Move code into anonymous namespaces.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145154 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/Splitter.cpp b/lib/CodeGen/Splitter.cpp
index 16cf9b8..abeaa0d 100644
--- a/lib/CodeGen/Splitter.cpp
+++ b/lib/CodeGen/Splitter.cpp
@@ -38,8 +38,7 @@
 INITIALIZE_PASS_END(LoopSplitter, "loop-splitting",
                 "Split virtual regists across loop boundaries.", false, false)
 
-namespace llvm {
-
+namespace {
   class StartSlotComparator {
   public:
     StartSlotComparator(LiveIntervals &lis) : lis(lis) {}
@@ -50,6 +49,9 @@
   private:
     LiveIntervals &lis;
   };
+}
+
+namespace llvm {
 
   class LoopSplit {
   public: