--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/Compiler/src/com/sun/c1x/ir/Constant.java	Wed Apr 27 11:43:22 2011 +0200
@@ -0,0 +1,161 @@
+/*
+ * Copyright (c) 2009, 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.sun.c1x.ir;
+
+import static com.sun.c1x.C1XCompilation.*;
+
+import com.sun.c1x.debug.*;
+import com.sun.cri.ci.*;
+import com.sun.cri.ri.*;
+
+/**
+ * The {@code Constant} instruction represents a constant such as an integer value,
+ * long, float, object reference, address, etc.
+ *
+ * @author Ben L. Titzer
+ */
+public final class Constant extends Instruction {
+
+    public final CiConstant value;
+
+    /**
+     * Constructs a new instruction representing the specified constant.
+     * @param value the constant
+     */
+    public Constant(CiConstant value) {
+        super(value.kind.stackKind());
+        this.value = value;
+        initFlag(Value.Flag.NonNull, value.isNonNull());
+    }
+
+    @Override
+    public void accept(ValueVisitor v) {
+        v.visitConstant(this);
+    }
+
+    /**
+     * Creates an instruction for a double constant.
+     * @param d the double value for which to create the instruction
+     * @return an instruction representing the double
+     */
+    public static Constant forDouble(double d) {
+        return new Constant(CiConstant.forDouble(d));
+    }
+
+    /**
+     * Creates an instruction for a float constant.
+     * @param f the float value for which to create the instruction
+     * @return an instruction representing the float
+     */
+    public static Constant forFloat(float f) {
+        return new Constant(CiConstant.forFloat(f));
+    }
+
+    /**
+     * Creates an instruction for an long constant.
+     * @param i the long value for which to create the instruction
+     * @return an instruction representing the long
+     */
+    public static Constant forLong(long i) {
+        return new Constant(CiConstant.forLong(i));
+    }
+
+    /**
+     * Creates an instruction for an integer constant.
+     * @param i the integer value for which to create the instruction
+     * @return an instruction representing the integer
+     */
+    public static Constant forInt(int i) {
+        return new Constant(CiConstant.forInt(i));
+    }
+
+    /**
+     * Creates an instruction for a boolean constant.
+     * @param i the boolean value for which to create the instruction
+     * @return an instruction representing the boolean
+     */
+    public static Constant forBoolean(boolean i) {
+        return new Constant(CiConstant.forBoolean(i));
+    }
+
+    /**
+     * Creates an instruction for an address (jsr/ret address) constant.
+     * @param i the address value for which to create the instruction
+     * @return an instruction representing the address
+     */
+    public static Constant forJsr(int i) {
+        return new Constant(CiConstant.forJsr(i));
+    }
+
+    /**
+     * Creates an instruction for an object constant.
+     * @param o the object value for which to create the instruction
+     * @return an instruction representing the object
+     */
+    public static Constant forObject(Object o) {
+        return new Constant(CiConstant.forObject(o));
+    }
+
+    /**
+     * Creates an instruction for a word constant.
+     * @param val the word value for which to create the instruction
+     * @return an instruction representing the word
+     */
+    public static Constant forWord(long val) {
+        return new Constant(CiConstant.forWord(val));
+    }
+
+    @Override
+    public String toString() {
+        return super.toString() + "(" + value + ")";
+    }
+
+    @Override
+    public int valueNumber() {
+        return 0x50000000 | value.hashCode();
+    }
+
+    @Override
+    public boolean valueEqual(Instruction i) {
+        return i instanceof Constant && ((Constant) i).value.equivalent(this.value);
+    }
+
+    @Override
+    public RiType declaredType() {
+        RiRuntime runtime = compilation().runtime;
+        if (kind.isPrimitive()) {
+            runtime.asRiType(kind);
+        }
+        return runtime.getTypeOf(asConstant());
+    }
+
+    @Override
+    public RiType exactType() {
+        return declaredType();
+    }
+
+    @Override
+    public void print(LogStream out) {
+        out.print(value.valueString());
+    }
+}