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| author | Noah Goldstein <goldstein.w.n@gmail.com> | 2022-04-21 20:52:28 -0500 |
|---|---|---|
| committer | Noah Goldstein <goldstein.w.n@gmail.com> | 2022-04-22 23:08:36 -0500 |
| commit | 5307aa9c1800f36a64c183c091c9af392c1fa75c (patch) | |
| tree | 8a8a8e6d8221a7157219490657eacf5d184b1c9c /sysdeps/x86_64/multiarch | |
| parent | c2ff9555a18b84732004d061b1a797ea1a432c6a (diff) | |
| download | glibc-5307aa9c1800f36a64c183c091c9af392c1fa75c.tar.gz glibc-5307aa9c1800f36a64c183c091c9af392c1fa75c.tar.xz glibc-5307aa9c1800f36a64c183c091c9af392c1fa75c.zip | |
x86: Optimize {str|wcs}rchr-sse2
The new code unrolls the main loop slightly without adding too much overhead and minimizes the comparisons for the search CHAR. Geometric Mean of all benchmarks New / Old: 0.741 See email for all results. Full xcheck passes on x86_64 with and without multiarch enabled. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
Diffstat (limited to 'sysdeps/x86_64/multiarch')
| -rw-r--r-- | sysdeps/x86_64/multiarch/strrchr-sse2.S | 2 | ||||
| -rw-r--r-- | sysdeps/x86_64/multiarch/wcsrchr-sse2.S | 3 |
2 files changed, 2 insertions, 3 deletions
diff --git a/sysdeps/x86_64/multiarch/strrchr-sse2.S b/sysdeps/x86_64/multiarch/strrchr-sse2.S index db1b44c23c..866396e947 100644 --- a/sysdeps/x86_64/multiarch/strrchr-sse2.S +++ b/sysdeps/x86_64/multiarch/strrchr-sse2.S @@ -17,7 +17,7 @@ <https://www.gnu.org/licenses/>. */ #if IS_IN (libc) -# define strrchr __strrchr_sse2 +# define STRRCHR __strrchr_sse2 # undef weak_alias # define weak_alias(strrchr, rindex) diff --git a/sysdeps/x86_64/multiarch/wcsrchr-sse2.S b/sysdeps/x86_64/multiarch/wcsrchr-sse2.S index 78d1ca6553..69d2f3cdb1 100644 --- a/sysdeps/x86_64/multiarch/wcsrchr-sse2.S +++ b/sysdeps/x86_64/multiarch/wcsrchr-sse2.S @@ -17,7 +17,6 @@ <https://www.gnu.org/licenses/>. */ #if IS_IN (libc) -# define wcsrchr __wcsrchr_sse2 +# define STRRCHR __wcsrchr_sse2 #endif - #include "../wcsrchr.S" |