]>
git.ipfire.org Git - thirdparty/glibc.git/blob - sysdeps/x86_64/multiarch/ifunc-wmemset.h
c1b0c2254bc645fad3c9d0a507202602e0dc1629
1 /* Common definition for wmemset/wmemset_chk ifunc selections.
2 Copyright (C) 2017-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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 <https://www.gnu.org/licenses/>. */
19 #include <init-arch.h>
21 extern __typeof (REDIRECT_NAME
) OPTIMIZE (sse2_unaligned
) attribute_hidden
;
22 extern __typeof (REDIRECT_NAME
) OPTIMIZE (avx2_unaligned
) attribute_hidden
;
23 extern __typeof (REDIRECT_NAME
) OPTIMIZE (avx512_unaligned
) attribute_hidden
;
28 const struct cpu_features
* cpu_features
= __get_cpu_features ();
30 if (!CPU_FEATURES_ARCH_P (cpu_features
, Prefer_No_VZEROUPPER
)
31 && CPU_FEATURE_USABLE_P (cpu_features
, AVX2
)
32 && CPU_FEATURES_ARCH_P (cpu_features
, AVX_Fast_Unaligned_Load
))
34 if (CPU_FEATURE_USABLE_P (cpu_features
, AVX512F
)
35 && !CPU_FEATURES_ARCH_P (cpu_features
, Prefer_No_AVX512
))
36 return OPTIMIZE (avx512_unaligned
);
38 return OPTIMIZE (avx2_unaligned
);
41 return OPTIMIZE (sse2_unaligned
);