https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110592
--- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> --- Note that the SPARC compiler can be configured --with-cpu or --with-cpu_32 or --with-cpu_64 (as well as s/cpu/tune/) so you can locally tweak defaults.
