[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 #1 from Peter Bergner <bergner at gcc dot gnu.org> ---
That altivec load should not be using reg+offset (dform) addressing.  I'll have
a look.