Added copyright header to all C++ source files.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9291 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/opt/GraphPrinters.cpp b/tools/opt/GraphPrinters.cpp
index 28b18d1..83708ec 100644
--- a/tools/opt/GraphPrinters.cpp
+++ b/tools/opt/GraphPrinters.cpp
@@ -1,4 +1,12 @@
//===- GraphPrinters.cpp - DOT printers for various graph types -----------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
//
// This file defines several printers for various different types of graphs used
// by the LLVM infrastructure. It uses the generic graph interface to convert