1 files changed, 18 insertions, 1 deletions
diff --git a/deps/v8/test/mjsunit/array-constructor-feedback.js b/deps/v8/test/mjsunit/array-constructor-feedback.js
index c2c1a1842f..4c3a28f17a 100644
--- a/deps/v8/test/mjsunit/array-constructor-feedback.js
+++ b/deps/v8/test/mjsunit/array-constructor-feedback.js
@@ -26,7 +26,6 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // Flags: --allow-natives-syntax --expose-gc
-// Flags: --noalways-opt
 
 // Test element kind of objects.
 
@@ -217,3 +216,21 @@ function assertKind(expected, obj, name_opt) {
     assertFalse(isHoley(a));
   }
 })();
+
+// Test: Make sure that crankshaft continues with feedback for large arrays.
+(function() {
+  function bar(len) { return new Array(len); }
+  var size = 100001;
+  // Perform a gc, because we are allocating a very large array and if a gc
+  // happens during the allocation we could lose our memento.
+  gc();
+  bar(size)[0] = 'string';
+  var res = bar(size);
+  assertKind(elements_kind.fast, bar(size));
+    %OptimizeFunctionOnNextCall(bar);
+  assertKind(elements_kind.fast, bar(size));
+  // But there is a limit, based on the size of the old generation, currently
+  // 22937600, but double it to prevent the test being too brittle.
+  var large_size = 22937600 * 2;
+  assertKind(elements_kind.dictionary, bar(large_size));
+})();