Merge pull request !2739 from chenzhongming/diff_0.5_master

Merge pull request !2740 from chenzhongming/unroll

Merge pull request !2729 from z00378171/r0.5

Merge pull request !2727 from yangyongjie/r0.5

Merge pull request !2721 from yuchaojie/r0.5

Merge pull request !2731 from yangjie159/r0.5

Merge pull request !2712 from zhoufeng/revert-assign-node-order

Merge pull request !2714 from jinyaohui/print

Merge pull request !2709 from chenfei_mindspore/parameter-should-not-act-as-the-second-input-of-control-depend-when-depend-mode-is-0

Merge pull request !2704 from chenzhongming/r0.5

This reverts commit 8628b898.

if parameter is the second input of control depend and depend mode is 0,this control relation is invalid

Merge pull request !2693 from panbingao/r0.5

Merge pull request !2695 from TronZhang/akg_r0.5

Merge pull request !2691 from hexia/deal-switch-input

Merge pull request !2678 from zhangbuxue/Add_typeid_to_type_conversion_scene

Merge pull request !2689 from limingqi107/cast_pynative

Merge pull request !2646 from JoyLvliang/r0.5

Merge pull request !2628 from gengdongjie/r0.5

Merge pull request !2670 from TronZhang/akg_default_r0.5

Merge pull request !2685 from VectorSL/r0.5

Merge pull request !2686 from yanghaoran/r0.5

Merge pull request !2679 from wenchunjiang/fix_if_cascad_if_bug

Merge pull request !2653 from linqingke/mass_r0.5

Merge pull request !2656 from guozhijian/sync_fix_tfrecord_to_mr_para_check

Merge pull request !2672 from lirongzhen1/r0.5