Function vhadd_u8 

pub fn vhadd_u8(a: uint8x8_t, b: uint8x8_t) -> uint8x8_t

Available on target feature neon and (AArch64 or ARM or ARM64EC) and (AArch64 or ARM64EC) and (AArch64 or ARM64EC or target feature v7) only.

Halving add Arm’s documentation