V8 support for cached accessors.

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 131 matching lines @@
 
   void TraceHandlerCacheHitStats(LookupIterator* lookup);
 
   // Compute the handler either by compiling or by retrieving a cached version.
   Handle<Object> ComputeHandler(LookupIterator* lookup,
                                 Handle<Object> value = Handle<Code>::null());
   virtual Handle<Object> GetMapIndependentHandler(LookupIterator* lookup) {
     UNREACHABLE();
     return Handle<Code>::null();
   }
-  virtual Handle<Code> CompileHandler(LookupIterator* lookup,
-                                      Handle<Object> value,
-                                      CacheHolderFlag cache_holder) {
+  virtual Handle<Object> CompileHandler(LookupIterator* lookup,
+                                        Handle<Object> value,
+                                        CacheHolderFlag cache_holder) {
     UNREACHABLE();
-    return Handle<Code>::null();
+    return Handle<Object>::null();
   }
 
   void UpdateMonomorphicIC(Handle<Object> handler, Handle<Name> name);
   bool UpdatePolymorphicIC(Handle<Name> name, Handle<Object> code);
   void UpdateMegamorphicCache(Map* map, Name* name, Object* code);
 
   StubCache* stub_cache();
 
   void CopyICToMegamorphicCache(Handle<Name> name);
   bool IsTransitionOfMonomorphicTarget(Map* source_map, Map* target_map);
@@ skipping 133 matching lines @@
   virtual Handle<Code> slow_stub() const {
     return isolate()->builtins()->LoadIC_Slow();
   }
 
   // Update the inline cache and the global stub cache based on the
   // lookup result.
   void UpdateCaches(LookupIterator* lookup);
 
   Handle<Object> GetMapIndependentHandler(LookupIterator* lookup) override;
 
-  Handle<Code> CompileHandler(LookupIterator* lookup, Handle<Object> unused,
-                              CacheHolderFlag cache_holder) override;
+  Handle<Object> CompileHandler(LookupIterator* lookup, Handle<Object> unused,
+                                CacheHolderFlag cache_holder) override;
 
  private:
   Handle<Object> SimpleFieldLoad(FieldIndex index);
 
   // Returns 0 if the validity cell check is enough to ensure that the
   // prototype chain from |receiver_map| till |holder| did not change.
   // Returns -1 if the handler has to be compiled or the number of prototype
   // checks otherwise.
   int GetPrototypeCheckCount(Handle<Map> receiver_map, Handle<JSObject> holder);
 
@@ skipping 87 matching lines @@
         UNREACHABLE();
         return Handle<Code>();
     }
   }
 
   // Update the inline cache and the global stub cache based on the
   // lookup result.
   void UpdateCaches(LookupIterator* lookup, Handle<Object> value,
                     JSReceiver::StoreFromKeyed store_mode);
   Handle<Object> GetMapIndependentHandler(LookupIterator* lookup) override;
-  Handle<Code> CompileHandler(LookupIterator* lookup, Handle<Object> value,
-                              CacheHolderFlag cache_holder) override;
+  Handle<Object> CompileHandler(LookupIterator* lookup, Handle<Object> value,
+                                CacheHolderFlag cache_holder) override;
 
  private:
   friend class IC;
 };
 
 
 enum KeyedStoreCheckMap { kDontCheckMap, kCheckMap };
 
 
 enum KeyedStoreIncrementLength { kDontIncrementLength, kIncrementLength };
@@ skipping 85 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_