Mercurial > hg > graal-compiler
comparison test/compiler/7199742/Test7199742.java @ 6824:f13867c41f73
7199742: A lot of C2 OSR compilations of the same method's bci
Summary: Don't clone head of OSR loop.
Reviewed-by: jrose, twisti
author | kvn |
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date | Tue, 02 Oct 2012 14:49:21 -0700 |
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6823:859c45fb8cea | 6824:f13867c41f73 |
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1 /* | |
2 * Copyright (c) 2012, 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 /** | |
26 * @test | |
27 * @bug 7199742 | |
28 * @summary A lot of C2 OSR compilations of the same method's bci | |
29 * | |
30 * @run main/othervm -Xmx32m -Xbatch Test7199742 | |
31 */ | |
32 | |
33 public class Test7199742 { | |
34 private static final int ITERS = 10000000; | |
35 public static void main(String args[]) { | |
36 Test7199742 t = new Test7199742(); | |
37 for (int i=0; i<10; i++) { | |
38 test(t, 7); | |
39 } | |
40 } | |
41 static Test7199742 test(Test7199742 t, int m) { | |
42 int i = -(ITERS/2); | |
43 if (i == 0) return null; | |
44 Test7199742 v = null; | |
45 while(i < ITERS) { | |
46 if ((i&m) == 0) { | |
47 v = t; | |
48 } | |
49 i++; | |
50 } | |
51 return v; | |
52 } | |
53 } | |
54 |