42 lines
1015 B
JavaScript
42 lines
1015 B
JavaScript
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// 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 --no-stress-opt
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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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