1 /*
2  * Copyright (c) 2019, Red Hat, Inc. 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 8234350
27  * @summary loop unrolling breaks when outer strip mined loop contains dead node
28  *
29  * @run main/othervm -Xcomp -XX:-TieredCompilation -XX:CompileOnly=DeadNodesInOuterLoopAtLoopCloning2 DeadNodesInOuterLoopAtLoopCloning2
30  *
31  */
32 
33 public class DeadNodesInOuterLoopAtLoopCloning2 {
vMeth(boolean b, int i, float f)34     public static void vMeth(boolean b, int i, float f) {
35         int i1=-4, i2=14, i16=10;
36         byte by=116;
37 
38         for (i1 = 323; i1 > 3; i1 -= 2) {
39             if (i2 != 0) {
40                 return;
41             }
42             for (i16 = 1; i16 < 10; i16++) {
43                 i2 = by;
44                 i += (i16 - i2);
45                 i2 -= i16;
46                 if (b) {
47                     i = by;
48                 }
49                 i2 *= 20;
50             }
51         }
52     }
53 
main(String[] strArr)54     public static void main(String[] strArr) {
55         DeadNodesInOuterLoopAtLoopCloning2 _instance = new DeadNodesInOuterLoopAtLoopCloning2();
56         for (int i = 0; i < 10; i++ ) {
57             _instance.vMeth(true, 168, -125.661F);
58         }
59     }
60 }
61