[llvm] [DAGCombiner] Only fold shift+mask compare to rotate if the shift amount divides the bit width (PR #220743)

[Stanislav Bardyuk via llvm-commits]

kodlan wrote:

> @kodlan are you still looking at this?

Oh sorry i forgot about this pr. I'll have a look in the evening when i get back to my computer..

https://github.com/llvm/llvm-project/pull/220743