Avoiding repacking payload for v8::Arguments and v8::AccessorInfo (arm).

src/apiutils.h

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 40 matching lines @@
                                    internal::JSFunction* callee,
                                    internal::Object* holder) {
     implicit_args[v8::Arguments::kDataIndex] = data;
     implicit_args[v8::Arguments::kCalleeIndex] = callee;
     implicit_args[v8::Arguments::kHolderIndex] = holder;
   }
 
   static v8::Arguments NewArguments(internal::Object** implicit_args,
                                     internal::Object** argv, int argc,
                                     bool is_construct_call) {
+    ASSERT(implicit_args[v8::Arguments::kCalleeIndex]->IsJSFunction());
+    ASSERT(implicit_args[v8::Arguments::kHolderIndex]->IsHeapObject());
+
     return v8::Arguments(implicit_args, argv, argc, is_construct_call);
   }
 
   // Introduce an alias for the handle scope data to allow non-friends
   // to access the HandleScope data.
   typedef v8::HandleScope::Data HandleScopeData;
 
   static HandleScopeData* CurrentHandleScope();
 
 #ifdef DEBUG
   static void ZapHandleRange(internal::Object** begin, internal::Object** end);
 #endif
 };
 
 }  // namespace v8
 
 #endif  // V8_APIUTILS_H_