36 lines
1.1 KiB
JavaScript
36 lines
1.1 KiB
JavaScript
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// Copyright 2024 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-always-turbofan
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function add(a, b) {
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return a + b;
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}
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%PrepareFunctionForOptimization(add);
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const string = 'first';
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const stringWrapper = new String('second');
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assertEquals('firstsecond', add(string, stringWrapper));
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%OptimizeMaglevOnNextCall(add);
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assertEquals('firstsecond', add(string, stringWrapper));
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assertTrue(isMaglevved(add));
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// Also passing the params the other way around is supported (both params are
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// of type "string or string wrapper").
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assertEquals('secondfirst', add(stringWrapper, string));
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assertTrue(isMaglevved(add));
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assertEquals('firstfirst', add(string, string));
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assertTrue(isMaglevved(add));
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assertEquals('secondsecond', add(stringWrapper, stringWrapper));
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assertTrue(isMaglevved(add));
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// Pass a JSPrimitiveWrapper which is not a string wrapper.
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assertEquals('first123', add(string, new Number(123)));
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assertUnoptimized(add);
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