Mercurial > hg > graal-jvmci-8
view graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/ir/GuardNode.java @ 3032:2433838f0414
Create null checks as guard nodes.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
---|---|
date | Mon, 20 Jun 2011 15:14:36 +0200 |
parents | cd4176d590e7 |
children | b6282786e163 |
line wrap: on
line source
/* * 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.graph.*; import com.sun.cri.ci.*; public final class GuardNode extends FloatingNode { private static final int INPUT_COUNT = 2; private static final int INPUT_ANCHOR = 0; private static final int INPUT_NODE = 1; private static final int SUCCESSOR_COUNT = 0; public FixedNode anchor() { return (FixedNode) inputs().get(super.inputCount() + INPUT_ANCHOR); } public void setAnchor(FixedNode anchor) { inputs().set(super.inputCount() + INPUT_ANCHOR, anchor); } /** * The instruction that produces the object tested against null. */ public BooleanNode node() { return (BooleanNode) inputs().get(super.inputCount() + INPUT_NODE); } public void setNode(BooleanNode n) { inputs().set(super.inputCount() + INPUT_NODE, n); } public GuardNode(Graph graph) { super(CiKind.Illegal, INPUT_COUNT, SUCCESSOR_COUNT, graph); } @Override public void accept(ValueVisitor v) { v.visitGuardNode(this); } @Override public void print(LogStream out) { out.print("clip node ").print(node()); } @Override public Node copy(Graph into) { return new GuardNode(into); } }