[llvm] SelectionDAG: ExpandFMINNUM_FMAXNUM: FCANONICALIZE is not needed for FMINNUM_IEEE (PR #139007)

[Matt Arsenault via llvm-commits]

arsenm wrote:

This isn't the right sequencing. The IEEE version only exists because of the old behavior. The way to do this is to convert each target to making fminnum/fmaxnum directly legal and then deleting this expansion 

https://github.com/llvm/llvm-project/pull/139007