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