test/hotspot/jtreg/compiler/arraycopy/TestMissingControl.java

/*
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 * 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.
 *
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 * questions.
 */

/*
 * @test
 * @bug 8055153
 * @summary missing control on LoadRange and LoadKlass when array copy macro node is expanded
 *
 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement -XX:-TieredCompilation
 *                   compiler.arraycopy.TestMissingControl
 *
 */

package compiler.arraycopy;

public class TestMissingControl {

    static int[] m1(int[] a2) {
        int[] a1 = new int[10];
        System.arraycopy(a1, 0, a2, 0, 10);
        return a1;
    }

    static class A {
    }

    static Object m2(Object[] a2) {
        A[] a1 = new A[10];
        System.arraycopy(a1, 0, a2, 0, 10);
        return a1;
    }

    static void test1() {
        int[] a2 = new int[10];
        int[] a3 = new int[5];

        // compile m1 with arraycopy intrinsified
        for (int i = 0; i < 20000; i++) {
            m1(a2);
        }

        // make m1 trap
        for (int i = 0; i < 10; i++) {
            try {
                m1(a3);
            } catch(IndexOutOfBoundsException ioobe) {
            }
        }

        // recompile m1
        for (int i = 0; i < 20000; i++) {
            m1(a2);
        }

        try {
            m1(null);
        } catch(NullPointerException npe) {}
    }

    static void test2() {
        A[] a2 = new A[10];
        A[] a3 = new A[5];

        // compile m2 with arraycopy intrinsified
        for (int i = 0; i < 20000; i++) {
            m2(a2);
        }

        // make m2 trap
        for (int i = 0; i < 10; i++) {
            try {
                m2(a3);
            } catch(IndexOutOfBoundsException ioobe) {
            }
        }

        // recompile m2
        for (int i = 0; i < 20000; i++) {
            m2(a2);
        }

        try {
            m2(null);
        } catch(NullPointerException npe) {}
    }

    static public void main(String[] args) {
        test1();
        test2();
    }
}