Message 285451 - Python tracker

> Slower (63):
> - unpickle_pure_python: 671 us +- 16 us -> 952 us +- 9 us: 1.42x slower (+42%)
> ...

This benchmark was run with LTO+PGO. It seems like PGO produced less efficient machine code with the patch. Maybe a missed optimization.

Oh, I just realized that I announced that objects with a __call__() are faster, but it's not the case yet! Such object still gets slot_tp_call() as tp_call which isn't a fastcall!