[Bug tree-optimization/64946] [AArch64] gcc.target/aarch64/vect-abs-compile.c - "abs" vectorization fails for char/short types

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64946

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think you should always use an unsigned type here so it will be defined in
the IR.  This is mentioned in bug 22199#c3 .