https://gcc.gnu.org/bugzilla/show_bug.cgi?id=49065
Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-22
CC| |segher at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Confirmed. Not specific to PowerPC; there are many duplicate reports
of this. For most modern PowerPC processors you now get ldw/stw, since
those orocessors can handle unaligned accesses fine. You do still end
up with an RMW in the volatile case. To get the byte accesses use e.g.
-mcpu=403.
