[llvm] [DAG] Add legalization handling for ABDS/ABDU (PR #92576)

[Simon Pilgrim via llvm-commits]

RKSimon wrote:

@bjope If you can confirm these go away if we pull out the inner getNode() calls then we can make the chance - but given how prevalent this is in the codebase, I don't know what we'd do to address it completely.

https://github.com/llvm/llvm-project/pull/92576