Implement tracking and optimizations of packed arrays

test/mjsunit/elements-transition-hoisting.js

 // Copyright 2011 the V8 project authors. All rights reserved.

[Jakob Kummerow, 2012/05/13 21:55:27]

nit: 2012

[danno, 2012/05/22 11:05:21]

Done.

 // 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 12 matching lines @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // Flags: --allow-natives-syntax --smi-only-arrays --expose-gc
 
 // Ensure that ElementsKind transitions in various situations are hoisted (or
 // not hoisted) correctly, don't change the semantics programs and don't trigger
 // deopt through hoisting in important situations.
 
-support_smi_only_arrays = %HasFastSmiOnlyElements(new Array(1,2,3,4,5,6));
+support_smi_only_arrays = %HasFastSmiElements(new Array(1,2,3,4,5,6));
 
 if (support_smi_only_arrays) {
   print("Tests include smi-only arrays.");
 } else {
   print("Tests do NOT include smi-only arrays.");
 }
 
 // Force existing ICs from previous stress runs to be flushed, otherwise the
 // assumptions in this test about when deoptimizations get triggered are not
 // valid.
@@ skipping 157 matching lines @@
   testStraightLineDupeElinination(new Array(5),.5,0,0,0,0);
   testStraightLineDupeElinination(new Array(5),0,.5,0,0,0);
   testStraightLineDupeElinination(new Array(5),0,0,.5,0,0);
   testStraightLineDupeElinination(new Array(5),0,0,0,.5,0);
   testStraightLineDupeElinination(new Array(5),0,0,0,0,.5);
   %OptimizeFunctionOnNextCall(testStraightLineDupeElinination);
   testStraightLineDupeElinination(new Array(5));
   testStraightLineDupeElinination(new Array(5));
   assertTrue(2 != %GetOptimizationStatus(testStraightLineDupeElinination));
 }