Function vget_lane_s64 

pub fn vget_lane_s64(v: int64x1_t, const IMM5: i32) -> i64

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

Move vector element to general-purpose register Arm’s documentation