28 lines
604 B
JavaScript
28 lines
604 B
JavaScript
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// 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 --opt --no-always-opt
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glo = 0;
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function write_glo(x) { glo = x }
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%PrepareFunctionForOptimization(write_glo);
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write_glo({});
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write_glo(1);
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assertEquals(1, glo);
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// At this point, glo has cell type Mutable.
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%OptimizeFunctionOnNextCall(write_glo);
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write_glo(0);
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assertEquals(0, glo);
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assertOptimized(write_glo);
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Object.freeze(this);
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assertUnoptimized(write_glo);
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write_glo(1);
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assertEquals(0, glo);
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