[llvm] [X86][SelectionDAG] - Add support for llvm.canonicalize intrinsic (PR #106370)

[Matt Arsenault via llvm-commits]

https://github.com/arsenm requested changes to this pull request.

This is not an optimization combine. This is lowering and should go through lowering interfaces 

https://github.com/llvm/llvm-project/pull/106370