[mlir] [mlir] Add support for vector types whose number of elements are from… (PR #68030)

[Andrzej Warzyński]

https://github.com/banach-space commented:

The new constraints that you are adding here are somewhat similar to what @MacDue adds in https://github.com/llvm/llvm-project/pull/68586. You may want to compare against that. 

Separately, what about tests?




https://github.com/llvm/llvm-project/pull/68030