https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103850
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is due to not scheduling on x86 before register allocation.
Adding -fschedule-insns seems to get the slow kernel to be the same speed as
the fast kernel.
