--- /dev/null	2016-05-31 09:42:47.975716356 -0700
+++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/stackslotalloc/StackIntervalDumper.java	2016-12-09 00:54:34.573768880 -0800
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2015, 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.stackslotalloc;
+
+import org.graalvm.compiler.lir.VirtualStackSlot;
+import org.graalvm.compiler.lir.debug.IntervalDumper;
+
+import jdk.vm.ci.meta.Value;
+
+class StackIntervalDumper implements IntervalDumper {
+    private final StackInterval[] intervals;
+
+    StackIntervalDumper(StackInterval[] intervals) {
+        this.intervals = intervals;
+    }
+
+    @Override
+    public void visitIntervals(IntervalVisitor visitor) {
+        for (StackInterval interval : intervals) {
+            if (interval != null) {
+                printInterval(interval, visitor);
+            }
+        }
+    }
+
+    private static void printInterval(StackInterval interval, IntervalVisitor visitor) {
+        Value hint = interval.locationHint() != null ? interval.locationHint().getOperand() : null;
+        VirtualStackSlot operand = interval.getOperand();
+        String type = operand.getValueKind().getPlatformKind().toString();
+        visitor.visitIntervalStart(operand, operand, interval.location(), hint, type);
+
+        // print ranges
+        visitor.visitRange(interval.from(), interval.to());
+
+        // no use positions
+
+        visitor.visitIntervalEnd("NOT_SUPPORTED");
+    }
+
+}