Use a dictionary-mode code cache on the map rather than a dual system.

src/builtins.cc

 // Copyright 2012 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/builtins.h"
 
 #include "src/api.h"
 #include "src/api-arguments.h"
 #include "src/api-natives.h"
 #include "src/base/once.h"
@@ skipping 4439 matching lines @@
 static void Generate_KeyedStoreIC_Megamorphic_Strict(MacroAssembler* masm) {
   KeyedStoreIC::GenerateMegamorphic(masm, STRICT);
 }
 
 
 static void Generate_KeyedStoreIC_Miss(MacroAssembler* masm) {
   KeyedStoreIC::GenerateMiss(masm);
 }
 
 
-static void Generate_KeyedStoreIC_Initialize(MacroAssembler* masm) {
-  KeyedStoreIC::GenerateInitialize(masm);
-}
-
-
-static void Generate_KeyedStoreIC_Initialize_Strict(MacroAssembler* masm) {
-  KeyedStoreIC::GenerateInitialize(masm);
-}
-
-
-static void Generate_KeyedStoreIC_PreMonomorphic(MacroAssembler* masm) {
-  KeyedStoreIC::GeneratePreMonomorphic(masm);
-}
-
-
-static void Generate_KeyedStoreIC_PreMonomorphic_Strict(MacroAssembler* masm) {
-  KeyedStoreIC::GeneratePreMonomorphic(masm);
-}
-
-
 static void Generate_Return_DebugBreak(MacroAssembler* masm) {
   DebugCodegen::GenerateDebugBreakStub(masm,
                                        DebugCodegen::SAVE_RESULT_REGISTER);
 }
 
 
 static void Generate_Slot_DebugBreak(MacroAssembler* masm) {
   DebugCodegen::GenerateDebugBreakStub(masm,
                                        DebugCodegen::IGNORE_RESULT_REGISTER);
 }
@@ skipping 277 matching lines @@
 BUILTIN_LIST_T(DEFINE_BUILTIN_ACCESSOR_T)
 BUILTIN_LIST_H(DEFINE_BUILTIN_ACCESSOR_H)
 BUILTIN_LIST_DEBUG_A(DEFINE_BUILTIN_ACCESSOR_A)
 #undef DEFINE_BUILTIN_ACCESSOR_C
 #undef DEFINE_BUILTIN_ACCESSOR_A
 #undef DEFINE_BUILTIN_ACCESSOR_T
 #undef DEFINE_BUILTIN_ACCESSOR_H
 
 }  // namespace internal
 }  // namespace v8