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/**

 * @test

 * @bug 6805724

 * @summary ModLNode::Ideal() generates functionally incorrect graph

 *          when divisor is any (2^k-1) constant.

 * @modules java.base/jdk.internal.misc

 * @library /test/lib

 *

 * @run main/othervm -Xcomp

 *      -XX:CompileCommand=compileonly,compiler.c2.Test6805724::fcomp

 *      compiler.c2.Test6805724

 */

package compiler.c2;

import jdk.test.lib.Utils;

public class Test6805724 implements Runnable {

    // Initialize DIVISOR so that it is final in this class.

    static final long DIVISOR;  // 2^k-1 constant

    static {

        long value = 0;

        try {

            value = Long.decode(System.getProperty("divisor"));

        } catch (Throwable t) {

            // This one is required for the Class.forName() in main.

        }

        DIVISOR = value;

    }

    static long fint(long x) {

        return x % DIVISOR;

    }

    static long fcomp(long x) {

        return x % DIVISOR;

    }

    public void run() {

        long a = 0x617981E1L;

        long expected = fint(a);

        long result = fcomp(a);

        if (result != expected)

            throw new InternalError(result + " != " + expected);

    }

    public static void main(String args[]) throws Exception {

        Class cl = Test6805724.class;

        ClassLoader apploader = cl.getClassLoader();

        // Iterate over all 2^k-1 divisors.

        for (int k = 1; k < Long.SIZE; k++) {

            long divisor = (1L << k) - 1;

            System.setProperty("divisor", "" + divisor);

            ClassLoader loader

                    = Utils.getTestClassPathURLClassLoader(apploader.getParent());

            Class c = loader.loadClass(Test6805724.class.getName());

            Runnable r = (Runnable) c.newInstance();

            r.run();

        }

    }

}