--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/GraalCompiler/src/com/sun/c1x/lir/LIRBlock.java	Wed Apr 27 11:50:44 2011 +0200
@@ -0,0 +1,82 @@
+/*
+ * 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.lir;
+
+import com.sun.c1x.alloc.*;
+import com.sun.c1x.asm.*;
+import com.sun.cri.ci.*;
+
+/**
+ * The {@code LIRBlock} class definition.
+ *
+ * @author Ben L. Titzer
+ */
+public final class LIRBlock {
+
+    public LIRBlock() {
+    }
+
+    public final Label label = new Label();
+    private LIRList lir;
+
+    /**
+     * Bit map specifying which {@linkplain OperandPool operands} are live upon entry to this block.
+     * These are values used in this block or any of its successors where such value are not defined
+     * in this block.
+     * The bit index of an operand is its {@linkplain OperandPool#operandNumber(com.sun.cri.ci.CiValue) operand number}.
+     */
+    public CiBitMap liveIn;
+
+    /**
+     * Bit map specifying which {@linkplain OperandPool operands} are live upon exit from this block.
+     * These are values used in a successor block that are either defined in this block or were live
+     * upon entry to this block.
+     * The bit index of an operand is its {@linkplain OperandPool#operandNumber(com.sun.cri.ci.CiValue) operand number}.
+     */
+    public CiBitMap liveOut;
+
+    /**
+     * Bit map specifying which {@linkplain OperandPool operands} are used (before being defined) in this block.
+     * That is, these are the values that are live upon entry to the block.
+     * The bit index of an operand is its {@linkplain OperandPool#operandNumber(com.sun.cri.ci.CiValue) operand number}.
+     */
+    public CiBitMap liveGen;
+
+    /**
+     * Bit map specifying which {@linkplain OperandPool operands} are defined/overwritten in this block.
+     * The bit index of an operand is its {@linkplain OperandPool#operandNumber(com.sun.cri.ci.CiValue) operand number}.
+     */
+    public CiBitMap liveKill;
+
+    public int firstLirInstructionID;
+    public int lastLirInstructionID;
+    public int exceptionHandlerPCO;
+
+    public LIRList lir() {
+        return lir;
+    }
+
+    public void setLir(LIRList lir) {
+        this.lir = lir;
+    }
+}