--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.max.graal.compiler/src/com/sun/c1x/lir/LIROp0.java	Wed Jun 08 08:42:25 2011 +0200
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2009, 2010, 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.sun.c1x.lir;
+
+import com.sun.cri.ci.*;
+
+/**
+ * The {@code LIROp0} class definition.
+ *
+ * @author Marcelo Cintra
+ *
+ */
+public class LIROp0 extends LIRInstruction {
+
+    /**
+     * Creates a LIROp0 instruction.
+     *
+     * @param opcode the opcode of the new instruction
+     */
+    public LIROp0(LIROpcode opcode) {
+        this(opcode, CiValue.IllegalValue);
+    }
+
+    /**
+     * Creates a LIROp0 instruction.
+     *
+     * @param opcode the opcode of the new instruction
+     * @param result the result operand to the new instruction
+     */
+    public LIROp0(LIROpcode opcode, CiValue result) {
+        this(opcode, result, null);
+    }
+
+    /**
+     * Creates a LIROp0 instruction.
+     *
+     * @param opcode the opcode of the new instruction
+     * @param result the result operand to the new instruction
+     * @param info used to emit debug information associated to this instruction
+     */
+    public LIROp0(LIROpcode opcode, CiValue result, LIRDebugInfo info) {
+        super(opcode, result, info, false);
+        assert isInRange(opcode, LIROpcode.BeginOp0, LIROpcode.EndOp0) : "Opcode " + opcode + " is invalid for a LIROP0 instruction";
+    }
+
+    /**
+     * Emit assembly code for this instruction.
+     * @param masm the target assembler
+     */
+    @Override
+    public void emitCode(LIRAssembler masm) {
+        masm.emitOp0(this);
+    }
+}