https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125266
--- Comment #4 from Richard Sandiford <rsandifo at gcc dot gnu.org> --- Perhaps I'm misunderstanding the point, but if a function uses function abi identifiers, conditional_register_usage should set up call_used_regs & co for the default ABI (the one you get without any attributes). It shouldn't take function attributes into account. Instead, the ABI of the current function is determined by crtl->abi.
