1 /*
   2  * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 4093292
  27  * @summary Test for correct code generation by the JIT
  28  */
  29 public class ShiftTest {
  30     static final int w = 32;
  31 
  32     private static void doTest(long ct) throws Exception {
  33         int S22 = 0xc46cf7c2;
  34         int S23 = 0xcfda9162;
  35         int S24 = 0xd029aa4c;
  36         int S25 = 0x17cf1801;
  37         int A = (int)(ct & 0xffffffffL);
  38         int B = (int)(ct >>> 32);
  39         int x, y;
  40         x = B - S25;
  41         y = A & (w-1);
  42         B = ((x >>> y) | (x << (w-y))) ^ A;
  43         x = A - S24;
  44         y = B & (w-1);
  45         A = ((x >>> y) | (x << (w-y))) ^ B;
  46         x = B - S23;
  47         y = A & (w-1);
  48         B = ((x >>> y) | (x << (w-y))) ^ A;
  49         x = A - S22;
  50         y = B & (w-1);
  51         A = ((x >>> y) | (x << (w-y))) ^ B;
  52         String astr = Integer.toHexString(A);
  53         String bstr = Integer.toHexString(B);
  54         System.err.println("A = " + astr + " B = " + bstr);
  55         if ((!astr.equals("dcb38144")) ||
  56             (!bstr.equals("1916de73"))) {
  57             throw new RuntimeException("Unexpected shift results!");
  58         }
  59         System.err.println("Test passed");
  60     }
  61 
  62     public static void main(String[] args) throws Exception {
  63         doTest(0x496def29b74be041L);
  64     }
  65 }