/* * 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 8229499 * @summary Node estimate for loop unrolling is not correct/sufficient: * assert(delta <= 2 * required) failed: Bad node estimate ... * * @requires !vm.graal.enabled * * @run main/othervm -XX:-TieredCompilation -XX:-BackgroundCompilation * LoopUnrollBadNodeBudget * */ public class LoopUnrollBadNodeBudget { int a; long b; int c; int d(long e, short f, int g) { int h, j = 2, k, l[][] = new int[a][]; for (h = 8; h < 58; ++h) for (k = 1; 7 > k; ++k) switch (h % 9 * 5 + 43) { case 70: case 65: case 86: case 81: case 62: case 69: case 74: g = j; } long m = u(l); return (int)m; } void n(int p, int o) { d(b, (short)0, p); } void r(String[] q) { int i = 4; n(i, c); } long u(int[][] a) { long sum = 0; return sum; } public static void main(String[] t) { try { LoopUnrollBadNodeBudget s = new LoopUnrollBadNodeBudget(); for (int i = 5000; i > 0; i--) s.r(t); } catch (Exception ex) { } } }