blob: 8400646ecbf9911cedc573864f96f3ca612b9f7e [file] [log] [blame]
// 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 --opt
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.reduce(g, 0);
}
%PrepareFunctionForOptimization(f);
%PrepareFunctionForOptimization(g);
assertEquals(45, f());
assertEquals(45, f());
%OptimizeFunctionOnNextCall(f);
deopt = true;
assertEquals(45, f());
assertEquals(45, f());