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| 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 /sysdeps/x86_64/multiarch/memmove_chk.c | |
| parent | d85f8ff66711fd3b1c5753330499c7403fa46d81 (diff) | |
| download | glibc-6fb8cbcb58a29fff73eb2101b34caa19a7f88eba.tar.gz glibc-6fb8cbcb58a29fff73eb2101b34caa19a7f88eba.tar.xz 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 'sysdeps/x86_64/multiarch/memmove_chk.c')
| -rw-r--r-- | sysdeps/x86_64/multiarch/memmove_chk.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/sysdeps/x86_64/multiarch/memmove_chk.c b/sysdeps/x86_64/multiarch/memmove_chk.c new file mode 100644 index 0000000000..a474f5f5ee --- /dev/null +++ b/sysdeps/x86_64/multiarch/memmove_chk.c @@ -0,0 +1,15 @@ +#include "init-arch.h" + +#define MEMMOVE_CHK __memmove_chk_sse2 + +#include "debug/memmove_chk.c" + +extern __typeof (__memmove_chk_sse2) __memmove_chk_sse2 attribute_hidden; +extern __typeof (__memmove_chk_sse2) __memmove_chk_ssse3 attribute_hidden; +extern __typeof (__memmove_chk_sse2) __memmove_chk_ssse3_back attribute_hidden; + +libc_ifunc (__memmove_chk, + HAS_SSSE3 + ? (HAS_FAST_COPY_BACKWARD + ? __memmove_chk_ssse3_back : __memmove_chk_ssse3) + : __memmove_chk_sse2); |