Implement tracking and optimizations of packed arrays

test/mjsunit/unbox-double-arrays.js

-// 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:
 //
 //     * 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
 //       with the distribution.
@@ skipping 357 matching lines @@
 assertEquals(large_array_size+10002, large_array.length);
 
 // Test dictionary -> double elements -> fast elements.
 var large_array2 = new Array(large_array_size);
 force_to_fast_double_array(large_array2);
 delete large_array2[5];
 
 // Convert back to fast elements and make sure the contents of the array are
 // unchanged.
 large_array2[25] = new Object();
-assertTrue(%HasFastElements(large_array2));
+assertTrue(%HasFastObjectElements(large_array2));
 for (var i= 0; i < approx_dict_to_elements_threshold; i += 500 ) {
   if (i != 25 && i != 5) {
     assertEquals(expected_array_value(i), large_array2[i]);
   }
 }
 assertEquals(undefined, large_array2[5]);
 assertEquals(undefined, large_array2[large_array_size-1]);
 assertEquals(undefined, large_array2[-1]);
 assertEquals(large_array_size, large_array2.length);
 
@@ skipping 147 matching lines @@
   assertEquals(expected_array_value(2), large_array4[2]);
 }
 
 test_setter();
 test_setter();
 test_setter();
 %OptimizeFunctionOnNextCall(test_setter);
 test_setter();
 test_setter();
 test_setter();