/* * Copyright (c) 2019, 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 8202952 * @summary C2: Unexpected dead nodes after matching * * @run main/othervm -XX:-TieredCompilation -Xcomp -XX:CompileOnly=::test * compiler.c2.TestMatcherLargeOffset */ package compiler.c2; public class TestMatcherLargeOffset { public static final int N = 400; public static int iArrFld[] = new int[N]; public static void m(int i4) { i4 |= -104; iArrFld[(i4 >>> 1) % N] >>= i4; } public static void test() { int i2 = 1, i24 = 65; for (int i1 = 7; i1 < 384; ++i1) { for (long l = 2; l < 67; l++) { m(i2); for (i24 = 1; 2 > i24; ++i24) { iArrFld = iArrFld; } } i2 = (-229 / i24); } } public static void main(String[] strArr) { for (int i = 0; i < 5; i++ ) { test(); } } }