v8/test/mjsunit/check-bounds-array-index.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 2019 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 --turbofan --no-always-turbofan
// Flags: --no-stress-flush-code
let arr = [1, 2, 3];
function f(useArrayIndex) {
let index = useArrayIndex ? '1': '4294967296';
return arr[index];
}
%PrepareFunctionForOptimization(f);
f(true);
f(true);
%OptimizeFunctionOnNextCall(f);
f(false);
assertUnoptimized(f);
%PrepareFunctionForOptimization(f);
f(true);
f(true);
%OptimizeFunctionOnNextCall(f);
f(true);
// no deopt here
f(false);
assertOptimized(f);