[llvm] r336491 - Use const APInt& to avoid extra copy. NFCI.

[Simon Pilgrim via llvm-commits]

Author: rksimon
Date: Sat Jul  7 10:33:48 2018
New Revision: 336491

URL: http://llvm.org/viewvc/llvm-project?rev=336491&view=rev
Log:
Use const APInt& to avoid extra copy. NFCI.

As discussed on D48825.

Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp?rev=336491&r1=336490&r2=336491&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp Sat Jul  7 10:33:48 2018
@@ -1461,7 +1461,7 @@ bool TargetLowering::SimplifyDemandedVec
     SDValue Sub = Op.getOperand(1);
     EVT SubVT = Sub.getValueType();
     unsigned NumSubElts = SubVT.getVectorNumElements();
-    APInt Idx = cast<ConstantSDNode>(Op.getOperand(2))->getAPIntValue();
+    const APInt& Idx = cast<ConstantSDNode>(Op.getOperand(2))->getAPIntValue();
     if (Idx.uge(NumElts - NumSubElts))
       break;
     unsigned SubIdx = Idx.getZExtValue();