[ic] Split megamorphic stub cache in two caches (for loads and for stores).

src/ic/ic.h

 // 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.
 
 #ifndef V8_IC_H_
 #define V8_IC_H_
 
 #include "src/ic/ic-state.h"
 #include "src/macro-assembler.h"
 #include "src/messages.h"
@@ skipping 135 matching lines @@
                                       Handle<Object> value,
                                       CacheHolderFlag cache_holder) {
     UNREACHABLE();
     return Handle<Code>::null();
   }
 
   void UpdateMonomorphicIC(Handle<Code> handler, Handle<Name> name);
   bool UpdatePolymorphicIC(Handle<Name> name, Handle<Code> code);
   void UpdateMegamorphicCache(Map* map, Name* name, Code* code);
 
+  StubCache* stub_cache();
+
   void CopyICToMegamorphicCache(Handle<Name> name);
   bool IsTransitionOfMonomorphicTarget(Map* source_map, Map* target_map);
   void PatchCache(Handle<Name> name, Handle<Code> code);
   Code::Kind kind() const { return kind_; }
   bool is_keyed() const {
     return kind_ == Code::KEYED_LOAD_IC || kind_ == Code::KEYED_STORE_IC;
   }
   Code::Kind handler_kind() const {
     if (kind_ == Code::KEYED_LOAD_IC) return Code::LOAD_IC;
     DCHECK(kind_ == Code::LOAD_IC || kind_ == Code::STORE_IC ||
@@ skipping 348 matching lines @@
 
 // Helper for BinaryOpIC and CompareIC.
 enum InlinedSmiCheck { ENABLE_INLINED_SMI_CHECK, DISABLE_INLINED_SMI_CHECK };
 void PatchInlinedSmiCode(Isolate* isolate, Address address,
                          InlinedSmiCheck check);
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_IC_H_