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 6636138
  27  * @summary SuperWord::co_locate_pack(Node_List* p) generates memory graph that leads to memory order violation.
  28  *
  29  * @run main/othervm -Xbatch -XX:CompileOnly=Test2.shift Test2


  30  */
  31 
  32 public class Test2 {


  33 
  34     public static void init(int src[]) {
  35         // Initialize the array
  36         for (int i = 0; i < src.length; i++)
  37             src[i] = i;
  38     }
  39 
  40    public static void shift(int src[]) {
  41        //left-shift the array
  42        for (int i = src.length-1; i > 0; i--){
  43            int tmp  = src[i];
  44            src[i]   = src[i-1];
  45            src[i-1] = tmp;
  46        }
  47     }
  48 
  49     public static void verify(int src[]) {
  50         for (int i = 0; i < src.length; i++){
  51             int value = (i-1 + src.length)%src.length; // correct value after shifting
  52                 if (src[i] != value) {
  53                     System.out.println("Error: src["+i+"] should be "+ value + " instead of " + src[i]);
  54                     System.exit(97);
  55                 }
  56         }
  57     }
  58 
  59     public static void test() {
  60         int[] src = new int[10];
  61         init(src);
  62         shift(src);
  63         verify(src);
  64     }
  65 
  66     public static void main(String[] args) {
  67         for (int i=0; i< 2000; i++)
  68             test();
  69     }
  70 }

   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 6636138
  27  * @summary SuperWord::co_locate_pack(Node_List* p) generates memory graph that leads to memory order violation.
  28  *
  29  * @run main/othervm -Xbatch
  30  *      -XX:CompileCommand=compileonly,compiler.c2.Test6636138_2::shift
  31  *      compiler.c2.Test6636138_2
  32  */
  33 
  34 package compiler.c2;
  35 
  36 public class Test6636138_2 {
  37 
  38     public static void init(int src[]) {
  39         // Initialize the array
  40         for (int i = 0; i < src.length; i++)
  41             src[i] = i;
  42     }
  43 
  44     public static void shift(int src[]) {
  45         //left-shift the array
  46         for (int i = src.length - 1; i > 0; i--) {
  47             int tmp = src[i];
  48             src[i] = src[i - 1];
  49             src[i - 1] = tmp;
  50         }
  51     }
  52 
  53     public static void verify(int src[]) {
  54         for (int i = 0; i < src.length; i++) {
  55             int value = (i - 1 + src.length) % src.length; // correct value after shifting
  56             if (src[i] != value) {
  57                 System.out.println("Error: src[" + i + "] should be " + value + " instead of " + src[i]);
  58                 System.exit(97);
  59             }
  60         }
  61     }
  62 
  63     public static void test() {
  64         int[] src = new int[10];
  65         init(src);
  66         shift(src);
  67         verify(src);
  68     }
  69 
  70     public static void main(String[] args) {
  71         for (int i = 0; i < 2000; i++)
  72             test();
  73     }
  74 }