http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49559
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-06-28 10:45:11 UTC --- (In reply to comment #3) > note that the FDIS is *very* explicit about what move_backward does Ah ok - but if move_backward has to do that then we should avoid calling it at all when nothing needs to move, maybe in __move_merge_backward
