[llvm] [ConstraintElim] NE implies SLT if SLE and SGT if SGE (PR #127663)

[Marina Taylor via llvm-commits]

citymarina wrote:

Thank you both for the input. It sounds like we don't need this patch for now. I've opened #128168 to cover a different use case that we have.

https://github.com/llvm/llvm-project/pull/127663