Tweak the TurboFan pipeline for stub compilation.

src/runtime/runtime-object.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/v8.h"
 
 #include "src/arguments.h"
 #include "src/bootstrapper.h"
 #include "src/debug.h"
 #include "src/runtime/runtime.h"
@@ skipping 1479 matching lines @@
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 2);
   CONVERT_ARG_CHECKED(Object, obj, 0);
   CONVERT_ARG_CHECKED(Object, value, 1);
   if (!obj->IsJSValue()) return value;
   JSValue::cast(obj)->set_value(value);
   return value;
 }
 
 
+RUNTIME_FUNCTION(Runtime_JSValueGetValue) {
+  SealHandleScope shs(isolate);
+  DCHECK(args.length() == 1);
+  CONVERT_ARG_CHECKED(JSValue, obj, 0);
+  return JSValue::cast(obj)->value();
+}
+
+
 RUNTIME_FUNCTION(Runtime_ObjectEquals) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 2);
   CONVERT_ARG_CHECKED(Object, obj1, 0);
   CONVERT_ARG_CHECKED(Object, obj2, 1);
   return isolate->heap()->ToBoolean(obj1 == obj2);
 }
 
 
 RUNTIME_FUNCTION(Runtime_IsObject) {
@@ skipping 61 matching lines @@
   CONVERT_PROPERTY_ATTRIBUTES_CHECKED(attrs, 3);
 
   RETURN_FAILURE_ON_EXCEPTION(
       isolate,
       JSObject::DefineAccessor(object, name, isolate->factory()->null_value(),
                                setter, attrs));
   return isolate->heap()->undefined_value();
 }
 }
 }  // namespace v8::internal