[Bug target/71733] ICE in vmx test cases with -mcpu=power9

[bergner at gcc dot gnu.org]

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