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)
```

From: @liu_xiao_93
Reviewed-by: 
Signed-off-by:

fix bug of nz filter

Merge pull request !5875 from liuxiao93/IFMR-OpenSource-new-backend

(cherry picked from commit 17a5995e97)

Support Dynamic Shape Aicpu Run Package

adapt tensorengin modify, fix ub fusion

Merge pull request !5197 from lianliguang/master

Signed-off-by: zhoufeng <zhoufeng54@huawei.com>

replace frontend/operator/ops.h in backend with base/core_ops.h as
backend should not use any frontend-only primitive

Signed-off-by: zhoufeng <zhoufeng54@huawei.com>

Merge pull request !3938 from liubuyu/master

Merge pull request !3987 from zhoufeng/graph-compile-performace

Signed-off-by: zhoufeng <zhoufeng54@huawei.com>

Merge pull request !3425 from fangzehua/avgpool

Merge pull request !3324 from fangzehua/reduce_any