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author | Noah Goldstein <goldstein.w.n@gmail.com> | 2022-11-08 17:38:41 -0800 |
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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-avx2.S | |
parent | 64b8b6516b3cba19dba4c8f4f9b97daa0556fd98 (diff) | |
download | glibc-52cf11004eb10f8ebbc193fbdf4094cfecb3dbff.tar.gz glibc-52cf11004eb10f8ebbc193fbdf4094cfecb3dbff.tar.xz glibc-52cf11004eb10f8ebbc193fbdf4094cfecb3dbff.zip |
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-avx2.S')
-rw-r--r-- | sysdeps/x86_64/multiarch/wcscat-avx2.S | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/sysdeps/x86_64/multiarch/wcscat-avx2.S b/sysdeps/x86_64/multiarch/wcscat-avx2.S new file mode 100644 index 0000000000..a20f23c09d --- /dev/null +++ b/sysdeps/x86_64/multiarch/wcscat-avx2.S @@ -0,0 +1,10 @@ +#ifndef WCSCAT +# define WCSCAT __wcscat_avx2 +#endif + +#define USE_AS_WCSCPY +#define USE_AS_STRCAT + +#define STRCPY WCSCAT + +#include "strcpy-avx2.S" |