# HG changeset patch
# User Thomas Wuerthinger <thomas@wuerthinger.net>
# Date 1307619709 -7200
# Node ID 287ddc8a9119bd6181e3ac90105866632b36e687
# Parent  e37f27b6af77e088e54ecaaffe757f1e9de6a433
Added guard node.

diff -r e37f27b6af77 -r 287ddc8a9119 graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/ir/GuardNode.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/ir/GuardNode.java	Thu Jun 09 13:41:49 2011 +0200
@@ -0,0 +1,65 @@
+/*
+ * 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 Instruction {
+    private static final int INPUT_COUNT = 1;
+    private static final int INPUT_NODE = 0;
+
+    private static final int SUCCESSOR_COUNT = 0;
+
+    /**
+     * The instruction that produces the object tested against null.
+     */
+     public FloatingNode node() {
+        return (FloatingNode) inputs().get(super.inputCount() + INPUT_NODE);
+    }
+
+    public FloatingNode setNode(FloatingNode n) {
+        return (FloatingNode) 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);
+    }
+}