cleaned code
add some comments


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6674 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/ModuloScheduling/ModuloSchedGraph.h b/lib/CodeGen/ModuloScheduling/ModuloSchedGraph.h
index db3a9a3..0d6f1ad 100644
--- a/lib/CodeGen/ModuloScheduling/ModuloSchedGraph.h
+++ b/lib/CodeGen/ModuloScheduling/ModuloSchedGraph.h
@@ -120,7 +120,7 @@
                        const Instruction * _inst,
                        int indexInBB, const TargetMachine &target);
 
-
+  
   friend std::ostream & operator<<(std::ostream & os,
                                    const ModuloSchedGraphNode & edge);