Apply the VISIBILITY_HIDDEN field to the remaining anonymous classes in
the Transforms library. This reduces debug library size by 132 KB, debug
binary size by 376 KB, and reduces link time for llvm tools slightly.

llvm-svn: 33939
diff --git a/llvm/lib/Transforms/Scalar/LowerPacked.cpp b/llvm/lib/Transforms/Scalar/LowerPacked.cpp
index c2ec981..116ccca 100644
--- a/llvm/lib/Transforms/Scalar/LowerPacked.cpp
+++ b/llvm/lib/Transforms/Scalar/LowerPacked.cpp
@@ -19,6 +19,7 @@
 #include "llvm/Function.h"
 #include "llvm/Instructions.h"
 #include "llvm/Pass.h"
+#include "llvm/Support/Compiler.h"
 #include "llvm/Support/InstVisitor.h"
 #include "llvm/Support/Streams.h"
 #include "llvm/ADT/StringExtras.h"
@@ -36,7 +37,8 @@
 ///
 /// @brief Transforms packed instructions to simpler instructions.
 ///
-class LowerPacked : public FunctionPass, public InstVisitor<LowerPacked> {
+class VISIBILITY_HIDDEN LowerPacked 
+  : public FunctionPass, public InstVisitor<LowerPacked> {
 public:
    /// @brief Lowers packed operations to scalar operations.
    /// @param F The fuction to process