From: @yuzhenhua666
Reviewed-by: @c_34,@oacjiewen
Signed-off-by: @c_34

From: @luoyang42
Reviewed-by: @tiancixiao
Signed-off-by:

From: @lixiachen
Reviewed-by: @robingrosman,@nsyca
Signed-off-by: @robingrosman

From: @lixiachen
Reviewed-by: @mikef,@pandoublefeng
Signed-off-by: @pandoublefeng

From: @anancds
Reviewed-by: @limingqi107,@cristoval
Signed-off-by: @cristoval

From: @dinglinhe123
Reviewed-by: @oacjiewen,@c_34
Signed-off-by: @c_34

From: @yuzhenhua666
Reviewed-by: @oacjiewen,@c_34
Signed-off-by: @c_34

From: @VectorSL
Reviewed-by: @limingqi107,@wilfchen,@cristoval
Signed-off-by:

modified:   model_zoo/official/cv/deeplabv3/eval.py

From: @zhao_ting_v
Reviewed-by: @wuxuejian,@oacjiewen
Signed-off-by: @oacjiewen

From: @zhang_yi2020
Reviewed-by: @gemini524,@liangchenghui,@wuxuejian
Signed-off-by: @liangchenghui

From: @VectorSL
Reviewed-by: @kingxian,@chujinjin
Signed-off-by: @kingxian

From: @jiangzg001
Reviewed-by: @liangchenghui,@c_34
Signed-off-by: @c_34

From: @jiangzg001
Reviewed-by: @c_34,@linqingke
Signed-off-by: @c_34

The basic idea is: exploits data dependency to control the execution order
of side-effect operations, and keep the semantics of ANF unchanged.

The ControlDepend primitive is removed and there are two primitives added:

1. UpdateState:
```
  a = Assign(para, value)
```
became:
```
  a = Assign(para, value, u)
  u = UpdateState(u, a)
```

2. Load:
```
  x = Add(para, value)
```
became:
```
  p = Load(para, u)
  x = Add(p, value)
  u = UpdateState(u, p)
```