Adds EXTERNAL_DOUBLE_ARRAY to a list of instance types

test/mjsunit/regress/regress-2646.js

Index: test/mjsunit/regress/regress-2646.js
diff --git a/test/mjsunit/regress/regress-crbug-217858.js b/test/mjsunit/regress/regress-2646.js
similarity index 86%
copy from test/mjsunit/regress/regress-crbug-217858.js
copy to test/mjsunit/regress/regress-2646.js
index 8563e07eee9e1acbcdc8c5c28c461f2d27fad6f1..c51a28060ca19b073693bb3f575b45033dd7b73c 100644
--- a/test/mjsunit/regress/regress-crbug-217858.js
+++ b/test/mjsunit/regress/regress-2646.js
@@ -25,16 +25,13 @@
 // (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
+// Flags: --heap-stats
 
-var r = /r/;
-var a = "";
-function f() {
-  %OptimizeFunctionOnNextCall(f, "osr");
-  for (var i = 0; i < 1000000; i++) {
-    a += i.toString();
-    r[r] = function() {};
-  }
-}
+var expectedItemsCount = 10000,
+    itemSize = 5,
+    heap = new ArrayBuffer(expectedItemsCount * itemSize * 8),
+    storage = [];
 
-f();
+for (var i = 0; i < expectedItemsCount; i++) {
+    storage.push(new Float64Array(heap, 0, itemSize));
+}