--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/Compiler/src/com/sun/c1x/ir/LoadField.java	Wed Apr 27 11:43:22 2011 +0200
@@ -0,0 +1,106 @@
+/*
+ * 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 com.sun.c1x.*;
+import com.sun.c1x.debug.*;
+import com.sun.c1x.value.*;
+import com.sun.cri.ci.*;
+import com.sun.cri.ri.*;
+
+/**
+ * The {@code LoadField} instruction represents a read of a static or instance field.
+ *
+ * @author Ben L. Titzer
+ */
+public final class LoadField extends AccessField {
+
+    /**
+     * Creates a new LoadField instance.
+     * @param object the receiver object
+     * @param field the compiler interface field
+     * @param isStatic indicates if the field is static
+     * @param stateBefore the state before the field access
+     * @param isLoaded indicates if the class is loaded
+     */
+    public LoadField(Value object, RiField field, boolean isStatic, FrameState stateBefore, boolean isLoaded) {
+        super(field.kind().stackKind(), object, field, isStatic, stateBefore, isLoaded);
+    }
+
+    /**
+     * Gets the declared type of the field being accessed.
+     * @return the declared type of the field being accessed.
+     */
+    @Override
+    public RiType declaredType() {
+        return field().type();
+    }
+
+    /**
+     * Gets the exact type of the field being accessed. If the field type is
+     * a primitive array or an instance class and the class is loaded and final,
+     * then the exact type is the same as the declared type. Otherwise it is {@code null}
+     * @return the exact type of the field if known; {@code null} otherwise
+     */
+    @Override
+    public RiType exactType() {
+        RiType declaredType = declaredType();
+        return declaredType.isResolved() ? declaredType.exactType() : null;
+    }
+
+    @Override
+    public void accept(ValueVisitor v) {
+        v.visitLoadField(this);
+    }
+
+    /**
+     * Gets a constant value to which this load can be reduced.
+     *
+     * @return {@code null} if this load cannot be reduced to a constant
+     */
+    public CiConstant constantValue() {
+        if (!C1XOptions.CanonicalizeConstantFields) {
+            return null;
+        }
+        if (isStatic()) {
+            return field.constantValue(null);
+        } else if (object().isConstant()) {
+            CiConstant cons = field.constantValue(object().asConstant());
+            if (cons != null) {
+                return cons;
+            }
+            return cons;
+        }
+        return null;
+    }
+
+    @Override
+    public void print(LogStream out) {
+        out.print(object()).
+        print(".").
+        print(field.name()).
+        print(" [field: ").
+        print(CiUtil.format("%h.%n:%t", field, false)).
+        print("]");
+    }
+}