https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93376
--- Comment #5 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> --- Personally I'd prefer it if we skipped arithmetic on modes wider than MAX_BITSIZE_MODE_ANY_INT. wide-int routines should always be able to write HWIs up to the full precision of the integer.