--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/Compiler/src/com/sun/c1x/lir/LIROp1.java	Wed Apr 27 11:43:22 2011 +0200
@@ -0,0 +1,177 @@
+/*
+ * 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.c1x.util.*;
+import com.sun.cri.ci.*;
+
+/**
+ * The {@code LIROp1} class definition. The LIROp1 instruction has only one input operand.
+ *
+ * @author Marcelo Cintra
+ */
+public class LIROp1 extends LIRInstruction {
+
+    public enum LIRMoveKind {
+        Normal, Volatile, Unaligned
+    }
+
+    public final CiKind kind;          // the operand type
+    public final LIRMoveKind moveKind; // flag that indicate the kind of move
+
+    /**
+     * Constructs a new LIROp1 instruction.
+     *
+     * @param opcode the instruction's opcode
+     * @param opr the first input operand
+     * @param result the operand that holds the result of this instruction
+     * @param kind the kind of this instruction
+     * @param info the object holding information needed to emit debug information
+     */
+    public LIROp1(LIROpcode opcode, CiValue opr, CiValue result, CiKind kind, LIRDebugInfo info) {
+        super(opcode, result, info, false, 0, 0, opr);
+        this.kind = kind;
+        this.moveKind = LIRMoveKind.Normal;
+        assert isInRange(opcode, LIROpcode.BeginOp1, LIROpcode.EndOp1) : "The " + opcode + " is not a valid LIROp1 opcode";
+    }
+
+    /**
+     * Constructs a new LIROp1 instruction.
+     *
+     * @param opcode the instruction's opcode
+     * @param opr the first input operand
+     * @param result the operand that holds the result of this instruction
+     * @param kind the kind of this instruction
+     */
+    public LIROp1(LIROpcode opcode, CiValue opr, CiValue result, CiKind kind) {
+        this(opcode, opr, result, kind, null);
+    }
+
+    /**
+     * Constructs a new LIROp1 instruction.
+     *
+     * @param opcode the instruction's opcode
+     * @param opr the first input operand
+     * @param result the operand that holds the result of this instruction
+     */
+    public LIROp1(LIROpcode opcode, CiValue opr, CiValue result) {
+        this(opcode, opr, result, CiKind.Illegal);
+    }
+
+    /**
+     * Constructs a new LIROp1 instruction.
+     *
+     * @param opcode the instruction's opcode
+     * @param opr the first input operand
+     */
+    public LIROp1(LIROpcode opcode, CiValue opr) {
+        this(opcode, opr, CiValue.IllegalValue);
+    }
+
+    /**
+     * Constructs a new LIROp1 instruction.
+     *
+     * @param moveKind the kind of move the instruction represents
+     * @param operand the single input operand
+     * @param result the operand that holds the result of this instruction
+     * @param kind the kind of this instruction
+     * @param info the object holding information needed to emit debug information
+     */
+    public LIROp1(LIRMoveKind moveKind, CiValue operand, CiValue result, CiKind kind, LIRDebugInfo info) {
+        super(LIROpcode.Move, result, info, false, 0, 0, operand);
+        this.kind = kind;
+        this.moveKind = moveKind;
+    }
+
+    /**
+     * Constructs a new LIROp1 instruction.
+     *
+     * @param opcode the instruction's opcode
+     * @param opr the first input operand
+     * @param info the object holding information needed to emit debug information
+     */
+    public LIROp1(LIROpcode opcode, CiValue opr, LIRDebugInfo info) {
+        super(opcode, CiValue.IllegalValue, info, false, 0, 0, opr);
+        this.kind = CiKind.Illegal;
+        this.moveKind = LIRMoveKind.Normal;
+        assert isInRange(opcode, LIROpcode.BeginOp1, LIROpcode.EndOp1) : "The " + opcode + " is not a valid LIROp1 opcode";
+    }
+
+    /**
+     * Gets the input operand of this instruction.
+     *
+     * @return opr the input operand.
+     */
+    public CiValue operand() {
+        return operand(0);
+    }
+
+    /**
+     * Gets the kind of move of this instruction.
+     *
+     * @return flags the constant that represents the move kind.
+     */
+    public LIRMoveKind moveKind() {
+        assert code == LIROpcode.Move : "The opcode must be of type LIROpcode.Move in LIROp1";
+        return moveKind;
+    }
+
+    @Override
+    public void emitCode(LIRAssembler masm) {
+        masm.emitOp1(this);
+    }
+
+    @Override
+    public String name() {
+        if (code == LIROpcode.Move) {
+            switch (moveKind()) {
+                case Normal:
+                    return "move";
+                case Unaligned:
+                    return "unaligned move";
+                case Volatile:
+                    return "volatile_move";
+                default:
+                    throw Util.shouldNotReachHere();
+            }
+        } else {
+            return super.name();
+        }
+    }
+
+    @Override
+    public boolean verify() {
+        switch (code) {
+            case Move:
+                assert (operand().isLegal()) && (result().isLegal()) : "Operand and result must be valid in a LIROp1 move instruction.";
+                break;
+            case NullCheck:
+                assert operand().isVariableOrRegister() : "Operand must be a register in a LIROp1 null check instruction.";
+                break;
+            case Return:
+                assert operand().isVariableOrRegister() || operand().isIllegal() : "Operand must be (register | illegal) in a LIROp1 return instruction.";
+                break;
+        }
+        return true;
+    }
+}