[SelectionDAG] Use APInt move assignment to avoid 2 memory allocations and copies...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@300091 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index 034591a00fecd790f6980b1694682557b8584ff1..c2a4b55ee1b3a607882f775392eb723c7270794c 100644 (file)
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -731,8 +731,8 @@ bool TargetLowering::SimplifyDemandedBits(SDValue Op,
       }
     }
 
-    KnownZero = KnownZeroOut;
-    KnownOne  = KnownOneOut;
+    KnownZero = std::move(KnownZeroOut);
+    KnownOne  = std::move(KnownOneOut);
     break;
   case ISD::SELECT:
     if (SimplifyDemandedBits(Op.getOperand(2), NewMask, KnownZero,