Fix bogus allocation limit in allocation folding.

test/mjsunit/allocation-folding.js

 // Copyright 2013 the V8 project authors. All rights reserved.
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 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
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 //       copyright notice, this list of conditions and the following
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@@ skipping 82 matching lines @@
 
 branch_int(1); branch_int(1); branch_int(1);
 %OptimizeFunctionOnNextCall(branch_int);
 result = branch_int(1);
 var result2 = branch_int(0);
 
 gc();
 
 assertEquals(result[1], 4);
 assertEquals(result2[1], 6);
+
+// Test to exceed the Heap::MaxRegularSpaceAllocationSize limit but not
+// the Page::kMaxNonCodeHeapObjectSize limit with allocation folding.
+
+function boom() {
+  var a1 = new Array(84632);
+  var a2 = new Array(84632);
+  var a3 = new Array(84632);
+  return [ a1, a2, a3 ];
+}
+
+boom(); boom(); boom();
+%OptimizeFunctionOnNextCall(boom);
+boom();