[repsilat]

Mostly I'm annoyed because I wanted to try out a bunch of x86 assembly tricks to implement coroutines, and I wanted to try making a language that would spit out and execute its own machine code to do C++ templates at runtime. Those sorts of things get harder when they don't fit the programming model of the people who designed the language/VM.

Of course, portability and safety are going to be problematic there, and those can't be compromised on for a project like WASM. And even if I can't get the power I want out of the base programming model, I can approximate it more slowly in other ways. Turing completeness and all that.

I'm not familiar enough with how CPUs are laid out to know whether a hypothetical instruction set or programming model is supportable in silicon and I haven't read or thought much about it either. In any case I think that would be pretty far outside the scope of what WASM is trying to do.