Dynamically generated code, e.g. proxy classes and aspect pointcuts being inserted into code and then recompiled by the JIT. And even "just" dynamically loadin

Dynamically generated code, e.g. proxy classes and aspect pointcuts being inserted into code and then recompiled by the JIT. And even "just" dynamically loading a library requires recompilation because it will invalidate optimizer assumptions such as devirtualization (part of class hierarchy analysis in hotspot).