--- /dev/null	2017-01-22 10:16:57.869617664 -0800
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/framemap/VirtualStackSlotRange.java	2017-02-15 17:05:49.433497629 -0800
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2014, 2015, 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 org.graalvm.compiler.lir.framemap;
+
+import java.util.BitSet;
+
+import org.graalvm.compiler.core.common.LIRKind;
+import org.graalvm.compiler.lir.VirtualStackSlot;
+
+import jdk.vm.ci.code.TargetDescription;
+
+/**
+ * Represents a {@link #getSlots() numbered} range of {@link VirtualStackSlot virtual stack slot} of
+ * size {@link TargetDescription#wordSize}.
+ */
+public class VirtualStackSlotRange extends VirtualStackSlot {
+
+    private final BitSet objects;
+    private final int slots;
+
+    public VirtualStackSlotRange(int id, int slots, BitSet objects, LIRKind kind) {
+        super(id, kind);
+        this.slots = slots;
+        this.objects = (BitSet) objects.clone();
+    }
+
+    public int getSlots() {
+        return slots;
+    }
+
+    public BitSet getObjects() {
+        return (BitSet) objects.clone();
+    }
+
+}