From 2c4b9d83db9fb81d119e8db09d9d5164a0238b70 Mon Sep 17 00:00:00 2001
From: Yao Zhang <psyyz10@nottingham.ac.uk>
Date: Thu, 12 Oct 2017 00:36:14 +0800
Subject: [PATCH] Add tile operation (#1646)

* Add tile operation

* reset core

* remove unnecessary comments