* move distribute_fpn_proposals

* fix some code

* fix yaml bugs

* add set dtype

* move proposal_impl to funcs

* fix compile bugs

fix 5 operator makers with typos which pass string literal to argument 'generated', remove generated as parameter of AddAttr (#44935)

* phi_fill_diagonal_tensor

* delete extra lines

* update

* add legacy api test

* rename sig

* phi_generate_proposals_v2

* remove old kernels

* optest add eager_check

* del lod

* update

* update

* update test_detection with_lod

* update nms_util

* remove old nms_util.h

* add cmake enforce

* transfer multiclass_nms3  to phi

* phi_matrix_nms

* remove old kernels and add optest check_eager

* reoder args

* reoder args in infermate

* update

* get back legacy dygraph

* add yaml and unittest

* update yaml

* update backward yaml and unittest

* update yaml

* add Yolov3LossGradInferMeta

* update yolov3_loss_op.cc

* fix bug

* code format

* remove cudaDeviceContext

* remove more template

* fix rocm compile

* remove alias name CUDADeviceContext

* fix compile

* fix tests

* revert changes

* update unstack_op

* update unstack_op

* update unstack_op

* fix unstack test

* update unstack

* update with remote

* fix unstack_test.py

* temp_save_change_nms_op

* add nms test

* update nms fix

* update unstack_op

* temp save change

* finish fix nms_op

* pass nms test

* fix CI

* fix ops test

* save change

* fix code style

* fix code style

* fix ci and codestyle

* fix ci
Co-authored-by: NShiningZhang <zhang_liang1991@126.com>

* phi_prior_box

* add float[] support

* phi_prior_box_optest

* update

* Rename BOOST_GET macros

* Fix conflicts

* fix init()

* delete test_device_context

* replace CPUDeviceContext with CPUContext

* fix test_scalar

* remove dot_op.cc

* fix compile

* boost::variant -> paddle::variant

* boost::variant.apply_visit -> paddle::visit

* Update pybind_boost_hraders.h

* Fix CINN compilation errors

* Revert FetchResultType

* cpplint fix 2

* cpplint fix 2

* fix cpplint style 4

* fix cpplint style 4

* fix cpplint style 4

* fix cpplint style 4

* Refactor port.h

* Remove some unnecessary code

* Fix CI errors

Fix the bug of slice op and optimize the code style of generate_proposals_v2 op for kunlun. *test=kunlun (#43380)

* Add generate_proposals_v2 op and unittest for kunlun. *test=kunlun

* Add the assign op to xpu2_op_list and expand the function of gather op. Add the unit-test of generate_proposals_v2. *test=kunlun

* split phi and fluid infermeta context

* resolve conflict

* fix type error

* optimize scheduling perf

* spec small vector size

* replace all grad var name

* fix test failed

* move init defalut signature

* polish details

* polish details

* fix no init bug

* init sig for tests

* add init sig for infer

* fix infrt error

* fix infrt failed

* fix kunlun error

* fix infrt failed

* add nms op and batched_nms api

* mv yolov3_loss op to phi

* fix as review

* update operator.h

* add infer meta; test=develop

* add histogram infer meta; test=develop

* fix unitest bug; test=develop

* format; test=develop

* format; test=develop

* bn not use new infer meta; test=develop

* add infer meta; test=develop

* fixbug; test=develop

* fix bug;

* recover unitest; test=develop

* add yolo box kernel; test=develop

* fix comile error; test=develop

* modify infershape of multiclass nms

* modify infershape of yolo_box

* move gather.h gather.cu.h scatter.h scatter.cu.h to phi library

* fix CI

* fix rocm ci

* 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

* 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

* Unify paddle/pten::framework::ddim into pten::ddim

* fix paddle namespace

* compile sucessfully

* fix npu src file

* fix conflict

* fix conflict

* fix tensorrt compiler error

* fix conflict

* fix conflict

* fix tesst file conflict

* fix conflict

* fix mlu file conflict

* fix mlu file conflict

* fix cinn header file conflict

* fix conflict

* fix conflict

* fix conflict

* fix conflict