hotspot/test/compiler/6866651/Test.java
author cfang
Mon, 17 Aug 2009 12:11:06 -0700
changeset 3682 42de755d7d6e
child 5547 f4b087cbb361
permissions -rw-r--r--
6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59) Summary: delay dead code elimination in set_req_X to make it safe Reviewed-by: kvn, never
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
3682
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
     1
/*
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
     2
 * Copyright 2009 Sun Microsystems, Inc.  All Rights Reserved.
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
     3
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
     4
 *
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
     5
 * This code is free software; you can redistribute it and/or modify it
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
     6
 * under the terms of the GNU General Public License version 2 only, as
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
     7
 * published by the Free Software Foundation.
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
     8
 *
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
     9
 * This code is distributed in the hope that it will be useful, but WITHOUT
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    10
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    11
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    12
 * version 2 for more details (a copy is included in the LICENSE file that
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    13
 * accompanied this code).
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    14
 *
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    15
 * You should have received a copy of the GNU General Public License version
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    16
 * 2 along with this work; if not, write to the Free Software Foundation,
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    17
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    18
 *
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    19
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    20
 * CA 95054 USA or visit www.sun.com if you need additional information or
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    21
 * have any questions.
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    22
 */
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    23
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    24
/**
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    25
 * @test
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    26
 * @bug 6866651
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    27
 * @summary delay dead node elimination in set_req_X to prevent killing the current node when it is in use
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    28
 *
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    29
 * @run main Test
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    30
 */
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    31
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    32
public class Test {
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    33
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    34
    static int sum() {
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    35
        int s = 0;
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    36
        for (int x = 1, y = 0; x != 0; x++, y--) {
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    37
            s ^= y;
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    38
        }
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    39
        return s;
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    40
    }
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    41
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    42
    public static void main(final String[] args) {
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    43
        for (int k = 0; k < 2; k++) {
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    44
            System.err.println(String.valueOf(sum()));
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    45
        }
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    46
    }
42de755d7d6e 6866651: Regression: simple int sum crashes jvm (build 1.6.0_14-b08 and 1.7.0-ea-b59)
cfang
parents:
diff changeset
    47
}