Upload Kmake

deps/v8/test/mjsunit/compiler/deopt-lazy-freeze.js

@@ -0,0 +1,29 @@
+// Copyright 2017 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 b = false;
+var obj = {f: 1, g: 2};
+
+function setMutability() {
+  if (b) Object.freeze(obj);
+}
+%NeverOptimizeFunction(setMutability);
+
+function setAndUseObject() {
+  setMutability(obj);
+  if (!Object.isFrozen(obj)) {
+    var t = obj.f;
+    obj.f = t * 2;
+  }
+  return obj.f;
+}
+
+%PrepareFunctionForOptimization(setAndUseObject);
+assertEquals(setAndUseObject(), 2);
+assertEquals(setAndUseObject(), 4);
+%OptimizeFunctionOnNextCall(setAndUseObject);
+b = true;
+assertEquals(setAndUseObject(), 4);