| commit | 9c38deec96ebe1b052a0c1bef137b90967755f18 | |
| author | Noah Goldstein <goldstein.w.n@gmail.com> | |
| Wed, 6 Jul 2022 00:06:41 +0000 (5 17:06 -0700) | ||
| committer | Noah Goldstein <goldstein.w.n@gmail.com> | |
| Tue, 12 Jul 2022 18:44:12 +0000 (12 11:44 -0700) | ||
| tree | ae940cf21e7ecbef92e0028f10b7c0dc5a6400c6 | treesnapshot (tar.gz zip) |
| parent | c5bec9d491c5d066dd238ccafcdec78cd4592e8e | commitdiff |
x86: Remove generic strncat, strncpy, and stpncpy implementations
These functions all have optimized versions:
__strncat_sse2_unaligned, __strncpy_sse2_unaligned, and
stpncpy_sse2_unaligned which are faster than their respective generic
implementations. Since the sse2 versions can run on baseline x86_64,
we should use these as the baseline implementation and can remove the
generic implementations.
Geometric mean of N=20 runs of the entire benchmark suite on:
11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz (Tigerlake)
__strncat_sse2_unaligned / __strncat_generic: .944
__strncpy_sse2_unaligned / __strncpy_generic: .726
__stpncpy_sse2_unaligned / __stpncpy_generic: .650
Tested build with and without multiarch and full check with multiarch.
These functions all have optimized versions:
__strncat_sse2_unaligned, __strncpy_sse2_unaligned, and
stpncpy_sse2_unaligned which are faster than their respective generic
implementations. Since the sse2 versions can run on baseline x86_64,
we should use these as the baseline implementation and can remove the
generic implementations.
Geometric mean of N=20 runs of the entire benchmark suite on:
11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz (Tigerlake)
__strncat_sse2_unaligned / __strncat_generic: .944
__strncpy_sse2_unaligned / __strncpy_generic: .726
__stpncpy_sse2_unaligned / __stpncpy_generic: .650
Tested build with and without multiarch and full check with multiarch.