75 lines
2.3 KiB
Java
75 lines
2.3 KiB
Java
/*
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* Copyright (c) 2021, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8260370
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* @summary C2: LoopLimit node is not eliminated
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*
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* @run main/othervm
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* -Xcomp
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* -XX:CompileOnly=compiler.loopopts.TestLoopLimitNodeElimination::*
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* compiler.loopopts.TestLoopLimitNodeElimination
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*/
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package compiler.loopopts;
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// the test code is derived from a randomly generated test
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public class TestLoopLimitNodeElimination {
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private static class MyException extends RuntimeException { }
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private static final int ITERATIONS = 100000;
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private static final int SIZE = 400;
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private static int counter = 0;
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int[] array1 = new int[SIZE];
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void test() {
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int[] array2 = new int[SIZE];
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array1[2] = 0;
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array1 = array1;
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for (long i = 301; i > 2; i -= 2) {
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int j = 1;
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do {
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for (int k = (int) i; k < 1; k++) { }
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} while (++j < 4);
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}
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counter++;
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if (counter == ITERATIONS) {
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throw new MyException();
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}
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}
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public static void main(String[] args) {
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try {
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var test = new TestLoopLimitNodeElimination();
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while (true) {
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test.test();
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}
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} catch (MyException e) {
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// expected
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}
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}
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}
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