[Bug target/117818] [12/13/14/15 regression] vec_add incorrectly generates vadduwm for vector char const inputs.

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117818

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
is that powerpc64le or powerpc{,64} big endian?  (or both)