https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82434
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> --- (In reply to Marc Glisse from comment #2) > -Dbool=char lets it merge the stores, I guess this is because bool has > precision < bitsize. No. It is because can_native_encode_type_p doesn't return true for BOOLEAN_TYPE or ENUMERAL_TYPE. But that routine is just flawed.