StackColoring: Move set instead of copying. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230864 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/StackColoring.cpp b/lib/CodeGen/StackColoring.cpp
index faf94b67fe77b08e0c8c0c935b5159fc40e6ed22..7572803305014a1b6b807520c1f3bf3c7276abec 100644 (file)
--- a/lib/CodeGen/StackColoring.cpp
+++ b/lib/CodeGen/StackColoring.cpp
@@ -364,7 +364,7 @@ void StackColoring::calculateLocalLiveness() {
       }
     }
 
-    BBSet = NextBBSet;
+    BBSet = std::move(NextBBSet);
   }// while changed.
 }