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ef9c4cb6 | 1 | /* Common definition for wmemset/wmemset_chk ifunc selections. |
04277e02 | 2 | Copyright (C) 2017-2019 Free Software Foundation, Inc. |
ef9c4cb6 L |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <init-arch.h> | |
20 | ||
21 | extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2_unaligned) attribute_hidden; | |
22 | extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_unaligned) attribute_hidden; | |
9650d04f | 23 | extern __typeof (REDIRECT_NAME) OPTIMIZE (evex_unaligned) attribute_hidden; |
ef9c4cb6 L |
24 | extern __typeof (REDIRECT_NAME) OPTIMIZE (avx512_unaligned) attribute_hidden; |
25 | ||
26 | static inline void * | |
27 | IFUNC_SELECTOR (void) | |
28 | { | |
29 | const struct cpu_features* cpu_features = __get_cpu_features (); | |
30 | ||
9650d04f | 31 | if (CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable) |
ef9c4cb6 L |
32 | && CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load)) |
33 | { | |
34 | if (CPU_FEATURES_ARCH_P (cpu_features, AVX512F_Usable) | |
9650d04f L |
35 | && !CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_AVX512) |
36 | && !CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER)) | |
ef9c4cb6 | 37 | return OPTIMIZE (avx512_unaligned); |
9650d04f L |
38 | |
39 | if (CPU_FEATURES_ARCH_P (cpu_features, AVX512VL_Usable)) | |
40 | return OPTIMIZE (evex_unaligned); | |
41 | ||
42 | if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER)) | |
ef9c4cb6 L |
43 | return OPTIMIZE (avx2_unaligned); |
44 | } | |
45 | ||
46 | return OPTIMIZE (sse2_unaligned); | |
47 | } |