Merge pull request !2809 from zhangbuxue/support_Python_built-in_functions_enumerate

Merge pull request !2847 from Kang/master

This reverts commit 4949f6ca39.

Merge pull request !260 from wuxuejian/grad_embeddinglookup_fix

Merge pull request !2843 from fanglei/trans_shape

Merge pull request !2845 from zhoufeng/empty-graph-dump-ir

Merge pull request !2849 from dinghao/master

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

Merge pull request !2761 from chenfei_mindspore/split-real-inputs-to-reuse-args-and-not-reuse-args

Merge pull request !2837 from yuchaojie/transformer

Merge pull request !2749 from VectorSL/argmaxwithvalue

Add more detail note for SummaryCollector and SummaryRecord,
else if it is used not right, some proplem will be caused.

Merge pull request !2308 from TinaMengtingZhang/unskip-case-random-perspective

Merge pull request !2854 from danishnxt/AugOps-fix

Merge pull request !2774 from Alexey_Shevlyakov/fix_perf_data_test

Merge pull request !2853 from danishnxt/AugOps-fix

Merge pull request !2852 from islam_amin/object_ops_doc

Merge pull request !2830 from JesseKLee/PR2602

insert assign at the end of graph

clear log

clear log 2

handle replace call of unreuse args

handle bug of replace node

Merge pull request !2836 from chenzhongming/master

Merge pull request !2671 from jiangjinsheng/vm_max_pool_ext2

Merge pull request !2846 from jiangjinsheng/issue_fix4

Merge pull request !2844 from kisnwang/optimize-cpu-mem

Merge pull request !2333 from xychow/remove-addnclass-in-opt

Merge pull request !2819 from ghzl/add_group_param_order

Merge pull request !2840 from YuJianfeng/master

Merge pull request !2841 from Kang/master

Merge pull request !2823 from xutianchun/fix_doc

Merge pull request !2820 from zyli2020/refine_mem_swap