Polymorphism support for load IC.

src/ic.h

 // Copyright 2012 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 147 matching lines @@
   Failure* TypeError(const char* type,
                      Handle<Object> object,
                      Handle<Object> key);
   Failure* ReferenceError(const char* type, Handle<String> name);
 
   // Access the target code for the given IC address.
   static inline Code* GetTargetAtAddress(Address address);
   static inline void SetTargetAtAddress(Address address, Code* target);
   static void PostPatching(Address address, Code* target, Code* old_target);
 
+  virtual void UpdateMonomorphicIC(Handle<JSObject> receiver,
+                                   Handle<Code> handler,
+                                   Handle<String> name) {
+    set_target(*handler);
+  }
+  bool UpdatePolymorphicIC(State state,
+                           StrictModeFlag strict_mode,
+                           Handle<JSObject> receiver,
+                           Handle<String> name,
+                           Handle<Code> code);
   void PatchCache(State state,
                   StrictModeFlag strict_mode,
                   Handle<JSObject> receiver,
                   Handle<String> name,
                   Handle<Code> code);
   virtual void UpdateMegamorphicCache(Map* map, String* name, Code* code);
   virtual Handle<Code> megamorphic_stub() {
     UNREACHABLE();
     return Handle<Code>::null();
   }
@@ skipping 192 matching lines @@
   virtual Handle<Code> megamorphic_stub() {
     return isolate()->builtins()->LoadIC_Megamorphic();
   }
 
   // Update the inline cache and the global stub cache based on the
   // lookup result.
   void UpdateCaches(LookupResult* lookup,
                     State state,
                     Handle<Object> object,
                     Handle<String> name);
-  virtual Handle<Code> ComputeLoadMonomorphic(LookupResult* lookup,
-                                              Handle<JSObject> receiver,
-                                              Handle<String> name);
+  virtual void UpdateMonomorphicIC(Handle<JSObject> receiver,
+                                   Handle<Code> handler,
+                                   Handle<String> name);
+  virtual Handle<Code> ComputeLoadHandler(LookupResult* lookup,
+                                          Handle<JSObject> receiver,
+                                          Handle<String> name);
 
  private:
   // Stub accessors.
   static Handle<Code> initialize_stub() {
     return Isolate::Current()->builtins()->LoadIC_Initialize();
   }
   virtual Handle<Code> pre_monomorphic_stub() {
     return isolate()->builtins()->LoadIC_PreMonomorphic();
   }
 
@@ skipping 48 matching lines @@
   Handle<Code> LoadElementStub(Handle<JSObject> receiver);
 
   virtual Handle<Code> megamorphic_stub() {
     return isolate()->builtins()->KeyedLoadIC_Generic();
   }
   virtual Handle<Code> generic_stub() const {
     return isolate()->builtins()->KeyedLoadIC_Generic();
   }
 
   // Update the inline cache.
-  virtual Handle<Code> ComputeLoadMonomorphic(LookupResult* lookup,
-                                              Handle<JSObject> receiver,
-                                              Handle<String> name);
+  virtual void UpdateMonomorphicIC(Handle<JSObject> receiver,
+                                   Handle<Code> handler,
+                                   Handle<String> name);
+  virtual Handle<Code> ComputeLoadHandler(LookupResult* lookup,
+                                          Handle<JSObject> receiver,
+                                          Handle<String> name);
   virtual void UpdateMegamorphicCache(Map* map, String* name, Code* code) { }
 
  private:
   // Stub accessors.
   static Handle<Code> initialize_stub() {
     return Isolate::Current()->builtins()->KeyedLoadIC_Initialize();
   }
   virtual Handle<Code> pre_monomorphic_stub() {
     return isolate()->builtins()->KeyedLoadIC_PreMonomorphic();
   }
@@ skipping 355 matching lines @@
 // Helper for BinaryOpIC and CompareIC.
 enum InlinedSmiCheck { ENABLE_INLINED_SMI_CHECK, DISABLE_INLINED_SMI_CHECK };
 void PatchInlinedSmiCode(Address address, InlinedSmiCheck check);
 
 DECLARE_RUNTIME_FUNCTION(MaybeObject*, KeyedLoadIC_Miss);
 DECLARE_RUNTIME_FUNCTION(MaybeObject*, KeyedLoadIC_MissFromStubFailure);
 
 } }  // namespace v8::internal
 
 #endif  // V8_IC_H_