1 /*
2  * Copyright (c) 2011, 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
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22  */
23 
24 /**
25  * @test
26  * @bug 6796786
27  * @summary invalid FP identity transform - (a - b) -> b - a
28  *
29  * @run main/othervm -Xbatch compiler.c2.Test6796786
30  */
31 
32 package compiler.c2;
33 
34 public class Test6796786 {
35     static volatile float d1;
36     static volatile float d2;
37 
main(String[] args)38     public static void main(String[] args) {
39         int total = 0;
40         for (int i = 0; i < 100000; i++) {
41             if (Float.floatToRawIntBits(- (d1 - d2)) == Float.floatToRawIntBits(-0.0f)) {
42                 total++;
43             }
44         }
45         if (total != 100000) {
46             throw new InternalError();
47         }
48     }
49 }
50