[llvm] [AArch64] Match BSP through trunc(and) canonicalization in OR combine (PR #198277)

[Rajveer Singh Bharadwaj via llvm-commits]

https://github.com/Rajveer100 commented:

I think the approach should work for now, but we can do better later on.

https://github.com/llvm/llvm-project/pull/198277