Yeah I saw 68k in there, rust also will target sparc and sparc64. And s930, but yeah, I can see how alpha and pa-risc support would be really important for linux to continue supporting.

Xtensa got upstream support, but so many embedd vendors seem to want to double dip and sell build tools, so they don't upstream their llvm based build tools. Shortsighted imo. Vendors that don't charge for build tools will make it up in sales volume.