What are the advantages of just-in-time compilation versus ahead-of-time compilation?

Question

I\'ve been thinking about it lately, and it seems to me that most advantages given to JIT compilation should more or less be attributed to the intermediate

Answer 1

Simple logic tell us that compiling huge MS Office size program even from byte-codes will simply take too much time. You'll end up with huge starting time and that will scare anyone off your product. Sure, you can precompile during installation but this also has consequences.

Another reason is that not all parts of application will be used. JIT will compile only those parts that user care about, leaving potentially 80% of code untouched, saving time and memory.

And finally, JIT compilation can apply optimizations that normal compilators can't. Like inlining virtual methods or parts of the methods with trace trees. Which, in theory, can make them faster.