[0-size Tensor No.18、42、51、83] Add 0-size Tensor support for hessian、cumulative_trapezoid、einsum、fused_feedforward API.

[DanielSun11]

PR Category

Operator Mechanism

PR Types

Bug fixes

Description

• paddle.cumulative_trapezoid
  测试通过，添加单测
  

• paddle.autograd.hessian
  仅有CPU报错记录，CPU测试结果：
  

• paddle.einsum
  CPU/GPU都报段错误，修复段错误之后 0 size的shape推导出错，修复了shape推导。
  修复完成后回测结果：

• paddle.incubate.nn.functional.fused_feedforward
  存在cuda error 9，修复kernel。

pcard-67164

[paddle-bot]

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 55.55556% with 4 lines in your changes missing coverage. Please review.

Please upload report for BASE (develop@927dc47). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
paddle/phi/kernels/impl/einsum_kernel_impl.h	50.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             develop   #73962   +/-   ##
==========================================
  Coverage           ?   55.55%           
==========================================
  Files              ?        2           
  Lines              ?        9           
  Branches           ?        0           
==========================================
  Hits               ?        5           
  Misses             ?        4           
  Partials           ?        0           

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[wanghuancoder]

LGTM