[Cython] Performance comparison with CPython for attribute/item access

[Stefan Behnel]

Stefan Behnel schrieb am 16.02.19 um 22:39:
> - The list append/pop optimisations seem to slow down non-lists
> unproportionally, for deques by 3x compared to CPython. That seems worth
> improving.
> 
> CPython 3.8 (63fa1cfece)
> ========================
> Stack (or queue) operations:
>   61.6 ns       list_append_pop
>   53.9 ns       deque_append_pop
> 
> Cython 3.0a0 (f1eaa9c1f)
> ========================
> Stack (or queue) operations:
>   20.7 ns       list_append_pop
>  155.4 ns       deque_append_pop
> 
> Cython 3.0a0 (no-opt)
> =====================
> Stack (or queue) operations:
>   66.4 ns       list_append_pop
>   75.1 ns       deque_append_pop

Fixed for Py3.7+:
  20.0 ns       list_append_pop
  45.5 ns       deque_append_pop

https://github.com/cython/cython/issues/2850

Stefan