Refactor platform-specific code for determining shared stub for keyed load/stores.

src/stub-cache.h

 // Copyright 2011 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 643 matching lines @@
 
   static void GenerateLoadExternalArray(MacroAssembler* masm,
                                         JSObject::ElementsKind elements_kind);
 
   static void GenerateLoadFastElement(MacroAssembler* masm);
 
  private:
   MaybeObject* GetCode(PropertyType type,
                        String* name,
                        InlineCacheState state = MONOMORPHIC);
+
+  MaybeObject* ComputeSharedKeyedLoadElementStub(Map* receiver_map);
 };
 
 
 class StoreStubCompiler: public StubCompiler {
  public:
   explicit StoreStubCompiler(StrictModeFlag strict_mode)
     : strict_mode_(strict_mode) { }
 
   MUST_USE_RESULT MaybeObject* CompileStoreField(JSObject* object,
                                                  int index,
@@ skipping 37 matching lines @@
                                        bool is_js_array);
 
   static void GenerateStoreExternalArray(MacroAssembler* masm,
                                          JSObject::ElementsKind elements_kind);
 
  private:
   MaybeObject* GetCode(PropertyType type,
                        String* name,
                        InlineCacheState state = MONOMORPHIC);
 
+  MaybeObject* ComputeSharedKeyedStoreElementStub(Map* receiver_map);
+
   StrictModeFlag strict_mode_;
 };
 
 
 // Subset of FUNCTIONS_WITH_ID_LIST with custom constant/global call
 // IC stubs.
 #define CUSTOM_CALL_IC_GENERATORS(V)            \
   V(ArrayPush)                                  \
   V(ArrayPop)                                   \
   V(StringCharCodeAt)                           \
@@ skipping 156 matching lines @@
   JSFunction* constant_function_;
   bool is_simple_api_call_;
   FunctionTemplateInfo* expected_receiver_type_;
   CallHandlerInfo* api_call_info_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_STUB_CACHE_H_