Function svadrd_u64base_u64index 

pub fn svadrd_u64base_u64index(
    bases: svuint64_t,
    indices: svuint64_t,
) -> svuint64_t

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

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

Compute vector addresses for 64-bit data Arm’s documentation