https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118616
--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #7) > the auto_vec for converts could use N as being 2 too since > supportable_indirect_convert_operation only currently pushes up to 2 > elements and allocating memory in the heap would be slowing than the > internal storage case. > > But that is just a small optimization and all. Filed that as PR 118617 so I don't forgot about it.