[llvm] [SelectionDAG] Add PARTIAL_REDUCE_U/SMLA ISD Nodes (PR #125207)

[James Chesterman via llvm-commits]

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@@ -2824,6 +2833,12 @@ SDValue DAGTypeLegalizer::PromoteIntOp_VECTOR_FIND_LAST_ACTIVE(SDNode *N,
   return SDValue(DAG.UpdateNodeOperands(N, NewOps), 0);
 }
 
+SDValue DAGTypeLegalizer::PromoteIntOp_PARTIAL_REDUCE_MLA(SDNode *N) {
+  SDValue Res = DAG.expandPartialReduceMLA(N);
+  ReplaceValueWith(SDValue(N, 0), Res);
+  return SDValue();
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JamesChesterman wrote:

Done

https://github.com/llvm/llvm-project/pull/125207