[llvm] [VPlan] Remove redundant x && (y && x) -> x && y combine (PR #213219)

[Florian Hahn via llvm-commits]

https://github.com/fhahn commented:

Can you please also add a regression test for miscompile in the earlier version? It should be possible with input IR

https://github.com/llvm/llvm-project/pull/213219