[llvm] [X86] Preserve node flags when combineCMov rebuilds a CMOV (PR #223469)

[Craig Topper via llvm-commits]

topperc wrote:

Please don't force push. https://llvm.org/docs/GitHub.html#rebasing-pull-requests-and-force-pushes

https://github.com/llvm/llvm-project/pull/223469