1 // Auto-generated file. Do not edit!
2 //   Template: src/f32-vsigmoid/avx512f-rr2-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_vsigmoid_ukernel__avx512f_rr2_lut32_p2_perm2_scalef_nr1fma_x96(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_rr2_lut32_p2_perm2_scalef_nr1fma_x96(
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_rr2_lut32_p2.sign_mask);
28   const __m512 vmagic_bias = _mm512_set1_ps(params->avx512_rr2_lut32_p2.magic_bias);
29   const __m512 vlog2e = _mm512_set1_ps(params->avx512_rr2_lut32_p2.log2e);
30   const __m512 vtable_lo = _mm512_load_ps(params->avx512_rr2_lut32_p2.table_lo);
31   const __m512 vtable_hi = _mm512_load_ps(params->avx512_rr2_lut32_p2.table_hi);
32   const __m512 vminus_ln2_hi = _mm512_set1_ps(params->avx512_rr2_lut32_p2.minus_ln2_hi);
33   const __m512 vminus_ln2_lo = _mm512_set1_ps(params->avx512_rr2_lut32_p2.minus_ln2_lo);
34   const __m512 vc2 = _mm512_set1_ps(params->avx512_rr2_lut32_p2.c2);
35   const __m512 vc1 = _mm512_set1_ps(params->avx512_rr2_lut32_p2.c1);
36   const __m512 vone = _mm512_set1_ps(params->avx512_rr2_lut32_p2.one);
37 
38   for (; n >= 96 * sizeof(float); n -= 96 * sizeof(float)) {
39     const __m512 vx0 = _mm512_loadu_ps(x);
40     const __m512 vx1 = _mm512_loadu_ps(x + 16);
41     const __m512 vx2 = _mm512_loadu_ps(x + 32);
42     const __m512 vx3 = _mm512_loadu_ps(x + 48);
43     const __m512 vx4 = _mm512_loadu_ps(x + 64);
44     const __m512 vx5 = _mm512_loadu_ps(x + 80);
45     x += 96;
46 
47     const __m512 vz0 = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx0), vsign_mask));
48     const __m512 vz1 = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx1), vsign_mask));
49     const __m512 vz2 = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx2), vsign_mask));
50     const __m512 vz3 = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx3), vsign_mask));
51     const __m512 vz4 = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx4), vsign_mask));
52     const __m512 vz5 = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx5), vsign_mask));
53 
54     __m512 vn0 = _mm512_fmadd_ps(vz0, vlog2e, vmagic_bias);
55     __m512 vn1 = _mm512_fmadd_ps(vz1, vlog2e, vmagic_bias);
56     __m512 vn2 = _mm512_fmadd_ps(vz2, vlog2e, vmagic_bias);
57     __m512 vn3 = _mm512_fmadd_ps(vz3, vlog2e, vmagic_bias);
58     __m512 vn4 = _mm512_fmadd_ps(vz4, vlog2e, vmagic_bias);
59     __m512 vn5 = _mm512_fmadd_ps(vz5, vlog2e, vmagic_bias);
60 
61     const __m512 vl0 = _mm512_permutex2var_ps(vtable_lo, _mm512_castps_si512(vn0), vtable_hi);
62     const __m512 vl1 = _mm512_permutex2var_ps(vtable_lo, _mm512_castps_si512(vn1), vtable_hi);
63     const __m512 vl2 = _mm512_permutex2var_ps(vtable_lo, _mm512_castps_si512(vn2), vtable_hi);
64     const __m512 vl3 = _mm512_permutex2var_ps(vtable_lo, _mm512_castps_si512(vn3), vtable_hi);
65     const __m512 vl4 = _mm512_permutex2var_ps(vtable_lo, _mm512_castps_si512(vn4), vtable_hi);
66     const __m512 vl5 = _mm512_permutex2var_ps(vtable_lo, _mm512_castps_si512(vn5), vtable_hi);
67 
68     vn0 = _mm512_sub_ps(vn0, vmagic_bias);
69     vn1 = _mm512_sub_ps(vn1, vmagic_bias);
70     vn2 = _mm512_sub_ps(vn2, vmagic_bias);
71     vn3 = _mm512_sub_ps(vn3, vmagic_bias);
72     vn4 = _mm512_sub_ps(vn4, vmagic_bias);
73     vn5 = _mm512_sub_ps(vn5, vmagic_bias);
74 
75     __m512 vt0 = _mm512_fmadd_ps(vn0, vminus_ln2_hi, vz0);
76     __m512 vt1 = _mm512_fmadd_ps(vn1, vminus_ln2_hi, vz1);
77     __m512 vt2 = _mm512_fmadd_ps(vn2, vminus_ln2_hi, vz2);
78     __m512 vt3 = _mm512_fmadd_ps(vn3, vminus_ln2_hi, vz3);
79     __m512 vt4 = _mm512_fmadd_ps(vn4, vminus_ln2_hi, vz4);
80     __m512 vt5 = _mm512_fmadd_ps(vn5, vminus_ln2_hi, vz5);
81 
82     vt0 = _mm512_fmadd_ps(vn0, vminus_ln2_lo, vt0);
83     vt1 = _mm512_fmadd_ps(vn1, vminus_ln2_lo, vt1);
84     vt2 = _mm512_fmadd_ps(vn2, vminus_ln2_lo, vt2);
85     vt3 = _mm512_fmadd_ps(vn3, vminus_ln2_lo, vt3);
86     vt4 = _mm512_fmadd_ps(vn4, vminus_ln2_lo, vt4);
87     vt5 = _mm512_fmadd_ps(vn5, vminus_ln2_lo, vt5);
88 
89     __m512 vp0 = _mm512_fmadd_ps(vt0, vc2, vc1);
90     __m512 vp1 = _mm512_fmadd_ps(vt1, vc2, vc1);
91     __m512 vp2 = _mm512_fmadd_ps(vt2, vc2, vc1);
92     __m512 vp3 = _mm512_fmadd_ps(vt3, vc2, vc1);
93     __m512 vp4 = _mm512_fmadd_ps(vt4, vc2, vc1);
94     __m512 vp5 = _mm512_fmadd_ps(vt5, vc2, vc1);
95 
96     vt0 = _mm512_mul_ps(vt0, vl0);
97     vt1 = _mm512_mul_ps(vt1, vl1);
98     vt2 = _mm512_mul_ps(vt2, vl2);
99     vt3 = _mm512_mul_ps(vt3, vl3);
100     vt4 = _mm512_mul_ps(vt4, vl4);
101     vt5 = _mm512_mul_ps(vt5, vl5);
102 
103     vp0 = _mm512_fmadd_ps(vt0, vp0, vl0);
104     vp1 = _mm512_fmadd_ps(vt1, vp1, vl1);
105     vp2 = _mm512_fmadd_ps(vt2, vp2, vl2);
106     vp3 = _mm512_fmadd_ps(vt3, vp3, vl3);
107     vp4 = _mm512_fmadd_ps(vt4, vp4, vl4);
108     vp5 = _mm512_fmadd_ps(vt5, vp5, vl5);
109 
110     const __m512 ve0 = _mm512_scalef_ps(vp0, vn0);
111     const __m512 ve1 = _mm512_scalef_ps(vp1, vn1);
112     const __m512 ve2 = _mm512_scalef_ps(vp2, vn2);
113     const __m512 ve3 = _mm512_scalef_ps(vp3, vn3);
114     const __m512 ve4 = _mm512_scalef_ps(vp4, vn4);
115     const __m512 ve5 = _mm512_scalef_ps(vp5, vn5);
116 
117     const __m512 vd0 = _mm512_add_ps(ve0, vone);
118     const __m512 vd1 = _mm512_add_ps(ve1, vone);
119     const __m512 vd2 = _mm512_add_ps(ve2, vone);
120     const __m512 vd3 = _mm512_add_ps(ve3, vone);
121     const __m512 vd4 = _mm512_add_ps(ve4, vone);
122     const __m512 vd5 = _mm512_add_ps(ve5, vone);
123 
124     __m512 vr0 = _mm512_rcp14_ps(vd0);
125     __m512 vr1 = _mm512_rcp14_ps(vd1);
126     __m512 vr2 = _mm512_rcp14_ps(vd2);
127     __m512 vr3 = _mm512_rcp14_ps(vd3);
128     __m512 vr4 = _mm512_rcp14_ps(vd4);
129     __m512 vr5 = _mm512_rcp14_ps(vd5);
130 
131     vr0 = _mm512_fmadd_ps(_mm512_fnmadd_ps(vr0, vd0, vone), vr0, vr0);
132     vr1 = _mm512_fmadd_ps(_mm512_fnmadd_ps(vr1, vd1, vone), vr1, vr1);
133     vr2 = _mm512_fmadd_ps(_mm512_fnmadd_ps(vr2, vd2, vone), vr2, vr2);
134     vr3 = _mm512_fmadd_ps(_mm512_fnmadd_ps(vr3, vd3, vone), vr3, vr3);
135     vr4 = _mm512_fmadd_ps(_mm512_fnmadd_ps(vr4, vd4, vone), vr4, vr4);
136     vr5 = _mm512_fmadd_ps(_mm512_fnmadd_ps(vr5, vd5, vone), vr5, vr5);
137 
138     __m512 vf0 = _mm512_mul_ps(ve0, vr0);
139     __m512 vf1 = _mm512_mul_ps(ve1, vr1);
140     __m512 vf2 = _mm512_mul_ps(ve2, vr2);
141     __m512 vf3 = _mm512_mul_ps(ve3, vr3);
142     __m512 vf4 = _mm512_mul_ps(ve4, vr4);
143     __m512 vf5 = _mm512_mul_ps(ve5, vr5);
144 
145 
146     vf0 = _mm512_mask_sub_ps(vf0, _mm512_testn_epi32_mask(_mm512_castps_si512(vx0), vsign_mask), vone, vf0);
147     vf1 = _mm512_mask_sub_ps(vf1, _mm512_testn_epi32_mask(_mm512_castps_si512(vx1), vsign_mask), vone, vf1);
148     vf2 = _mm512_mask_sub_ps(vf2, _mm512_testn_epi32_mask(_mm512_castps_si512(vx2), vsign_mask), vone, vf2);
149     vf3 = _mm512_mask_sub_ps(vf3, _mm512_testn_epi32_mask(_mm512_castps_si512(vx3), vsign_mask), vone, vf3);
150     vf4 = _mm512_mask_sub_ps(vf4, _mm512_testn_epi32_mask(_mm512_castps_si512(vx4), vsign_mask), vone, vf4);
151     vf5 = _mm512_mask_sub_ps(vf5, _mm512_testn_epi32_mask(_mm512_castps_si512(vx5), vsign_mask), vone, vf5);
152 
153     _mm512_storeu_ps(y, vf0);
154     _mm512_storeu_ps(y + 16, vf1);
155     _mm512_storeu_ps(y + 32, vf2);
156     _mm512_storeu_ps(y + 48, vf3);
157     _mm512_storeu_ps(y + 64, vf4);
158     _mm512_storeu_ps(y + 80, vf5);
159     y += 96;
160   }
161   for (; n >= 16 * sizeof(float); n -= 16 * sizeof(float)) {
162     const __m512 vx = _mm512_loadu_ps(x);
163     x += 16;
164 
165     const __m512 vz = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx), vsign_mask));
166 
167     __m512 vn = _mm512_fmadd_ps(vz, vlog2e, vmagic_bias);
168     const __m512 vl = _mm512_permutex2var_ps(vtable_lo, _mm512_castps_si512(vn), vtable_hi);
169     vn = _mm512_sub_ps(vn, vmagic_bias);
170 
171     __m512 vt = _mm512_fmadd_ps(vn, vminus_ln2_hi, vz);
172     vt = _mm512_fmadd_ps(vn, vminus_ln2_lo, vt);
173 
174     __m512 vp = _mm512_fmadd_ps(vt, vc2, vc1);
175     vt = _mm512_mul_ps(vt, vl);
176     vp = _mm512_fmadd_ps(vt, vp, vl);
177 
178     const __m512 ve = _mm512_scalef_ps(vp, vn);
179     const __m512 vd = _mm512_add_ps(ve, vone);
180 
181     __m512 vr = _mm512_rcp14_ps(vd);
182     vr = _mm512_fmadd_ps(_mm512_fnmadd_ps(vr, vd, vone), vr, vr);
183 
184     __m512 vf = _mm512_mul_ps(ve, vr);
185 
186     vf = _mm512_mask_sub_ps(vf, _mm512_testn_epi32_mask(_mm512_castps_si512(vx), vsign_mask), vone, vf);
187 
188     _mm512_storeu_ps(y, vf);
189     y += 16;
190   }
191   if XNN_UNLIKELY(n != 0) {
192     assert(n >= 1 * sizeof(float));
193     assert(n <= 15 * sizeof(float));
194 
195     // Prepare mask for valid 32-bit elements (depends on n).
196     n >>= 2 /* log2(sizeof(float)) */;
197     const __mmask16 vmask = _cvtu32_mask16((uint16_t) ((uint32_t) (UINT32_C(1) << n) - UINT32_C(1)));
198 
199     const __m512 vx = _mm512_maskz_loadu_ps(vmask, x);
200     const __m512 vz = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx), vsign_mask));
201 
202     __m512 vn = _mm512_fmadd_ps(vz, vlog2e, vmagic_bias);
203     const __m512 vl = _mm512_permutex2var_ps(vtable_lo, _mm512_castps_si512(vn), vtable_hi);
204     vn = _mm512_sub_ps(vn, vmagic_bias);
205 
206     __m512 vt = _mm512_fmadd_ps(vn, vminus_ln2_hi, vz);
207     vt = _mm512_fmadd_ps(vn, vminus_ln2_lo, vt);
208 
209     __m512 vp = _mm512_fmadd_ps(vt, vc2, vc1);
210     vt = _mm512_mul_ps(vt, vl);
211     vp = _mm512_fmadd_ps(vt, vp, vl);
212 
213     const __m512 ve = _mm512_scalef_ps(vp, vn);
214     const __m512 vd = _mm512_add_ps(ve, vone);
215 
216     __m512 vr = _mm512_rcp14_ps(vd);
217     vr = _mm512_fmadd_ps(_mm512_fnmadd_ps(vr, vd, vone), vr, vr);
218 
219     __m512 vf = _mm512_mul_ps(ve, vr);
220 
221     vf = _mm512_mask_sub_ps(vf, _mm512_testn_epi32_mask(_mm512_castps_si512(vx), vsign_mask), vone, vf);
222 
223     _mm512_mask_storeu_ps(y, vmask, vf);
224   }
225 }
226