Migrated several tests from blink to V8 repository.

test/webkit/dfg-array-pop-side-effects.js

Index: test/webkit/dfg-array-pop-side-effects.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/dfg-array-pop-side-effects.js
similarity index 62%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/dfg-array-pop-side-effects.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..8d4d5f319a57a3015a3f454a9b06a865ab25dc94 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/dfg-array-pop-side-effects.js
@@ -22,10 +22,41 @@
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 description(
-"Tests the behavior of Array.prototype.concat while the array is having a bad time due to one of the elements we are concatenating."
+"Tests that ArrayPop is known to the DFG to be a side effect."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+function foo(a, b) {
+    var result = a.f;
+    result += b.pop();
+    result += a.g;
+    return result;
+}
 
+var ouches = 0;
+for (var i = 0; i < 200; ++i) {
+    var a = {f:1, g:2};
+    var b = [];
+    var expected;
+    if (i < 150) {
+        // Ensure that we always transition the array's structure to one that indicates
+        // that we have array storage.
+        b.__defineGetter__("0", function() {
+            testFailed("Should never get here");
+        });
+        b.length = 0;
+        b[0] = 42;
+        expected = "45";
+    } else {
+        b.__defineGetter__("0", function() {
+            debug("Ouch!");
+            ouches++;
+            delete a.g;
+            a.h = 43;
+            return 5;
+        });
+        expected = "0/0";
+    }
+    shouldBe("foo(a, b)", expected);
+}
 
+shouldBe("ouches", "50");