https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71733
--- Comment #3 from Peter Bergner <bergner at gcc dot gnu.org> --- Confirmed, we're not disabling TARGET_P9_DFORM_VECTOR when we disable vsx. (gdb) p TARGET_VSX $14 = false (gdb) p TARGET_P9_VECTOR $15 = false (gdb) p TARGET_P9_DFORM_SCALAR $16 = false (gdb) p TARGET_P9_DFORM_VECTOR $17 = true