For the case where the Vector64.Create, Vector128.Create, and Vector256.Create helper functions are called with all constant arguments, we should support emitting a constant which can be loaded from memory, rather than emitting a chain of shuffle or insert calls.

We may also find some benefit in doing the same for partial constants as a partial constant with several inserts can still be faster than treating it as non-constant.

category:cq
theme:vector-codegen
skill-level:intermediate
cost:medium