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f579e11940
PR-URL: https://github.com/nodejs/node/pull/26685 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Michaël Zasso <targos@protonmail.com> Reviewed-By: Refael Ackermann <refack@gmail.com>
61 lines
2.1 KiB
JavaScript
61 lines
2.1 KiB
JavaScript
// Copyright 2016 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 test(f) {
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assertTrue(f(0));
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assertTrue(f(Number.MIN_SAFE_INTEGER));
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assertFalse(f(Number.MIN_SAFE_INTEGER - 13));
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assertTrue(f(Number.MIN_SAFE_INTEGER + 13));
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assertTrue(f(Number.MAX_SAFE_INTEGER));
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assertFalse(f(Number.MAX_SAFE_INTEGER + 23));
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assertTrue(f(Number.MAX_SAFE_INTEGER - 23));
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assertFalse(f(Number.MIN_VALUE));
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assertFalse(f(Number.MAX_VALUE));
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assertFalse(f(Number.NaN));
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assertFalse(f(Number.POSITIVE_INFINITY));
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assertFalse(f(Number.NEGATIVE_INFINITY));
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assertFalse(f(1 / 0));
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assertFalse(f(-1 / 0));
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assertFalse(f(Number.EPSILON));
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var near_upper = Math.pow(2, 52);
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assertTrue(f(near_upper));
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assertFalse(f(2 * near_upper));
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assertTrue(f(2 * near_upper - 1));
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assertTrue(f(2 * near_upper - 2));
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assertFalse(f(2 * near_upper + 1));
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assertFalse(f(2 * near_upper + 2));
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assertFalse(f(2 * near_upper + 7));
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var near_lower = -near_upper;
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assertTrue(f(near_lower));
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assertFalse(f(2 * near_lower));
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assertTrue(f(2 * near_lower + 1));
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assertTrue(f(2 * near_lower + 2));
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assertFalse(f(2 * near_lower - 1));
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assertFalse(f(2 * near_lower - 2));
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assertFalse(f(2 * near_lower - 7));
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}
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// Check that the NumberIsSafeInteger simplified operator in
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// TurboFan does the right thing.
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function NumberIsSafeInteger(x) { return Number.isSafeInteger(+x); }
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%PrepareFunctionForOptimization(NumberIsSafeInteger);
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test(NumberIsSafeInteger);
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test(NumberIsSafeInteger);
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%OptimizeFunctionOnNextCall(NumberIsSafeInteger);
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test(NumberIsSafeInteger);
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// Check that the ObjectIsSafeInteger simplified operator in
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// TurboFan does the right thing as well (i.e. when TurboFan
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// is not able to tell statically that the inputs are numbers).
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function ObjectIsSafeInteger(x) { return Number.isSafeInteger(x); }
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%PrepareFunctionForOptimization(ObjectIsSafeInteger);
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test(ObjectIsSafeInteger);
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test(ObjectIsSafeInteger);
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%OptimizeFunctionOnNextCall(ObjectIsSafeInteger);
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test(ObjectIsSafeInteger);
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