https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81601
--- Comment #6 from Patrick Palka <ppalka at gcc dot gnu.org> --- (In reply to Patrick Palka from comment #5) > So what's the right way to fix this? To move optimize_bit_field_compare() > from fold_binary to match.pd so that the conditions on ... so that conditions on tp->chrono_type get consistently transformed into BIT_FIELD_REFs, or to remove optimize_bit_field_compare() altogether? It seems like a rather low-level optimization to be done in GENERIC/GIMPLE.
