Migrated several tests from blink to V8 repository.

test/webkit/dfg-side-effect-assignment-osr-exit.js

Index: test/webkit/dfg-side-effect-assignment-osr-exit.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/dfg-side-effect-assignment-osr-exit.js
similarity index 78%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/dfg-side-effect-assignment-osr-exit.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..696393fbf775d6a0b70e380f828e3444f0819f6b 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/dfg-side-effect-assignment-osr-exit.js
@@ -22,10 +22,26 @@
 // 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 we OSR exit on an assignment that was part of a side-effecting bytecode instruction."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+function foo(f) {
+    var x = f();
+    if (x)
+        return x;
+}
 
+var count = 0;
+function bar() {
+    count++;
+    return eval(baz);
+}
 
+var baz = "42";
+
+for (var i = 0; i < 500; ++i) {
+    if (i == 450)
+        baz = "\"stuff\"";
+    shouldBe("foo(bar)", baz);
+    shouldBe("count", "" + (i + 1));
+}