Upload Kmake

deps/v8/test/mjsunit/regress/regress-v8-9233.js

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+// Copyright 2019 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
+
+let o1 = { x: 999 };
+o1.y = 999;
+
+// o2 will share map with o1 in its initial state
+var o2 = { x: 1 };
+
+function f() {
+  return o2.x;
+};
+%PrepareFunctionForOptimization(f);
+assertEquals(1, f());
+assertEquals(1, f());
+%OptimizeFunctionOnNextCall(f);
+assertEquals(1, f());
+
+delete o2.x;
+o2.x = 2;
+assertEquals(2, f());