Don't MISS if you read the hole from certain FastHoley arrays.

src/ic/handler-compiler.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/cpu-profiler.h"
 #include "src/ic/call-optimization.h"
 #include "src/ic/handler-compiler.h"
 #include "src/ic/ic.h"
@@ skipping 518 matching lines @@
     Handle<Map> receiver_map = receiver_maps->at(i);
     Handle<Code> cached_stub;
 
     if (receiver_map->IsStringMap()) {
       cached_stub = LoadIndexedStringStub(isolate()).GetCode();
     } else if (receiver_map->instance_type() < FIRST_JS_RECEIVER_TYPE) {
       cached_stub = isolate()->builtins()->KeyedLoadIC_Slow();
     } else {
       bool is_js_array = receiver_map->instance_type() == JS_ARRAY_TYPE;
       ElementsKind elements_kind = receiver_map->elements_kind();
+
+      // No need to check for an elements-free prototype chain here, the
+      // generated stub code needs to check that dynamically anyway.
+      bool convert_hole_to_undefined =
+          is_js_array && elements_kind == FAST_HOLEY_ELEMENTS &&
+          *receiver_map == isolate()->get_initial_js_array_map(elements_kind);
+
       if (receiver_map->has_indexed_interceptor()) {
         cached_stub = LoadIndexedInterceptorStub(isolate()).GetCode();
       } else if (IsSloppyArgumentsElements(elements_kind)) {
         cached_stub = KeyedLoadSloppyArgumentsStub(isolate()).GetCode();
       } else if (IsFastElementsKind(elements_kind) ||
                  IsExternalArrayElementsKind(elements_kind) ||
                  IsFixedTypedArrayElementsKind(elements_kind)) {
-        cached_stub = LoadFastElementStub(isolate(), is_js_array, elements_kind)
-                          .GetCode();
+        cached_stub = LoadFastElementStub(isolate(), is_js_array, elements_kind,
+                                          convert_hole_to_undefined).GetCode();
       } else {
         DCHECK(elements_kind == DICTIONARY_ELEMENTS);
         cached_stub = LoadDictionaryElementStub(isolate()).GetCode();
       }
     }
 
     handlers->Add(cached_stub);
   }
 }
 }
 }  // namespace v8::internal