Mercurial > hg > truffle
diff test/compiler/7046096/Test7046096.java @ 3788:e3cbc9ddd434
7044738: Loop unroll optimization causes incorrect result
Summary: take into account memory dependencies when clonning nodes in clone_up_backedge_goo().
Reviewed-by: never
author | kvn |
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date | Tue, 28 Jun 2011 15:24:29 -0700 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/compiler/7046096/Test7046096.java Tue Jun 28 15:24:29 2011 -0700 @@ -0,0 +1,65 @@ +/* + * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + * + */ + +/** + * @test + * @bug 7046096 + * @summary SEGV IN C2 WITH 6U25 + * + * @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:+OptimizeStringConcat Test7046096 + */ + + +public class Test7046096 { + + static int first = 1; + + String add(String str) { + if (first != 0) { + return str + "789"; + } else { + return "null"; + } + } + + String test(String str) { + for (int i=0; i < first; i++) { + if (i > 1) + return "bad"; + } + return add(str+"456"); + } + + public static void main(String [] args) { + Test7046096 t = new Test7046096(); + for (int i = 0; i < 11000; i++) { + String str = t.test("123"); + if (!str.equals("123456789")) { + System.out.println("FAILED: " + str + " != \"123456789\""); + System.exit(97); + } + } + } +} +