https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63568
--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> --- (In reply to Oleg Endo from comment #7) > If you decide not to do the transform at the tree level, please change this > to a target PR and assign it to me. I have a patch that does the transformation on match-and-simplify. Let's see if it can make it in...