Mercurial > hg > truffle
view test/compiler/6756768/Test6756768.java @ 2134:b158bed62ef5
6994297: G1: do first-level slow-path allocations with a CAS
Summary: First attempt to allocate out the current alloc region using a CAS instead of taking the Heap_lock (first level of G1's slow allocation path). Only if that fails and it's necessary to replace the current alloc region take the Heap_lock (that's the second level of G1's slow allocation path).
Reviewed-by: johnc, brutisso, ysr
author | tonyp |
---|---|
date | Wed, 12 Jan 2011 16:34:25 -0500 |
parents | c18cbe5936b8 |
children |
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/* * Copyright (c) 2008, 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 6756768 * @summary C1 generates invalid code * * @run main/othervm -Xcomp Test6756768 */ class Test6756768a { static boolean var_1 = true; } final class Test6756768b { static boolean var_24 = false; static int var_25 = 0; static boolean var_temp1 = Test6756768a.var_1 = false; } public final class Test6756768 extends Test6756768a { final static int var = var_1 ^ (Test6756768b.var_24 ? var_1 : var_1) ? Test6756768b.var_25 : 1; static public void main(String[] args) { if (var != 0) { throw new InternalError("var = " + var); } } }