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

llvm-svn: 14622
diff --git a/llvm/lib/CodeGen/IntrinsicLowering.cpp b/llvm/lib/CodeGen/IntrinsicLowering.cpp
index 6af333e..c200aeb 100644
--- a/llvm/lib/CodeGen/IntrinsicLowering.cpp
+++ b/llvm/lib/CodeGen/IntrinsicLowering.cpp
@@ -16,6 +16,8 @@
 #include "llvm/DerivedTypes.h"
 #include "llvm/Module.h"
 #include "llvm/iOther.h"
+#include <iostream>
+
 using namespace llvm;
 
 template <class ArgIt>