Allow property indexes to refer to slots inside the object header.

src/ic.cc

 // 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 628 matching lines @@
 
 Handle<Code> CallICBase::ComputeMonomorphicStub(LookupResult* lookup,
                                                 State state,
                                                 Code::ExtraICState extra_state,
                                                 Handle<Object> object,
                                                 Handle<String> name) {
   int argc = target()->arguments_count();
   Handle<JSObject> holder(lookup->holder());
   switch (lookup->type()) {
     case FIELD: {
-      int index = lookup->GetFieldIndex();
+      PropertyIndex index = lookup->GetFieldIndex();
       return isolate()->stub_cache()->ComputeCallField(
           argc, kind_, extra_state, name, object, holder, index);
     }
     case CONSTANT_FUNCTION: {
       // Get the constant function and compute the code stub for this
       // call; used for rewriting to monomorphic state and making sure
       // that the code stub is in the stub cache.
       Handle<JSFunction> function(lookup->GetConstantFunction());
       return isolate()->stub_cache()->ComputeCallConstant(
           argc, kind_, extra_state, name, object, holder, function);
@@ skipping 800 matching lines @@
   // current state.
   PropertyType type = lookup->type();
 
   // Compute the code stub for this store; used for rewriting to
   // monomorphic state and making sure that the code stub is in the
   // stub cache.
   Handle<JSObject> holder(lookup->holder());
   Handle<Code> code;
   switch (type) {
     case FIELD:
-      code = isolate()->stub_cache()->ComputeStoreField(name,
-                                                        receiver,
-                                                        lookup->GetFieldIndex(),
-                                                        Handle<Map>::null(),
-                                                        strict_mode);
+      code = isolate()->stub_cache()->ComputeStoreField(
+          name, receiver, lookup->GetFieldIndex().FieldIndex(),
+          Handle<Map>::null(), strict_mode);
       break;
     case NORMAL:
       if (receiver->IsGlobalObject()) {
         // The stub generated for the global object picks the value directly
         // from the property cell. So the property must be directly on the
         // global object.
         Handle<GlobalObject> global = Handle<GlobalObject>::cast(receiver);
         Handle<JSGlobalPropertyCell> cell(global->GetPropertyCell(lookup));
         code = isolate()->stub_cache()->ComputeStoreGlobal(
             name, global, cell, strict_mode);
@@ skipping 489 matching lines @@
   PropertyType type = lookup->type();
 
   // Compute the code stub for this store; used for rewriting to
   // monomorphic state and making sure that the code stub is in the
   // stub cache.
   Handle<Code> code;
 
   switch (type) {
     case FIELD:
       code = isolate()->stub_cache()->ComputeKeyedStoreField(
-          name, receiver, lookup->GetFieldIndex(),
+          name, receiver, lookup->GetFieldIndex().FieldIndex(),
           Handle<Map>::null(), strict_mode);
       break;
     case TRANSITION: {
       Handle<Map> transition(lookup->GetTransitionTarget());
       int descriptor = transition->LastAdded();
 
       DescriptorArray* target_descriptors = transition->instance_descriptors();
       PropertyDetails details = target_descriptors->GetDetails(descriptor);
 
       if (details.type() == FIELD && details.attributes() == NONE) {
@@ skipping 707 matching lines @@
 #undef ADDR
 };
 
 
 Address IC::AddressFromUtilityId(IC::UtilityId id) {
   return IC_utilities[id];
 }
 
 
 } }  // namespace v8::internal