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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>
24 lines
691 B
JavaScript
24 lines
691 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 --opt
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// Test that NumberTrunc propagates kIdentifyZeros truncations.
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(function() {
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function foo(x) {
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return Math.abs(Math.trunc(x * -2));
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}
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%PrepareFunctionForOptimization(foo);
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assertEquals(2, foo(1));
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assertEquals(4, foo(2));
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(2, foo(1));
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assertEquals(4, foo(2));
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assertOptimized(foo);
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// Now `foo` should stay optimized even if `x * -2` would produce `-0`.
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assertEquals(0, foo(0));
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assertOptimized(foo);
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})();
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