https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65138
--- Comment #7 from David Edelsohn <dje at gcc dot gnu.org> --- Allowing users to specify -mcpu=powerpc64le is all well and good, but if TARGET_DEFAULT is set, it should not be gratuitously overridden in rs6000_option_override. The logic is not correct and defaults should not be inherited from the processor name.
