Add <cstdio> include where needed by gcc-4.4.
Patch by Samuel Tardieu.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57291 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/UnrollLoop.cpp b/lib/Transforms/Utils/UnrollLoop.cpp
index a86306c..63493dc 100644
--- a/lib/Transforms/Utils/UnrollLoop.cpp
+++ b/lib/Transforms/Utils/UnrollLoop.cpp
@@ -27,6 +27,7 @@
 #include "llvm/Support/Debug.h"
 #include "llvm/Transforms/Utils/Cloning.h"
 #include "llvm/Transforms/Utils/Local.h"
+#include <cstdio>
 
 using namespace llvm;