https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65341
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> --- I think the point is when _ARCH_PWR6 is defined, the assembler should be already in power6 or later mode (either through .machine directive emitted by the compiler earlier, or through some command line option passed to the assembler), so glibc shouldn't need to do that.
