TestDivZeroWithSplitIf.java

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/*
 * @test
 * @key stress randomness
 * @bug 8257822
 * @summary Verify that zero check is executed before division/modulo operation.
 * @requires vm.compiler2.enabled
 * @run main/othervm -Xcomp -XX:-TieredCompilation -XX:CompileOnly=compiler/loopopts/TestDivZeroWithSplitIf::test
 *                   -XX:+UnlockDiagnosticVMOptions -XX:+StressGCM -XX:StressSeed=873732072 compiler.loopopts.TestDivZeroWithSplitIf
 * @run main/othervm -Xcomp -XX:-TieredCompilation -XX:CompileOnly=compiler/loopopts/TestDivZeroWithSplitIf::test
 *                   -XX:+UnlockDiagnosticVMOptions -XX:+StressGCM compiler.loopopts.TestDivZeroWithSplitIf
 */

package compiler.loopopts;

public class TestDivZeroWithSplitIf {
    public static int iArrFld[] = new int[10];

    public static void test() {
        int x = 20;
        int y = 0;
        int z = 10;
        for (int i = 9; i < 99; i += 2) {
            for (int j = 3; j < 100; j++) {
                for (int k = 1; k < 2; k++) {
                    try {
                        x = (-65229 / y); // Division by zero
                        z = (iArrFld[5] / 8); // RangeCheckNode
                    } catch (ArithmeticException a_e) {}
                    try {
                        y = (-38077 / y);
                        z = (y / 9);
                    } catch (ArithmeticException a_e) {}
                    y = 8;
                    z += k;
                }
            }
        }
    }
    public static void main(String[] strArr) {
        for (int i = 0; i < 10; i++) {
            test();
        }
    }
}