Define vslide1up, vslide1down, vfslide1up, and vfslide1down intrinsics and lower to V instructions.
We work with @rogfer01 from BSC to come out this patch.
Authored-by: Roger Ferrer Ibanez <rofirrim@gmail.com>
Co-Authored-by: ShihPo Hung <shihpo.hung@sifive.com>
Previous predicates closed here. Should these VSLIDE* instructions have a Predicate?