Merge pull request !2478 from BowenK/python_pass_clean

Merge pull request !2804 from liuxiao93/ops-for-VM

Merge pull request !2565 from ddwolf/add_case_for_precisoin_of_bert

Merge pull request !2806 from zhoufeng/process-empty-graph

Merge pull request !2802 from chentingting/fix_import_path_error

1. add case to guard precision
2. fix a shape bug
3. fix a funcGraph bug

Merge pull request !2770 from LiHongzhang/capture_time

Merge pull request !2785 from LiHongzhang/atexit_close

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

Merge pull request !2781 from hanjun996/master

Merge pull request !2801 from chenzhongming/quant_script

Merge pull request !2718 from chenzhongming/master

Merge pull request !2796 from guozhijian/del_zhwiki_CLUE_preprocess_script

Merge pull request !2789 from heleiwang/support_pubmed

Merge pull request !2799 from leiyuning/master

Merge pull request !2800 from zhoufeng/fix-nested-while

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

Merge pull request !2787 from zhaozhenlong/op/scatter-div-mul-vm

Merge pull request !2794 from zhouyuanshen/master

Merge pull request !2700 from chujinjin/change_pynative_batchnorm_same_as_graph_mode

Merge pull request !2750 from TronZhang/clean_bot

Merge pull request !2780 from Margaret_wangrui/handle_partial

Merge pull request !2792 from yanghaitao/yht_fastrcnn_accu

Merge pull request !2763 from yuchaojie/transformer

Merge pull request !2777 from chenweifeng/lstm_performace

Merge pull request !1934 from ZPaC/add-pslite-dependency

Merge pull request !2788 from yangzhenzhang/delete-shape-validation

Merge pull request !2783 from dinghao/master

Merge pull request !2782 from zhoufeng/control-sink-test

Merge pull request !2786 from Kang/optimization