1 /*
2  * Copyright (c) 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 8202952
27  * @summary C2: Unexpected dead nodes after matching
28  *
29  * @run main/othervm -XX:-TieredCompilation -Xcomp -XX:CompileOnly=::test
30  *      compiler.c2.TestMatcherLargeOffset
31  */
32 package compiler.c2;
33 
34 public class TestMatcherLargeOffset {
35     public static final int N = 400;
36     public static int iArrFld[] = new int[N];
37 
m(int i4)38     public static void m(int i4) {
39         i4 |= -104;
40         iArrFld[(i4 >>> 1) % N] >>= i4;
41     }
42 
test()43     public static void test() {
44         int i2 = 1, i24 = 65;
45         for (int i1 = 7; i1 < 384; ++i1) {
46             for (long l = 2; l < 67; l++) {
47                 m(i2);
48                 for (i24 = 1; 2 > i24; ++i24) {
49                     iArrFld = iArrFld;
50                 }
51             }
52             i2 = (-229 / i24);
53         }
54     }
main(String[] strArr)55     public static void main(String[] strArr) {
56         for (int i = 0; i < 5; i++ ) {
57             test();
58         }
59     }
60 }
61