13028 struct NodeExtensionHelper {  struct
13030   bool SupportsZExt;
13035   bool SupportsSExt;
13038   bool EnforceOneUse;
13041   bool CheckMask;
13044   SDValue Mask;
13047   SDValue VL;
13049   SDValue OrigOperand;
13053   SDValue getSource() const {  in getSource()
13066   bool isSplat() const {  in isSplat()
13073   SDValue getOrCreateExtendedOp(SDNode *Root, SelectionDAG &DAG,  in getOrCreateExtendedOp()
13112   static MVT getNarrowType(const SDNode *Root) {  in getNarrowType()
13130   static unsigned getSameExtensionOpcode(unsigned Opcode, bool IsSExt) {  in getSameExtensionOpcode()
13152   static unsigned getSUOpcode(unsigned Opcode) {  in getSUOpcode()
13160   static unsigned getWOpcode(unsigned Opcode, bool IsSExt) {  in getWOpcode()
13173   using CombineToTry = std::function<std::optional<CombineResult>(
13179   bool needToPromoteOtherUsers() const { return EnforceOneUse; }  in needToPromoteOtherUsers()
13183   void fillUpExtensionSupport(SDNode *Root, SelectionDAG &DAG,  in fillUpExtensionSupport()
13273   static bool isSupportedRoot(const SDNode *Root, const SelectionDAG &DAG) {  in isSupportedRoot()
13297   NodeExtensionHelper(SDNode *Root, unsigned OperandIdx, SelectionDAG &DAG,  in NodeExtensionHelper()  function
13331   bool isVLCompatible(SDValue VL) const {  in isVLCompatible()
13336   bool isMaskCompatible(SDValue Mask) const {  in isMaskCompatible()
13342   getMaskAndVL(const SDNode *Root, SelectionDAG &DAG,  in getMaskAndVL()
13359   bool areVLAndMaskCompatible(SDNode *Root, SelectionDAG &DAG,  in areVLAndMaskCompatible()
13367   static bool isCommutative(const SDNode *N) {  in isCommutative()