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9b4bf7de6c
PR-URL: https://github.com/nodejs/node/pull/23423 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Gus Caplan <me@gus.host> Reviewed-By: Myles Borins <myles.borins@gmail.com>
39 lines
1018 B
JavaScript
39 lines
1018 B
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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// Test the case where TurboFan can statically rule out -0 from the
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// Math.max type.
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(function() {
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function foo(x) {
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// Arrange x such that TurboFan infers type [-inf, inf] \/ MinusZero.
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x = +x;
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x = Math.round(x);
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return Object.is(-0, Math.max(1, x))
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}
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assertFalse(foo(-0));
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assertFalse(foo(-1));
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%OptimizeFunctionOnNextCall(foo);
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assertFalse(foo(-0));
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assertFalse(foo(-1));
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})();
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// Test the case where -0 is ruled out because it's strictly less than +0.
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(function() {
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function foo(x) {
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// Arrange x such that TurboFan infers type [-inf, inf] \/ MinusZero.
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x = +x;
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x = Math.round(x);
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return Object.is(-0, Math.max(0, x))
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}
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assertFalse(foo(-0));
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assertFalse(foo(-1));
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%OptimizeFunctionOnNextCall(foo);
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assertFalse(foo(-0));
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assertFalse(foo(-1));
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})();
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