Add #include <iostream> since Value.h does not #include it any more.

llvm-svn: 14622
diff --git a/llvm/lib/CodeGen/InstrSched/SchedGraph.cpp b/llvm/lib/CodeGen/InstrSched/SchedGraph.cpp
index e88c801..9688f39 100644
--- a/llvm/lib/CodeGen/InstrSched/SchedGraph.cpp
+++ b/llvm/lib/CodeGen/InstrSched/SchedGraph.cpp
@@ -22,6 +22,7 @@
 #include "llvm/Target/TargetMachine.h"
 #include "../../Target/SparcV9/SparcV9RegInfo.h"
 #include "Support/STLExtras.h"
+#include <iostream>
 
 namespace llvm {