpretq_f32_s32(vshlq_n_s32(vreinterpretq_s32_f32(vn), 23));
209 vn = vsubq_f32(vn, vmagic_bias);
210 float32x4_t vt = vmlaq_f32(vz, vn, vln2_hi);
211 vt = vmlaq_f32(vt, vn, vln2_lo);
212
213 float32x4_t vp = vmlaq_f32(vc4, vc5, vt);
214 vp = vmlaq_f32(vc3, vp, vt);
215 vp = vmlaq_f32(vc2, vp, vt);
216 vp = vmlaq_f32(vc1, vp, vt);
217
218 vt = vmulq_f32(vt, vs);
219 const float32x4_t ve = vmlaq_f32(vs, vp, vt);
220 const float32x4_t vd = vaddq_f32(ve, vone);
221
222 float32x4_t vr = vrecpeq_f32(vd);
223 vr = vmulq_f32(vr, vrecpsq_f32(vr, vd));
224 vr = vmulq_f32(vr, vrecpsq_f32(vr, vd));
225
226 float32x4_t vf = vmulq_f32(ve, vr);
227 vf = vreinterpretq_f32_u32(vbicq_u32(vreinterpretq_u32_f32(vf), vcagtq_f32(vx, vdenorm_cutoff)));
228 const uint32x4_t vm = vcltq_f32(vx, vmovq_n_f32(0.0f));
229 vf = vbslq_f32(vm, vf, vsubq_f32(vone, vf));
230
231 float32x2_t vf_lo = vget_low_f32(vf);
232 if (n & (2 * sizeof(float))) {
233 vst1_f32(y, vf_lo); y += 2;
234 vf_lo = vget_high_f32(vf);
235 }
236 if (n & (1 * sizeof(float))) {
237 vst1_lane_f32(y, vf_lo, 0);
238 }
239 }
240 }
241