Function svext_u8 

pub fn svext_u8<const IMM3: i32>(op1: svuint8_t, op2: svuint8_t) -> svuint8_t

🔬This is a nightly-only experimental API. (stdarch_aarch64_sve #145052)

Available on (AArch64 or ARM64EC) and target feature sve only.

Extract vector from pair of vectors Arm’s documentation