6bd756d7c6
PR-URL: https://github.com/nodejs/node/pull/44741 Fixes: https://github.com/nodejs/node/issues/44650 Fixes: https://github.com/nodejs/node/issues/37472 Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
32 lines
704 B
JavaScript
32 lines
704 B
JavaScript
// Copyright 2020 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
|
|
|
|
const xs = [1,2,3,4,5,6,7,8,9];
|
|
let deopt = false;
|
|
|
|
function g(acc, x, i) {
|
|
if (deopt) {
|
|
assertFalse(%IsBeingInterpreted());
|
|
Array.prototype.x = 42; // Trigger a lazy deopt.
|
|
deopt = false;
|
|
}
|
|
return acc + x;
|
|
}
|
|
|
|
function f() {
|
|
return xs.reduceRight(g, 0);
|
|
}
|
|
|
|
%PrepareFunctionForOptimization(f);
|
|
%PrepareFunctionForOptimization(g);
|
|
assertEquals(45, f());
|
|
assertEquals(45, f());
|
|
%OptimizeFunctionOnNextCall(f);
|
|
|
|
deopt = true;
|
|
assertEquals(45, f());
|
|
assertEquals(45, f());
|