add SDValue expandThreeWayCmp to TargetLowering.h

Author: miguelraz

llvm/include/llvm/CodeGen/TargetLowering.h

@@ -5275,6 +5275,10 @@ class TargetLowering : public TargetLoweringBase {
   /// method accepts integers as its arguments.
   SDValue expandAddSubSat(SDNode *Node, SelectionDAG &DAG) const;
 
+  /// Method for building the DAG expansion of ISD::[US]THREEWAYCMP. This
+  /// method accepts integers as its arguments.
+  SDValue expandThreeWayCmp(SDNode *Node, SelectionDAG &DAG) const;
+
   /// Method for building the DAG expansion of ISD::[US]SHLSAT. This
   /// method accepts integers as its arguments.
   SDValue expandShlSat(SDNode *Node, SelectionDAG &DAG) const;