[llvm] SelectionDAG/expandFMINIMUMNUM_FMAXIMUMNUM: FCANONICALIZE is needed only for sNaN (PR #108180)

[YunQiang Su via llvm-commits]

wzssyqa wrote:

> Needs test changes
Once https://github.com/llvm/llvm-project/pull/108350 is merged, I will fix SelectionDAG::isKnownNeverNaN with sNaN, and add test case for it.


https://github.com/llvm/llvm-project/pull/108180