a79dde2bce
Our previous assumption that the receiver is immutable is incorrect in constructors. Change the current logic (which never generates an exception phi for receivers, but instead re-uses the parameter slot) into forcing the receiver exception phi to be allocated (and spilled) in the receiver parameter slot. Bug: v8:7700 Change-Id: I1ba92b2e711dc0fcd7c818526b9c199cadcdd3bf Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3948586 Reviewed-by: Victor Gomes <victorgomes@chromium.org> Commit-Queue: Leszek Swirski <leszeks@chromium.org> Cr-Commit-Position: refs/heads/main@{#83684}
28 lines
606 B
JavaScript
28 lines
606 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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//
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// Flags: --maglev --allow-natives-syntax
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class Base {
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constructor() {
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}
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}
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class Class extends Base {
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constructor() {
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try {
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// Super initialises the "this" pointer.
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super();
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throw new Error();
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} catch (e) {
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// Access to "this" should be valid.
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assertNotNull(this);
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}
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}
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};
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%PrepareFunctionForOptimization(Class);
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new Class();
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new Class();
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%OptimizeMaglevOnNextCall(Class);
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new Class();
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