40 lines
723 B
JavaScript
40 lines
723 B
JavaScript
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// Copyright 2019 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
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function f() {
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const o = {};
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// The order of the following operations is significant
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o.a = 0;
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o[1024] = 1; // An offset of >=1024 is required
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delete o.a;
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o.b = 2;
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return o.b;
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}
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%PrepareFunctionForOptimization(f);
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f();
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f();
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%OptimizeFunctionOnNextCall(f);
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f();
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function g(o) {
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o.b = 2;
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}
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function h() {
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const o = {};
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o.a = 0;
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o[1024] = 1;
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delete o.a;
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g(o);
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assertEquals(o.b, 2);
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}
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%NeverOptimizeFunction(g);
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%PrepareFunctionForOptimization(h);
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h();
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h();
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%OptimizeFunctionOnNextCall(h);
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h();
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