Post-pass optimization

Okay kiddo, let me explain post-pass optimization to you. Imagine you're building a tower with blocks, and you want it to be as tall as possible. So you stack the blocks as high as you can, but then you notice that some of the blocks aren't quite in the right place, and could be moved to make the tower even taller.

Well, post-pass optimization is a lot like that tower. After a program has been written, that program is like the tower with the blocks stacked as high as possible. But just like how some blocks can be moved to make the tower taller, some parts of the program can be changed or moved around after it's been written to make the program run faster or more efficiently.

This process of changing or moving parts of the program is called post-pass optimization. It's like going back over the program with a fine-toothed comb, looking for parts that could be made better, faster, or more efficient. It's an important part of making sure that computer programs run as smoothly and efficiently as possible.