e3e8ea5d65
To be consistent with the all the other tiers and avoid confusion, we rename --opt to ---turbofan, and --always-opt to --always-turbofan. Change-Id: Ie23dc8282b3fb4cf2fbf73b6c3d5264de5d09718 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3610431 Reviewed-by: Leszek Swirski <leszeks@chromium.org> Commit-Queue: Camillo Bruni <cbruni@chromium.org> Reviewed-by: Jakob Linke <jgruber@chromium.org> Cr-Commit-Position: refs/heads/main@{#80336}
63 lines
1.6 KiB
JavaScript
63 lines
1.6 KiB
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 --turbofan
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// Test the extreme case where -0 is produced by rounding errors.
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(function() {
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function bar(x) {
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return 1e-308 * x;
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}
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bar(1);
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function foo() {
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return Object.is(-0, bar(-1e-308));
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}
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%PrepareFunctionForOptimization(foo);
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assertTrue(foo());
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assertTrue(foo());
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%OptimizeFunctionOnNextCall(foo);
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assertTrue(foo());
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})();
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// Test that multiplication of integer by 0 produces the correct results.
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(function() {
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function foo(x) {
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return 0 * Math.round(x);
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}
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%PrepareFunctionForOptimization(foo);
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assertEquals(0, foo(0.1));
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assertEquals(-0, foo(-0.1));
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assertEquals(NaN, foo(NaN));
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assertEquals(NaN, foo(Infinity));
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assertEquals(NaN, foo(-Infinity));
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(0, foo(0.1));
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assertEquals(-0, foo(-0.1));
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assertEquals(NaN, foo(NaN));
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assertEquals(NaN, foo(Infinity));
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assertEquals(NaN, foo(-Infinity));
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})();
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// Test that multiplication properly preserves -0 and NaN, and doesn't
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// cut it short incorrectly.
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(function() {
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function foo(x, y) {
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x = Math.sign(x);
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y = Math.sign(y);
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return Math.min(x * y, 0);
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}
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%PrepareFunctionForOptimization(foo);
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assertEquals(0, foo(1, 0));
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assertEquals(-0, foo(1, -0));
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assertEquals(NaN, foo(NaN, -0));
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(0, foo(1, 0));
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assertEquals(-0, foo(1, -0));
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assertEquals(NaN, foo(NaN, -0));
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})();
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