1 // Auto-generated file. Do not edit!
2 // Template: src/f32-vsigmoid/avx2-rr1-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 <immintrin.h>
13
14 #include <xnnpack/common.h>
15 #include <xnnpack/vunary.h>
16
17
xnn_f32_vsigmoid_ukernel__avx2_rr1_p5_div_x24(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__avx2_rr1_p5_div_x24(
19 size_t n,
20 const float* x,
21 float* y,
22 const union xnn_f32_sigmoid_params params[restrict XNN_MIN_ELEMENTS(1)])
23 {
24 assert(n % sizeof(float) == 0);
25
26 const __m256 vsign_mask = _mm256_load_ps(params->avx2_rr1_p5.sign_mask);
27 const __m256 vmagic_bias = _mm256_load_ps(params->avx2_rr1_p5.magic_bias);
28 const __m256 vlog2e = _mm256_load_ps(params->avx2_rr1_p5.log2e);
29 const __m256 vminus_ln2 = _mm256_load_ps(params->avx2_rr1_p5.minus_ln2);
30 const __m256 vc5 = _mm256_load_ps(params->avx2_rr1_p5.c5);
31 const __m256 vc4 = _mm256_load_ps(params->avx2_rr1_p5.c4);
32 const __m256 vc3 = _mm256_load_ps(params->avx2_rr1_p5.c3);
33 const __m256 vc2 = _mm256_load_ps(params->avx2_rr1_p5.c2);
34 const __m256 vc1 = _mm256_load_ps(params->avx2_rr1_p5.c1);
35 const __m256 vone = _mm256_load_ps(params->avx2_rr1_p5.one);
36 const __m256 vdenorm_cutoff = _mm256_load_ps(params->avx2_rr1_p5.denorm_cutoff);
37
38 for (; n >= 24 * sizeof(float); n -= 24 * sizeof(float)) {
39 const __m256 vx0 = _mm256_loadu_ps(x);
40 const __m256 vx1 = _mm256_loadu_ps(x + 8);
41 const __m256 vx2 = _mm256_loadu_ps(x + 16);
42 x += 24;
43
44 const __m256 vz0 = _mm256_or_ps(vx0, vsign_mask);
45 const __m256 vz1 = _mm256_or_ps(vx1, vsign_mask);
46 const __m256 vz2 = _mm256_or_ps(vx2, vsign_mask);
47
48 __m256 vn0 = _mm256_fmadd_ps(vz0, vlog2e, vmagic_bias);
49 __m256 vn1 = _mm256_fmadd_ps(vz1, vlog2e, vmagic_bias);
50 __m256 vn2 = _mm256_fmadd_ps(vz2, vlog2e, vmagic_bias);
51
52 const __m256 vs0 = _mm256_castsi256_ps(_mm256_slli_epi32(_mm256_castps_si256(vn0), 23));
53 const __m256 vs1 = _mm256_castsi256_ps(_mm256_slli_epi32(_mm256_castps_si256(vn1), 23));
54 const __m256 vs2 = _mm256_castsi256_ps(_mm256_slli_epi32(_mm256_castps_si256(vn2), 23));
55
56 vn0 = _mm256_sub_ps(vn0, vmagic_bias);
57 vn1 = _mm256_sub_ps(vn1, vmagic_bias);
58 vn2 = _mm256_sub_ps(vn2, vmagic_bias);
59
60 __m256 vt0 = _mm256_fmadd_ps(vn0, vminus_ln2, vz0);
61 __m256 vt1 = _mm256_fmadd_ps(vn1, vminus_ln2, vz1);
62 __m256 vt2 = _mm256_fmadd_ps(vn2, vminus_ln2, vz2);
63
64 __m256 vp0 = _mm256_fmadd_ps(vc5, vt0, vc4);
65 __m256 vp1 = _mm256_fmadd_ps(vc5, vt1, vc4);
66 __m256 vp2 = _mm256_fmadd_ps(vc5, vt2, vc4);
67
68 vp0 = _mm256_fmadd_ps(vp0, vt0, vc3);
69 vp1 = _mm256_fmadd_ps(vp1, vt1, vc3);
70 vp2 = _mm256_fmadd_ps(vp2, vt2, vc3);
71
72 vp0 = _mm256_fmadd_ps(vp0, vt0, vc2);
73 vp1 = _mm256_fmadd_ps(vp1, vt1, vc2);
74 vp2 = _mm256_fmadd_ps(vp2, vt2, vc2);
75
76 vp0 = _mm256_fmadd_ps(vp0, vt0, vc1);
77 vp1 = _mm256_fmadd_ps(vp1, vt1, vc1);
78 vp2 = _mm256_fmadd_ps(vp2, vt2, vc1);
79
80 vt0 = _mm256_mul_ps(vt0, vs0);
81 vt1 = _mm256_mul_ps(vt1, vs1);
82 vt2 = _mm256_mul_ps(vt2, vs2);
83
84 const __m256 ve0 = _mm256_fmadd_ps(vt0, vp0, vs0);
85 const __m256 ve1 = _mm256_fmadd_ps(vt1, vp1, vs1);
86 const __m256 ve2 = _mm256_fmadd_ps(vt2, vp2, vs2);
87
88 const __m256 vd0 = _mm256_add_ps(ve0, vone);
89 const __m256 vd1 = _mm256_add_ps(ve1, vone);
90 const __m256 vd2 = _mm256_add_ps(ve2, vone);
91
92 __m256 vf0 = _mm256_div_ps(ve0, vd0);
93 __m256 vf1 = _mm256_div_ps(ve1, vd1);
94 __m256 vf2 = _mm256_div_ps(ve2, vd2);
95
96 vf0 = _mm256_andnot_ps(_mm256_cmp_ps(vz0, vdenorm_cutoff, _CMP_LT_OS), vf0);
97 vf1 = _mm256_andnot_ps(_mm256_cmp_ps(vz1, vdenorm_cutoff, _CMP_LT_OS), vf1);
98 vf2 = _mm256_andnot_ps(_mm256_cmp_ps(vz2, vdenorm_cutoff, _CMP_LT_OS), vf2);
99
100 vf0 = _mm256_blendv_ps(_mm256_sub_ps(vone, vf0), vf0, vx0);
101 vf1 = _mm256_blendv_ps(_mm256_sub_ps(vone, vf1), vf1, vx1);
102 vf2 = _mm256_blendv_ps(_mm256_sub_ps(vone, vf2), vf2, vx2);
103
104 _mm256_storeu_ps(y, vf0);
105 _mm256_storeu_ps(y + 8, vf1);
106 _mm256_storeu_ps(y + 16, vf2);
107 y += 24;
108 }
109 for (; n >= 8 * sizeof(float); n -= 8 * sizeof(float)) {
110 const __m256 vx = _mm256_loadu_ps(x);
111 x += 8;
112
113 const __m256 vz = _mm256_or_ps(vx, vsign_mask);
114
115 __m256 vn = _mm256_fmadd_ps(vz, vlog2e, vmagic_bias);
116 const __m256 vs = _mm256_castsi256_ps(_mm256_slli_epi32(_mm256_castps_si256(vn), 23));
117 vn = _mm256_sub_ps(vn, vmagic_bias);
118
119 __m256 vt = _mm256_fmadd_ps(vn, vminus_ln2, vz);
120
121 __m256 vp = _mm256_fmadd_ps(vc5, vt, vc4);
122 vp = _mm256_fmadd_ps(vp, vt, vc3);
123 vp = _mm256_fmadd_ps(vp, vt, vc2);
124 vp = _mm256_fmadd_ps(vp, vt, vc1);
125
126 vt = _mm256_mul_ps(vt, vs);
127 const __m256 ve = _mm256_fmadd_ps(vt, vp, vs);
128
129 const __m256 vd = _mm256_add_ps(ve, vone);
130 __m256 vf = _mm256_div_ps(ve, vd);
131
132 vf = _mm256_andnot_ps(_mm256_cmp_ps(vz, vdenorm_cutoff, _CMP_LT_OS), vf);
133 vf = _mm256_blendv_ps(_mm256_sub_ps(vone, vf), vf, vx);
134
135 _mm256_storeu_ps(y, vf);
136 y += 8;
137 }
138 if XNN_UNLIKELY(n != 0) {
139 assert(n >= 1 * sizeof(float));
140 assert(n <= 7 * sizeof(float));
141 const __m256i vmask = _mm256_loadu_si256((const __m256i*) ((uintptr_t) ¶ms->avx2_rr1_p5.mask_table[7] - n));
142
143 const __m256 vx = _mm256_maskload_ps(x, vmask);
144
145 const __m256 vz = _mm256_or_ps(vx, vsign_mask);
146
147 __m256 vn = _mm256_fmadd_ps(vz, vlog2e, vmagic_bias);
148 const __m256 vs = _mm256_castsi256_ps(_mm256_slli_epi32(_mm256_castps_si256(vn), 23));
149 vn = _mm256_sub_ps(vn, vmagic_bias);
150
151 __m256 vt = _mm256_fmadd_ps(vn, vminus_ln2, vz);
152
153 __m256 vp = _mm256_fmadd_ps(vc5, vt, vc4);
154 vp = _mm256_fmadd_ps(vp, vt, vc3);
155 vp = _mm256_fmadd_ps(vp, vt, vc2);
156 vp = _mm256_fmadd_ps(vp, vt, vc1);
157
158 vt = _mm256_mul_ps(vt, vs);
159 const __m256 ve = _mm256_fmadd_ps(vt, vp, vs);
160
161 const __m256 vd = _mm256_add_ps(ve, vone);
162 __m256 vf = _mm256_div_ps(ve, vd);
163
164 vf = _mm256_andnot_ps(_mm256_cmp_ps(vz, vdenorm_cutoff, _CMP_LT_OS), vf);
165 vf = _mm256_blendv_ps(_mm256_sub_ps(vone, vf), vf, vx);
166
167 __m128 vf_lo = _mm256_castps256_ps128(vf);
168 if (n & (4 * sizeof(float))) {
169 _mm_storeu_ps(y, vf_lo);
170 vf_lo = _mm256_extractf128_ps(vf, 1);
171 y += 4;
172 }
173 if (n & (2 * sizeof(float))) {
174 _mm_storel_pi((__m64*) y, vf_lo);
175 vf_lo = _mm_movehl_ps(vf_lo, vf_lo);
176 y += 2;
177 }
178 if (n & (1 * sizeof(float))) {
179 _mm_store_ss(y, vf_lo);
180 }
181 }
182 }
183