JVM Bytecode Dedupe

[cretz]

Notes:

• Proguard's code/merging really just merges inside a single method
• This is whole-classpath deduplication
• Basically finds decent-sized duplicated instruction blocks w/out side effects and builds a static synthetic method that does them
• Benefits of this are really just JIT oriented
• Could be runtime via Rust and the agent approach which is fun
• Could leverage state of the art deduplication algorithms which is fun

[cretz]

Meh, this is kind of a dumb idea, because the JVM inlines when it wants anyways, so really the optimization is surely not worth it and even though you can trim jar size, probably not by much. This would probably be a just-for-fun experiment (maybe even as a proguard pass) and not really that beneficial.