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| author | Noah Goldstein <goldstein.w.n@gmail.com> | 2022-11-08 17:38:41 -0800 |
|---|---|---|
| committer | Noah Goldstein <goldstein.w.n@gmail.com> | 2022-11-08 19:22:33 -0800 |
| commit | 52cf11004eb10f8ebbc193fbdf4094cfecb3dbff (patch) | |
| tree | dc3c5cf41a53bd42de548c3e0d04f37dac95b72b /sysdeps/x86_64/multiarch/wcscat-generic.c | |
| parent | 64b8b6516b3cba19dba4c8f4f9b97daa0556fd98 (diff) | |
| download | glibc-52cf11004eb10f8ebbc193fbdf4094cfecb3dbff.tar.gz | |
x86: Add avx2 optimized functions for the wchar_t strcpy family
Implemented:
wcscat-avx2 (+ 744 bytes
wcscpy-avx2 (+ 539 bytes)
wcpcpy-avx2 (+ 577 bytes)
wcsncpy-avx2 (+1108 bytes)
wcpncpy-avx2 (+1214 bytes)
wcsncat-avx2 (+1085 bytes)
Performance Changes:
Times are from N = 10 runs of the benchmark suite and are reported
as geometric mean of all ratios of New Implementation / Best Old
Implementation. Best Old Implementation was determined with the
highest ISA implementation.
wcscat-avx2 -> 0.975
wcscpy-avx2 -> 0.591
wcpcpy-avx2 -> 0.698
wcsncpy-avx2 -> 0.730
wcpncpy-avx2 -> 0.711
wcsncat-avx2 -> 0.954
Code Size Changes:
This change increase the size of libc.so by ~5.5kb bytes. For
reference the patch optimizing the normal strcpy family functions
decreases libc.so by ~5.2kb.
Full check passes on x86-64 and build succeeds for all ISA levels w/
and w/o multiarch.
Diffstat (limited to 'sysdeps/x86_64/multiarch/wcscat-generic.c')
| -rw-r--r-- | sysdeps/x86_64/multiarch/wcscat-generic.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sysdeps/x86_64/multiarch/wcscat-generic.c b/sysdeps/x86_64/multiarch/wcscat-generic.c index d86b4d5c00..6476f85bbb 100644 --- a/sysdeps/x86_64/multiarch/wcscat-generic.c +++ b/sysdeps/x86_64/multiarch/wcscat-generic.c @@ -19,7 +19,7 @@ /* We always need to build this implementation as strspn-sse4 needs to be able to fallback to it. */ #include <isa-level.h> -#if ISA_SHOULD_BUILD (3) +#if ISA_SHOULD_BUILD (2) # define WCSCAT __wcscat_generic # include <wcsmbs/wcscat.c> |