Merge pull request !2631 from amongo/FixExpandDimsOps

Merge pull request !2651 from Margaret_wangrui/copy_ref_map_to_final_graph_in_RecurseCompileGraph

Merge pull request !2625 from Margaret_wangrui/review_code_second

Merge pull request !2635 from zhaozhenlong/fix-issue-ssim-limit-input-dtype

Merge pull request !2626 from zhoufeng/modify-long-description-format

Merge pull request !2560 from limingqi107/master

add comment for control_depend

Merge pull request !2527 from liuwenhao/master

Merge pull request !2621 from lilei/fix

Merge pull request !2585 from Giancarlo/remove_transformfunc

Merge pull request !2616 from ougongchang/fix_collect_freq

Merge pull request !2506 from xianwz/master

Merge pull request !2502 from geekun/master_fix_issue

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

Merge pull request !2595 from zhoufeng/assign-order-before-jump

Merge pull request !1811 from caifubi/handle-contrl-depend-with-virtual-node

Merge pull request !2620 from wenchunjiang/fix_control_sink_bug

Merge pull request !2612 from changzherui/del_test

Merge pull request !2610 from yanghaitao/yht_fastrcnn

Merge pull request !2611 from dinghao/master

Before, we only decide whether to collect data by current step,
it will not work well in dataset sink mode, so we check to see
if it's a dataset sink mode, and decide whether to collect data.

Merge pull request !2286 from gziyan/optimizer_parallel

Merge pull request !2608 from yao_yf/reshape_cost_dont_create_group

Merge pull request !2399 from ghzl/fix-params-keyerror-in-group-params

Merge pull request !2561 from dinghao/master

Merge pull request !2554 from caojian05/mindspore_master_bugfix