[stubs] Port builtin for Array.push fast-case from Crankshaft to TF

test/mjsunit/array-push13.js

+// Copyright 2016 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+function __f_17(__v_9) {
+ var __v_10 = 0;

[Jakob Kummerow, 2016/11/23 17:17:06]

nit: unused variable

[danno, 2016/11/29 14:40:00]

Done.

+  for (var count = 0; count < 20000; ++count) {
+    if (count < 100) {
+      __v_9.push(3);
+    } else if (count < 2500) {
+      __v_9.push(2.5);
+    } else {
+      __v_9.push(undefined);

[Jakob Kummerow, 2016/11/23 17:17:06]

nit: I'd push some recognizable sentinel. Maybe |true|, or some string. Don't
forget to update the expectation below.

[danno, 2016/11/29 14:40:00]

Done.

+    }
+  }
+  return __v_9;
+}
+
+let a = __f_17([]);
+assertEquals(a[0], 3);
+assertEquals(a[10], 3);
+assertEquals(a[2499], 2.5);
+assertEquals(a[10000], undefined);