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PR-URL: https://github.com/nodejs/node/pull/44741 Fixes: https://github.com/nodejs/node/issues/44650 Fixes: https://github.com/nodejs/node/issues/37472 Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
30 lines
860 B
JavaScript
30 lines
860 B
JavaScript
// Copyright 2020 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 --no-always-turbofan
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// This test does not work well if we flush the feedback vector, which causes
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// deoptimization.
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// Flags: --no-stress-flush-code --no-flush-bytecode
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function foo(a, b) {
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return a - b;
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}
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%PrepareFunctionForOptimization(foo);
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assertEquals(-1n, foo(1n, 2n));
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(1n, foo(2n, 1n));
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assertOptimized(foo);
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assertThrows(() => foo(2n, undefined));
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if (%Is64Bit()) {
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assertUnoptimized(foo);
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}
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%PrepareFunctionForOptimization(foo);
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(-1n, foo(1n, 2n));
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assertOptimized(foo);
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assertThrows(() => foo(undefined, 2n));
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assertOptimized(foo);
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