- It provides a unified style to express graph and kernel for user.
- It provides a unified IR to represent graph and kernel for developer.
- It breaks the boundary between graph and kernel.
- It provides more opportunities to do compile optimization.

Merge pull request !2415 from Kang/master

Merge pull request !2231 from yanghaitao/yht_get_num_samples

Merge pull request !1628 from 刘崇鸣/model_zoo_mass

Merge pull request !2397 from zhaoting/ResNet50_st

Merge pull request !2356 from zhaozhenlong/fix-issues-broadcastto-same-shape

Merge pull request !2380 from xiefangqi/xfq_fix_coco_issue_01

Merge pull request !2381 from liangzelang/dev

Merge pull request !2384 from YuJianfeng/split

Merge pull request !2402 from liuwenhao/master

Merge pull request !2396 from jjfeing/master

Merge pull request !2391 from BowenK/op_elim

Merge pull request !2378 from flywind/fix_yolov3_bug

Merge pull request !2394 from kisnwang/add-cpu-outputsync

Merge pull request !2056 from zhoufeng/enable-new-control-sink

make unsupported shape error info explicit

Merge pull request !2406 from jiangjinsheng/issue_fix4

Merge pull request !2157 from hangq/master

Merge pull request !2260 from liyanliu96/liyan

Merge pull request !2366 from Chong/interface

Merge pull request !2336 from huanghui/insert-memcpy-async-pass

Merge pull request !2388 from VectorSL/bert-eval

Merge pull request !2143 from ms_yan/del_storage_c++

Merge pull request !2387 from wukesong/cpu-lenet-sink-true

Merge pull request !2383 from Margaret_wangrui/control_sink_summary

Merge pull request !2060 from amongo/SupportPynativeSetItem

Merge pull request !2338 from chenweifeng/nezha

Merge pull request !2395 from yanghaoran/master

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

Merge pull request !2313 from caifubi/save-profiling-point

Merge pull request !2365 from wangqiuliang/fix-parameter-cast-issue