Migrated several tests from blink to V8 repository.

test/webkit/dfg-rshift-by-zero-eliminate-valuetoint32.js

Index: test/webkit/dfg-rshift-by-zero-eliminate-valuetoint32.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/dfg-rshift-by-zero-eliminate-valuetoint32.js
similarity index 84%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/dfg-rshift-by-zero-eliminate-valuetoint32.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..715dfa3757a685bee439268da705a9bd8636d288 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/dfg-rshift-by-zero-eliminate-valuetoint32.js
@@ -22,10 +22,17 @@
 // 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 right shifting by zero and then doing other bitops doesn't eliminate the ValueToInt32 node."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+global = 32;
 
+function f() {
+    var Ha, fa;
+    Ha = global >> 0;
+    fa = Ha & 2;
+    global = Ha & 2;
+}
 
+for (var i = 0; i < 1000; ++i)
+    shouldBe("f()", "undefined");