Remove hand-written assembly ArrayPush stubs

test/mjsunit/array-push7.js

+// Copyright 2014 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.
+
+// Flags: --allow-natives-syntax
+
+var v = 0;
+
+function push_wrapper(array, value) {
+  array.push(value);
+}
+function pop_wrapper(array) {
+  return array.pop();
+}
+
+// Test that Object.observe() notification events are properly sent from
+// Array.push() and Array.pop() both from optimized and un-optimized code.
+var array = [];
+
+function somethingChanged(changes) {
+  v++;
+}
+
+Object.observe(array, somethingChanged);
+push_wrapper(array, 1);
+%RunMicrotasks();
+assertEquals(1, array.length);
+assertEquals(1, v);
+push_wrapper(array, 1);
+%RunMicrotasks();
+assertEquals(2, array.length);
+assertEquals(2, v);
+%OptimizeFunctionOnNextCall(push_wrapper);
+push_wrapper(array, 1);
+%RunMicrotasks();
+assertEquals(3, array.length);
+assertEquals(3, v);
+push_wrapper(array, 1);
+%RunMicrotasks();
+assertEquals(4, array.length);
+assertEquals(4, v);
+
+pop_wrapper(array);
+%RunMicrotasks();
+assertEquals(3, array.length);
+assertEquals(5, v);
+pop_wrapper(array);
+%RunMicrotasks();
+assertEquals(2, array.length);
+assertEquals(6, v);
+%OptimizeFunctionOnNextCall(pop_wrapper);
+pop_wrapper(array);
+%RunMicrotasks();
+assertEquals(1, array.length);
+assertEquals(7, v);
+pop_wrapper(array);
+%RunMicrotasks();
+assertEquals(0, array.length);
+assertEquals(8, v);