diff options
| author | H.J. Lu <hongjiu.lu@intel.com> | 2010-06-30 08:26:11 -0700 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2010-06-30 08:26:11 -0700 |
| commit | 6fb8cbcb58a29fff73eb2101b34caa19a7f88eba (patch) | |
| tree | 3a39ddec3a6cf66f8541c6591dbe4017136580f0 /ChangeLog | |
| parent | d85f8ff66711fd3b1c5753330499c7403fa46d81 (diff) | |
| download | glibc-6fb8cbcb58a29fff73eb2101b34caa19a7f88eba.tar glibc-6fb8cbcb58a29fff73eb2101b34caa19a7f88eba.tar.gz glibc-6fb8cbcb58a29fff73eb2101b34caa19a7f88eba.tar.bz2 glibc-6fb8cbcb58a29fff73eb2101b34caa19a7f88eba.zip | |
Improve 64bit memcpy/memmove for Atom, Core 2 and Core i7
This patch includes optimized 64bit memcpy/memmove for Atom, Core 2 and
Core i7. It improves memcpy by up to 3X on Atom, up to 4X on Core 2 and
up to 1X on Core i7. It also improves memmove by up to 3X on Atom, up to
4X on Core 2 and up to 2X on Core i7.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 32 |
1 files changed, 32 insertions, 0 deletions
@@ -1,3 +1,35 @@ +2010-06-25 H.J. Lu <hongjiu.lu@intel.com> + + * debug/memmove_chk.c (__memmove_chk): Renamed to ... + (MEMMOVE_CHK): ...this. Default to __memmove_chk. + * string/memmove.c (memmove): Renamed to ... + (MEMMOVE): ...this. Default to memmove. + * sysdeps/x86_64/memcpy.S: Use ENTRY_CHK and END_CHK. + * sysdeps/x86_64/sysdep.h (ENTRY_CHK): Define. + (END_CHK): Define. + * sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add + memcpy-ssse3 mempcpy-ssse3 memmove-ssse3 memcpy-ssse3-back + mempcpy-ssse3-back memmove-ssse3-back. + * sysdeps/x86_64/multiarch/bcopy.S: New file . + * sysdeps/x86_64/multiarch/memcpy-ssse3-back.S: New file. + * sysdeps/x86_64/multiarch/memcpy-ssse3.S: New file. + * sysdeps/x86_64/multiarch/memcpy.S: New file. + * sysdeps/x86_64/multiarch/memcpy_chk.S: New file. + * sysdeps/x86_64/multiarch/memmove-ssse3-back.S: New file. + * sysdeps/x86_64/multiarch/memmove-ssse3.S: New file. + * sysdeps/x86_64/multiarch/memmove.c: New file. + * sysdeps/x86_64/multiarch/memmove_chk.c: New file. + * sysdeps/x86_64/multiarch/mempcpy-ssse3-back.S: New file. + * sysdeps/x86_64/multiarch/mempcpy-ssse3.S: New file. + * sysdeps/x86_64/multiarch/mempcpy.S: New file. + * sysdeps/x86_64/multiarch/mempcpy_chk.S: New file. + * sysdeps/x86_64/multiarch/init-arch.h (bit_Fast_Copy_Backward): + Define. + (index_Fast_Copy_Backward): Define. + (HAS_ARCH_FEATURE): Define. + (HAS_FAST_REP_STRING): Define. + (HAS_FAST_COPY_BACKWARD): Define. + 2010-06-21 Andreas Schwab <schwab@redhat.com> * sysdeps/unix/sysv/linux/getlogin_r.c (__getlogin_r_loginuid): |