From b4919497fcd03df3a4dc109e20f07c4b88d17fb9 Mon Sep 17 00:00:00 2001
From: Ian Wong <yiheng.wang@intel.com>
Date: Thu, 14 Sep 2017 13:21:05 +0800
Subject: [PATCH] Support switch and merge operation (#1555)

* Support control flow

* remove loop

* fix unit test

* fix unit test