[llvm] Intrinsic: introduce minimumnum and maximumnum for IR and SelectionDAG (PR #96649)

[Matt Arsenault via llvm-commits]

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@@ -8469,6 +8469,93 @@ SDValue TargetLowering::expandFMINIMUM_FMAXIMUM(SDNode *N,
   return MinMax;
 }
 
+SDValue TargetLowering::createSelectForFMINIMUMNUM_FMAXIMUMNUM(
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arsenm wrote:

This probably shouldn't be surfaced as a public can-fail helper 

https://github.com/llvm/llvm-project/pull/96649