StackColoring: Move set instead of copying. NFC.

llvm-svn: 230864

diff --git a/llvm/lib/CodeGen/StackColoring.cpp b/llvm/lib/CodeGen/StackColoring.cpp
index faf94b6..7572803 100644 (file)
--- a/llvm/lib/CodeGen/StackColoring.cpp
+++ b/llvm/lib/CodeGen/StackColoring.cpp
@@ -364,7 +364,7 @@ void StackColoring::calculateLocalLiveness() {
       }
     }
 
-    BBSet = NextBBSet;
+    BBSet = std::move(NextBBSet);
   }// while changed.
 }