Java example source code file (LoadWithMask2.java)

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loadwithmask2

The LoadWithMask2.java Java example source code

/*
 * Copyright (c) 2014, 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 8031743
 * @summary loadI2L_immI broken for negative memory values
 * @run main/othervm -server -Xbatch -XX:-TieredCompilation -XX:CompileCommand=compileonly,*.foo* LoadWithMask2
 *
 */
public class LoadWithMask2 {
  static int x;
  static long foo1() {
    return x & 0xfffffffe;
  }
  static long foo2() {
    return x & 0xff000000;
  }
  static long foo3() {
    return x & 0x8abcdef1;
  }

  public static void main(String[] args) {
    x = -1;
    long l = 0;
    for (int i = 0; i < 100000; ++i) {
      l = foo1() & foo2() & foo3();
    }
    if (l > 0) {
      System.out.println("FAILED");
      System.exit(97);
    }
    System.out.println("PASSED");
  }
}