mirror of https://github.com/tc39/test262.git
18 lines
520 B
JavaScript
18 lines
520 B
JavaScript
// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax --opt
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function foo(o) { return o.x; }
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assertEquals(undefined, foo({}));
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assertEquals(undefined, foo(1));
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assertEquals(undefined, foo({}));
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assertEquals(undefined, foo(1));
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(undefined, foo({}));
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assertOptimized(foo);
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assertEquals(undefined, foo(1));
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assertOptimized(foo);
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