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f226350fcb
PR-URL: https://github.com/nodejs/node/pull/47251 Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Richard Lau <rlau@redhat.com>
81 lines
1.3 KiB
JavaScript
81 lines
1.3 KiB
JavaScript
// Copyright 2018 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 f1() {
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const x = [,];
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x[1] = 42;
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assertEquals([, 42], x);
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}
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%PrepareFunctionForOptimization(f1);
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f1();
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f1();
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%OptimizeFunctionOnNextCall(f1);
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f1();
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f1();
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function f2() {
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const x = [0];
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for (const y of [1, 2, 3, 4]) {
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x[x.length] = y;
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}
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assertEquals([0, 1, 2, 3, 4], x);
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}
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%PrepareFunctionForOptimization(f2);
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f2();
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f2();
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%OptimizeFunctionOnNextCall(f2);
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f2();
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f2();
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function f3() {
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const x = [0];
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for (const y of [1.1, {}]) {
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x[x.length] = y;
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}
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assertEquals([0, 1.1, {}], x);
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}
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%PrepareFunctionForOptimization(f3);
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f3();
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f3();
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%OptimizeFunctionOnNextCall(f3);
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f3();
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f3();
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function f4(x) {
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x[x.length] = x.length;
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}
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%PrepareFunctionForOptimization(f4);
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let x1 = [];
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f4(x1);
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assertEquals([0], x1);
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f4(x1);
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assertEquals([0, 1], x1);
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%OptimizeFunctionOnNextCall(f4);
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f4(x1);
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assertEquals([0, 1, 2], x1);
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f4(x1);
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assertEquals([0, 1, 2, 3], x1);
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%PrepareFunctionForOptimization(f4);
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let x2 = {length: 42};
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f4(x2);
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assertEquals(42, x2[42]);
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f4(x2);
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assertEquals(42, x2[42]);
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%OptimizeFunctionOnNextCall(f4);
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f4(x2);
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assertEquals(42, x2[42]);
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f4(x2);
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assertEquals(42, x2[42]);
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