https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88712
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Known to work| |11.1.0
Target Milestone|--- |11.0
Known to fail| |10.3.0
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #2)
> so the clearing of %edx is sandwiched in between the cmp and cmov. Later on
> in this case sched2 reorders those and so we at that point could replace it,
> but we don't have another peephole2 pass and passes after sched2 don't have
> the needed infrastructure to check if the flags are dead (because movl $0,
> reg doesn't clobber flags, but xorl reg, reg does).
Right and the peephole2 that implemented that was done in r11-2588 so closing
as fixed in GCC 11+.
