[llvm] [SelectionDAG] Add `f16` soft promotion for `lrint` and `lround` (PR #152684)

[Matt Arsenault via llvm-commits]

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@@ -3811,7 +3820,7 @@ SDValue DAGTypeLegalizer::SoftPromoteHalfOp_FP_EXTEND(SDNode *N) {
   return DAG.getNode(GetPromotionOpcode(SVT, RVT), SDLoc(N), RVT, Op);
 }
 
-SDValue DAGTypeLegalizer::SoftPromoteHalfOp_FP_TO_XINT(SDNode *N) {
+SDValue DAGTypeLegalizer::SoftPromoteHalfOp_UnaryOp(SDNode *N) {
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arsenm wrote:

I wouldn't name this UnaryOp - that implies it's an FP-to-FP same type operation which this is not 

https://github.com/llvm/llvm-project/pull/152684