73 lines
2.5 KiB
Java
73 lines
2.5 KiB
Java
/*
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* Copyright (c) 2021, Alibaba Group Holding Limited. 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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/*
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* @test
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* @bug 8267239
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* @author Yi Yang
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* @summary apply RCE for % operations
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* @requires vm.compiler1.enabled
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* @library /test/lib
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* @run main/othervm -XX:TieredStopAtLevel=1 -XX:+TieredCompilation
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* -XX:CompileCommand=compileonly,*ArithmeticRemRCE.test*
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* compiler.c1.ArithmeticRemRCE
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*/
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package compiler.c1;
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import jdk.test.lib.Asserts;
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public class ArithmeticRemRCE {
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static int field = 1000;
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static void test1() {
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// seq should be loop invariant, so we can not put it into static fields
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int[] seq = new int[1000];
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for (int i = 0; i < seq.length; i++) {
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seq[i] = i;
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}
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for (int i = 0; i < 1024; i++) {
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int constVal = 10;
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Asserts.assertTrue(0 <= seq[i % 5] && seq[i % 5] <= 4);
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Asserts.assertTrue(0 <= seq[i % -5] && seq[i % -5] <= 4);
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Asserts.assertTrue(0 <= seq[i % constVal] && seq[i % constVal] <= 9);
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Asserts.assertTrue(0 <= seq[i % -constVal] && seq[i % -constVal] <= 9);
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Asserts.assertTrue(seq[i % 1] == 0);
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// will not apply RCE
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Asserts.assertTrue(0 <= seq[i % field] && seq[i % field] <= 999);
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Asserts.assertTrue(0 <= seq[i % -field] && seq[i % -field] <= 999);
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}
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}
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public static void main(String... args) throws Exception {
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for (int i = 0; i < 10_000; i++) {
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test1();
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}
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}
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}
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