diff -r cf560f960e85 -r 49ad0989c84f hotspot/test/compiler/loopopts/TestCastIINoLoopLimitCheck.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/hotspot/test/compiler/loopopts/TestCastIINoLoopLimitCheck.java Tue Feb 24 15:23:05 2015 +0100 @@ -0,0 +1,46 @@ +/* + * Copyright (c) 2015, 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 8073184 + * @summary CastII that guards counted loops confuses range check elimination with LoopLimitCheck off + * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-LoopLimitCheck -XX:CompileOnly=TestCastIINoLoopLimitCheck.m -Xcomp TestCastIINoLoopLimitCheck + * + */ + +public class TestCastIINoLoopLimitCheck { + + static void m(int i, int index, char[] buf) { + while (i >= 65536) { + i = i / 100; + buf [--index] = 0; + buf [--index] = 1; + } + } + + static public void main(String[] args) { + m(0, 0, null); + } +}