1 // Auto-generated file. Do not edit!
2 // Template: src/f32-velu/avx2-rr1-lut4-p4-perm.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/vunary.h>
16
17
18 static const int32_t mask_table[14] = {-1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0};
19
xnn_f32_velu_ukernel__avx2_rr1_lut4_p4_perm_x48(size_t n,const float * x,float * y,const union xnn_f32_elu_params params[restrict XNN_MIN_ELEMENTS (1)])20 void xnn_f32_velu_ukernel__avx2_rr1_lut4_p4_perm_x48(
21 size_t n,
22 const float* x,
23 float* y,
24 const union xnn_f32_elu_params params[restrict XNN_MIN_ELEMENTS(1)])
25 {
26 assert(n % sizeof(float) == 0);
27
28 const __m256 vprescale = _mm256_broadcast_ps((const __m128*) params->sse.prescale);
29 const __m256 valpha = _mm256_broadcast_ps((const __m128*) params->sse.alpha);
30 const __m256 vbeta = _mm256_broadcast_ps((const __m128*) params->sse.beta);
31
32 const __m256 vsat_cutoff = _mm256_set1_ps(-0x1.154246p+4f);
33 const __m256 vmagic_bias = _mm256_set1_ps(0x1.800000p21f);
34 const __m256 vlog2e = _mm256_set1_ps(0x1.715476p+0f);
35 const __m256 vtable = _mm256_set_ps(
36 0x1.EE89FAp-1f, 0x1.EA09E6p-1f, 0x1.F06FE0p-1f, 0x1.000000p+0f,
37 0x1.EE89FAp-1f, 0x1.EA09E6p-1f, 0x1.F06FE0p-1f, 0x1.000000p+0f);
38 const __m256 vminus_ln2 = _mm256_set1_ps(-0x1.62E43p-1f);
39 const __m256 vc4 = _mm256_set1_ps(0x1.554F9Ap-5f);
40 const __m256 vc3 = _mm256_set1_ps(0x1.557082p-3f);
41 const __m256 vc2 = _mm256_set1_ps(0x1.000002p-1f);
42
43 for (; n >= 48 * sizeof(float); n -= 48 * sizeof(float)) {
44 __m256 vx0 = _mm256_loadu_ps(x);
45 __m256 vx1 = _mm256_loadu_ps(x + 8);
46 __m256 vx2 = _mm256_loadu_ps(x + 16);
47 __m256 vx3 = _mm256_loadu_ps(x + 24);
48 __m256 vx4 = _mm256_loadu_ps(x + 32);
49 __m256 vx5 = _mm256_loadu_ps(x + 40);
50 x += 48;
51
52 const __m256 vz0 = _mm256_max_ps(vsat_cutoff, _mm256_mul_ps(vx0, vprescale));
53 const __m256 vz1 = _mm256_max_ps(vsat_cutoff, _mm256_mul_ps(vx1, vprescale));
54 const __m256 vz2 = _mm256_max_ps(vsat_cutoff, _mm256_mul_ps(vx2, vprescale));
55 const __m256 vz3 = _mm256_max_ps(vsat_cutoff, _mm256_mul_ps(vx3, vprescale));
56 const __m256 vz4 = _mm256_max_ps(vsat_cutoff, _mm256_mul_ps(vx4, vprescale));
57 const __m256 vz5 = _mm256_max_ps(vsat_cutoff, _mm256_mul_ps(vx5, vprescale));
58
59 __m256 vn0 = _mm256_fmadd_ps(vz0, vlog2e, vmagic_bias);
60 __m256 vn1 = _mm256_fmadd_ps(vz1, vlog2e, vmagic_bias);
61 __m256 vn2 = _mm256_fmadd_ps(vz2, vlog2e, vmagic_bias);
62 __m256 vn3 = _mm256_fmadd_ps(vz3, vlog2e, vmagic_bias);
63 __m256 vn4 = _mm256_fmadd_ps(vz4, vlog2e, vmagic_bias);
64 __m256 vn5 = _mm256_fmadd_ps(vz5, vlog2e, vmagic_bias);
65
66 const __m256i ven0 = _mm256_slli_epi32(_mm256_castps_si256(vn0), 21);
67 const __m256i vl0 = _mm256_castps_si256(_mm256_permutevar_ps(vtable, _mm256_castps_si256(vn0)));
68 vn0 = _mm256_sub_ps(vn0, vmagic_bias);
69 const __m256i ven1 = _mm256_slli_epi32(_mm256_castps_si256(vn1), 21);
70 const __m256i vl1 = _mm256_castps_si256(_mm256_permutevar_ps(vtable, _mm256_castps_si256(vn1)));
71 vn1 = _mm256_sub_ps(vn1, vmagic_bias);
72 const __m256i ven2 = _mm256_slli_epi32(_mm256_castps_si256(vn2), 21);
73 const __m256i vl2 = _mm256_castps_si256(_mm256_permutevar_ps(vtable, _mm256_castps_si256(vn2)));
74 vn2 = _mm256_sub_ps(vn2, vmagic_bias);
75 const __m256i ven3 = _mm256_slli_epi32(_mm256_castps_si256(vn3), 21);
76 const __m256i vl3 = _mm256_castps_si256(_mm256_permutevar_ps(vtable, _mm256_castps_si256(vn3)));
77 vn3 = _mm256_sub_ps(vn3, vmagic_bias);
78 const __m256i ven4 = _mm256_slli_epi32(_mm256_castps_si256(vn4), 21);
79 const __m256i vl4 = _mm256_castps_si256(_mm256_permutevar_ps(vtable, _mm256_castps_si256(vn4)));
80 vn4 = _mm256_sub_ps(vn4, vmagic_bias);
81 const __m256i ven5 = _mm256_slli_epi32(_mm256_castps_si256(vn5), 21);
82 const __m256i vl5 = _mm256_castps_si256(_mm256_permutevar_ps(vtable, _mm256_castps_si256(vn5)));
83 vn5 = _mm256_sub_ps(vn5, vmagic_bias);
84
85 __m256 vs0 = _mm256_castsi256_ps(_mm256_add_epi32(vl0, ven0));
86 __m256 vt0 = _mm256_fmadd_ps(vn0, vminus_ln2, vz0);
87 __m256 vs1 = _mm256_castsi256_ps(_mm256_add_epi32(vl1, ven1));
88 __m256 vt1 = _mm256_fmadd_ps(vn1, vminus_ln2, vz1);
89 __m256 vs2 = _mm256_castsi256_ps(_mm256_add_epi32(vl2, ven2));
90 __m256 vt2 = _mm256_fmadd_ps(vn2, vminus_ln2, vz2);
91 __m256 vs3 = _mm256_castsi256_ps(_mm256_add_epi32(vl3, ven3));
92 __m256 vt3 = _mm256_fmadd_ps(vn3, vminus_ln2, vz3);
93 __m256 vs4 = _mm256_castsi256_ps(_mm256_add_epi32(vl4, ven4));
94 __m256 vt4 = _mm256_fmadd_ps(vn4, vminus_ln2, vz4);
95 __m256 vs5 = _mm256_castsi256_ps(_mm256_add_epi32(vl5, ven5));
96 __m256 vt5 = _mm256_fmadd_ps(vn5, vminus_ln2, vz5);
97
98 __m256 vp0 = _mm256_fmadd_ps(vc4, vt0, vc3);
99 __m256 vp1 = _mm256_fmadd_ps(vc4, vt1, vc3);
100 __m256 vp2 = _mm256_fmadd_ps(vc4, vt2, vc3);
101 __m256 vp3 = _mm256_fmadd_ps(vc4, vt3, vc3);
102 __m256 vp4 = _mm256_fmadd_ps(vc4, vt4, vc3);
103 __m256 vp5 = _mm256_fmadd_ps(vc4, vt5, vc3);
104
105 vp0 = _mm256_fmadd_ps(vp0, vt0, vc2);
106 vp1 = _mm256_fmadd_ps(vp1, vt1, vc2);
107 vp2 = _mm256_fmadd_ps(vp2, vt2, vc2);
108 vp3 = _mm256_fmadd_ps(vp3, vt3, vc2);
109 vp4 = _mm256_fmadd_ps(vp4, vt4, vc2);
110 vp5 = _mm256_fmadd_ps(vp5, vt5, vc2);
111
112 vp0 = _mm256_mul_ps(vp0, vt0);
113 vt0 = _mm256_mul_ps(vt0, vs0);
114 vp1 = _mm256_mul_ps(vp1, vt1);
115 vt1 = _mm256_mul_ps(vt1, vs1);
116 vp2 = _mm256_mul_ps(vp2, vt2);
117 vt2 = _mm256_mul_ps(vt2, vs2);
118 vp3 = _mm256_mul_ps(vp3, vt3);
119 vt3 = _mm256_mul_ps(vt3, vs3);
120 vp4 = _mm256_mul_ps(vp4, vt4);
121 vt4 = _mm256_mul_ps(vt4, vs4);
122 vp5 = _mm256_mul_ps(vp5, vt5);
123 vt5 = _mm256_mul_ps(vt5, vs5);
124
125 vs0 = _mm256_fmsub_ps(vs0, valpha, valpha);
126 vp0 = _mm256_fmadd_ps(vp0, vt0, vt0);
127 vs1 = _mm256_fmsub_ps(vs1, valpha, valpha);
128 vp1 = _mm256_fmadd_ps(vp1, vt1, vt1);
129 vs2 = _mm256_fmsub_ps(vs2, valpha, valpha);
130 vp2 = _mm256_fmadd_ps(vp2, vt2, vt2);
131 vs3 = _mm256_fmsub_ps(vs3, valpha, valpha);
132 vp3 = _mm256_fmadd_ps(vp3, vt3, vt3);
133 vs4 = _mm256_fmsub_ps(vs4, valpha, valpha);
134 vp4 = _mm256_fmadd_ps(vp4, vt4, vt4);
135 vs5 = _mm256_fmsub_ps(vs5, valpha, valpha);
136 vp5 = _mm256_fmadd_ps(vp5, vt5, vt5);
137
138 const __m256 ve0 = _mm256_fmadd_ps(vp0, valpha, vs0);
139 vx0 = _mm256_mul_ps(vx0, vbeta);
140 const __m256 ve1 = _mm256_fmadd_ps(vp1, valpha, vs1);
141 vx1 = _mm256_mul_ps(vx1, vbeta);
142 const __m256 ve2 = _mm256_fmadd_ps(vp2, valpha, vs2);
143 vx2 = _mm256_mul_ps(vx2, vbeta);
144 const __m256 ve3 = _mm256_fmadd_ps(vp3, valpha, vs3);
145 vx3 = _mm256_mul_ps(vx3, vbeta);
146 const __m256 ve4 = _mm256_fmadd_ps(vp4, valpha, vs4);
147 vx4 = _mm256_mul_ps(vx4, vbeta);
148 const __m256 ve5 = _mm256_fmadd_ps(vp5, valpha, vs5);
149 vx5 = _mm256_mul_ps(vx5, vbeta);
150
151 const __m256 vy0 = _mm256_blendv_ps(vx0, ve0, vx0);
152 const __m256 vy1 = _mm256_blendv_ps(vx1, ve1, vx1);
153 const __m256 vy2 = _mm256_blendv_ps(vx2, ve2, vx2);
154 const __m256 vy3 = _mm256_blendv_ps(vx3, ve3, vx3);
155 const __m256 vy4 = _mm256_blendv_ps(vx4, ve4, vx4);
156 const __m256 vy5 = _mm256_blendv_ps(vx5, ve5, vx5);
157
158 _mm256_storeu_ps(y, vy0);
159 _mm256_storeu_ps(y + 8, vy1);
160 _mm256_storeu_ps(y + 16, vy2);
161 _mm256_storeu_ps(y + 24, vy3);
162 _mm256_storeu_ps(y + 32, vy4);
163 _mm256_storeu_ps(y + 40, vy5);
164 y += 48;
165 }
166 for (; n >= 8 * sizeof(float); n -= 8 * sizeof(float)) {
167 __m256 vx = _mm256_loadu_ps(x);
168 x += 8;
169
170 const __m256 vz = _mm256_max_ps(vsat_cutoff, _mm256_mul_ps(vx, vprescale));
171
172 __m256 vn = _mm256_fmadd_ps(vz, vlog2e, vmagic_bias);
173 const __m256i ven = _mm256_slli_epi32(_mm256_castps_si256(vn), 21);
174 const __m256i vl = _mm256_castps_si256(_mm256_permutevar_ps(vtable, _mm256_castps_si256(vn)));
175 __m256 vs = _mm256_castsi256_ps(_mm256_add_epi32(vl, ven));
176 vn = _mm256_sub_ps(vn, vmagic_bias);
177
178 __m256 vt = _mm256_fmadd_ps(vn, vminus_ln2, vz);
179
180 __m256 vp = _mm256_fmadd_ps(vc4, vt, vc3);
181 vp = _mm256_fmadd_ps(vp, vt, vc2);
182 vp = _mm256_mul_ps(vp, vt);
183
184 vt = _mm256_mul_ps(vt, vs);
185 vs = _mm256_fmsub_ps(vs, valpha, valpha);
186 vp = _mm256_fmadd_ps(vp, vt, vt);
187 const __m256 ve = _mm256_fmadd_ps(vp, valpha, vs);
188
189 vx = _mm256_mul_ps(vx, vbeta);
190 const __m256 vy = _mm256_blendv_ps(vx, ve, vx);
191
192 _mm256_storeu_ps(y, vy);
193 y += 8;
194 }
195 if XNN_UNLIKELY(n != 0) {
196 assert(n >= 1 * sizeof(float));
197 assert(n <= 7 * sizeof(float));
198 __m256i vmask = _mm256_loadu_si256((const __m256i*) ((uintptr_t) &mask_table[7] - n));
199
200 __m256 vx = _mm256_maskload_ps(x, vmask);
201
202 const __m256 vz = _mm256_max_ps(vsat_cutoff, _mm256_mul_ps(vx, vprescale));
203
204 __m256 vn = _mm256_fmadd_ps(vz, vlog2e, vmagic_bias);
205 const __m256i ven = _mm256_slli_epi32(_mm256_castps_si256(vn), 21);
206 const __m256i vl = _mm256_castps_si256(_mm256_permutevar_ps(vtable, _mm256_castps_si256(vn)));
207 __m256 vs = _mm256_castsi256_ps(_mm256_add_epi32(vl, ven));
208 vn = _mm256_sub_ps(vn, vmagic_bias);
209
210 __m256 vt = _mm256_fmadd_ps(vn, vminus_ln2, vz);
211
212 __m256 vp = _mm256_fmadd_ps(vc4, vt, vc3);
213 vp = _mm256_fmadd_ps(vp, vt, vc2);
214 vp = _mm256_mul_ps(vp, vt);
215
216 vt = _mm256_mul_ps(vt, vs);
217 vs = _mm256_fmsub_ps(vs, valpha, valpha);
218 vp = _mm256_fmadd_ps(vp, vt, vt);
219 const __m256 ve = _mm256_fmadd_ps(vp, valpha, vs);
220
221 vx = _mm256_mul_ps(vx, vbeta);
222 const __m256 vy = _mm256_blendv_ps(vx, ve, vx);
223
224 // _mm256_maskstore_ps(y, vmask, vf) could be used here, but triggers msan failures (probably an msan bug).
225 __m128 vy_lo = _mm256_castps256_ps128(vy);
226 if (n & (4 * sizeof(float))) {
227 _mm_storeu_ps(y, vy_lo);
228 vy_lo = _mm256_extractf128_ps(vy, 1);
229 y += 4;
230 }
231 if (n & (2 * sizeof(float))) {
232 _mm_storel_pi((__m64*) y, vy_lo);
233 vy_lo = _mm_movehl_ps(vy_lo, vy_lo);
234 y += 2;
235 }
236 if (n & (1 * sizeof(float))) {
237 _mm_store_ss(y, vy_lo);
238 }
239 }
240 }
241