Use ast_id (id) instead of return_id (LoadId) in simulates for load instructions.

src/hydrogen.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 1893 matching lines @@
   bool TryInline(CallKind call_kind,
                  Handle<JSFunction> target,
                  int arguments_count,
                  HValue* implicit_return_value,
                  BailoutId ast_id,
                  BailoutId return_id,
                  InliningKind inlining_kind);
 
   bool TryInlineCall(Call* expr, bool drop_extra = false);
   bool TryInlineConstruct(CallNew* expr, HValue* implicit_return_value);
-  bool TryInlineGetter(Handle<JSFunction> getter, BailoutId return_id);
+  bool TryInlineGetter(Handle<JSFunction> getter,
+                       BailoutId ast_id,
+                       BailoutId return_id);
   bool TryInlineSetter(Handle<JSFunction> setter,
                        BailoutId id,
                        BailoutId assignment_id,
                        HValue* implicit_return_value);
   bool TryInlineApply(Handle<JSFunction> function,
                       Call* expr,
                       int arguments_count);
   bool TryInlineBuiltinMethodCall(Call* expr,
                                   HValue* receiver,
                                   Handle<Map> receiver_map,
@@ skipping 101 matching lines @@
                                 Handle<JSFunction> getter,
                                 Handle<JSObject> holder);
   HInstruction* BuildLoadNamedMonomorphic(HValue* object,
                                           Handle<String> name,
                                           Handle<Map> map);
 
   HCheckMaps* AddCheckMap(HValue* object, Handle<Map> map);
 
   void BuildLoad(Property* property,
                  int position,
-                 BailoutId ast_id,
-                 BailoutId return_id);
+                 BailoutId ast_id);
   void PushLoad(Property* property,
                 HValue* object,
-                int position,
-                BailoutId ast_id,
-                BailoutId return_id);
+                int position);
 
   void BuildStoreNamed(Expression* expression,
                        BailoutId id,
                        int position,
                        BailoutId assignment_id,
                        Property* prop,
                        HValue* object,
                        HValue* value);
 
   HInstruction* BuildStoreNamedField(HValue* object,
@@ skipping 238 matching lines @@
   }
 
  private:
   HGraphBuilder* builder_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_H_