Our internal structs are using IFDEFs to enable/disable feature specific fields on deman (e.g. AVX-512 related fiels). As well, bitfields are used to optimize struct sizes.

While bindings prevents us to do the same optimizations for the public API structs, we could introduce a new ZYDIS_SIZE_OPTIMIZED_UNSAFE_FOR_BINDINGS CMake option (naming open for discussion as well).

This option would indicate that Zydis is used in a pure C/C++ project and always built on demand (-> we know the feature defines of headers and code files are the same; this is the essential part!). This would allow us to e.g. change the ZydisDecodedOperand struct to union or to introduce bitfields in the public API.