Create a decoded instruction cache #33
Description
Create a cache of decoded instructions, so that if I run into the same instructions over and over I can skip the entire decode step and just execute it. Since 8086 programs are so small, I should have tons of memory available to cache probably most of the program. It will be interesting to see just how much faster I can make things with that. This change should be relatively easy to make, as it doesn't need anything from the execution side, and only needs types from the decode side.
I want to be able to analyze the performance of this change, so I will hold off on making it until I am ready to do performance analysis.