Function jit_simd_add 

#[unsafe(no_mangle)]
pub extern "C" fn jit_simd_add(
    a_ptr: *const f64,
    b_ptr: *const f64,
    len: u64,
) -> *mut f64

SIMD-accelerated vector addition: result[i] = a[i] + b[i] Returns a newly allocated buffer that must be freed by the caller