Mercurial > hg > truffle
view graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/LoopSafepointInsertionPhase.java @ 11760:ce0b00597980
made safepoint-on-return use specialized HotSpot runtime support for such safepoints (which have no debug info attached)
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 24 Sep 2013 08:51:02 +0200 |
parents | graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/SafepointInsertionPhase.java@2b2de196d8f9 |
children | d90e5c22ba55 |
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/* * Copyright (c) 2011, 2013, 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. */ package com.oracle.graal.phases.common; import static com.oracle.graal.phases.GraalOptions.*; import com.oracle.graal.nodes.*; import com.oracle.graal.phases.*; /** * Adds safepoints to loops. */ public class LoopSafepointInsertionPhase extends Phase { @Override protected void run(StructuredGraph graph) { if (GenLoopSafepoints.getValue()) { for (LoopEndNode loopEndNode : graph.getNodes(LoopEndNode.class)) { if (loopEndNode.canSafepoint()) { SafepointNode safepointNode = graph.add(new SafepointNode()); graph.addBeforeFixed(loopEndNode, safepointNode); } } } } }