Andreas Kling 8656835935 UserspaceEmulator: Add a very simple instruction fetch cache ...

To avoid MMU region lookup on every single instruction fetch, we now
cache a raw pointer to the current instruction. This gets automatically
invalidated when we jump somewhere, but as long as we're executing
sequentially, instruction fetches will hit the cache and bypass all
the region lookup stuff.

This is about a ~2x speedup. :^)

2020-07-13 20:14:14 +02:00

2.5 KiB

Raw Blame History

View Raw