1 // Auto-generated file. Do not edit!
2 // Template: src/f32-velu/neon-p6.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/vunary.h>
15 #include <xnnpack/common.h>
16
17
xnn_f32_velu_ukernel__neonfma_rr1_p6_x12(size_t n,const float * x,float * y,const union xnn_f32_elu_params params[restrict XNN_MIN_ELEMENTS (1)])18 void xnn_f32_velu_ukernel__neonfma_rr1_p6_x12(
19 size_t n,
20 const float* x,
21 float* y,
22 const union xnn_f32_elu_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 vprescale = vld1q_dup_f32(¶ms->scalar.prescale);
30 const float32x4_t valpha = vld1q_dup_f32(¶ms->scalar.alpha);
31 const float32x4_t vbeta = vld1q_dup_f32(¶ms->scalar.beta);
32
33 const float32x4_t vsat_cutoff = vmovq_n_f32(-0x1.154246p+4f);
34 const float32x4_t vmagic_bias = vmovq_n_f32(0x1.8000FEp23f);
35 const float32x4_t vlog2e = vmovq_n_f32(0x1.715476p+0f);
36 const float32x4_t vminus_ln2 = vmovq_n_f32(-0x1.62E430p-1f);
37 const float32x4_t vc6 = vmovq_n_f32(0x1.6b7338p-10f);
38 const float32x4_t vc5 = vmovq_n_f32(0x1.12278Ep-7f);
39 const float32x4_t vc4 = vmovq_n_f32(0x1.555716p-5f);
40 const float32x4_t vc3 = vmovq_n_f32(0x1.5554B0p-3f);
41 const float32x4_t vc2 = vmovq_n_f32(0x1.FFFFFEp-2f);
42 const float32x4_t vone = vmovq_n_f32(1.0f);
43
44 for (; n >= 12 * sizeof(float); n -= 12 * sizeof(float)) {
45 float32x4_t vx0123 = vld1q_f32(x); x += 4;
46 float32x4_t vx4567 = vld1q_f32(x); x += 4;
47 float32x4_t vx89AB = vld1q_f32(x); x += 4;
48
49 const float32x4_t vz0123 = vmaxq_f32(vmulq_f32(vx0123, vprescale), vsat_cutoff);
50 const float32x4_t vz4567 = vmaxq_f32(vmulq_f32(vx4567, vprescale), vsat_cutoff);
51 const float32x4_t vz89AB = vmaxq_f32(vmulq_f32(vx89AB, vprescale), vsat_cutoff);
52
53 float32x4_t vn0123 = vfmaq_f32(vmagic_bias, vz0123, vlog2e);
54 float32x4_t vn4567 = vfmaq_f32(vmagic_bias, vz4567, vlog2e);
55 float32x4_t vn89AB = vfmaq_f32(vmagic_bias, vz89AB, vlog2e);
56
57 float32x4_t vs0123 = vreinterpretq_f32_s32(vshlq_n_s32(vreinterpretq_s32_f32(vn0123), 23));
58 vn0123 = vsubq_f32(vn0123, vmagic_bias);
59 float32x4_t vs4567 = vreinterpretq_f32_s32(vshlq_n_s32(vreinterpretq_s32_f32(vn4567), 23));
60 vn4567 = vsubq_f32(vn4567, vmagic_bias);
61 float32x4_t vs89AB = vreinterpretq_f32_s32(vshlq_n_s32(vreinterpretq_s32_f32(vn89AB), 23));
62 vn89AB = vsubq_f32(vn89AB, vmagic_bias);
63
64 float32x4_t vt0123 = vfmaq_f32(vz0123, vn0123, vminus_ln2);
65 float32x4_t vt4567 = vfmaq_f32(vz4567, vn4567, vminus_ln2);
66 float32x4_t vt89AB = vfmaq_f32(vz89AB, vn89AB, vminus_ln2);
67
68 float32x4_t vp0123 = vfmaq_f32(vc5, vc6, vt0123);
69 float32x4_t vp4567 = vfmaq_f32(vc5, vc6, vt4567);
70 float32x4_t vp89AB = vfmaq_f32(vc5, vc6, vt89AB);
71
72 vp0123 = vfmaq_f32(vc4, vp0123, vt0123);
73 vp4567 = vfmaq_f32(vc4, vp4567, vt4567);
74 vp89AB = vfmaq_f32(vc4, vp89AB, vt89AB);
75
76 vp0123 = vfmaq_f32(vc3, vp0123, vt0123);
77 vp4567 = vfmaq_f32(vc3, vp4567, vt4567);
78 vp89AB = vfmaq_f32(vc3, vp89AB, vt89AB);
79
80 vp0123 = vfmaq_f32(vc2, vp0123, vt0123);
81 vp4567 = vfmaq_f32(vc2, vp4567, vt4567);
82 vp89AB = vfmaq_f32(vc2, vp89AB, vt89AB);
83
84 vp0123 = vmulq_f32(vp0123, vt0123);
85 vp4567 = vmulq_f32(vp4567, vt4567);
86 vp89AB = vmulq_f32(vp89AB, vt89AB);
87
88 vt0123 = vmulq_f32(vt0123, vs0123);
89 vs0123 = vsubq_f32(vs0123, vone);
90 vt4567 = vmulq_f32(vt4567, vs4567);
91 vs4567 = vsubq_f32(vs4567, vone);
92 vt89AB = vmulq_f32(vt89AB, vs89AB);
93 vs89AB = vsubq_f32(vs89AB, vone);
94
95 vp0123 = vfmaq_f32(vt0123, vp0123, vt0123);
96 vp4567 = vfmaq_f32(vt4567, vp4567, vt4567);
97 vp89AB = vfmaq_f32(vt89AB, vp89AB, vt89AB);
98
99 const float32x4_t ve0123 = vmulq_f32(vaddq_f32(vp0123, vs0123), valpha);
100 const float32x4_t ve4567 = vmulq_f32(vaddq_f32(vp4567, vs4567), valpha);
101 const float32x4_t ve89AB = vmulq_f32(vaddq_f32(vp89AB, vs89AB), valpha);
102
103 const uint32x4_t vm0123 = vcltq_f32(vx0123, vmovq_n_f32(0.0f));
104 vx0123 = vmulq_f32(vx0123, vbeta);
105 const uint32x4_t vm4567 = vcltq_f32(vx4567, vmovq_n_f32(0.0f));
106 vx4567 = vmulq_f32(vx4567, vbeta);
107 const uint32x4_t vm89AB = vcltq_f32(vx89AB, vmovq_n_f32(0.0f));
108 vx89AB = vmulq_f32(vx89AB, vbeta);
109
110 const float32x4_t vy0123 = vbslq_f32(vm0123, ve0123, vx0123);
111 const float32x4_t vy4567 = vbslq_f32(vm4567, ve4567, vx4567);
112 const float32x4_t vy89AB = vbslq_f32(vm89AB, ve89AB, vx89AB);
113
114 vst1q_f32(y, vy0123); y += 4;
115 vst1q_f32(y, vy4567); y += 4;
116 vst1q_f32(y, vy89AB); y += 4;
117 }
118 for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) {
119 float32x4_t vx = vld1q_f32(x); x += 4;
120
121 const float32x4_t vz = vmaxq_f32(vmulq_f32(vx, vprescale), vsat_cutoff);
122
123 float32x4_t vn = vfmaq_f32(vmagic_bias, vz, vlog2e);
124 float32x4_t vs = vreinterpretq_f32_s32(vshlq_n_s32(vreinterpretq_s32_f32(vn), 23));
125 vn = vsubq_f32(vn, vmagic_bias);
126
127 float32x4_t vt = vfmaq_f32(vz, vn, vminus_ln2);
128
129 float32x4_t vp = vfmaq_f32(vc5, vc6, vt);
130 vp = vfmaq_f32(vc4, vp, vt);
131 vp = vfmaq_f32(vc3, vp, vt);
132 vp = vfmaq_f32(vc2, vp, vt);
133 vp = vmulq_f32(vp, vt);
134
135 vt = vmulq_f32(vt, vs);
136 vs = vsubq_f32(vs, vone);
137 vp = vfmaq_f32(vt, vp, vt);
138 const float32x4_t ve = vmulq_f32(vaddq_f32(vp, vs), valpha);
139
140 const uint32x4_t vm = vcltq_f32(vx, vmovq_n_f32(0.0f));
141 vx = vmulq_f32(vx, vbeta);
142 const float32x4_t vy = vbslq_f32(vm, ve, vx);
143
144 vst1q_f32(y, vy); y += 4;
145 }
146 if XNN_UNLIKELY(n != 0) {
147 float32x4_t vx = vld1q_f32(x);
148
149 const float32x4_t vz = vmaxq_f32(vmulq_f32(vx, vprescale), vsat_cutoff);
150
151 float32x4_t vn = vfmaq_f32(vmagic_bias, vz, vlog2e);
152 float32x4_t vs = vreinterpretq_f32_s32(vshlq_n_s32(vreinterpretq_s32_f32(vn), 23));
153 vn = vsubq_f32(vn, vmagic_bias);
154
155 float32x4_t vt = vfmaq_f32(vz, vn, vminus_ln2);
156
157 float32x4_t vp = vfmaq_f32(vc5, vc6, vt);
158 vp = vfmaq_f32(vc4, vp, vt);
159 vp = vfmaq_f32(vc3, vp, vt);
160 vp = vfmaq_f32(vc2, vp, vt);
161 vp = vmulq_f32(vp, vt);
162
163 vt = vmulq_f32(vt, vs);
164 vs = vsubq_f32(vs, vone);
165 vp = vfmaq_f32(vt, vp, vt);
166 const float32x4_t ve = vmulq_f32(vaddq_f32(vp, vs), valpha);
167
168 const uint32x4_t vm = vcltq_f32(vx, vmovq_n_f32(0.0f));
169 vx = vmulq_f32(vx, vbeta);
170 const float32x4_t vy = vbslq_f32(vm, ve, vx);
171
172 float32x2_t vy_lo = vget_low_f32(vy);
173 if (n & (2 * sizeof(float))) {
174 vst1_f32(y, vy_lo); y += 2;
175 vy_lo = vget_high_f32(vy);
176 }
177 if (n & (1 * sizeof(float))) {
178 vst1_lane_f32(y, vy_lo, 0);
179 }
180 }
181 }
182