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PR-URL: https://github.com/nodejs/node/pull/28918 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com>
25 lines
707 B
JavaScript
25 lines
707 B
JavaScript
// Copyright 2014 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 push_wrapper(array, value) {
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array.push(value);
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}
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%PrepareFunctionForOptimization(push_wrapper);
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// Test that optimization of Array.push() for non-Arrays works correctly.
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var object = { x : 8, length: 3 };
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object[18] = 5;
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object.__proto__ = Array.prototype;
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push_wrapper(object, 1);
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push_wrapper(object, 1);
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assertEquals(5, object.length);
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%OptimizeFunctionOnNextCall(push_wrapper);
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push_wrapper(object, 1);
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push_wrapper(object, 1);
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assertEquals(8, object.x);
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assertEquals(7, object.length);
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