einsum support complex and add unittest.

* reduce redundancy

* python code style

* fix int8 ut

* rmsprop for xpu. test=kunlun

* minor fix (follow comments). test=kunlun

* add 'to_static' in engine api

* fix cmakelist

style in test_iou_similarity_op_xpu.py. *test=kunlun

* Polish visit function in transformer

* Call generic_visit first in visit_While/For

* Remove comments

* Polish utils.py, move some transformer to base_transformer

* Pybind JitLayer VarBase Function and add python UT

* Add multi program load UT

* Fix UT place error

* Update jit.save param name

* Remove some comments

* Polish cmakelists

* Polish JitLayer in Python

* Fix comments

* fix op_role

* fix engine

* update op_role

* 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>

* fused_gate_attention manual code in eager

* fix for binary kernels

* fixed performance for elementwise, reduce and concat

* added comment

* CI fix

* CI fix

* added formatting

* reverted one file

* Revert "reverted one file"

This reverts commit 54725e1c62318d3a18913821200e973816751019.

* Revert "added formatting"

This reverts commit b9795dd253d755a329376d7ab0542860aa7815c6.

* added enforcing oneDNN BF16 reduce kernel

* fix for eltwise and reenabled reshape kernels

* fix for binary handler

* added formatting

* referted changes for flatten,squeeze and reshape ops

* add support for control flow block analysis

* move FunctionNameLivenessAnalysis into utils

* pass test_ifelse.py

* remove duplicate data_layer_not_check

* pass the test_ifelse.py

* fix unittest error .

* fix all ci error in first version

* temporay disable CreateVariableTransformer

* fix ci errors

* fix function name liveness analysis bugs

* modifty def cond

* fix

* fix ci error - v2

* fix by code review

* change return_name_ids -> return_name

* not run startup program in constructor of StandaloneExecutor

* clear interface of standalone executor

* clean debug code

* fused_gate_attention manual code in eager

* Menual fused_feedforward in eager

* fix test case

* Dataloader add custom device support

* update test=document_fix

* [Sparse] add SparseCsrTensor fused_attention kernel and API

* fix comment

* refactor mean op, *test=kunlun

* refactor mean op, *test=kunlun

* refactor mean op,*test=kunlun

* refactor mean op,*test=kunlun

Modify the unittests of the assign_value, iou_similarity, one_hot_v2, reduce_mean, roi_align op. test=kunlun (#44061)

* change fluid.mean to paddle.mean

* reverse some old code examples

* refine tensor.dtype for bloat16

* refine test

* revert

* refine bfloat16 print

* Add BaseTransformer for dy2st error message

* Fix return_transformer error

* Polish dy2st error info in runtime

* Fix UT error

* Polish runtime error code

* fix init()

* delete test_device_context

* replace CPUDeviceContext with CPUContext

* fix test_scalar

* remove dot_op.cc

* fix compile

* convert graph to program to let sSandaloneExecutor supporrt CompiledProgram

* skip case that compiled_program._program is None

* execute CompiledProgram._compile to apply build_strategy