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Kmake/deps/v8/test/mjsunit/compiler/regress-store-store-elim.js

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2026-05-26 23:36:42 -07:00
// Copyright 2021 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 --verify-heap --turbo-store-elimination
// Check that transitioning stores are not eliminated.
let obj = { a: 42 }
function foo() {
// Force GC on the next allocation to trigger heap verification.
%SimulateNewspaceFull();
// Transitioning store. Must not be eliminated.
this.f = obj;
this.f = {
a: 43
};
}
%PrepareFunctionForOptimization(foo);
var a;
a = new foo();
a = new foo();
%OptimizeFunctionOnNextCall(foo);
a = new foo();
assertEquals(43, a.f.a);