[llvm] [TargetLowering][SelectionDAG] Exploit nneg Flag in UINT_TO_FP (PR #108931)

[Simon Pilgrim via llvm-commits]

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@@ -5222,7 +5222,7 @@ SDValue DAGTypeLegalizer::WidenVecRes_Convert(SDNode *N) {
     InVTEC = InVT.getVectorElementCount();
     if (InVTEC == WidenEC) {
       if (N->getNumOperands() == 1)
-        return DAG.getNode(Opcode, DL, WidenVT, InOp);
+        return DAG.getNode(Opcode, DL, WidenVT, InOp, Flags);
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RKSimon wrote:

I assume we don't care that the new widened elements might create poison due to the addition of the flags?

https://github.com/llvm/llvm-project/pull/108931