v8/test/mjsunit/regress/regress-unlink-closures-on-deopt.js
Camillo Bruni e3e8ea5d65 [flags] Rename --opt to --turbofan
To be consistent with the all the other tiers and avoid confusion, we
rename --opt to ---turbofan, and --always-opt to --always-turbofan.

Change-Id: Ie23dc8282b3fb4cf2fbf73b6c3d5264de5d09718
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3610431
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Jakob Linke <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80336}
2022-05-03 12:10:30 +00:00

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JavaScript

// Copyright 2017 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 --noalways-turbofan
function foo() {
function g(o) {
return o.f;
}
return g;
}
let g1 = foo();
let g2 = foo();
%PrepareFunctionForOptimization(g1);
g1({ f : 1});
g1({ f : 2});
g2({ f : 2});
g2({ f : 2});
%OptimizeFunctionOnNextCall(g1);
g1({ f : 1});
%PrepareFunctionForOptimization(g2);
%OptimizeFunctionOnNextCall(g2);
g2({ f : 2});
g1({});
assertUnoptimized(g1);
// Deoptimization of g1 should also deoptimize g2 because they should share
// the optimized code object. (Unfortunately, this test bakes in various
// other assumptions about dealing with optimized code, and thus might break
// in future.)
assertUnoptimized(g2);
g2({});