Mercurial > hg > graal-compiler
diff test/compiler/5091921/Test6931567.java @ 3345:bad7ecd0b6ed
5091921: Sign flip issues in loop optimizer
Summary: Fix integer overflow problem in the code generated by loop optimizer.
Reviewed-by: never
author | kvn |
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date | Wed, 04 May 2011 13:12:42 -0700 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/compiler/5091921/Test6931567.java Wed May 04 13:12:42 2011 -0700 @@ -0,0 +1,62 @@ +/* + * 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 6931567 + * @summary JIT Error (on class file compiled with eclipse) on JVM x64 (but not on x32!). + * + * @run main Test6931567 + */ + +// Should be compiled with javac from JDK1.3 to get bytecode which shows the problem. +public class Test6931567 { + + public static void main(final String[] args) { + booleanInvert(Integer.MAX_VALUE); + booleanInvert(Integer.MAX_VALUE - 1); + } + + private static void booleanInvert(final int max) { + boolean test1 = false; + boolean test2 = false; + + for (int i = 0; i < max; i++) { + test1 = !test1; + } + + for (int i = 0; i < max; i++) { + test2 ^= true; + } + + if (test1 != test2) { + System.out.println("ERROR: Boolean invert\n\ttest1=" + test1 + + "\n\ttest2=" + test2); + System.exit(97); + } else { + System.out.println("Passed!"); + } + } +} +