Merge pull request !1983 from JesseKLee/sampler

support tensor slice using constexpr

remove tensorslice metagraph

add pynative testcases

Merge pull request !1913 from xiefangqi/xfq_support_coco

Merge pull request !1868 from huanghui/insert-memcpy-async-pass

Merge pull request !1944 from wangqiuliang/move-hook-function-to-primitivepy

Merge pull request !1928 from yoonlee666/deletereshape

2. mod cora and citeseer conversion script

Merge pull request !1957 from jiangjinsheng/issue_merge

Merge pull request !1873 from yanghaoran/master

Merge pull request !1874 from h.farahat/string_tensor_updates

- Support accepting Numpy of str as input
- Support batching strings
- Core logic of batch&pad is static
- Make Pad a utility function

This reverts commit 705c71a257.

Merge pull request !1911 from lianliguang/add-a-function-to-charge-the-node-input-or-output-if-is-a-scalar

Merge pull request !1774 from liyong126/mindrecord_padded_sample

Merge pull request !1615 from amongo/GetBoolValueFromConstantTensor

Merge pull request !1767 from huanghui/LayerNormGrad-split-pass

Merge pull request !1808 from Jamie/numsamples

* 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

updates

more update

more work

more fixin

post rebase updates

clang formatting

code review recovery

ci fixes

updates

update

update

update

Merge pull request !1777 from BowenK/master

Merge pull request !1696 from huanghui/TMP

Merge pull request !1532 from jinyaohui/pylint1

Merge pull request !1692 from meixiaowei/master

Merge pull request !1666 from huanghui/AdamApplyOneWithDecay-fusion-pass

Merge pull request !1578 from gengdongjie/master

Merge pull request !1568 from seatea/fix-pylint-warning