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annotate graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/LoopSafepointInsertionPhase.java @ 19429:459337ee0593

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Experiment with a different way of swapping instanceof profiles in IfNode.prepareForSwap
author Gilles Duboscq <gilles.m.duboscq@oracle.com>
date Tue, 17 Feb 2015 18:05:39 +0100
parents 61d3cb8e1280
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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29c2103630ef New strategy for inserting safepoints - always insert in loops but avoid in leaf methods.
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2 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a44b5ebb28a0 moved loop safepoint insertion from graph building to just before scheduling, removing the need for safepoint elimination
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.graal.phases.common;
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d90e5c22ba55 Move GraalOptions to graal.compiler.common.
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25 import static com.oracle.graal.compiler.common.GraalOptions.*;
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27 import com.oracle.graal.nodes.*;
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28 import com.oracle.graal.phases.*;
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30 /**
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31 * Adds safepoints to loops.
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32 */
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33 public class LoopSafepointInsertionPhase extends Phase {
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34
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35 @Override
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36 protected void run(StructuredGraph graph) {
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37 if (GenLoopSafepoints.getValue()) {
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61d3cb8e1280 Add generic parameter to NodeClass. Change Graph#getNodes(Class) to Graph#getNodes(NodeClass).
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38 for (LoopEndNode loopEndNode : graph.getNodes(LoopEndNode.TYPE)) {
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39 if (loopEndNode.canSafepoint()) {
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40 SafepointNode safepointNode = graph.add(new SafepointNode());
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41 graph.addBeforeFixed(loopEndNode, safepointNode);
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42 }
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43 }
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44 }
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45 }
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46 }