Implement tracking and optimizations of packed arrays

src/jsregexp.cc

Index: src/jsregexp.cc
diff --git a/src/jsregexp.cc b/src/jsregexp.cc
index 3455abce2399b3030a172e10ce1e2eb463f43647..7df50cc22d8265e058dd5ef3efc11f8c426e087b 100644
--- a/src/jsregexp.cc
+++ b/src/jsregexp.cc
@@ -1,4 +1,4 @@
-// Copyright 2011 the V8 project authors. All rights reserved.
+// 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:
@@ -324,7 +324,7 @@ Handle<Object> RegExpImpl::AtomExec(Handle<JSRegExp> re,
                                index)));
     if (index == -1) return isolate->factory()->null_value();
   }
-  ASSERT(last_match_info->HasFastElements());
+  ASSERT(last_match_info->HasFastObjectElements());
 
   {
     NoHandleAllocation no_handles;