Merge pull request !607 from fary86/optimize_flow_of_exporting_onnx_model

Merge pull request !627 from fary86/fix_glog_default_path_is_tmp

Merge pull request !554 from huanghui/fix_derelu_fusion_pass

Merge pull request !492 from YuJianfeng/allgather

Merge pull request !615 from Simson/push-to-opensource

Merge pull request !504 from candanzg/tensor_assign_with_slice

Signed-off-by: candanzg <zhangshucheng@huawei.com>

Merge pull request !555 from chenjianping/fix-windows-bug

Merge pull request !472 from YuJianfeng/master

Merge pull request !478 from fary86/fix_log_and_ir_issues

Merge pull request !261 from wenkai/histogram_dev3cp

Merge pull request !340 from ougongchang/master

clean clang format errors and cpplint errors

add some test cases for histogram summary operator

Merge pull request !400 from amongo/FixMathOps

format code

remove test case for fp64

add back scalar manipulation

remove save graph

Merge pull request !317 from huanghui/derelu_fusion_pass

Merge pull request !285 from ZhangQinghua/master

Merge pull request !346 from laiyongqiang/develop

Merge pull request !329 from chenjianping/building-on-windows-2

Merge pull request !282 from chujinjin/fix_pynative_conv_pf

Merge pull request !25 from zhangbuxue/unfold-develop

Merge pull request !325 from fary86/fix-batchnorm-doc-and-slog-path-duplication

Merge pull request !306 from limingqi107/master

twice in log

Merge pull request !274 from ZPaC/gpu-backend-supports-multiple-streams

2.GPU commnication stream and compute stream overlap.

Merge pull request !291 from caifubi/dev-getnext-mem-reuse-off