Merge pull request !1945 from vlne-v1/I1JXUP-resnet50-thor-assign-fail

This reverts commit 705c71a257.

Merge pull request !1785 from lianliguang/add-dropout-kernel-special-kernel-select-rules

Merge pull request !1794 from dengwentao/cpu_op

* add infer_value for common math ops
* convert constant bool tensor to bool value

* do not infer value when encounter 0 as division

for while condition, do not unrool if condition is a tensor

Merge pull request !1578 from gengdongjie/master

This reverts commit 3db8cfa54f.

Merge pull request !1160 from wangqiuliang/add-backward-hook-in-pynative-mode

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

fix DiagPart constant folding issue

fix argmin output type check

fix atan2 doc error

fix remove FusedBatchNorm and its grad

This reverts commit ea6958c50a.

Merge pull request !340 from ougongchang/master

Merge pull request !246 from vlne-v1/I1E3PI-opt-pass-adjust-allreduce-apply-weight-decy-seq

clean clang format errors and cpplint errors

add some test cases for histogram summary operator

use unpack graph primitive instead

add testcases for all grad interface

remove debug log

format code

remove dumpfuncgraph

resolve clang-format

resolve reviews

resolve cpplint

fix review

Signed-off-by: leonwanghui <leon.wanghui@huawei.com>