[llvm] [InstComb] Fold shr ([x]or x, y), x -> shr y, x (PR #165866)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

> Looks like this pattern doesn't appear in the wild? Zero diff on llvm-opt-benchmark?

Confirmed. Does this pattern come from a real-world issue?


https://github.com/llvm/llvm-project/pull/165866