[llvm] [InstCombine] Support and/or in `getFreelyInvertedImpl` using DeMorgan's Law (PR #85193)

[Thurston Dang via llvm-commits]

thurstond wrote:

> We probably need to revert this one before figuring out what to do about #86880

topperc mentioned in https://github.com/llvm/llvm-project/issues/86880#issuecomment-2024110702 that it "post-RA machine copy propagation removed a copy that was needed to make the code correct", so it's probably not worthwhile reverting this innocent patch that just happened to unluckily trigger the bug.

https://github.com/llvm/llvm-project/pull/85193