1/* Common definition for libmathvec ifunc selections optimized with
2 AVX512.
3 Copyright (C) 2017-2019 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
19
20#include <init-arch.h>
21
22#undef PASTER2
23#define PASTER2(x,y) x##_##y
24
25extern void REDIRECT_NAME (void);
26extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_wrapper) attribute_hidden;
27extern __typeof (REDIRECT_NAME) OPTIMIZE (knl) attribute_hidden;
28extern __typeof (REDIRECT_NAME) OPTIMIZE (skx) attribute_hidden;
29
30static inline void *
31IFUNC_SELECTOR (void)
32{
33 const struct cpu_features* cpu_features = __get_cpu_features ();
34
35 if (!CPU_FEATURES_ARCH_P (cpu_features, MathVec_Prefer_No_AVX512))
36 {
37 if (CPU_FEATURES_ARCH_P (cpu_features, AVX512DQ_Usable))
38 return OPTIMIZE (skx);
39
40 if (CPU_FEATURES_ARCH_P (cpu_features, AVX512F_Usable))
41 return OPTIMIZE (knl);
42 }
43
44 return OPTIMIZE (avx2_wrapper);
45}
46