Merge pull request !705 from chujinjin/add_pynative_cache

Merge pull request !751 from zjun/remove_enable_hccl

Merge pull request !700 from penn/validate_bprop_rules

Merge pull request !731 from fary86/remove_extra_empty_string_in_log

Merge pull request !723 from Simson/push-to-opensource

Merge pull request !719 from fary86/fix_error_type_of_input_not_tensor

Merge pull request !315 from jinyaohui/init_dataset

Merge pull request !494 from zhoufeng/cmake-sub

Merge pull request !628 from zhangbuxue/fix_example_for_TruncatedNormal

Merge pull request !586 from lirongzhen1/allreduce_fusion

Merge pull request !264 from xychow/remove-unnecessary-cache-and-add-cache

Merge pull request !607 from fary86/optimize_flow_of_exporting_onnx_model

add cache for PythonPrimEvaluator. Be careful that
 the infer function of PythonPrimitive in python code should
 be idempotent.

Merge pull request !573 from seatea/fix-parse-attribute-bug

Merge pull request !504 from candanzg/tensor_assign_with_slice

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

Merge pull request !340 from ougongchang/master

Merge pull request !420 from amongo/FixMixedPrecisionForConstParam

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

fix pylint

Merge pull request !286 from wangqiuliang/resolve-pynative-operator-issue

Merge pull request !296 from StrawNoBerry/ExcludeFV

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

Signed-off-by: Hoai Linh Tran h00472437 <hoai.linh.tran@huawei.com>

Add optimizer checking: For a group of passes in "optimizer", if flagged then it will check and collect the newly generated nodes without types (i.e. abstract() == nullptr).
Before calling Renormalize(), the optimizer will check if there is any node needed retyping. If not the Renormalize pass will not be called.
Add checking for non-null abstract but still needs renorm;
Add flags to Substitution to help watching Renormalize

Simpler pass result checker, change Bool to Enum type