Merge pull request !4448 from sunsuodong/add_testcase

add join for ref

adjust env eliminate to eliminate all env ops

add partial app cache

resolve while endless

fix env eliminate

support for "for while" cases

fix join shape error

Merge pull request !4396 from Kang/opt

Merge pull request !4399 from ling/fc

Merge pull request !4288 from liuchao/allocator

fixed some bugs

fixed cpplint

fix cpplint

Merge pull request !3769 from Alexey_Shevlyakov/ColorOp

Merge pull request !4446 from chenzupeng/master-lite

Merge pull request !4337 from chenzhongming/lite

Merge pull request !4188 from riemann_penn/fix_switch_layer_sigle_prim_cell

Merge pull request !4460 from zongha/master

Merge pull request !4441 from yangruoqi713/lite

Merge pull request !4382 from zhangzheng/master

Merge pull request !4449 from fuzhiye/tmp

2.fix conv 3x3 bug

Merge pull request !4461 from chenjianping/lite_dev

Merge pull request !4284 from yao_yf/remove_to_full_tensor_and_load_inputs_in_exexute_stage

Merge pull request !4443 from vlne-v1/I1RDCY-slice_shape_update_initializer

Merge pull request !4451 from yankai10/merge

Merge pull request !4402 from luoyang/c-api-pyfunc

2nd for update thor bert

Merge pull request !4444 from JoyLvliang/enlarge-time-threshold-of-resnet50-st-in-pynative

Merge pull request !4389 from yanghaitao/yht_fix_doc2

Merge pull request !4429 from ZhangQinghua/master1

Merge pull request !4450 from ghzl/adjust-test

Signed-off-by: zjun <zhangjun0@huawei.com>

Merge pull request !4387 from 徐安越/master

Merge pull request !4453 from yangruoqi713/dw_int8

Merge pull request !4437 from 张学同/to_merge