jdk/test/hotspot/jtreg/compiler/loopopts/superword/TestAliasingCheckVPointerVariablesNotAvailable.java

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/*
 * @test id=with-flags
 * @bug 8373502
 * @summary Test where a VPointer variable was pinned at the pre-loop, but not available at the
 *          Auto_Vectorization_Check, and so it should not be used for the auto vectorization
 *          aliasing check, to avoid a bad (circular) graph.
 * @run main/othervm
 *      -XX:CompileCommand=compileonly,*TestAliasingCheckVPointerVariablesNotAvailable::test
 *      -XX:-TieredCompilation
 *      -Xcomp
 *      ${test.main.class}
 */

/*
 * @test id=vanilla
 * @bug 8373502
 * @run main ${test.main.class}
 */

package compiler.loopopts.superword;

public class TestAliasingCheckVPointerVariablesNotAvailable {
    static int iFld;

    public static void main(String[] strArr) {
        test();
    }

    static void test() {
        int iArr[] = new int[400];
        boolean flag = false;
        for (int i = 6; i < 50000; i++) { // Trigger OSR
            try {
                int x = 234 / iFld;
                iFld = iArr[3];
            } catch (ArithmeticException a_e) {
            }
            for (int j = i; j < 2; j++) {
                if (flag) {
                    iArr[j] = 117;
                } else {
                    iArr[1] = 34;
                }
                iArr[1] += i;
            }
        }
    }
}