Do you mean the JIT engine in this same codebase? It looks like it generates C code and compiles it on the fly. The generated code seems to do manual stack ope

Do you mean the JIT engine in this same codebase? It looks like it generates C code and compiles it on the fly. The generated code seems to do manual stack operations, rather than assigning values to variables, and it’s compiled with -O1 so it won’t be heavily optimized. It will be a bit faster than the interpreter because it avoids the opcode dispatch overhead, but if I understand the code right it’s not surprising that it isn’t a ton faster.