6bd756d7c6
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>
38 lines
840 B
JavaScript
38 lines
840 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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// This tests that we can lazy deopt with a double spilled.
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const value = 2.2;
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function test(x) {
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return x;
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}
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function g(x) {
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assertEquals(value + 1, x);
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}
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function f(b, a) {
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var x = a + 1;
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if (test(b)) { // This forces x to be spilled.
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g(x); // When we lazy deopt, we call g with the materialized
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// value from the stack.
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}
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return x + 1;
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}
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%PrepareFunctionForOptimization(f);
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assertEquals(4.2, f(false, value));
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%OptimizeMaglevOnNextCall(f);
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assertEquals(4.2, f(false, value));
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assertTrue(isMaglevved(f));
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// We should deopt here.
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assertEquals(4.2, f(true, value));
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assertFalse(isMaglevved(f));
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