[Bug target/84431] Suboptimal code for masked shifts (x86/x86-64)

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84431

--- Comment #5 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Ruslan Nikolaev from comment #4)
> Thanks! I was wondering if the patch also fixes the same thing for x86-64
> (i.e., -m64); in which case we would have something like this:
> 
> __uint128_t func(__uint128_t a, unsigned shift)
> {
>    return a << (shift & 63);
> }

Yes, the patch also handles __int128.