With Wednesday's changes incorporated, I reprofiled a few roms to see where most of the CPU time was going. Things have changed considerably since I initially talked about deciding what to optimise. Looking at the profiler for Mario 64 the time spent executing display lists is now a much more significant fraction of the total time spent on each frame. Back around R3/R4 only around 20% of the time was spent here. With the latest build display list processing now accounts for around 35-40% of the time. The display list processing hasn't become any slower, it's just becoming more significant as I've optimised the CPU emulation.
From: Strmnnrmn