[Bug target/90453] PowerPC/AltiVec VSX: Provide vec_pack/vec_unpackh/vec_unpackl for 32<->64

[slandden at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90453

--- Comment #6 from Shawn Landden <slandden at gmail dot com> ---
Ahh, sorry for wasting your time. I didn't notice the signed requirement, which
is why it didn't work.