5ab3140dfb
PR-URL: https://github.com/nodejs/node/pull/54536 Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com> Reviewed-By: Richard Lau <rlau@redhat.com>
44 lines
909 B
JavaScript
44 lines
909 B
JavaScript
// Copyright 2024 the V8 project authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
//
|
|
// Flags: --allow-natives-syntax --maglev
|
|
|
|
function addProperties(o) {
|
|
// Add enough properties to exhaust the slack, so that adding the property
|
|
// in `foo` will need to grow the property backing store.
|
|
o.a1 = 1;
|
|
o.a2 = 2;
|
|
o.a3 = 3;
|
|
o.a4 = 4;
|
|
o.a5 = 5;
|
|
o.a6 = 6;
|
|
o.a7 = 7;
|
|
}
|
|
|
|
const s = new Set();
|
|
|
|
function foo(o) {
|
|
o.b = 2;
|
|
}
|
|
%PrepareFunctionForOptimization(foo);
|
|
|
|
let o1 = {};
|
|
addProperties(o1);
|
|
|
|
// Make the StoreIC in `foo` polymorphic.
|
|
foo(o1);
|
|
foo({a: 0, b: 2});
|
|
|
|
%OptimizeMaglevOnNextCall(foo);
|
|
foo({a: 1, b: 3});
|
|
|
|
let o2 = {};
|
|
addProperties(o2);
|
|
s.add(o2); // Force creating the hash.
|
|
|
|
foo(o2);
|
|
// Assert that the hash value was preseved when extending the properties
|
|
// backing store.
|
|
assertTrue(s.has(o2));
|