Need iostream to be included for the time being.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31820 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/opt/GraphPrinters.cpp b/tools/opt/GraphPrinters.cpp
index 8c0ef77..5e8a859 100644
--- a/tools/opt/GraphPrinters.cpp
+++ b/tools/opt/GraphPrinters.cpp
@@ -18,6 +18,7 @@
 #include "llvm/Pass.h"
 #include "llvm/Value.h"
 #include "llvm/Analysis/CallGraph.h"
+#include <iostream>
 #include <fstream>
 using namespace llvm;