Yes, the reality is all those weird architectures stopped being developed and actively supported 20 years ago. If someone wants to get some old Itaniums and Al

Yes, the reality is all those weird architectures stopped being developed and actively supported 20 years ago. If someone wants to get some old Itaniums and Alphas and such together to hack in support, go wild and have fun. But the reality is the venn diagram interesection of people knowledgeable enough to create a LLVM backend, people motivated to support vintage architectures, and people that actually have the hardware available and ready to test is basically zero. If people in the community are passionate about it happening then organize and make it a reality.