* move cross forward OP

* move cross grad op to phi

* move infershape

* refine infershape

* rename ctx

* set dtype and layout in InferMeta

* refine code

* move bce_loss to phi

* refine PADDLE_ENFORCE

* revert PADDLE_ENFORCE

* fix ci

* Migrate poisson op into phi

* fix CI

* fix comment

* Fix for split bf16 inference

* added test for pass

* changes after review

* Optimize the where_op by the elementwise_op funtion

* Modified where_op & abs_grad_op by elementwise interface

* move randperm to phi

* fix npu

* fix memory::Copy

* change CUDA implementaion of bernoulli OP

* fix CI

* move unbind to phi

* revert infer shape

* add header file

* move concat_and_split to phi

* [KP] Add elementwise add xpu, test=develop

* modify the File Permissions

* modify the copyright time

* modify code style

* modify code style

* [Phi] Migrate lable_smooth_op into Phi

* fix PT->PD

* add elementwise_div

* refine rocm

* refine code

* refine op register

* solve conflict

* refine unittest

* refine unittest precision

* add rocm

* remove fill_any_like kernel in fluid and fix data transform bug

* support scalar in infershpe

* recover infershape in fill_and_like

* Move Real OP to phi

* Move Imag OP to phi

* Move Real and Imag InferShape to phi

* Move Real and Imag to complex_kernel

* Change PT_REGISTER_XXX to PD_REGISTER_XXX

* change Vector to std::vector and provide MixVector class as a helper wrapper class

* solve the multi-gpu hang problem

* remove the duplicate template instantialize

* Copy vector to cpu

* add CopyToCPU

* xxx

* final version: fix the problem of all reduce

* remove mixvector dependence

* fix

* merge

* fix code

* fix by CI

* [Phi] Migrate unfold_op into phi

* fix im2col CPUContext template instantial

* fix unfold_op.h header include problem

* fix unittest

* fix PT->PD

* Modify the implementation of BlockYReduce to fit more scenes

* fix

* fix

* Modified RandomKernel with Kernel Primitive API

* update pten.h to phi.h

* update

* update fullKernel

* Add Sort API for Kernel Primitive API

* update & -> ptr

* unify register macro

* rename declare macro

* fix infrt error

* migrate huber_loss into phi

* migrate infershape

* modify pten into phi

* rm reduce_sum raw kernel

* remove reduce_mean kernel

* remove reduce_mean kernel

* reduce support int and int64_t

* mean support int and int64_t type

* remove infershape and Xshape

* add xshape

* fix bugs when run ci

* fix bugs when run ci

* fix bugs when run infrt test

* pass converage

* rename pten dir to phi

* rename namespace to phi

* rename infrt pten dir to phi

* resolve conflict

* rename pten to phi in cmake

* revert all infrt change

* change needed files

* fix infrt failed

* fix inference failed