RaptorJIT is good for writing applications like Snabb. Snabb is a networking framework that’s very low level: cycle-counting loops, device drivers, DMA, etc, in Lua. In this domain of high performance software networking the advantages of supporting other architectures don’t currently outweigh the costs.

That’s why it’s a low-level system programming language that prioritizes working very well on x86-64 over supporting other platforms like 32-bit heap, MIPS, Xbox, no FPU, etc. Just got bigger fish to fry right now.