From: Craig Topper <craig.topper@gmail.com>
Date: Thu, 13 Apr 2017 18:25:53 +0000 (+0000)
Subject: [ValueTracking] Move a temporary APInt instead of copying it.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=a7bdbbca61d24c27c61cb961c6139a9026dde5c7;p=llvm

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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@300233 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp
index 0309afd98af..75ccc0ee64f 100644
--- a/lib/Analysis/ValueTracking.cpp
+++ b/lib/Analysis/ValueTracking.cpp
@@ -947,7 +947,7 @@ static void computeKnownBitsFromOperator(const Operator *I, APInt &KnownZero,
     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: {