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75 lines
2.8 KiB
Java
75 lines
2.8 KiB
Java
/*
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* Copyright (c) 2025, Red Hat, Inc. 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 8349139
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* @key randomness
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* @summary C2: Div looses dependency on condition that guarantees divisor not null in counted loop
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* @library /test/lib /
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* @run main/othervm -Xcomp -XX:-TieredCompilation -XX:CompileOnly=TestDivDependentOnMainLoopGuard::*
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* -XX:+UnlockDiagnosticVMOptions -XX:+StressGCM -XX:StressSeed=35878193 TestDivDependentOnMainLoopGuard
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* @run main/othervm -Xcomp -XX:-TieredCompilation -XX:CompileOnly=TestDivDependentOnMainLoopGuard::*
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* -XX:+UnlockDiagnosticVMOptions -XX:+StressGCM TestDivDependentOnMainLoopGuard
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* @run main/othervm -Xcomp -XX:CompileOnly=TestDivDependentOnMainLoopGuard::* TestDivDependentOnMainLoopGuard
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*/
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import jdk.test.lib.Utils;
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import java.util.Random;
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public class TestDivDependentOnMainLoopGuard {
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public static final int N = 400;
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private static final Random RANDOM = Utils.getRandomInstance();
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public static final int stop = RANDOM.nextInt(0, 68);
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public int iArrFld[]=new int[N];
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public void mainTest(String[] strArr1, int otherPhi) {
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int i=57657, i1=577, i2=6, i3=157, i4=12, i23=61271;
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boolean bArr[]=new boolean[N];
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for (i = 9; 379 > i; i++) {
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i2 = 1;
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do {
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i1 <<= i3;
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} while (++i2 < 68);
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for (i23 = 68; i23 > stop; otherPhi=i23-1, i23--) {
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bArr[i23 + 1] = true;
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try {
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i1 = (-42360 / i23);
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iArrFld[i + 1] = otherPhi;
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} catch (ArithmeticException a_e) {}
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}
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}
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}
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public static void main(String[] strArr) {
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TestDivDependentOnMainLoopGuard _instance = new TestDivDependentOnMainLoopGuard();
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for (int i = 0; i < 10; i++ ) {
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_instance.mainTest(strArr, 0);
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}
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}
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}
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