Store fast property index in stubs generated for interceptor loads

src/objects-inl.h

 // Copyright 2006-2008 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 2536 matching lines @@
 PropertyAttributes JSObject::GetPropertyAttribute(String* key) {
   return GetPropertyAttributeWithReceiver(this, key);
 }
 
 
 bool JSObject::HasElement(uint32_t index) {
   return HasElementWithReceiver(this, index);
 }
 
 
+Smi* JSObject::InterceptorPropertyLookupHint(String* name) {
+  // TODO(antonm): do we want to do any shortcuts for global object?

[Kasper Lund, 2009/06/02 18:27:16]

do -> Do

+  if (HasFastProperties()) {
+    LookupResult lookup;
+    LocalLookupRealNamedProperty(name, &lookup);
+    if (lookup.IsValid()) {
+      if (lookup.type() == FIELD && lookup.IsCacheable()) {
+        return Smi::FromInt(lookup.GetFieldIndex());
+      }
+    } else {
+      return Smi::FromInt(kLookupInPrototype);
+    }
+  }
+
+  return Smi::FromInt(kLookupInHolder);
+}
+
+
 bool AccessorInfo::all_can_read() {
   return BooleanBit::get(flag(), kAllCanReadBit);
 }
 
 
 void AccessorInfo::set_all_can_read(bool value) {
   set_flag(BooleanBit::set(flag(), kAllCanReadBit, value));
 }
 
 
@@ skipping 79 matching lines @@
 #undef WRITE_INT_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_