Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/opto/Block.java @ 7353:b5280041f59e
Experiment with soft alignment for branch targets.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sun, 13 Jan 2013 19:32:16 +0100 |
parents | f6f3bb0ee072 |
children | 79f492f184d0 |
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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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ package sun.jvm.hotspot.opto; import java.util.*; import java.io.PrintStream; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.runtime.*; import sun.jvm.hotspot.oops.*; import sun.jvm.hotspot.types.*; public class Block extends VMObject { static { VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) { initialize(VM.getVM().getTypeDataBase()); } }); } private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { Type type = db.lookupType("Block"); nodesField = type.getAddressField("_nodes"); succsField = type.getAddressField("_succs"); numSuccsField = new CIntField(type.getCIntegerField("_num_succs"), 0); preOrderField = new CIntField(type.getCIntegerField("_pre_order"), 0); domDepthField = new CIntField(type.getCIntegerField("_dom_depth"), 0); idomField = type.getAddressField("_idom"); freqField = type.getJFloatField("_freq"); } private static AddressField nodesField; private static AddressField succsField; private static CIntField numSuccsField; private static CIntField preOrderField; private static CIntField domDepthField; private static AddressField idomField; private static JFloatField freqField; public Block(Address addr) { super(addr); } public int preOrder() { return (int)preOrderField.getValue(getAddress()); } public float freq() { return (float)freqField.getValue(getAddress()); } public Node_List nodes() { return new Node_List(getAddress().addOffsetTo(nodesField.getOffset())); } public void dump(PrintStream out) { out.print("B" + preOrder()); out.print(" Freq: " + freq()); out.println(); Node_List nl = nodes(); int cnt = nl.size(); for( int i=0; i<cnt; i++ ) nl.at(i).dump(out); out.print("\n"); } }