ARM64 / aarch64

The 64-bit version of the ARM architecture; 'aarch64' is just another name for it.

ARM64 (also written aarch64) is the modern 64-bit ARM instruction set used by Apple silicon and most current ARM devices. Its SIMD extension is NEON, which vectorized code targets for a fast backend. The two names are interchangeable; toolchains often prefer 'aarch64.'