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

[James Chesterman via llvm-commits]

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@@ -4435,6 +4448,12 @@ SDValue DAGTypeLegalizer::SplitVecOp_VECTOR_HISTOGRAM(SDNode *N) {
                                 MMO, IndexType);
 }
 
+SDValue DAGTypeLegalizer::SplitVecOp_PARTIAL_REDUCE_MLA(SDNode *N) {
+  SDValue Res = TLI.expandPartialReduceMLA(N, DAG);
+  ReplaceValueWith(SDValue(N, 0), Res);
+  return SDValue();
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JamesChesterman wrote:

Yes, changed it now.

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