1 // Auto-generated file. Do not edit!
2 // Template: src/f32-sigmoid/sse-p5-div.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 <emmintrin.h>
13
14 #include <xnnpack/common.h>
15 #include <xnnpack/vunary.h>
16
17
xnn_f32_sigmoid_ukernel__sse2_p5_div_x8(size_t n,const float * x,float * y,const void * params)18 void xnn_f32_sigmoid_ukernel__sse2_p5_div_x8(
19 size_t n,
20 const float* x,
21 float* y,
22 const void* params) XNN_DISABLE_TSAN
23 {
24 assert(n % sizeof(float) == 0);
25
26 const __m128 vsign_mask = _mm_set1_ps(-0.0f);
27 const __m128 vmagic_bias = _mm_set1_ps(0x1.8000FEp23f);
28 const __m128 vlog2e = _mm_set1_ps(0x1.715476p0f);
29 const __m128 vminus_ln2_hi = _mm_set1_ps(-0x1.62E400p-1f);
30 const __m128 vminus_ln2_lo = _mm_set1_ps(-0x1.7F7D1Cp-20f);
31 const __m128 vc5 = _mm_set1_ps(0x1.0F9F9Cp-7f);
32 const __m128 vc4 = _mm_set1_ps(0x1.573A1Ap-5f);
33 const __m128 vc3 = _mm_set1_ps(0x1.555A80p-3f);
34 const __m128 vc2 = _mm_set1_ps(0x1.FFFDC6p-2f);
35 const __m128 vc1 = _mm_set1_ps(0x1.FFFFF6p-1f);
36 const __m128 vone = _mm_set1_ps(1.0f);
37 const __m128 vdenorm_cutoff = _mm_set1_ps(-0x1.5D589Ep+6f);
38
39 for (; n >= 8 * sizeof(float); n -= 8 * sizeof(float)) {
40 const __m128 vx0123 = _mm_loadu_ps(x);
41 const __m128 vx4567 = _mm_loadu_ps(x + 4);
42
43 const __m128 vz0123 = _mm_or_ps(vx0123, vsign_mask);
44 const __m128 vz4567 = _mm_or_ps(vx4567, vsign_mask);
45
46 __m128 vn0123 = _mm_add_ps(_mm_mul_ps(vz0123, vlog2e), vmagic_bias);
47 __m128 vn4567 = _mm_add_ps(_mm_mul_ps(vz4567, vlog2e), vmagic_bias);
48
49 const __m128 vs0123 = _mm_castsi128_ps(_mm_slli_epi32(_mm_castps_si128(vn0123), 23));
50 const __m128 vs4567 = _mm_castsi128_ps(_mm_slli_epi32(_mm_castps_si128(vn4567), 23));
51
52 vn0123 = _mm_sub_ps(vn0123, vmagic_bias);
53 vn4567 = _mm_sub_ps(vn4567, vmagic_bias);
54
55 __m128 vt0123 = _mm_add_ps(_mm_mul_ps(vn0123, vminus_ln2_hi), vz0123);
56 __m128 vt4567 = _mm_add_ps(_mm_mul_ps(vn4567, vminus_ln2_hi), vz4567);
57
58 vt0123 = _mm_add_ps(_mm_mul_ps(vn0123, vminus_ln2_lo), vt0123);
59 vt4567 = _mm_add_ps(_mm_mul_ps(vn4567, vminus_ln2_lo), vt4567);
60
61 __m128 vp0123 = _mm_add_ps(_mm_mul_ps(vc5, vt0123), vc4);
62 __m128 vp4567 = _mm_add_ps(_mm_mul_ps(vc5, vt4567), vc4);
63
64 vp0123 = _mm_add_ps(_mm_mul_ps(vp0123, vt0123), vc3);
65 vp4567 = _mm_add_ps(_mm_mul_ps(vp4567, vt4567), vc3);
66
67 vp0123 = _mm_add_ps(_mm_mul_ps(vp0123, vt0123), vc2);
68 vp4567 = _mm_add_ps(_mm_mul_ps(vp4567, vt4567), vc2);
69
70 vp0123 = _mm_add_ps(_mm_mul_ps(vp0123, vt0123), vc1);
71 vp4567 = _mm_add_ps(_mm_mul_ps(vp4567, vt4567), vc1);
72
73 vt0123 = _mm_mul_ps(vt0123, vs0123);
74 vt4567 = _mm_mul_ps(vt4567, vs4567);
75
76 __m128 ve0123 = _mm_add_ps(_mm_mul_ps(vt0123, vp0123), vs0123);
77 __m128 ve4567 = _mm_add_ps(_mm_mul_ps(vt4567, vp4567), vs4567);
78
79 __m128 vd0123 = _mm_add_ps(ve0123, vone);
80 __m128 vd4567 = _mm_add_ps(ve4567, vone);
81
82 __m128 vf0123 = _mm_div_ps(ve0123, vd0123);
83 __m128 vf4567 = _mm_div_ps(ve4567, vd4567);
84
85 vf0123 = _mm_andnot_ps(_mm_cmplt_ps(vz0123, vdenorm_cutoff), vf0123);
86 vf4567 = _mm_andnot_ps(_mm_cmplt_ps(vz4567, vdenorm_cutoff), vf4567);
87
88 const __m128 vm0123 = _mm_castsi128_ps(_mm_cmpgt_epi32(_mm_setzero_si128(), _mm_castps_si128(vx0123)));
89 const __m128 vm4567 = _mm_castsi128_ps(_mm_cmpgt_epi32(_mm_setzero_si128(), _mm_castps_si128(vx4567)));
90
91 vf0123 = _mm_or_ps(_mm_and_ps(vf0123, vm0123), _mm_andnot_ps(vm0123, _mm_sub_ps(vone, vf0123)));
92 vf4567 = _mm_or_ps(_mm_and_ps(vf4567, vm4567), _mm_andnot_ps(vm4567, _mm_sub_ps(vone, vf4567)));
93
94 _mm_storeu_ps(y, vf0123);
95 _mm_storeu_ps(y + 4, vf4567);
96
97 x += 8;
98 y += 8;
99 }
100 for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) {
101 const __m128 vx = _mm_loadu_ps(x);
102
103 const __m128 vz = _mm_or_ps(vx, vsign_mask);
104
105 __m128 vn = _mm_add_ps(_mm_mul_ps(vz, vlog2e), vmagic_bias);
106 const __m128 vs = _mm_castsi128_ps(_mm_slli_epi32(_mm_castps_si128(vn), 23));
107 vn = _mm_sub_ps(vn, vmagic_bias);
108
109 __m128 vt = _mm_add_ps(_mm_mul_ps(vn, vminus_ln2_hi), vz);
110 vt = _mm_add_ps(_mm_mul_ps(vn, vminus_ln2_lo), vt);
111
112 __m128 vp = _mm_add_ps(_mm_mul_ps(vc5, vt), vc4);
113 vp = _mm_add_ps(_mm_mul_ps(vp, vt), vc3);
114 vp = _mm_add_ps(_mm_mul_ps(vp, vt), vc2);
115 vp = _mm_add_ps(_mm_mul_ps(vp, vt), vc1);
116
117 vt = _mm_mul_ps(vt, vs);
118 __m128 ve = _mm_add_ps(_mm_mul_ps(vt, vp), vs);
119
120 __m128 vd = _mm_add_ps(ve, vone);
121 __m128 vf = _mm_div_ps(ve, vd);
122
123 vf = _mm_andnot_ps(_mm_cmplt_ps(vz, vdenorm_cutoff), vf);
124 const __m128 vm = _mm_castsi128_ps(_mm_cmpgt_epi32(_mm_setzero_si128(), _mm_castps_si128(vx)));
125 vf = _mm_or_ps(_mm_and_ps(vf, vm), _mm_andnot_ps(vm, _mm_sub_ps(vone, vf)));
126
127 _mm_storeu_ps(y, vf);
128
129 x += 4;
130 y += 4;
131 }
132 if XNN_UNLIKELY(n != 0) {
133 const __m128 vx = _mm_loadu_ps(x);
134
135 const __m128 vz = _mm_or_ps(vx, vsign_mask);
136
137 __m128 vn = _mm_add_ps(_mm_mul_ps(vz, vlog2e), vmagic_bias);
138 const __m128 vs = _mm_castsi128_ps(_mm_slli_epi32(_mm_castps_si128(vn), 23));
139 vn = _mm_sub_ps(vn, vmagic_bias);
140
141 __m128 vt = _mm_add_ps(_mm_mul_ps(vn, vminus_ln2_hi), vz);
142 vt = _mm_add_ps(_mm_mul_ps(vn, vminus_ln2_lo), vt);
143
144 __m128 vp = _mm_add_ps(_mm_mul_ps(vc5, vt), vc4);
145 vp = _mm_add_ps(_mm_mul_ps(vp, vt), vc3);
146 vp = _mm_add_ps(_mm_mul_ps(vp, vt), vc2);
147 vp = _mm_add_ps(_mm_mul_ps(vp, vt), vc1);
148
149 vt = _mm_mul_ps(vt, vs);
150 __m128 ve = _mm_add_ps(_mm_mul_ps(vt, vp), vs);
151
152 __m128 vd = _mm_add_ps(ve, vone);
153 __m128 vf = _mm_div_ps(ve, vd);
154
155 vf = _mm_andnot_ps(_mm_cmplt_ps(vz, vdenorm_cutoff), vf);
156 const __m128 vm = _mm_castsi128_ps(_mm_cmpgt_epi32(_mm_setzero_si128(), _mm_castps_si128(vx)));
157 vf = _mm_or_ps(_mm_and_ps(vf, vm), _mm_andnot_ps(vm, _mm_sub_ps(vone, vf)));
158
159 if (n & (2 * sizeof(float))) {
160 _mm_storel_pi((__m64*) y, vf);
161 vf = _mm_movehl_ps(vf, vf);
162 y += 2;
163 }
164 if (n & (1 * sizeof(float))) {
165 _mm_store_ss(y, vf);
166 }
167 }
168 }
169