Introduce {FAST,SLOW}_STRING_WRAPPER_ELEMENTS

src/runtime/runtime-proxy.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/runtime/runtime-utils.h"
 
 #include "src/arguments.h"
 #include "src/elements.h"
 #include "src/factory.h"
 #include "src/isolate-inl.h"
@@ skipping 40 matching lines @@
         isolate, result, Execution::Call(isolate, target, receiver,
                                          arguments_length, argv.start()));
     return *result;
   }
   // 7. Let argArray be CreateArrayFromList(argumentsList).
   Handle<JSArray> arg_array = isolate->factory()->NewJSArray(
       FAST_ELEMENTS, arguments_length, arguments_length);
   ElementsAccessor* accessor = arg_array->GetElementsAccessor();
   {
     DisallowHeapAllocation no_gc;
-    FixedArrayBase* elements = arg_array->elements();
     for (int i = 0; i < arguments_length; i++) {
-      accessor->Set(elements, i, args[i + 1]);
+      accessor->Set(arg_array, i, args[i + 1]);
     }
   }
   // 8. Return Call(trap, handler, «target, thisArgument, argArray»).
   Handle<Object> trap_result;
   Handle<Object> trap_args[] = {target, receiver, arg_array};
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
       isolate, trap_result,
       Execution::Call(isolate, trap, handler, arraysize(trap_args), trap_args));
   return *trap_result;
 }
@@ skipping 38 matching lines @@
         isolate, result, Execution::New(isolate, target, new_target,
                                         arguments_length, argv.start()));
     return *result;
   }
   // 7. Let argArray be CreateArrayFromList(argumentsList).
   Handle<JSArray> arg_array = isolate->factory()->NewJSArray(
       FAST_ELEMENTS, arguments_length, arguments_length);
   ElementsAccessor* accessor = arg_array->GetElementsAccessor();
   {
     DisallowHeapAllocation no_gc;
-    FixedArrayBase* elements = arg_array->elements();
     for (int i = 0; i < arguments_length; i++) {
-      accessor->Set(elements, i, args[i + 1]);
+      accessor->Set(arg_array, i, args[i + 1]);
     }
   }
   // 8. Let newObj be ? Call(trap, handler, «target, argArray, newTarget »).
   Handle<Object> new_object;
   Handle<Object> trap_args[] = {target, arg_array, new_target};
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
       isolate, new_object,
       Execution::Call(isolate, trap, handler, arraysize(trap_args), trap_args));
   // 9. If Type(newObj) is not Object, throw a TypeError exception.
   if (!new_object->IsJSReceiver()) {
@@ skipping 33 matching lines @@
 RUNTIME_FUNCTION(Runtime_JSProxyRevoke) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(JSProxy, proxy, 0);
   JSProxy::Revoke(proxy);
   return isolate->heap()->undefined_value();
 }
 
 }  // namespace internal
 }  // namespace v8