Now I need to port that code to MIPS, what do? This is a very nice feature to have if you know your environment is overwhelmingly tied to a certain architectur

Now I need to port that code to MIPS, what do? This is a very nice feature to have if you know your environment is overwhelmingly tied to a certain architecture and you want to make it easy to target this architecture in particular. This might actually be a somewhat reasonable, if short-sighted approach if we were in 2005 and you could make the point that anything that's not x86 is effectively legacy or niche but nowadays you need to at the very least support x86-64, ARM32 and AARCH64. Baking all these flavors of assembly into a language would be very heavy handed and a maintenance nightmare. Beyond that we're not in the 90's anymore, ASM is not routinely used outside of very low level code these days. Even for performance people often opt for intrinsics instead. Compilers got massively better at optimizing code while humans got worse due to ever more complex architectures. Being able to seamlessly blend ASM with normal code isn't that much of a killer feature anymore IMO. It would be a costly gimmick to implement.