[Asm2D]

Yeah, I usually write compilers in C++ and it seems we have totally different use-cases :)

High performance assembling is literally what asmjit was designed for and that allows it to be used in interesting projects - for example there are multiple databases that use asmjit to JIT compile queries, and low-latency compilation is the key feature here.

BTW if you need a pure C library to encode x86 there is zydis (yeah it used to be a disassembler only, but it has now also an encoder), but it's only for x86.