Fix a bunch of namespace polution.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101376 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp
index 2c62815..321def7 100644
--- a/lib/Transforms/Scalar/GVN.cpp
+++ b/lib/Transforms/Scalar/GVN.cpp
@@ -1217,7 +1217,7 @@
   return ConstantFoldLoadFromConstPtr(Src, &TD);
 }
 
-
+namespace {
 
 struct AvailableValueInBlock {
   /// BB - The basic block in question.
@@ -1291,6 +1291,8 @@
   }
 };
 
+}
+
 /// ConstructSSAForLoadSet - Given a set of loads specified by ValuesPerBlock,
 /// construct SSA form, allowing us to eliminate LI.  This returns the value
 /// that should be used at LI's definition site.