CallICStub with a "never patch" approach until customization.

src/objects.cc

 // Copyright 2013 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 "v8.h"
 
 #include "accessors.h"
 #include "allocation-site-scopes.h"
 #include "api.h"
 #include "arguments.h"
@@ skipping 10719 matching lines @@
   ASSERT_EQ(builtins->builtin(Builtins::kJSConstructStubGeneric),
             *RawField(this, kConstructStubOffset));
   set_construct_stub(builtins->builtin(Builtins::kJSConstructStubCountdown));
   // The map survived the gc, so there may be objects referencing it.
   set_live_objects_may_exist(true);
 }
 
 
 void SharedFunctionInfo::ResetForNewContext(int new_ic_age) {
   code()->ClearInlineCaches();
+  // If we clear ICs, we need to clear the type feedback vector too, since
+  // CallICs are synced with a feedback vector slot.
+  ClearTypeFeedbackInfo();
   set_ic_age(new_ic_age);
   if (code()->kind() == Code::FUNCTION) {
     code()->set_profiler_ticks(0);
     if (optimization_disabled() &&
         opt_count() >= FLAG_max_opt_count) {
       // Re-enable optimizations if they were disabled due to opt_count limit.
       set_optimization_disabled(false);
       code()->set_optimizable(true);
     }
     set_opt_count(0);
@@ skipping 6467 matching lines @@
 #define ERROR_MESSAGES_TEXTS(C, T) T,
   static const char* error_messages_[] = {
       ERROR_MESSAGES_LIST(ERROR_MESSAGES_TEXTS)
   };
 #undef ERROR_MESSAGES_TEXTS
   return error_messages_[reason];
 }
 
 
 } }  // namespace v8::internal