--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/GraalCompiler/src/com/sun/c1x/ir/StoreIndexed.java	Wed Apr 27 11:50:44 2011 +0200
@@ -0,0 +1,113 @@
+/*
+ * 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.ir.Value.Flag.*;
+
+import com.sun.c1x.debug.*;
+import com.sun.c1x.value.*;
+import com.sun.cri.ci.*;
+
+/**
+ * The {@code StoreIndexed} instruction represents a write to an array element.
+ *
+ * @author Ben L. Titzer
+ */
+public final class StoreIndexed extends AccessIndexed {
+
+    /**
+     * The value to store.
+     */
+    Value value;
+
+    /**
+     * Creates a new StoreIndexed instruction.
+     * @param array the instruction producing the array
+     * @param index the instruction producing the index
+     * @param length the instruction producing the length
+     * @param elementType the element type
+     * @param value the value to store into the array
+     * @param stateBefore the state before executing this instruction
+     */
+    public StoreIndexed(Value array, Value index, Value length, CiKind elementType, Value value, FrameState stateBefore) {
+        super(CiKind.Void, array, index, length, elementType, stateBefore);
+        this.value = value;
+        setFlag(Flag.LiveStore);
+        if (elementType != CiKind.Object) {
+            setFlag(Flag.NoWriteBarrier);
+        }
+    }
+
+    /**
+     * Gets the instruction that produces the value that is to be stored into the array.
+     * @return the value to write into the array
+     */
+    public Value value() {
+        return value;
+    }
+
+    /**
+     * Checks if this instruction needs a write barrier.
+     * @return {@code true} if this instruction needs a write barrier
+     */
+    public boolean needsWriteBarrier() {
+        return !checkFlag(Flag.NoWriteBarrier);
+    }
+
+    /**
+     * Checks if this instruction needs a store check.
+     * @return {@code true} if this instruction needs a store check
+     */
+    public boolean needsStoreCheck() {
+        return !checkFlag(Flag.NoStoreCheck);
+    }
+
+    public void eliminateStoreCheck() {
+        clearRuntimeCheck(NoStoreCheck);
+    }
+
+    /**
+     * Checks whether this instruction can cause a trap.
+     * @return {@code true} if this instruction can cause a trap
+     */
+    @Override
+    public boolean canTrap() {
+        return super.canTrap() || needsStoreCheck();
+    }
+
+    @Override
+    public void inputValuesDo(ValueClosure closure) {
+        super.inputValuesDo(closure);
+        value = closure.apply(value);
+    }
+
+    @Override
+    public void accept(ValueVisitor v) {
+        v.visitStoreIndexed(this);
+    }
+
+    @Override
+    public void print(LogStream out) {
+        out.print(array()).print('[').print(index()).print("] := ").print(value()).print(" (").print(kind.typeChar).print(')');
+    }
+}