This reverts commit b09d411dc4.

add AlltoAll and NeighborExchange as interface

- Fix the key generating.
- Distinguish the executors.

Merge pull request !19000 from yuchaojie/ir_fusion2

This reverts commit b077aa1cab.

Revert "[feat] [assistant] [I3T96X] add new Dataset operator LibriSpeechDataset"

This reverts commit 4e6f7dc97d.

delete pass_registry_test.cc

comment  hiai_nlu_model_multi.pb related  line

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

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

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: @wangnan39
Reviewed-by: 
Signed-off-by:

Revive tests in lib_test

Code cleaning

Merge pull request !3198 from yanghaoran/code_sync_0718

Merge pull request !3114 from riemann_penn/coo_tensor

Merge pull request !265 from yanghaoran/incubator

Merge pull request !2970 from panbingao/master