1 // Auto-generated file. Do not edit!
2 // Template: src/f32-vsigmoid/avx512f-rr1-lut16-p3-perm-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_lut16_p3_perm_scalef_nr1fma_x64(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_lut16_p3_perm_scalef_nr1fma_x64(
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_lut16_p3.sign_mask);
28 const __m512 vmagic_bias = _mm512_set1_ps(params->avx512_rr1_lut16_p3.magic_bias);
29 const __m512 vlog2e = _mm512_set1_ps(params->avx512_rr1_lut16_p3.log2e);
30 const __m512 vtable = _mm512_load_ps(params->avx512_rr1_lut16_p3.table);
31 const __m512 vminus_ln2 = _mm512_set1_ps(params->avx512_rr1_lut16_p3.minus_ln2);
32 const __m512 vc3 = _mm512_set1_ps(params->avx512_rr1_lut16_p3.c3);
33 const __m512 vc2 = _mm512_set1_ps(params->avx512_rr1_lut16_p3.c2);
34 const __m512 vone = _mm512_set1_ps(params->avx512_rr1_lut16_p3.one);
35
36 for (; n >= 64 * sizeof(float); n -= 64 * sizeof(float)) {
37 const __m512 vx0 = _mm512_loadu_ps(x);
38 const __m512 vx1 = _mm512_loadu_ps(x + 16);
39 const __m512 vx2 = _mm512_loadu_ps(x + 32);
40 const __m512 vx3 = _mm512_loadu_ps(x + 48);
41 x += 64;
42
43 const __m512 vz0 = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx0), vsign_mask));
44 const __m512 vz1 = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx1), vsign_mask));
45 const __m512 vz2 = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx2), vsign_mask));
46 const __m512 vz3 = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx3), vsign_mask));
47
48 __m512 vn0 = _mm512_fmadd_ps(vz0, vlog2e, vmagic_bias);
49 __m512 vn1 = _mm512_fmadd_ps(vz1, vlog2e, vmagic_bias);
50 __m512 vn2 = _mm512_fmadd_ps(vz2, vlog2e, vmagic_bias);
51 __m512 vn3 = _mm512_fmadd_ps(vz3, vlog2e, vmagic_bias);
52
53 const __m512 vl0 = _mm512_permutexvar_ps(_mm512_castps_si512(vn0), vtable);
54 const __m512 vl1 = _mm512_permutexvar_ps(_mm512_castps_si512(vn1), vtable);
55 const __m512 vl2 = _mm512_permutexvar_ps(_mm512_castps_si512(vn2), vtable);
56 const __m512 vl3 = _mm512_permutexvar_ps(_mm512_castps_si512(vn3), vtable);
57
58 vn0 = _mm512_sub_ps(vn0, vmagic_bias);
59 vn1 = _mm512_sub_ps(vn1, vmagic_bias);
60 vn2 = _mm512_sub_ps(vn2, vmagic_bias);
61 vn3 = _mm512_sub_ps(vn3, vmagic_bias);
62
63 __m512 vt0 = _mm512_fmadd_ps(vn0, vminus_ln2, vz0);
64 __m512 vt1 = _mm512_fmadd_ps(vn1, vminus_ln2, vz1);
65 __m512 vt2 = _mm512_fmadd_ps(vn2, vminus_ln2, vz2);
66 __m512 vt3 = _mm512_fmadd_ps(vn3, vminus_ln2, vz3);
67
68 __m512 vp0 = _mm512_fmadd_ps(vt0, vc3, vc2);
69 __m512 vp1 = _mm512_fmadd_ps(vt1, vc3, vc2);
70 __m512 vp2 = _mm512_fmadd_ps(vt2, vc3, vc2);
71 __m512 vp3 = _mm512_fmadd_ps(vt3, vc3, vc2);
72
73 vp0 = _mm512_mul_ps(vp0, vt0);
74 vp1 = _mm512_mul_ps(vp1, vt1);
75 vp2 = _mm512_mul_ps(vp2, vt2);
76 vp3 = _mm512_mul_ps(vp3, vt3);
77
78 vp0 = _mm512_fmadd_ps(vt0, vp0, vt0);
79 vp1 = _mm512_fmadd_ps(vt1, vp1, vt1);
80 vp2 = _mm512_fmadd_ps(vt2, vp2, vt2);
81 vp3 = _mm512_fmadd_ps(vt3, vp3, vt3);
82
83 vp0 = _mm512_fmadd_ps(vl0, vp0, vl0);
84 vp1 = _mm512_fmadd_ps(vl1, vp1, vl1);
85 vp2 = _mm512_fmadd_ps(vl2, vp2, vl2);
86 vp3 = _mm512_fmadd_ps(vl3, vp3, vl3);
87
88 const __m512 ve0 = _mm512_scalef_ps(vp0, vn0);
89 const __m512 ve1 = _mm512_scalef_ps(vp1, vn1);
90 const __m512 ve2 = _mm512_scalef_ps(vp2, vn2);
91 const __m512 ve3 = _mm512_scalef_ps(vp3, vn3);
92
93 const __m512 vd0 = _mm512_add_ps(ve0, vone);
94 const __m512 vd1 = _mm512_add_ps(ve1, vone);
95 const __m512 vd2 = _mm512_add_ps(ve2, vone);
96 const __m512 vd3 = _mm512_add_ps(ve3, vone);
97
98 __m512 vr0 = _mm512_rcp14_ps(vd0);
99 __m512 vr1 = _mm512_rcp14_ps(vd1);
100 __m512 vr2 = _mm512_rcp14_ps(vd2);
101 __m512 vr3 = _mm512_rcp14_ps(vd3);
102
103 vr0 = _mm512_fmadd_ps(_mm512_fnmadd_ps(vr0, vd0, vone), vr0, vr0);
104 vr1 = _mm512_fmadd_ps(_mm512_fnmadd_ps(vr1, vd1, vone), vr1, vr1);
105 vr2 = _mm512_fmadd_ps(_mm512_fnmadd_ps(vr2, vd2, vone), vr2, vr2);
106 vr3 = _mm512_fmadd_ps(_mm512_fnmadd_ps(vr3, vd3, vone), vr3, vr3);
107
108 __m512 vf0 = _mm512_mul_ps(ve0, vr0);
109 __m512 vf1 = _mm512_mul_ps(ve1, vr1);
110 __m512 vf2 = _mm512_mul_ps(ve2, vr2);
111 __m512 vf3 = _mm512_mul_ps(ve3, vr3);
112
113
114 vf0 = _mm512_mask_sub_ps(vf0, _mm512_testn_epi32_mask(_mm512_castps_si512(vx0), vsign_mask), vone, vf0);
115 vf1 = _mm512_mask_sub_ps(vf1, _mm512_testn_epi32_mask(_mm512_castps_si512(vx1), vsign_mask), vone, vf1);
116 vf2 = _mm512_mask_sub_ps(vf2, _mm512_testn_epi32_mask(_mm512_castps_si512(vx2), vsign_mask), vone, vf2);
117 vf3 = _mm512_mask_sub_ps(vf3, _mm512_testn_epi32_mask(_mm512_castps_si512(vx3), vsign_mask), vone, vf3);
118
119 _mm512_storeu_ps(y, vf0);
120 _mm512_storeu_ps(y + 16, vf1);
121 _mm512_storeu_ps(y + 32, vf2);
122 _mm512_storeu_ps(y + 48, vf3);
123 y += 64;
124 }
125 for (; n >= 16 * sizeof(float); n -= 16 * sizeof(float)) {
126 const __m512 vx = _mm512_loadu_ps(x);
127 x += 16;
128
129 const __m512 vz = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx), vsign_mask));
130
131 __m512 vn = _mm512_fmadd_ps(vz, vlog2e, vmagic_bias);
132 const __m512 vl = _mm512_permutexvar_ps(_mm512_castps_si512(vn), vtable);
133 vn = _mm512_sub_ps(vn, vmagic_bias);
134
135 __m512 vt = _mm512_fmadd_ps(vn, vminus_ln2, vz);
136
137 __m512 vp = _mm512_fmadd_ps(vt, vc3, vc2);
138 vp = _mm512_mul_ps(vp, vt);
139 vp = _mm512_fmadd_ps(vt, vp, vt);
140 vp = _mm512_fmadd_ps(vl, vp, vl);
141
142 const __m512 ve = _mm512_scalef_ps(vp, vn);
143 const __m512 vd = _mm512_add_ps(ve, vone);
144
145 __m512 vr = _mm512_rcp14_ps(vd);
146 vr = _mm512_fmadd_ps(_mm512_fnmadd_ps(vr, vd, vone), vr, vr);
147
148 __m512 vf = _mm512_mul_ps(ve, vr);
149
150 vf = _mm512_mask_sub_ps(vf, _mm512_testn_epi32_mask(_mm512_castps_si512(vx), vsign_mask), vone, vf);
151
152 _mm512_storeu_ps(y, vf);
153 y += 16;
154 }
155 if XNN_UNLIKELY(n != 0) {
156 assert(n >= 1 * sizeof(float));
157 assert(n <= 15 * sizeof(float));
158
159 // Prepare mask for valid 32-bit elements (depends on n).
160 n >>= 2 /* log2(sizeof(float)) */;
161 const __mmask16 vmask = _cvtu32_mask16((uint16_t) ((uint32_t) (UINT32_C(1) << n) - UINT32_C(1)));
162
163 const __m512 vx = _mm512_maskz_loadu_ps(vmask, x);
164 const __m512 vz = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx), vsign_mask));
165
166 __m512 vn = _mm512_fmadd_ps(vz, vlog2e, vmagic_bias);
167 const __m512 vl = _mm512_permutexvar_ps(_mm512_castps_si512(vn), vtable);
168 vn = _mm512_sub_ps(vn, vmagic_bias);
169
170 __m512 vt = _mm512_fmadd_ps(vn, vminus_ln2, vz);
171
172 __m512 vp = _mm512_fmadd_ps(vt, vc3, vc2);
173 vp = _mm512_mul_ps(vp, vt);
174 vp = _mm512_fmadd_ps(vt, vp, vt);
175 vp = _mm512_fmadd_ps(vl, vp, vl);
176
177 const __m512 ve = _mm512_scalef_ps(vp, vn);
178 const __m512 vd = _mm512_add_ps(ve, vone);
179
180 __m512 vr = _mm512_rcp14_ps(vd);
181 vr = _mm512_fmadd_ps(_mm512_fnmadd_ps(vr, vd, vone), vr, vr);
182
183 __m512 vf = _mm512_mul_ps(ve, vr);
184
185 vf = _mm512_mask_sub_ps(vf, _mm512_testn_epi32_mask(_mm512_castps_si512(vx), vsign_mask), vone, vf);
186
187 _mm512_mask_storeu_ps(y, vmask, vf);
188 }
189 }
190