1 // Auto-generated file. Do not edit!
2 // Template: src/f32-vsigmoid/avx512f-rr1-p5-scalef.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 <immintrin.h>
13
14 #include <xnnpack/common.h>
15 #include <xnnpack/intrinsics-polyfill.h>
16 #include <xnnpack/vunary.h>
17
18
xnn_f32_vsigmoid_ukernel__avx512f_rr1_p5_scalef_div_x32(size_t n,const float * x,float * y,const union xnn_f32_sigmoid_params params[restrict XNN_MIN_ELEMENTS (1)])19 void xnn_f32_vsigmoid_ukernel__avx512f_rr1_p5_scalef_div_x32(
20 size_t n,
21 const float* x,
22 float* y,
23 const union xnn_f32_sigmoid_params params[restrict XNN_MIN_ELEMENTS(1)])
24 {
25 assert(n % sizeof(float) == 0);
26
27 const __m512i vsign_mask = _mm512_set1_epi32((int) params->avx512_rr1_p5.sign_mask);
28 const __m512 vlog2e = _mm512_set1_ps(params->avx512_rr1_p5.log2e);
29 const __m512 vminus_ln2 = _mm512_set1_ps(params->avx512_rr1_p5.minus_ln2);
30 const __m512 vc5 = _mm512_set1_ps(params->avx512_rr1_p5.c5);
31 const __m512 vc4 = _mm512_set1_ps(params->avx512_rr1_p5.c4);
32 const __m512 vc3 = _mm512_set1_ps(params->avx512_rr1_p5.c3);
33 const __m512 vc2 = _mm512_set1_ps(params->avx512_rr1_p5.c2);
34 const __m512 vc1 = _mm512_set1_ps(params->avx512_rr1_p5.c1);
35 const __m512 vone = _mm512_set1_ps(params->avx512_rr1_p5.one);
36
37 for (; n >= 32 * sizeof(float); n -= 32 * sizeof(float)) {
38 const __m512 vx0 = _mm512_loadu_ps(x);
39 const __m512 vx1 = _mm512_loadu_ps(x + 16);
40 x += 32;
41
42 const __m512 vz0 = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx0), vsign_mask));
43 const __m512 vz1 = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx1), vsign_mask));
44
45 __m512 vn0 = _mm512_mul_ps(vz0, vlog2e);
46 __m512 vn1 = _mm512_mul_ps(vz1, vlog2e);
47
48 vn0 = _mm512_roundscale_ps(vn0, 0);
49 vn1 = _mm512_roundscale_ps(vn1, 0);
50
51 __m512 vt0 = _mm512_fmadd_ps(vn0, vminus_ln2, vz0);
52 __m512 vt1 = _mm512_fmadd_ps(vn1, vminus_ln2, vz1);
53
54 __m512 vp0 = _mm512_fmadd_ps(vc5, vt0, vc4);
55 __m512 vp1 = _mm512_fmadd_ps(vc5, vt1, vc4);
56
57 vp0 = _mm512_fmadd_ps(vp0, vt0, vc3);
58 vp1 = _mm512_fmadd_ps(vp1, vt1, vc3);
59
60 vp0 = _mm512_fmadd_ps(vp0, vt0, vc2);
61 vp1 = _mm512_fmadd_ps(vp1, vt1, vc2);
62
63 vp0 = _mm512_fmadd_ps(vp0, vt0, vc1);
64 vp1 = _mm512_fmadd_ps(vp1, vt1, vc1);
65
66 vp0 = _mm512_fmadd_ps(vp0, vt0, vone);
67 vp1 = _mm512_fmadd_ps(vp1, vt1, vone);
68
69 const __m512 ve0 = _mm512_scalef_ps(vp0, vn0);
70 const __m512 ve1 = _mm512_scalef_ps(vp1, vn1);
71
72 const __m512 vd0 = _mm512_add_ps(ve0, vone);
73 const __m512 vd1 = _mm512_add_ps(ve1, vone);
74
75 __m512 vf0 = _mm512_div_ps(ve0, vd0);
76 __m512 vf1 = _mm512_div_ps(ve1, vd1);
77
78 vf0 = _mm512_mask_sub_ps(vf0, _mm512_testn_epi32_mask(_mm512_castps_si512(vx0), vsign_mask), vone, vf0);
79 vf1 = _mm512_mask_sub_ps(vf1, _mm512_testn_epi32_mask(_mm512_castps_si512(vx1), vsign_mask), vone, vf1);
80
81 _mm512_storeu_ps(y, vf0);
82 _mm512_storeu_ps(y + 16, vf1);
83 y += 32;
84 }
85 for (; n >= 16 * sizeof(float); n -= 16 * sizeof(float)) {
86 const __m512 vx = _mm512_loadu_ps(x);
87 x += 16;
88
89 const __m512 vz = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx), vsign_mask));
90
91 const __m512 vn = _mm512_roundscale_ps(_mm512_mul_ps(vz, vlog2e), 0);
92
93 __m512 vt = _mm512_fmadd_ps(vn, vminus_ln2, vz);
94
95 __m512 vp = _mm512_fmadd_ps(vc5, vt, vc4);
96 vp = _mm512_fmadd_ps(vp, vt, vc3);
97 vp = _mm512_fmadd_ps(vp, vt, vc2);
98 vp = _mm512_fmadd_ps(vp, vt, vc1);
99 vp = _mm512_fmadd_ps(vp, vt, vone);
100
101 const __m512 ve = _mm512_scalef_ps(vp, vn);
102 const __m512 vd = _mm512_add_ps(ve, vone);
103
104 __m512 vf = _mm512_div_ps(ve, vd);
105
106 vf = _mm512_mask_sub_ps(vf, _mm512_testn_epi32_mask(_mm512_castps_si512(vx), vsign_mask), vone, vf);
107
108 _mm512_storeu_ps(y, vf);
109 y += 16;
110 }
111 if XNN_UNLIKELY(n != 0) {
112 assert(n >= 1 * sizeof(float));
113 assert(n <= 15 * sizeof(float));
114
115 // Prepare mask for valid 32-bit elements (depends on n).
116 n >>= 2 /* log2(sizeof(float)) */;
117 const __mmask16 vmask = _cvtu32_mask16((uint16_t) ((uint32_t) (UINT32_C(1) << n) - UINT32_C(1)));
118
119 const __m512 vx = _mm512_maskz_loadu_ps(vmask, x);
120 const __m512 vz = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx), vsign_mask));
121
122 const __m512 vn = _mm512_roundscale_ps(_mm512_mul_ps(vz, vlog2e), 0);
123
124 __m512 vt = _mm512_fmadd_ps(vn, vminus_ln2, vz);
125
126 __m512 vp = _mm512_fmadd_ps(vc5, vt, vc4);
127 vp = _mm512_fmadd_ps(vp, vt, vc3);
128 vp = _mm512_fmadd_ps(vp, vt, vc2);
129 vp = _mm512_fmadd_ps(vp, vt, vc1);
130 vp = _mm512_fmadd_ps(vp, vt, vone);
131
132 const __m512 ve = _mm512_scalef_ps(vp, vn);
133 const __m512 vd = _mm512_add_ps(ve, vone);
134
135 __m512 vf = _mm512_div_ps(ve, vd);
136
137 vf = _mm512_mask_sub_ps(vf, _mm512_testn_epi32_mask(_mm512_castps_si512(vx), vsign_mask), vone, vf);
138
139 _mm512_mask_storeu_ps(y, vmask, vf);
140 }
141 }
142