1 | /* This file is part of the GNU C Library. |
2 | Copyright (C) 2008-2019 Free Software Foundation, Inc. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ |
17 | |
18 | #ifdef __ASSEMBLER__ |
19 | # include <cpu-features.h> |
20 | #else |
21 | # include <ldsodefs.h> |
22 | #endif |
23 | #include <ifunc-init.h> |
24 | #include <isa.h> |
25 | |
26 | #ifndef __x86_64__ |
27 | /* Due to the reordering and the other nifty extensions in i686, it is |
28 | not really good to use heavily i586 optimized code on an i686. It's |
29 | better to use i486 code if it isn't an i586. */ |
30 | # if MINIMUM_ISA == 686 |
31 | # define USE_I586 0 |
32 | # define USE_I686 1 |
33 | # else |
34 | # define USE_I586 (HAS_ARCH_FEATURE (I586) && !HAS_ARCH_FEATURE (I686)) |
35 | # define USE_I686 HAS_ARCH_FEATURE (I686) |
36 | # endif |
37 | #endif |
38 | |