Mercurial > hg > truffle
view graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/ir/LocationNode.java @ 3078:b15101f82e2d
Added read elimination phase.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Tue, 28 Jun 2011 13:52:36 +0200 |
parents | 45ba159b4bd1 |
children | 607c6500c22e |
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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. */ package com.oracle.max.graal.compiler.ir; import com.oracle.max.graal.compiler.debug.*; import com.oracle.max.graal.compiler.gen.*; import com.oracle.max.graal.graph.*; import com.sun.cri.ci.*; public final class LocationNode extends FloatingNode { private static final int INPUT_COUNT = 0; private static final int SUCCESSOR_COUNT = 0; private int displacement; private CiKind valueKind; private Object locationIdentity; public LocationNode(Object identity, CiKind kind, int displacement, Graph graph) { super(CiKind.Illegal, INPUT_COUNT, SUCCESSOR_COUNT, graph); this.displacement = displacement; this.valueKind = kind; this.locationIdentity = identity; } @Override public <T extends Op> T lookup(Class<T> clazz) { if (clazz == LIRGenerator.LIRGeneratorOp.class) { return null; } return super.lookup(clazz); } @Override public void print(LogStream out) { out.print("mem location disp is ").print(displacement); } public CiKind getValueKind() { return valueKind; } @Override public Node copy(Graph into) { return new LocationNode(locationIdentity, valueKind, displacement, into); } public CiValue createAddress(LIRGenerator lirGenerator, Value object) { return new CiAddress(valueKind, lirGenerator.load(object), displacement); } public Object locationIdentity() { return locationIdentity; } public boolean same(LocationNode location) { return valueKind == location.valueKind && displacement == location.displacement; } }