http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54349
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |jakub at gcc dot gnu.org
Resolution| |INVALID
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-08-22
14:57:54 UTC ---
Not a bug. You need to tune for a CPU where inter-unit moves are desirable.
The default is generic tuning, which is a compromise between Intel CPUs (where
they are desirable) and AMD CPUs (where they are undesirable). In this
particular case the generic tuning doesn't do inter-unit moves as part of the
compromise. If you -mtune=corei7 or similar, you'll get an inter-unit move in
both cases.
