jdk/test/hotspot/jtreg/compiler/loopstripmining/TestMismatchedMemoryPhis.java

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/**
 * @test
 * @bug 8370200
 * @summary Crash: assert(outer->outcnt() >= phis + 2 - be_loads && outer->outcnt() <= phis + 2 + stores + 1) failed: only phis
 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockDiagnosticVMOptions -XX:StressSeed=36200582 -XX:CompileCommand=quiet
 *                   -XX:CompileCommand=compileonly,*TestMismatchedMemoryPhis*::mainTest -XX:-TieredCompilation
 *                   -Xcomp -XX:+StressIGVN -XX:+StressLoopPeeling -XX:PerMethodTrapLimit=0 ${test.main.class}
 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockDiagnosticVMOptions -XX:CompileCommand=quiet
 *                   -XX:CompileCommand=compileonly,*TestMismatchedMemoryPhis*::mainTest -XX:-TieredCompilation
 *                   -Xcomp -XX:+StressIGVN -XX:+StressLoopPeeling -XX:PerMethodTrapLimit=0 ${test.main.class}
 * @run main ${test.main.class}
 */

package compiler.loopstripmining;

public class TestMismatchedMemoryPhis {
    long l;
    volatile int iArrFld[];

    void mainTest() {
        int i, i1, i15 = 4, i16 = 4;
        for (i = 1; i < 7; ++i) {
            l = i;
        }
        int j = 1;
        while (++j < 4) {
            try {
                i1 = i15 % i16;
                i16 = i15;
                i1 = 0 % iArrFld[j];
            } catch (ArithmeticException a_e) {
            }
        }
    }

    static public void main(String[] args) {
        try {
            new TestMismatchedMemoryPhis().mainTest();
        } catch (NullPointerException npe) {
            // Expected
        }
    }
}