hotspot/test/compiler/arraycopy/TestEliminatedArrayLoopPredicateCopyDeopt.java
author thartmann
Thu, 12 May 2016 08:23:25 +0200
changeset 38675 066fcb1eb80a
parent 32733 0982a7e7eb15
child 40059 c2304140ed64
permissions -rw-r--r--
8155643: Java crash with assert in Xcomp mode and disabled ReduceInitialCardMarks Summary: We should not emit a subtype check for CloneOop arraycopy. Reviewed-by: kvn
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
32733
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
     1
/*
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
     2
 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
     3
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
     4
 *
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
     5
 * This code is free software; you can redistribute it and/or modify it
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
     6
 * under the terms of the GNU General Public License version 2 only, as
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
     7
 * published by the Free Software Foundation.
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
     8
 *
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
     9
 * This code is distributed in the hope that it will be useful, but WITHOUT
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    10
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    11
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    12
 * version 2 for more details (a copy is included in the LICENSE file that
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    13
 * accompanied this code).
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    14
 *
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    15
 * You should have received a copy of the GNU General Public License version
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    16
 * 2 along with this work; if not, write to the Free Software Foundation,
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    17
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    18
 *
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    19
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    20
 * or visit www.oracle.com if you need additional information or have any
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    21
 * questions.
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    22
 */
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    23
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    24
/*
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    25
 * @test
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    26
 * @bug 8134974
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    27
 * @summary Cannot pin eliminated arraycopy loads for deopt state in uncommon trap path if it is a loop predicate unc
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    28
 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement TestEliminatedArrayLoopPredicateCopyDeopt
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    29
 *
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    30
 */
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    31
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    32
public class TestEliminatedArrayLoopPredicateCopyDeopt {
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    33
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    34
    static boolean test(int[] array_src) {
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    35
        int[] array_dst = new int[10];
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    36
        System.arraycopy(array_src, 0, array_dst, 0, 10);
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    37
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    38
        for (int i = 0; i < 100; i++) {
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    39
            array_src[i] = i;
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    40
        }
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    41
        if (array_dst[0] == 0) {
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    42
            return true;
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    43
        }
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    44
        return false;
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    45
    }
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    46
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    47
    static public void main(String[] args) {
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    48
        int[] array_src = new int[100];
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    49
        for (int i = 0; i < 20000; i++) {
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    50
            test(array_src);
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    51
        }
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    52
    }
0982a7e7eb15 8134974: 8130847 broken with loop predicates
roland
parents:
diff changeset
    53
}