7772a2df9dPR-URL: https://github.com/nodejs/node/pull/59805 Reviewed-By: Filip Skokan <panva.ip@gmail.com> Reviewed-By: Richard Lau <richard.lau@ibm.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
27 lines
805 B
JavaScript
27 lines
805 B
JavaScript
// 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: --script-context-cells --allow-natives-syntax
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// Flags: --turbofan --maglev --no-stress-maglev
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// Flags: --sparkplug --no-always-sparkplug
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%RuntimeEvaluateREPL('let a = 42;');
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// read() uses LdaGlobal / StaGlobal bytecodes for accessing the top-level
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// `let` variable.
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%RuntimeEvaluateREPL('function read() { ++a; return a; }');
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%PrepareFunctionForOptimization(read);
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assertEquals(43, read());
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%OptimizeFunctionOnNextCall(read);
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assertEquals(44, read());
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assertOptimized(read);
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// `a` was not embedded as a constant to `read`, so changing it won't deopt
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// `read`.
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a = 5;
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assertOptimized(read);
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assertEquals(6, read());
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