[llvm] [AArch64][SME2] Add FORM_STRIDED_TUPLE pseudo nodes (PR #116399)

[Benjamin Maxwell via llvm-commits]

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@@ -504,6 +504,8 @@ class AArch64DAGToDAGISel : public SelectionDAGISel {
 
   bool SelectAllActivePredicate(SDValue N);
   bool SelectAnyPredicate(SDValue N);
+
+  void SelectFormTuplePseudo(SDNode *N);
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MacDue wrote:

nit: This is unused now

https://github.com/llvm/llvm-project/pull/116399