> I also couldn't find a GCC or LLVM backend for its architecture and no software simulator with or without cycle counters.
They do have a compiler, and they do have a simulator. Or rather compilers and simulators: one for each Mill family member. The simulator, compiler and related intermediary tooling (and the specification they use to produce them) are the first “real” things they've written and gotten working, and the simulator defines the instruction set. They've done a live demo of editing the specification and producing a new simulator, so I'm inclined to believe there's no subterfuge here.
However, they're not public. Possibly because they haven't finished filing all their patents?
They do have a compiler, and they do have a simulator. Or rather compilers and simulators: one for each Mill family member. The simulator, compiler and related intermediary tooling (and the specification they use to produce them) are the first “real” things they've written and gotten working, and the simulator defines the instruction set. They've done a live demo of editing the specification and producing a new simulator, so I'm inclined to believe there's no subterfuge here.
However, they're not public. Possibly because they haven't finished filing all their patents?