http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47614
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-02-08 14:52:25 UTC --- I can't reproduce this with a cross compiler unfortunately, but perhaps using check_for_inc_dec (currently static in dse.c) when deleting insn where needed in postreload.c might fix that.