[TargetLowering] Use getShiftAmountConstant in buildSDIVPow2WithCMov.

Author: topperc

llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp

@@ -6482,8 +6482,8 @@ SDValue TargetLowering::buildSDIVPow2WithCMov(
   Created.push_back(CMov.getNode());
 
   // Divide by pow2.
-  SDValue SRA =
-      DAG.getNode(ISD::SRA, DL, VT, CMov, DAG.getConstant(Lg2, DL, VT));
+  SDValue SRA = DAG.getNode(ISD::SRA, DL, VT, CMov,
+                            DAG.getShiftAmountConstant(Lg2, VT, DL));
 
   // If we're dividing by a positive value, we're done.  Otherwise, we must
   // negate the result.