Migrated several tests from blink to V8 repository.

test/webkit/dfg-post-inc-then-exit.js

Index: test/webkit/dfg-post-inc-then-exit.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/dfg-post-inc-then-exit.js
similarity index 86%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/dfg-post-inc-then-exit.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..ddcc3e41344500b53a85d870cbcb173a59e87eea 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/dfg-post-inc-then-exit.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 what happens if you post-inc and then OSR exit."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
-
+function foo(o, i) {
+    o.f.f = i++;
+}
 
+for (var i = 0; i < 100; ++i) {
+    var o = {};
+    if (i == 99)
+        o.f = 42;
+    foo({f:o}, 0);
+    shouldBe("o.f", "0");
+}