[llvm] [InstCombine] fold icmp of select with constants and invertible op (PR #147182)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

> I haven't found a suitable implementation based on foldICmpEqualityWithOffset. A lot of judgment logic needs to be added to the shift class, and the original op and flag need to be kept to determine whether the simplifyBinOp result is available. Is this in line with expectations?

Sounds reasonable.


https://github.com/llvm/llvm-project/pull/147182