Index: include/llvm/Analysis/CFGPrinter.h
===================================================================
--- include/llvm/Analysis/CFGPrinter.h
+++ include/llvm/Analysis/CFGPrinter.h
@@ -172,8 +172,7 @@
 
     // Prepend a 'W' to indicate that this is a weight rather than the actual
     // profile count (due to scaling).
-    Twine Attrs = "label=\"W:" + Twine(Weight->getZExtValue()) + "\"";
-    return Attrs.str();
+    return ("label=\"W:" + Twine(Weight->getZExtValue()) + "\"").str();
   }
 };
 } // End llvm namespace
Index: test/Other/cfg-printer-branch-weights.ll
===================================================================
--- /dev/null
+++ test/Other/cfg-printer-branch-weights.ll
@@ -0,0 +1,19 @@
+;RUN: opt < %s -analyze -dot-cfg 2>/dev/null
+;RUN: FileCheck %s -input-file=cfg.f.dot
+
+define void @f(i32) {
+entry:
+  %check = icmp sgt i32 %0, 0
+  br i1 %check, label %if, label %exit, !prof !0
+
+; CHECK: label="W:1"
+; CHECK-NOT: ["];
+if:                     ; preds = %entry
+  br label %exit
+; CHECK: label="W:200"
+; CHECK-NOT: ["];
+exit:                   ; preds = %entry, %if
+  ret void
+}
+
+!0 = !{!"branch_weights", i32 1, i32 200}