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PR-URL: https://github.com/nodejs/node/pull/44741 Fixes: https://github.com/nodejs/node/issues/44650 Fixes: https://github.com/nodejs/node/issues/37472 Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
33 lines
656 B
JavaScript
33 lines
656 B
JavaScript
// 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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//
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// Flags: --allow-natives-syntax --turbofan --no-always-turbofan
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// Flags: --no-stress-flush-code
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let arr = [1, 2, 3];
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function f(useArrayIndex) {
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let index = useArrayIndex ? '1': '4294967296';
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return arr[index];
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}
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%PrepareFunctionForOptimization(f);
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f(true);
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f(true);
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%OptimizeFunctionOnNextCall(f);
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f(false);
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assertUnoptimized(f);
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%PrepareFunctionForOptimization(f);
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f(true);
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f(true);
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%OptimizeFunctionOnNextCall(f);
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f(true);
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// no deopt here
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f(false);
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assertOptimized(f);
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