/* * Copyright (c) 2025, 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. */ /* * @test * @bug 8350576 * @summary Optimization bails out and hits an assert: * assert(false) failed: reduction has ctrl or bad vector_input * @run main/othervm -Xbatch -XX:-TieredCompilation * -XX:CompileCommand=compileonly,compiler.loopopts.LoopReductionHasControlOrBadInput::* * compiler.loopopts.LoopReductionHasControlOrBadInput * @run main compiler.loopopts.LoopReductionHasControlOrBadInput * */ package compiler.loopopts; public class LoopReductionHasControlOrBadInput { static long lFld; static long lArr[] = new long[400]; static void test() { int i = 1; do { long x = -1; lArr[i] = i; lFld += i | x; } while (++i < 355); } public static void main(String[] strArr) { for (int i = 0; i < 100; i++) { test(); } } }