Optimizing module shared libraries with BOLT

[aaupov]

As a follow-up to python/cpython#95908:

One thing to note is that Python program may spend considerable time in shared libraries corresponding to modules, and BOLT has an ability to optimize them as well. I would suggest profiling benchmarks with perf and optimizing .so's for modules that ship with CPython.

[corona10]

Thanks @aaupov, I am happy to get suggestions from the BOLT author :)

[aaupov]

Thanks @aaupov, I am happy to get suggestions from the BOLT author :)

To clarify: @maksfb and @rafaelauler are the authors, I'm a contributor