https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112431
--- Comment #12 from JuzheZhong <juzhe.zhong at rivai dot ai> --- Except vv/wv variant widen instructions. All other widen EEW overlap have been done. It seems that current register filter can not help us simulate accurate highest-number overlap for vwadd.vv/vwadd.wv instructions.
