Mercurial > hg > truffle
diff test/compiler/6910484/Test.java @ 1154:174ade00803b
6910484: incorrect integer optimization (loosing and op-r in a given example)
Summary: Remove AND operation only if mask is equal to shift.
Reviewed-by: never
author | kvn |
---|---|
date | Fri, 08 Jan 2010 09:51:24 -0800 |
parents | |
children | c18cbe5936b8 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/compiler/6910484/Test.java Fri Jan 08 09:51:24 2010 -0800 @@ -0,0 +1,50 @@ +/* + * Copyright 2009 SAP. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + */ + +/** + * @test + * @bug 6910484 + * @summary incorrect integer optimization (loosing and op-r in a given example) + * + * @run main/othervm -Xbatch Test + */ + +public class Test { + + public static void main(String[] args) { + long iteration = 0; + for(int i = 0; i <11000; i++) { + iteration++; + int result = test(255); + if (result != 112) { + System.out.println("expected 112, but got " + result + " after iteration " + iteration); + System.exit(97); + } + } + } + + private static int test(int x) { + return (x & -32) / 2; + } + +}