/* * Copyright (c) 2023, 2024, 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 8313672 * @summary Test CCP notification for value update of AndL through LShiftI and * ConvI2L. * @run main/othervm -XX:+UnlockDiagnosticVMOptions * -XX:RepeatCompilation=20 -XX:-TieredCompilation * -XX:+StressIGVN -Xcomp * -XX:CompileCommand=compileonly,compiler.ccp.TestShiftConvertAndNotification::test * compiler.ccp.TestShiftConvertAndNotification */ /* * @test * @bug 8313672 * @summary Test CCP notification for value update of AndL through LShiftI and * ConvI2L (no flags). * @run main compiler.ccp.TestShiftConvertAndNotification * */ package compiler.ccp; public class TestShiftConvertAndNotification { static long instanceCount; static void test() { int i, i1 = 7; for (i = 7; i < 45; i++) { instanceCount = i; instanceCount &= i1 * i << i * Math.max(instanceCount, instanceCount); switch (i % 2) { case 8: i1 = 0; } } } public static void main(String[] strArr) { for (int i = 0; i < 20_000; i++) test(); } }