Fetch strictmode in the interceptor setter from the IC.

src/stub-cache.cc

 // Copyright 2012 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 914 matching lines @@
   RETURN_IF_EMPTY_HANDLE(isolate, result);
   // This is call IC. In this case, we simply return the undefined result which
   // will lead to an exception when trying to invoke the result as a
   // function.
   return *result;
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, StoreInterceptorProperty) {
   HandleScope scope(isolate);
-  ASSERT(args.length() == 4);
-  Handle<JSObject> recv(JSObject::cast(args[0]));
-  Handle<Name> name(Name::cast(args[1]));
-  Handle<Object> value(args[2], isolate);
-  ASSERT(args.smi_at(3) == kStrictMode || args.smi_at(3) == kNonStrictMode);
-  StrictModeFlag strict_mode = static_cast<StrictModeFlag>(args.smi_at(3));
-  ASSERT(recv->HasNamedInterceptor());
+  ASSERT(args.length() == 3);
+  StoreIC ic(IC::NO_EXTRA_FRAME, isolate);
+
+  Handle<JSObject> receiver = args.at<JSObject>(0);
+  Handle<Name> name = args.at<Name>(1);
+  Handle<Object> value = args.at<Object>(2);
+  ASSERT(receiver->HasNamedInterceptor());
   PropertyAttributes attr = NONE;
   Handle<Object> result = JSObject::SetPropertyWithInterceptor(
-      recv, name, value, attr, strict_mode);
+      receiver, name, value, attr, ic.strict_mode());
   RETURN_IF_EMPTY_HANDLE(isolate, result);
   return *result;
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, KeyedLoadPropertyWithInterceptor) {
   JSObject* receiver = JSObject::cast(args[0]);
   ASSERT(args.smi_at(1) >= 0);
   uint32_t index = args.smi_at(1);
   return receiver->GetElementWithInterceptor(receiver, index);
@@ skipping 952 matching lines @@
           Handle<FunctionTemplateInfo>(
               FunctionTemplateInfo::cast(signature->receiver()));
     }
   }
 
   is_simple_api_call_ = true;
 }
 
 
 } }  // namespace v8::internal