Fix polymorphic keyed loads for SLOPPY_ARGUMENTS_ELEMENTS

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 1288 matching lines @@
     } else {
       bool is_js_array = receiver_map->instance_type() == JS_ARRAY_TYPE;
       ElementsKind elements_kind = receiver_map->elements_kind();
 
       if (IsFastElementsKind(elements_kind) ||
           IsExternalArrayElementsKind(elements_kind) ||
           IsFixedTypedArrayElementsKind(elements_kind)) {
         cached_stub =
             KeyedLoadFastElementStub(is_js_array,
                                      elements_kind).GetCode(isolate());
+      } else if (elements_kind == SLOPPY_ARGUMENTS_ELEMENTS) {
+        cached_stub = isolate()->builtins()->KeyedLoadIC_SloppyArguments();
       } else {
         ASSERT(elements_kind == DICTIONARY_ELEMENTS);
         cached_stub = KeyedLoadDictionaryElementStub().GetCode(isolate());
       }
     }
 
     handlers->Add(cached_stub);
   }
 }
 
@@ skipping 168 matching lines @@
           Handle<FunctionTemplateInfo>(
               FunctionTemplateInfo::cast(signature->receiver()));
     }
   }
 
   is_simple_api_call_ = true;
 }
 
 
 } }  // namespace v8::internal