https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106688
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|leaving SSA emits |out of ssa Coalescing
|assignment into the inner |sometimes chooses the wrong
|loop |thing causing an extra move
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #4)
> Oh yes out of ssa used the wrong coalescing:
> Coalesce list: (24)buf_24 & (33)_33 [map: 9, 16] : Success -> 9
>
> Just by accident.
The reason why nothing in the RTL can clean it up is because the psedu-register
is used inside the loop and outside of the loop.
