SIMD intrinsics exist, although currently require nightly compiler on non-x86 targets: https://doc.rust-lang.org/1.29.0/core/arch/x86/index.html https://doc.rus

SIMD intrinsics exist, although currently require nightly compiler on non-x86 targets: https://doc.rust-lang.org/1.29.0/core/arch/x86/index.html https://doc.rust-lang.org/1.29.0/core/arch/x86/index.html Inline assembly: https://rust-lang.github.io/rfcs/2873-inline-asm.html https://rust-lang.github.io/rfcs/2873-inline-asm.html Performance is almost identical, even the linked benchmark is quite even.