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| author | Xi Ruoyao <xry111@xry111.site> | 2024-02-04 08:27:50 +0800 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2024-02-05 15:19:41 -0300 |
| commit | 2e80f139376450acdb7d879d799439578a41810e (patch) | |
| tree | 9888c8627c488da707f338232ab4c480c618eba9 /posix/bug-regex15.c | |
| parent | 814ed22eab4f3f43bb02229edab5d50004310258 (diff) | |
| download | glibc-2e80f139376450acdb7d879d799439578a41810e.zip glibc-2e80f139376450acdb7d879d799439578a41810e.tar.gz glibc-2e80f139376450acdb7d879d799439578a41810e.tar.bz2 | |
LoongArch: Use builtins for ffs and ffsll
On LoongArch GCC compiles __builtin_ffs{,ll} to basically
`(x ? __builtin_ctz (x) : -1) + 1`. Since a hardware ctz instruction is
available, this is much better than the table-driven generic
implementation.
Tested on loongarch64.
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'posix/bug-regex15.c')
0 files changed, 0 insertions, 0 deletions