Mercurial > hg > graal-compiler
view test/compiler/7041100/Test7041100.java @ 12875:d13d7aba8c12
8023657: New type profiling points: arguments to call
Summary: x86 interpreter and c1 type profiling for arguments at calls
Reviewed-by: kvn, twisti
author | roland |
---|---|
date | Wed, 09 Oct 2013 16:32:21 +0200 |
parents | e6d7eed3330c |
children |
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/* * 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 7041100 * @summary The load in String.equals intrinsic executed before null check * * @run main/othervm -Xbatch Test7041100 abc def */ public class Test7041100 { static String n = null; public static void main(String[] args) throws Exception { for (int i = 0; i < 10000; i++) { stringEQ(args[0], args[1]); stringEQ(args[0], args[0]); stringEQ(args[0], n); stringEQ(n, args[0]); } } public static boolean stringEQ(String a, String b) { if (a == b) return true; if (a == null || b == null) return false; else return a.equals(b); } }