[Optimisation, Optimization] : reduce graph size

[emil14]

Actual computation is routines. Can we somehow calculate the smallest possible graph at optimization pass? This should probably be under some -o flag or just be simply disabled with run cmd not to loose ability to debug your program as is

[emil14]

Givers count

Imagine there's 2 givers that both sends the same (equal?) msg but to different places. It's possible to leave just 1 giver with 2 connections instead of having 2 givers with 1 connection each.

This is the reason why we don't need msg refs at runtime