https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78847
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- Created attachment 40376 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40376&action=edit forwprop fix The forwprop piece, untested (apart from on the testcase). No time to explore further before the start of the next year.