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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-11-06 17:25:42 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-11-21 16:15:42 -0300 |
| commit | 4862d546c04bd2caf496d48335a546c0a44ad4a5 (patch) | |
| tree | 3e8bbae532c3dcc5ff93dde172500467aaaaf1f5 /sysdeps/i386 | |
| parent | eb9291aaa6ff6af158a1436b881ef8b834559621 (diff) | |
| download | glibc-4862d546c04bd2caf496d48335a546c0a44ad4a5.zip glibc-4862d546c04bd2caf496d48335a546c0a44ad4a5.tar.gz glibc-4862d546c04bd2caf496d48335a546c0a44ad4a5.tar.bz2 | |
x86: Use dl-symbol-redir-ifunc.h on cpu-tunables
The dl-symbol-redir-ifunc.h redirects compiler-generated libcalls to
arch-specific memory implementations to avoid ifunc calls where it is not
yet possible. The memcmp-isa-default-impl.h aims to fix the same issue
by calling the specific memset implementation directly.
Using the memcmp symbol directly allows the compiler to inline the memset
calls (especially because _dl_tunable_set_hwcaps uses constants values),
generating better code.
Checked on x86_64-linux-gnu.
Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Diffstat (limited to 'sysdeps/i386')
| -rw-r--r-- | sysdeps/i386/i686/multiarch/dl-symbol-redir-ifunc.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sysdeps/i386/i686/multiarch/dl-symbol-redir-ifunc.h b/sysdeps/i386/i686/multiarch/dl-symbol-redir-ifunc.h index dee69d1..220c586 100644 --- a/sysdeps/i386/i686/multiarch/dl-symbol-redir-ifunc.h +++ b/sysdeps/i386/i686/multiarch/dl-symbol-redir-ifunc.h @@ -19,6 +19,11 @@ #ifndef _DL_IFUNC_GENERIC_H #define _DL_IFUNC_GENERIC_H +#ifndef SHARED + asm ("memset = __memset_ia32"); +asm ("memcmp = __memcmp_ia32"); + +#endif /* SHARED */ #endif |