[llvm] [SDAG] Add basic type legalization for experimental.vector.match (PR #213344)

[Luke Lau via llvm-commits]

https://github.com/lukel97 commented:

+1 on adding a dedicated node, this matches the other vector intrinsics like `VECTOR_FIND_LAST_ACTIVE`/`CTTZ_ELTS` etc.

https://github.com/llvm/llvm-project/pull/213344