SDValue LowerSIGN_EXTEND_INREG(SDValue Op, SelectionDAG &DAG) const;
SDValue performStoreCombine(SDNode *N, DAGCombinerInfo &DCI) const;
+ SDValue performShlCombine(SDNode *N, DAGCombinerInfo &DCI) const;
SDValue performMulCombine(SDNode *N, DAGCombinerInfo &DCI) const;
protected: