https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106020
--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Created attachment 55107 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55107&action=edit single file testcase `-O3 -W -Wall t.cc -flto -march=skylake` is enough to invoke the warning. NOTE -march=skylake is important. I think this might be a dup of another vectorizer issue with this warning then.
