[TargetLowering] Use getShiftAmountConstant in CTTZTableLookup. NFC

Author: topperc

llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp

@@ -9471,7 +9471,7 @@ SDValue TargetLowering::CTTZTableLookup(SDNode *Node, SelectionDAG &DAG,
       ISD::SRL, DL, VT,
       DAG.getNode(ISD::MUL, DL, VT, DAG.getNode(ISD::AND, DL, VT, Op, Neg),
                   DAG.getConstant(DeBruijn, DL, VT)),
-      DAG.getConstant(ShiftAmt, DL, VT));
+      DAG.getShiftAmountConstant(ShiftAmt, VT, DL));
   Lookup = DAG.getSExtOrTrunc(Lookup, DL, getPointerTy(TD));
 
   SmallVector<uint8_t> Table(BitWidth, 0);