Why are you making a PS3 emulator?

How do you even make a cached interpreter? Any part of the game code that doesn't have the same input and output every time would just have to be recalculated anyway. And this is probably 90 percent of the code I would guess. The performance gains would be minimal, and you would have to check evey variable value every time, etc...

If only those damn scientists would just solve the halting problem so us folk can have GTA V at >9000 FPS on the PS3 on PC.

But seriously do explain what you mean by "caching interpreter", will you.