Use LookupIterator for CompileLoadInterceptor and delete Object::Lookup

src/stub-cache.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_STUB_CACHE_H_
 #define V8_STUB_CACHE_H_
 
 #include "src/allocation.h"
 #include "src/arguments.h"
 #include "src/code-stubs.h"
@@ skipping 455 matching lines @@
   Handle<Code> CompileLoadField(Handle<Name> name, FieldIndex index);
 
   Handle<Code> CompileLoadCallback(Handle<Name> name,
                                    Handle<ExecutableAccessorInfo> callback);
 
   Handle<Code> CompileLoadCallback(Handle<Name> name,
                                    const CallOptimization& call_optimization);
 
   Handle<Code> CompileLoadConstant(Handle<Name> name, int constant_index);
 
-  Handle<Code> CompileLoadInterceptor(Handle<Name> name);
+  // The LookupIterator is used to perform a lookup behind the interceptor. If
+  // the iterator points to a LookupIterator::PROPERTY, its access will be
+  // inlined.
+  Handle<Code> CompileLoadInterceptor(LookupIterator* it, Handle<Name> name);
 
   Handle<Code> CompileLoadViaGetter(Handle<Name> name,
                                     Handle<JSFunction> getter);
 
   Handle<Code> CompileLoadGlobal(Handle<PropertyCell> cell, Handle<Name> name,
                                  bool is_configurable);
 
   // Static interface
   static Handle<Code> ComputeLoadNonexistent(Handle<Name> name,
                                              Handle<HeapType> type);
@@ skipping 29 matching lines @@
 
   virtual void FrontendFooter(Handle<Name> name, Label* miss);
 
  private:
   Handle<Code> CompileLoadNonexistent(Handle<Name> name);
   void GenerateLoadConstant(Handle<Object> value);
   void GenerateLoadCallback(Register reg,
                             Handle<ExecutableAccessorInfo> callback);
   void GenerateLoadCallback(const CallOptimization& call_optimization,
                             Handle<Map> receiver_map);
-  void GenerateLoadInterceptor(Register holder_reg,
-                               LookupResult* lookup,
-                               Handle<Name> name);
-  void GenerateLoadPostInterceptor(Register reg,
-                                   Handle<Name> name,
-                                   LookupResult* lookup);
+  void GenerateLoadInterceptor(Register holder_reg);
+  void GenerateLoadInterceptorWithFollowup(LookupIterator* it,
+                                           Register holder_reg);
+  void GenerateLoadPostInterceptor(LookupIterator* it, Register reg);
 
   // Generates prototype loading code that uses the objects from the
   // context we were in when this function was called. If the context
   // has changed, a jump to miss is performed. This ties the generated
   // code to a particular context and so must not be used in cases
   // where the generated code is not allowed to have references to
   // objects from a context.
   static void GenerateDirectLoadGlobalFunctionPrototype(MacroAssembler* masm,
                                                         int index,
                                                         Register prototype,
@@ skipping 133 matching lines @@
   Handle<JSFunction> constant_function_;
   bool is_simple_api_call_;
   Handle<FunctionTemplateInfo> expected_receiver_type_;
   Handle<CallHandlerInfo> api_call_info_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_STUB_CACHE_H_