* add mul doubel grad

* add sub_double_grad

* add add sub high test

* add mutiply test

* modify other unsqueeze

* delete api.yaml

* only for make ci run

* midify unsqueeze

* modify unsqueeze

* tmp

* modify operants gen

* [static op generation] triangular_solve

* [phi] mv triangular_solve_grad to static_backward

* [phi] fix import

* [phi] mv to ops.yaml、 backward.yaml

* fix forward attr

* [phi] fix triangular_solve_grad args

* add pad op

* add_some_code

* modify some code

* add some code

* add some code

* modify some code

* add some code

* modify some code

* Update composite_backward_api.h

* modify some code

* add some code

* add some code

* add some code

* delete overwrite from gather_grad

* fix

* Update gather_grad_kernel.cc

* remove axis from elementwise_grad

* Update elementwise_sig.cc

* add tile_grad composite rule

* add autogen code support for mean_all op

* bug fixed

* bug fixed

* bug fixed

* add gn vjp

* fix 0

* fix args num

* fix type

* debug2

* remove unused expand

* support fp16

* fix typo

* fix reshape bug

* test3

* test4

* fix bug3

* add comment

* add autogen code support for lu

* fix bug

* fix bug

* fix bug

* fix bug

* add autogen code support for expand_as op

* bug fixed

* add autogen code support for squared_l2_norm_op

* Update ops.yaml

* support auto generate for flatten (flatten_contiguous_range)

* add data_type for flatten_grad

* add autogen code support for reverse op

* bug fixed

* autogen segment_pool

* delete legacy_dygraph about segment_pool

* add autogen code bilinear_tensor_product

* [phi] rm cc file

* autogen softmax_with_cross_entropy

* fix error in softmax_with_cross_entropy version

* add autogen code support for affine_grid op

* update op_compat.yaml for affine_grid

* update op_compat.yaml for affine_grid

* fix AffineGridGradInferMeta

* fix CI error

* update AffineGridInferMeta

* Rename conv2d transpose grad grad

* fix

* bce_loss

* fix error

* fix

* fix

* fix

* reslove confilict

* rename_bilinear_tensor_product

* fix

* first commit

* add registry

* add unit test

* fix format

* add unit test

* fix  bug

* replace unsuqeeze to reshape

* fix

* fix unit test

* update test

* update test

* fix unit test

* fix

* fix

* add autogen code support for spectral_norm

* bug fixed

* fix PR-CI-Static-Check fail

* support auto generate for prelu

* op_compat 中增加输入参数

* del attrs ; add kernel data_type

* add PreluGradInferMeta

* add autogen code support for sigmoid_cross_entropy_with_logits

* add inplace

* mv cumprod

* add attrs

* Update backward.yaml

* Update backward.yaml

* fix huber_loss

* fix

* fix ops.yaml add intermediate

* fix

* fix test

* support auto generate for log_softmax

* add data_type