http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49093
--- Comment #5 from Ira Rosen <irar at il dot ibm.com> 2011-05-31 08:30:49 UTC --- (In reply to comment #4) > I think that's reasonable for 4.6. But we don't need to make > data-ref analysis fail just because of volatile references - we for > example can easily unroll a loop with volatile loads/stores. > > Of course this case seems to be special - how do we deal with > stmts with no uses during vectorization? Or do we assume > they don't happen because usually DCE gets rid of them? We ignore them. But this is under the assumption that they don't have memory accesses. Ira > > Richard.
