aoqi@0: /*
aoqi@0:  * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: /**
aoqi@0:  * @test
aoqi@0:  * @bug 6805724
aoqi@0:  * @summary ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
aoqi@0:  *
aoqi@0:  * @run main/othervm -Xcomp -XX:CompileOnly=Test6805724.fcomp Test6805724
aoqi@0:  */
aoqi@0: 
aoqi@0: import java.net.URLClassLoader;
aoqi@0: 
aoqi@0: public class Test6805724 implements Runnable {
aoqi@0:     // Initialize DIVISOR so that it is final in this class.
aoqi@0:     static final long DIVISOR;  // 2^k-1 constant
aoqi@0: 
aoqi@0:     static {
aoqi@0:         long value = 0;
aoqi@0:         try {
aoqi@0:             value = Long.decode(System.getProperty("divisor"));
aoqi@0:         } catch (Throwable t) {
aoqi@0:             // This one is required for the Class.forName() in main.
aoqi@0:         }
aoqi@0:         DIVISOR = value;
aoqi@0:     }
aoqi@0: 
aoqi@0:     static long fint(long x) {
aoqi@0:         return x % DIVISOR;
aoqi@0:     }
aoqi@0: 
aoqi@0:     static long fcomp(long x) {
aoqi@0:         return x % DIVISOR;
aoqi@0:     }
aoqi@0: 
aoqi@0:     public void run() {
aoqi@0:         long a = 0x617981E1L;
aoqi@0: 
aoqi@0:         long expected = fint(a);
aoqi@0:         long result = fcomp(a);
aoqi@0: 
aoqi@0:         if (result != expected)
aoqi@0:             throw new InternalError(result + " != " + expected);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public static void main(String args[]) throws Exception {
aoqi@0:         Class cl = Class.forName("Test6805724");
aoqi@0:         URLClassLoader apploader = (URLClassLoader) cl.getClassLoader();
aoqi@0: 
aoqi@0:         // Iterate over all 2^k-1 divisors.
aoqi@0:         for (int k = 1; k < Long.SIZE; k++) {
aoqi@0:             long divisor = (1L << k) - 1;
aoqi@0:             System.setProperty("divisor", "" + divisor);
aoqi@0:             ClassLoader loader = new URLClassLoader(apploader.getURLs(), apploader.getParent());
aoqi@0:             Class c = loader.loadClass("Test6805724");
aoqi@0:             Runnable r = (Runnable) c.newInstance();
aoqi@0:             r.run();
aoqi@0:         }
aoqi@0:     }
aoqi@0: }