[clang] [InstCombine] Fold xored one-complemented operand comparisons (PR #69882)

[Nikita Popov via cfe-commits]

nikic wrote:

@elhewaty This is due to an incorrect rebase around the processUMulZExtIdiom() call. Can you please rebase another time over https://github.com/llvm/llvm-project/commit/ea99df2e84d5f1da7f04bfa9f13844c44e0f1f78, which should remove all the diffs unrelated to your change?

https://github.com/llvm/llvm-project/pull/69882