[llvm] [SelectionDAG]: Add more cases for UDIV, SDIV, SRA, and SRL (PR #89522)

[Simon Pilgrim via llvm-commits]

https://github.com/RKSimon commented:

Please can you compare with the ValueTracking.cpp implementations? You'd be better off adding new handling in there first (and then updating SelectionDAG to match) as we have much better fuzz testing in the middle end for this kind of thing than in the backend.

https://github.com/llvm/llvm-project/pull/89522