To be fair, this isn't that different from things we'd do back in the day.

I use to write BBS software in BASIC on the C64, and one of the things we'd do is use a "compiler" that would do some optimizations. What this allowed was being able to write a program too big to actually run, but the optimized version of it could.

I wish I could share more details and be less hand-wavy... but it turns out the 80's were a long time ago and I just haven't given it much thought since then (at least until I saw your comment).