Migrated several tests from blink to V8 repository.

test/webkit/dfg-inline-early-return.js

Index: test/webkit/dfg-inline-early-return.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/dfg-inline-early-return.js
similarity index 81%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/dfg-inline-early-return.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..986a7ec7a5087a6710b22315ca00263917a5ca05 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/dfg-inline-early-return.js
@@ -22,10 +22,23 @@
 // 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."
+"This tests that an early return in the first basic block does not crash the DFG's bytecode parser whilst inlining."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+function foo(a) {
+    {
+        return a;
+    }
+}
 
+function bar(a) {
+    return foo(a);
+}
 
+for (var i = 0; i < 100; ++i)
+    bar(i);
+
+shouldBe("foo(42)", "42");
+shouldBe("bar(42)", "42");
+
+var successfullyParsed = true;