https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106245
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Last reconfirmed| |2022-07-10
Target| |x86_64-linux-gnu
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed. Note on aarch64, it is optimized down to &1 on the RTL level.
The issue is we don't optimize:
int f(int a)
{
return (a << 31) >> 31;
}
Into:
int f(int a)
{
return -(a&1);
}
I thought I had saw a bug report about that but I can't find it.
