Mercurial > hg > graal-jvmci-8
diff test/compiler/codegen/LoadWithMask2.java @ 14271:7e8bd81ce93e
8031743: C2: loadI2L_immI broken for negative memory values
Summary: Restrict loadI2L_imm optimizations to positive values of mask
Reviewed-by: kvn, dlong
author | iveresov |
---|---|
date | Tue, 21 Jan 2014 20:05:28 -0800 |
parents | |
children | 1ec24746bb40 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/compiler/codegen/LoadWithMask2.java Tue Jan 21 20:05:28 2014 -0800 @@ -0,0 +1,55 @@ +/* + * Copyright (c) 2014, 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 8031743 + * @summary loadI2L_immI broken for negative memory values + * @run main/othervm -server -Xbatch -XX:-TieredCompilation -XX:CompileCommand=compileonly,*.foo* LoadWithMask2 + * + */ +public class LoadWithMask2 { + static int x; + static long foo1() { + return x & 0xfffffffe; + } + static long foo2() { + return x & 0xff000000; + } + static long foo3() { + return x & 0x8abcdef1; + } + + public static void main(String[] args) { + x = -1; + long l = 0; + for (int i = 0; i < 100000; ++i) { + l = foo1() & foo2() & foo3(); + } + if (l > 0) { + System.out.println("FAILED"); + System.exit(97); + } + System.out.println("PASSED"); + } +}