* update xccl lib
    * use separate streams for compute/comm on XPU
    * add broadcast op to xpu2_op_list

* Compilation optimization

* Add Concat transformer for layout autotune

* feat(): dynamic_to_static support for ipu.

* fix(): format fix.

* fix format

* fix cpplint error

* use phi::errors

* fix format

* fix format

* fix(): add api to restore patched function.

* fix(): identity_loss uses cpu place as expected kernel type.

* doc(): add IPU dy2static related docs.

* fix(): combine test cases.

* fix format

* fix comment

* fix format

* apply comment

* fix compiling

* fix(): align docs.

* fix(): fix identity_loss function docs.

* fix(): adjust mean and sum in identity_loss.

* fix(): minor docs.

* move API to paddle.incubate.identity_loss

* fix UT
Co-authored-by: Nzhaorui chen <zhaoruic@graphcore.ai>

* fix deriv with inplace

* fix double grad bugs

* remove additional file

* fix compat dygraph mode

* fix yaml remove additional yaml

* fix slice double grad error and auto code gen logic error for higher order differentiate

* fix fix_higher_order_deriv

* remove additional include

* fix fix_higher_order_deriv

* fix init()

* delete test_device_context

* replace CPUDeviceContext with CPUContext

* fix test_scalar

* remove dot_op.cc

* fix compile

* record memory and op supplement info

* update

* update

* fix a bug

* fix memory recording

* fix a bug

* update

* update

* fix a bug

* update

* fix a bug

* fix a bug

* fix a bug

* update dygraph record

* add infer shape record

* fix

* fix

* fix

* add comments

* fix a bug

* fix

* fix

* fix starganv2

* fix starganv2 stop_gradient end error

* fix edvr_starganv2

* fix mul kernel to fix optional ddx

* fix typo

* refactor the optional tensor

* remove optiona<MetaTensor> in InferMeta

* fix bug

* fix optional<vector<Tensor>>

* fix bug

* fix rmsprop

* fix amp of eager_gen

* polish code

* fix deleted code

* fix merge conflict

* polish code

* remove is_nullopt_

* fix merge conflict

* fix merge conflict

* refine enforce code

* refine enforce code

* fix compile failed

* fix infrt failed

* opt attr eaque perf

* opt attr select code

* fix one hot infermeta

* polish get attr impl

* fix tests failed

* add testcases

* [KP] fix bug when phi kernel is *_raw

* modify the static graph

* delete useless comment

* delete the phi multiply kernel case

* add VLOG(3) message

* add VLOG(3) message

* fix static graph error in phi

* fix bug in tranform model

* modify the comment

* delete useless code

* fix CI bug

* fix CI bug

* optimize performance of dygraph

* optimize performance of dygraph and elementwise_add

* optimize the trace op

* fix bug

* fix bug

* fix unittest bug

* fix code format

* unify utils naming style

* polish details

* [Performance]Remove redundant op_type  in RecordEvent

* [Performance]Remove redundant op_type  in RecordEvent

* [Performance]Remove redundant op_type  in RecordEvent

* optimize the performanece of sum api

* optimize IsDenseTensorInput

* remove debug log

* polish some impl

* add lost attr type

* polish details

* fix error type

* polish in name lists

* add double attr

* adapt infrt attr parse

* init commit

* remove two hash impl

* fix bug

* polish details

* fix compile failed

* fix compile failed

* fix compile failed

* add default kernel sig cache

* fix get kernel arg defs error

* remove kernel arg defs cache

* fix origin op execute

* merge all phi lib to several big static lib

* merge all phi lib to several big static lib

* opt dygraph scheduling

* revert part impl

* add variant and replace any

* split attribute

* optimiaze performance of PreparePhiData

* dygraph performance optimization