/* * Copyright (c) 2023, 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 8299959 * @summary In CmpU::Value, the sub computation may be narrower than the overflow computation. * @requires vm.compiler2.enabled * * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+StressCCP -Xcomp -XX:-TieredCompilation * -XX:CompileCommand=compileonly,compiler.rangechecks.TestRangeCheckCmpUOverflowVsSub::test * -XX:RepeatCompilation=50 * compiler.rangechecks.TestRangeCheckCmpUOverflowVsSub */ package compiler.rangechecks; public class TestRangeCheckCmpUOverflowVsSub { static int arr[] = new int[400]; public static void main(String[] strArr) { for (int i = 0; i < 10; i++) { test(); // repeat for multiple compilations } } static void test() { for(int i = 0; i < 50_000; i++) {} //empty loop - trigger OSR faster int val; int zero = arr[5]; int i = 1; do { for (int j = 1; j < 3; j++) { for (int k = 2; k > i; k -= 3) { try { val = arr[i + 1] % k; val = arr[i - 1] % zero; val = arr[k - 1]; } catch (ArithmeticException e) {} // catch div by zero } } } while (++i < 3); } }