Handlify the runtime lookup of CallIC and KeyedCallIC.

src/ic.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 185 matching lines @@
 class CallICBase: public IC {
  public:
   class Contextual: public BitField<bool, 0, 1> {};
   class StringStubState: public BitField<StringStubFeedback, 1, 1> {};
 
  protected:
   CallICBase(Code::Kind kind, Isolate* isolate)
       : IC(EXTRA_CALL_FRAME, isolate), kind_(kind) {}
 
  public:
+  // Returns a JSFunction or a Failure.
   MUST_USE_RESULT MaybeObject* LoadFunction(State state,
                                             Code::ExtraICState extra_ic_state,
                                             Handle<Object> object,
                                             Handle<String> name);
 
  protected:
   Code::Kind kind_;
 
   bool TryUpdateExtraICState(LookupResult* lookup,
                              Handle<Object> object,
                              Code::ExtraICState* extra_ic_state);
 
   MUST_USE_RESULT MaybeObject* ComputeMonomorphicStub(
       LookupResult* lookup,
       State state,
       Code::ExtraICState extra_ic_state,
       Handle<Object> object,
       Handle<String> name);
 
-  // Update the inline cache and the global stub cache based on the
-  // lookup result.
+  // Update the inline cache and the global stub cache based on the lookup
+  // result.
   void UpdateCaches(LookupResult* lookup,
                     State state,
                     Code::ExtraICState extra_ic_state,
                     Handle<Object> object,
                     Handle<String> name);
 
-  // Returns a JSFunction if the object can be called as a function,
-  // and patches the stack to be ready for the call.
-  // Otherwise, it returns the undefined value.
-  Object* TryCallAsFunction(Object* object);
+  // Returns a JSFunction if the object can be called as a function, and
+  // patches the stack to be ready for the call.  Otherwise, it returns the
+  // undefined value.
+  Handle<Object> TryCallAsFunction(Handle<Object> object);
 
   void ReceiverToObjectIfRequired(Handle<Object> callee, Handle<Object> object);
 
   static void Clear(Address address, Code* target);
 
   friend class IC;
 };
 
 
 class CallIC: public CallICBase {
@@ skipping 488 matching lines @@
   void patch(Code* code);
 };
 
 
 // Helper for BinaryOpIC and CompareIC.
 void PatchInlinedSmiCode(Address address);
 
 } }  // namespace v8::internal
 
 #endif  // V8_IC_H_