Unbreak build with gcc 4.3: provide missed includes and silence most annoying warnings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47367 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/LoopUnroll.cpp b/lib/Transforms/Scalar/LoopUnroll.cpp
index b514156..2140b22 100644
--- a/lib/Transforms/Scalar/LoopUnroll.cpp
+++ b/lib/Transforms/Scalar/LoopUnroll.cpp
@@ -36,8 +36,9 @@
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/IntrinsicInst.h"
-#include <cstdio>
 #include <algorithm>
+#include <climits>
+#include <cstdio>
 using namespace llvm;
 
 STATISTIC(NumCompletelyUnrolled, "Number of loops completely unrolled");