[llvm] r300233 - [ValueTracking] Move a temporary APInt instead of copying it.

[Craig Topper via llvm-commits]

Author: ctopper
Date: Thu Apr 13 13:25:53 2017
New Revision: 300233

URL: http://llvm.org/viewvc/llvm-project?rev=300233&view=rev
Log:
[ValueTracking] Move a temporary APInt instead of copying it.

Modified:
    llvm/trunk/lib/Analysis/ValueTracking.cpp

Modified: llvm/trunk/lib/Analysis/ValueTracking.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/ValueTracking.cpp?rev=300233&r1=300232&r2=300233&view=diff
==============================================================================
--- llvm/trunk/lib/Analysis/ValueTracking.cpp (original)
+++ llvm/trunk/lib/Analysis/ValueTracking.cpp Thu Apr 13 13:25:53 2017
@@ -947,7 +947,7 @@ static void computeKnownBitsFromOperator
     APInt KnownZeroOut = (KnownZero & KnownZero2) | (KnownOne & KnownOne2);
     // Output known-1 are known to be set if set in only one of the LHS, RHS.
     KnownOne = (KnownZero & KnownOne2) | (KnownOne & KnownZero2);
-    KnownZero = KnownZeroOut;
+    KnownZero = std::move(KnownZeroOut);
     break;
   }
   case Instruction::Mul: {