http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52624
--- Comment #8 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-03-22 10:04:44 UTC --- > Please note that the rotate is split back into bswap, so we can avoid rotate > by > using "xchg %rh, %rl" on P4. Sure, 16-bit rotates are already emitted as xchg when appropriate.
