Comment by verdagon

GPU compilation is definitely something I intend Valen to support. I wrote about it back in 2022, [0] and I learned a lot of lessons on how to do it (and how not to do it!) from working on the Mojo compiler.

The biggest decision for Valen is what to lower to:

* Rust MIR, since rustc has CUDA now, [1] (perhaps other cards soon?)

* SPIR-V, like Zig does for its GPU compilation [2]

* MLIR

Rust MIR is looking pretty nice. Valen already has Rust interop by doing some rustc sorcery, [3] and it would be somewhat straightforward to switch from emitting LLVM to emitting Rust MIR. I just need to figure out if Rust MIR can support the optimizations I have planned for Valen.

In a perfect world, Rust would be able to lower its MIR to MLIR, since MLIR has so many backends. I recall there were some efforts to do that, unsure where that ended up.

[0] https://verdagon.dev/blog/next-gen-languages-gpu

[1] https://developer.nvidia.com/blog/introducing-cuda-rust-two-...

[2] https://ziglang.org/devlog/2026/#2026-06-26

[3] https://verdagon.dev/blog/golden-spike-reviving-vale-valen