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 8086046
27 * @summary load bypasses arraycopy that sets the value after the ArrayCopyNode is expanded
28 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement -XX:CompileCommand=dontinline,TestLoadBypassArrayCopy::test_helper -XX:-TieredCompilation TestLoadBypassArrayCopy
29 *
30 */
31
32 public class TestLoadBypassArrayCopy {
33
34 static long i;
35 static boolean test_helper() {
36 i++;
37 if ((i%10) == 0) {
38 return false;
39 }
40 return true;
41 }
42
43 static int test(int[] src, int len, boolean flag) {
44 int[] dest = new int[10];
45 int res = 0;
46 while (test_helper()) {
47 System.arraycopy(src, 0, dest, 0, len);
48 // predicate moved out of loop so control of following
49 // load is not the ArrayCopyNode. Otherwise, if the memory
50 // of the load is changed and the control is set to the
51 // ArrayCopyNode the graph is unschedulable and the test
|
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 8086046
27 * @summary load bypasses arraycopy that sets the value after the ArrayCopyNode is expanded
28 *
29 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement
30 * -XX:CompileCommand=dontinline,compiler.arraycopy.TestLoadBypassArrayCopy::test_helper
31 * -XX:-TieredCompilation
32 * compiler.arraycopy.TestLoadBypassArrayCopy
33 */
34
35 package compiler.arraycopy;
36
37 public class TestLoadBypassArrayCopy {
38
39 static long i;
40 static boolean test_helper() {
41 i++;
42 if ((i%10) == 0) {
43 return false;
44 }
45 return true;
46 }
47
48 static int test(int[] src, int len, boolean flag) {
49 int[] dest = new int[10];
50 int res = 0;
51 while (test_helper()) {
52 System.arraycopy(src, 0, dest, 0, len);
53 // predicate moved out of loop so control of following
54 // load is not the ArrayCopyNode. Otherwise, if the memory
55 // of the load is changed and the control is set to the
56 // ArrayCopyNode the graph is unschedulable and the test
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