http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52543
--- Comment #14 from Oleg Endo <olegendo at gcc dot gnu.org> 2012-09-06 22:13:22 UTC --- (In reply to comment #0) > > For the __flash address space no preparation is needed, but a 32-bit read can > use post-increment addressing whereas a split to 4 byte moves won't use > post-increment because GCC is completely afraid of pre-/post-modify > addressing. > BTW, the reason for the auto-inc-dec problem is described in PR 50749. I've started writing a replacement for the auto-inc-dec pass, but it will take some time.
