Safe SIMD in Rust, Even on the Inside – By Sergey "Shnatsel" Davidoff
5 hours ago
- #Performance
- #SIMD
- #Rust
- Rust's SIMD abstractions were improved to reduce unsafe code usage.
- A new method uses CPU feature tokens (zero-sized types) to ensure safe SIMD intrinsic calls.
- Generics allow SIMD operations like a + b to automatically use the best available instruction set.
- Inlining and #[target_feature] annotations help maintain performance but require careful function annotation.
- The fearless_simd crate (v0.5) implements these ideas, offering a safer and more pleasant SIMD API.