6904a8120b
.. mostly mentions in mjsunit `Flags:` lines and in comments. Bug: v8:10386 Change-Id: If79dfdc448d0a3f19883ef1f816e77e750cb4061 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3865964 Commit-Queue: Jakob Linke <jgruber@chromium.org> Reviewed-by: Michael Achenbach <machenbach@chromium.org> Reviewed-by: Leszek Swirski <leszeks@chromium.org> Cr-Commit-Position: refs/heads/main@{#82852}
42 lines
999 B
JavaScript
42 lines
999 B
JavaScript
// Copyright 2022 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 --maglev
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// Checks Smi add operation and deopt while untagging.
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(function() {
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function add(x, y) {
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return x + y;
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}
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%PrepareFunctionForOptimization(add);
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assertEquals(3, add(1, 2));
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%OptimizeMaglevOnNextCall(add);
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assertEquals(3, add(1, 2));
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assertTrue(isMaglevved(add));
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// We should deopt here in SmiUntag.
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assertEquals(0x40000000, add(1, 0x3FFFFFFF));
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assertFalse(isMaglevved(add));
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})();
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// Checks when we deopt due to tagging.
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(function() {
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function add(x, y) {
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return x + y;
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}
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%PrepareFunctionForOptimization(add);
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assertEquals(3, add(1, 2));
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%OptimizeMaglevOnNextCall(add);
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assertEquals(3, add(1, 2));
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assertTrue(isMaglevved(add));
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// We should deopt here in SmiTag.
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assertEquals(3.2, add(1.2, 2));
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assertFalse(isMaglevved(add));
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})();
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