https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103932
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Last reconfirmed| |2022-01-06
Ever confirmed|0 |1
Severity|normal |enhancement
Status|UNCONFIRMED |NEW
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The gimple level is decent:
_7 = __builtin_ia32_ptestz128 (_4, _4);
_1 = _7 == 0;
bit_5 = (const u64) _1;
Though _7 is already 0 or 1. The problem is the target does not say the range
of __builtin_ia32_ptestz128 is 0 or 1.
