| /* |
| * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved. |
| * 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. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /** |
| * @test |
| * @bug 6805724 |
| * @summary ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant. |
| * |
| * @run main/othervm -Xcomp -XX:CompileOnly=Test6805724.fcomp Test6805724 |
| */ |
| |
| import java.net.URLClassLoader; |
| |
| 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 = Class.forName("Test6805724"); |
| URLClassLoader apploader = (URLClassLoader) 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 = new URLClassLoader(apploader.getURLs(), apploader.getParent()); |
| Class c = loader.loadClass("Test6805724"); |
| Runnable r = (Runnable) c.newInstance(); |
| r.run(); |
| } |
| } |
| } |