Make the EnableLoadPRE variable static.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73398 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp
index 673d38b..9513779 100644
--- a/lib/Transforms/Scalar/GVN.cpp
+++ b/lib/Transforms/Scalar/GVN.cpp
@@ -48,7 +48,7 @@
 
 static cl::opt<bool> EnablePRE("enable-pre",
                                cl::init(true), cl::Hidden);
-cl::opt<bool> EnableLoadPRE("enable-load-pre", cl::init(true));
+static cl::opt<bool> EnableLoadPRE("enable-load-pre", cl::init(true));
 
 //===----------------------------------------------------------------------===//
 //                         ValueTable Class