--- /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/stackslotalloc/StackSlotAllocatorUtil.java	2017-02-15 17:06:02.327050996 -0800
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2014, 2016, 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.stackslotalloc;
+
+import org.graalvm.compiler.debug.Debug;
+import org.graalvm.compiler.debug.DebugCounter;
+import org.graalvm.compiler.lir.VirtualStackSlot;
+import org.graalvm.compiler.lir.gen.LIRGenerationResult;
+
+import jdk.vm.ci.code.StackSlot;
+
+/**
+ * A stack slot allocator is responsible for translating {@link VirtualStackSlot virtual} stack
+ * slots into {@link StackSlot real} stack slots. This includes changing all occurrences of
+ * {@link VirtualStackSlot} in the {@link LIRGenerationResult#getLIR() LIR} to {@link StackSlot}.
+ */
+public final class StackSlotAllocatorUtil {
+    /**
+     * The number of allocated stack slots.
+     */
+    public static DebugCounter allocatedSlots = Debug.counter("StackSlotAllocator[allocatedSlots]");
+    /**
+     * The number of reused stack slots.
+     */
+    public static DebugCounter reusedSlots = Debug.counter("StackSlotAllocator[reusedSlots]");
+    /**
+     * The size (in bytes) required for all allocated stack slots. Note that this number corresponds
+     * to the actual frame size and might include alignment.
+     */
+    public static DebugCounter allocatedFramesize = Debug.counter("StackSlotAllocator[AllocatedFramesize]");
+    /** The size (in bytes) required for all virtual stack slots. */
+    public static DebugCounter virtualFramesize = Debug.counter("StackSlotAllocator[VirtualFramesize]");
+}