Migrated several tests from blink to V8 repository.

test/webkit/dfg-arguments-osr-exit-multiple-blocks-before-exit.js

Index: test/webkit/dfg-arguments-osr-exit-multiple-blocks-before-exit.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/dfg-arguments-osr-exit-multiple-blocks-before-exit.js
similarity index 66%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/dfg-arguments-osr-exit-multiple-blocks-before-exit.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..8acf9c32fec7703ef759a5b57db3fc7ba4daf008 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/dfg-arguments-osr-exit-multiple-blocks-before-exit.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 aliased uses of 'arguments' that require reification of the Arguments object on OSR exit, in the case that there is some interesting control flow prior to the exit."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+function baz() {
+    return [variable];
+}
 
+var someThing = 0;
 
+function foo() {
+    var result = 0;
+    var a = arguments;
+    for (var i = 0; i < a.length; ++i) {
+        // Just some dummy control flow.
+        if (someThing < 0)
+            throw "Error";
+
+        result += a[i];
+        result += baz()[0];
+    }
+    return result;
+}
+
+function bar(x) {
+    return foo(x);
+}
+
+var variable = 32;
+var expected = "74";
+
+for (var i = 0; i < 200; ++i) {
+    if (i == 150) {
+        variable = "32";
+        expected = "\"4232\"";
+    }
+
+    shouldBe("bar(42)", expected);
+}