1 // Auto-generated file. Do not edit!
2 // Template: src/f32-sigmoid/avx512f-lut32-p2-perm2-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_sigmoid_ukernel__avx512f_rr2_lut32_p2_perm2_scalef_div_x96(size_t n,const float * x,float * y,const void * params)19 void xnn_f32_sigmoid_ukernel__avx512f_rr2_lut32_p2_perm2_scalef_div_x96(
20 size_t n,
21 const float* x,
22 float* y,
23 const void* params)
24 {
25 assert(n % sizeof(float) == 0);
26
27 const __m512i vsign_mask = _mm512_set1_epi32(0x80000000);
28 const __m512 vmagic_bias = _mm512_set1_ps(0x1.800000p18f);
29 const __m512 vlog2e = _mm512_set1_ps(0x1.715476p0f);
30 const __m512 vtable_hi = _mm512_set_ps(
31 0x1.F50766p+0f, 0x1.EA4AFAp+0f, 0x1.DFC974p+0f, 0x1.D5818Ep+0f,
32 0x1.CB720Ep+0f, 0x1.C199BEp+0f, 0x1.B7F770p+0f, 0x1.AE89FAp+0f,
33 0x1.A5503Cp+0f, 0x1.9C4918p+0f, 0x1.93737Cp+0f, 0x1.8ACE54p+0f,
34 0x1.82589Ap+0f, 0x1.7A1148p+0f, 0x1.71F75Ep+0f, 0x1.6A09E6p+0f);
35 const __m512 vtable_lo = _mm512_set_ps(
36 0x1.6247ECp+0f, 0x1.5AB07Ep+0f, 0x1.5342B6p+0f, 0x1.4BFDAEp+0f,
37 0x1.44E086p+0f, 0x1.3DEA64p+0f, 0x1.371A74p+0f, 0x1.306FE0p+0f,
38 0x1.29E9E0p+0f, 0x1.2387A6p+0f, 0x1.1D4874p+0f, 0x1.172B84p+0f,
39 0x1.11301Ep+0f, 0x1.0B5586p+0f, 0x1.059B0Ep+0f, 0x1.000000p+0f);
40 const __m512 vminus_ln2_hi = _mm512_set1_ps(-0x1.62E43p-1f);
41 const __m512 vminus_ln2_lo = _mm512_set1_ps(0x1.05C61p-29f);
42 const __m512 vc2 = _mm512_set1_ps(0x1.000000p-1f);
43 const __m512 vc1 = _mm512_set1_ps(0x1.0000F6p-0f);
44 const __m512 vone = _mm512_set1_ps(1.0f);
45
46 for (; n >= 96 * sizeof(float); n -= 96 * sizeof(float)) {
47 const __m512 vx0 = _mm512_loadu_ps(x);
48 const __m512 vx1 = _mm512_loadu_ps(x + 16);
49 const __m512 vx2 = _mm512_loadu_ps(x + 32);
50 const __m512 vx3 = _mm512_loadu_ps(x + 48);
51 const __m512 vx4 = _mm512_loadu_ps(x + 64);
52 const __m512 vx5 = _mm512_loadu_ps(x + 80);
53 x += 96;
54
55 const __m512 vz0 = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx0), vsign_mask));
56 const __m512 vz1 = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx1), vsign_mask));
57 const __m512 vz2 = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx2), vsign_mask));
58 const __m512 vz3 = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx3), vsign_mask));
59 const __m512 vz4 = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx4), vsign_mask));
60 const __m512 vz5 = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx5), vsign_mask));
61
62 __m512 vn0 = _mm512_fmadd_ps(vz0, vlog2e, vmagic_bias);
63 __m512 vn1 = _mm512_fmadd_ps(vz1, vlog2e, vmagic_bias);
64 __m512 vn2 = _mm512_fmadd_ps(vz2, vlog2e, vmagic_bias);
65 __m512 vn3 = _mm512_fmadd_ps(vz3, vlog2e, vmagic_bias);
66 __m512 vn4 = _mm512_fmadd_ps(vz4, vlog2e, vmagic_bias);
67 __m512 vn5 = _mm512_fmadd_ps(vz5, vlog2e, vmagic_bias);
68
69 const __m512 vl0 = _mm512_permutex2var_ps(vtable_lo, _mm512_castps_si512(vn0), vtable_hi);
70 const __m512 vl1 = _mm512_permutex2var_ps(vtable_lo, _mm512_castps_si512(vn1), vtable_hi);
71 const __m512 vl2 = _mm512_permutex2var_ps(vtable_lo, _mm512_castps_si512(vn2), vtable_hi);
72 const __m512 vl3 = _mm512_permutex2var_ps(vtable_lo, _mm512_castps_si512(vn3), vtable_hi);
73 const __m512 vl4 = _mm512_permutex2var_ps(vtable_lo, _mm512_castps_si512(vn4), vtable_hi);
74 const __m512 vl5 = _mm512_permutex2var_ps(vtable_lo, _mm512_castps_si512(vn5), vtable_hi);
75
76 vn0 = _mm512_sub_ps(vn0, vmagic_bias);
77 vn1 = _mm512_sub_ps(vn1, vmagic_bias);
78 vn2 = _mm512_sub_ps(vn2, vmagic_bias);
79 vn3 = _mm512_sub_ps(vn3, vmagic_bias);
80 vn4 = _mm512_sub_ps(vn4, vmagic_bias);
81 vn5 = _mm512_sub_ps(vn5, vmagic_bias);
82
83 __m512 vt0 = _mm512_fmadd_ps(vn0, vminus_ln2_hi, vz0);
84 __m512 vt1 = _mm512_fmadd_ps(vn1, vminus_ln2_hi, vz1);
85 __m512 vt2 = _mm512_fmadd_ps(vn2, vminus_ln2_hi, vz2);
86 __m512 vt3 = _mm512_fmadd_ps(vn3, vminus_ln2_hi, vz3);
87 __m512 vt4 = _mm512_fmadd_ps(vn4, vminus_ln2_hi, vz4);
88 __m512 vt5 = _mm512_fmadd_ps(vn5, vminus_ln2_hi, vz5);
89
90 vt0 = _mm512_fmadd_ps(vn0, vminus_ln2_lo, vt0);
91 vt1 = _mm512_fmadd_ps(vn1, vminus_ln2_lo, vt1);
92 vt2 = _mm512_fmadd_ps(vn2, vminus_ln2_lo, vt2);
93 vt3 = _mm512_fmadd_ps(vn3, vminus_ln2_lo, vt3);
94 vt4 = _mm512_fmadd_ps(vn4, vminus_ln2_lo, vt4);
95 vt5 = _mm512_fmadd_ps(vn5, vminus_ln2_lo, vt5);
96
97 __m512 vp0 = _mm512_fmadd_ps(vt0, vc2, vc1);
98 __m512 vp1 = _mm512_fmadd_ps(vt1, vc2, vc1);
99 __m512 vp2 = _mm512_fmadd_ps(vt2, vc2, vc1);
100 __m512 vp3 = _mm512_fmadd_ps(vt3, vc2, vc1);
101 __m512 vp4 = _mm512_fmadd_ps(vt4, vc2, vc1);
102 __m512 vp5 = _mm512_fmadd_ps(vt5, vc2, vc1);
103
104 vt0 = _mm512_mul_ps(vt0, vl0);
105 vt1 = _mm512_mul_ps(vt1, vl1);
106 vt2 = _mm512_mul_ps(vt2, vl2);
107 vt3 = _mm512_mul_ps(vt3, vl3);
108 vt4 = _mm512_mul_ps(vt4, vl4);
109 vt5 = _mm512_mul_ps(vt5, vl5);
110
111 vp0 = _mm512_fmadd_ps(vt0, vp0, vl0);
112 vp1 = _mm512_fmadd_ps(vt1, vp1, vl1);
113 vp2 = _mm512_fmadd_ps(vt2, vp2, vl2);
114 vp3 = _mm512_fmadd_ps(vt3, vp3, vl3);
115 vp4 = _mm512_fmadd_ps(vt4, vp4, vl4);
116 vp5 = _mm512_fmadd_ps(vt5, vp5, vl5);
117
118 const __m512 ve0 = _mm512_scalef_ps(vp0, vn0);
119 const __m512 ve1 = _mm512_scalef_ps(vp1, vn1);
120 const __m512 ve2 = _mm512_scalef_ps(vp2, vn2);
121 const __m512 ve3 = _mm512_scalef_ps(vp3, vn3);
122 const __m512 ve4 = _mm512_scalef_ps(vp4, vn4);
123 const __m512 ve5 = _mm512_scalef_ps(vp5, vn5);
124
125 const __m512 vd0 = _mm512_add_ps(ve0, vone);
126 const __m512 vd1 = _mm512_add_ps(ve1, vone);
127 const __m512 vd2 = _mm512_add_ps(ve2, vone);
128 const __m512 vd3 = _mm512_add_ps(ve3, vone);
129 const __m512 vd4 = _mm512_add_ps(ve4, vone);
130 const __m512 vd5 = _mm512_add_ps(ve5, vone);
131
132 __m512 vf0 = _mm512_div_ps(ve0, vd0);
133 __m512 vf1 = _mm512_div_ps(ve1, vd1);
134 __m512 vf2 = _mm512_div_ps(ve2, vd2);
135 __m512 vf3 = _mm512_div_ps(ve3, vd3);
136 __m512 vf4 = _mm512_div_ps(ve4, vd4);
137 __m512 vf5 = _mm512_div_ps(ve5, vd5);
138
139 vf0 = _mm512_mask_sub_ps(vf0, _mm512_testn_epi32_mask(_mm512_castps_si512(vx0), vsign_mask), vone, vf0);
140 vf1 = _mm512_mask_sub_ps(vf1, _mm512_testn_epi32_mask(_mm512_castps_si512(vx1), vsign_mask), vone, vf1);
141 vf2 = _mm512_mask_sub_ps(vf2, _mm512_testn_epi32_mask(_mm512_castps_si512(vx2), vsign_mask), vone, vf2);
142 vf3 = _mm512_mask_sub_ps(vf3, _mm512_testn_epi32_mask(_mm512_castps_si512(vx3), vsign_mask), vone, vf3);
143 vf4 = _mm512_mask_sub_ps(vf4, _mm512_testn_epi32_mask(_mm512_castps_si512(vx4), vsign_mask), vone, vf4);
144 vf5 = _mm512_mask_sub_ps(vf5, _mm512_testn_epi32_mask(_mm512_castps_si512(vx5), vsign_mask), vone, vf5);
145
146 _mm512_storeu_ps(y, vf0);
147 _mm512_storeu_ps(y + 16, vf1);
148 _mm512_storeu_ps(y + 32, vf2);
149 _mm512_storeu_ps(y + 48, vf3);
150 _mm512_storeu_ps(y + 64, vf4);
151 _mm512_storeu_ps(y + 80, vf5);
152 y += 96;
153 }
154 for (; n >= 16 * sizeof(float); n -= 16 * sizeof(float)) {
155 const __m512 vx = _mm512_loadu_ps(x);
156 x += 16;
157
158 const __m512 vz = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx), vsign_mask));
159
160 __m512 vn = _mm512_fmadd_ps(vz, vlog2e, vmagic_bias);
161 const __m512 vl = _mm512_permutex2var_ps(vtable_lo, _mm512_castps_si512(vn), vtable_hi);
162 vn = _mm512_sub_ps(vn, vmagic_bias);
163
164 __m512 vt = _mm512_fmadd_ps(vn, vminus_ln2_hi, vz);
165 vt = _mm512_fmadd_ps(vn, vminus_ln2_lo, vt);
166
167 __m512 vp = _mm512_fmadd_ps(vt, vc2, vc1);
168 vt = _mm512_mul_ps(vt, vl);
169 vp = _mm512_fmadd_ps(vt, vp, vl);
170
171 const __m512 ve = _mm512_scalef_ps(vp, vn);
172 const __m512 vd = _mm512_add_ps(ve, vone);
173
174 __m512 vf = _mm512_div_ps(ve, vd);
175
176 vf = _mm512_mask_sub_ps(vf, _mm512_testn_epi32_mask(_mm512_castps_si512(vx), vsign_mask), vone, vf);
177
178 _mm512_storeu_ps(y, vf);
179 y += 16;
180 }
181 if XNN_UNLIKELY(n != 0) {
182 assert(n >= 1 * sizeof(float));
183 assert(n <= 15 * sizeof(float));
184
185 // Prepare mask for valid 32-bit elements (depends on n).
186 n >>= 2 /* log2(sizeof(float)) */;
187 const __mmask16 vmask = _cvtu32_mask16((uint16_t) ((uint32_t) (UINT32_C(1) << n) - UINT32_C(1)));
188
189 const __m512 vx = _mm512_maskz_loadu_ps(vmask, x);
190 const __m512 vz = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx), vsign_mask));
191
192 __m512 vn = _mm512_fmadd_ps(vz, vlog2e, vmagic_bias);
193 const __m512 vl = _mm512_permutex2var_ps(vtable_lo, _mm512_castps_si512(vn), vtable_hi);
194 vn = _mm512_sub_ps(vn, vmagic_bias);
195
196 __m512 vt = _mm512_fmadd_ps(vn, vminus_ln2_hi, vz);
197 vt = _mm512_fmadd_ps(vn, vminus_ln2_lo, vt);
198
199 __m512 vp = _mm512_fmadd_ps(vt, vc2, vc1);
200 vt = _mm512_mul_ps(vt, vl);
201 vp = _mm512_fmadd_ps(vt, vp, vl);
202
203 const __m512 ve = _mm512_scalef_ps(vp, vn);
204 const __m512 vd = _mm512_add_ps(ve, vone);
205
206 __m512 vf = _mm512_div_ps(ve, vd);
207
208 vf = _mm512_mask_sub_ps(vf, _mm512_testn_epi32_mask(_mm512_castps_si512(vx), vsign_mask), vone, vf);
209
210 _mm512_mask_storeu_ps(y, vmask, vf);
211 }
212 }
213