Generation of our home-grown memmove doesn't depend on serializer state anymore.

src/platform.h

Index: src/platform.h
diff --git a/src/platform.h b/src/platform.h
index d82dea191948892c1635d9ebd3f5dd14c8809738..31b7bdfd36d2c270265ed095f9e5374a0a0685b8 100644
--- a/src/platform.h
+++ b/src/platform.h
@@ -151,7 +151,7 @@ class OS {
  public:
   // Initializes the platform OS support that depend on CPU features. This is
   // called after CPU initialization.
-  static void PostSetUp(bool serializer_enabled);
+  static void PostSetUp();
 
   // Returns the accumulated user time for thread. This routine
   // can be used for profiling. The implementation should