test/nashorn/script/basic/es6/JDK-8059835.js

/*
 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 * 
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 * 
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 * 
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/**
 * JDK-8059835: Optimistic splitting doesn't work with let and const
 *
 * @test
 * @run
 * @option --language=es6
 * @option -Dnashorn.compiler.splitter.threshold=100
 * @fork
 */

function f() {
    let sum = 0;
    const c = 13;
    if (true) {
        let x = 0;
        const y = 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        sum += x;
        sum += y;
    }
    outer: while (true) {
        let x = 0;
        const y = 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        sum += x;
        sum += y;
        sum += c;
        let i = 0;
        const k = 1;
        while (true) {
            x += k;
            if (++i === 10) {
                break outer;
            }
        }
        x += k;
    }
    return sum;
}

function g() {
    let sum = 0;
    const c = 13;
    if (true) {
        let x = 0;
        const y = 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        sum += x;
        sum += y;
    }
    outer: while (true) {
        let x = 0;
        const y = 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        x += 1;
        sum += x;
        sum += y;
        sum += c;
        let i = 0;
        const k = 1;
        while (true) {
            x += k;
            if (++i === 10) return 'abc';
        }
        x += k;
    }
    return sum;
}

Assert.assertTrue(f() === 80);
Assert.assertTrue(g() === 'abc');