]>
git.ipfire.org Git - thirdparty/glibc.git/blob - sysdeps/x86_64/multiarch/ifunc-strcpy.h
bc6a70fc7c31db6ffdb1f412b16def2672bf1b8b
1 /* Common definition for ifunc selections optimized with SSE2, unaligned
3 All versions must be listed in ifunc-impl-list.c.
4 Copyright (C) 2017-2019 Free Software Foundation, Inc.
5 This file is part of the GNU C Library.
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or (at your option) any later version.
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library; if not, see
19 <http://www.gnu.org/licenses/>. */
21 #include <init-arch.h>
23 extern __typeof (REDIRECT_NAME
) OPTIMIZE (sse2
) attribute_hidden
;
24 extern __typeof (REDIRECT_NAME
) OPTIMIZE (sse2_unaligned
)
26 extern __typeof (REDIRECT_NAME
) OPTIMIZE (ssse3
) attribute_hidden
;
27 extern __typeof (REDIRECT_NAME
) OPTIMIZE (avx2
) attribute_hidden
;
32 const struct cpu_features
* cpu_features
= __get_cpu_features ();
34 if (!CPU_FEATURES_ARCH_P (cpu_features
, Prefer_No_VZEROUPPER
)
35 && CPU_FEATURES_ARCH_P (cpu_features
, AVX2_Usable
)
36 && CPU_FEATURES_ARCH_P (cpu_features
, AVX_Fast_Unaligned_Load
))
37 return OPTIMIZE (avx2
);
39 if (CPU_FEATURES_ARCH_P (cpu_features
, Fast_Unaligned_Load
))
40 return OPTIMIZE (sse2_unaligned
);
42 if (CPU_FEATURES_CPU_P (cpu_features
, SSSE3
))
43 return OPTIMIZE (ssse3
);
45 return OPTIMIZE (sse2
);