[llvm] [X86] Support lowering of FMINIMUMNUM/FMAXIMUMNUM (PR #121464)

[Matt Arsenault via llvm-commits]

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@@ -1081,6 +1083,13 @@ void VectorLegalizer::Expand(SDNode *Node, SmallVectorImpl<SDValue> &Results) {
   case ISD::FMAXIMUM:
     Results.push_back(TLI.expandFMINIMUM_FMAXIMUM(Node, DAG));
     return;
+  case ISD::FMINIMUMNUM:
+  case ISD::FMAXIMUMNUM:
+    if (SDValue Expanded = TLI.expandFMINIMUMNUM_FMAXIMUMNUM(Node, DAG)) {
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arsenm wrote:

expandFMINIMUMNUM_FMAXIMUMNUM cannot fail, it's unnecessary to check this here 

https://github.com/llvm/llvm-project/pull/121464