> The C extension was an after thought I understand that "afterthought" can be more of a subjective comment on the design than a concrete claim about the order

> The C extension was an after thought I understand that "afterthought" can be more of a subjective comment on the design than a concrete claim about the order of events, but still I'll quote directly from the RISC-V Instruction Set Manual: > Given the code size and energy savings of a compressed format, we wanted to build in support for a compressed format to the ISA encoding scheme rather than adding this as an afterthought