Nor will they be restricted by the LLVM design. That project is huge and generic trying to be everything and target everything (and takes ages to rebuild if you need some changes). Sometimes it's better to go simple and targeted - time will tell if that's the right choice.
> Although we strive to emit the best possible LLVM bitcode, the ZLUDA compiler simply is not an optimizing, SSA-based compiler. There are certain optimizations relevant to machine learning workloads that are beyond our reach without custom LLVM optimization passes.
Zluda used LLVM and ended up bundling a patched version to achieve what they wanted https://vosen.github.io/ZLUDA/blog/zluda-update-q4-2025/
> Although we strive to emit the best possible LLVM bitcode, the ZLUDA compiler simply is not an optimizing, SSA-based compiler. There are certain optimizations relevant to machine learning workloads that are beyond our reach without custom LLVM optimization passes.