Function for_each_site_mut 

pub fn for_each_site_mut(p: &mut SpatialProgram, f: &mut dyn FnMut(&mut Site))

Every site p names, rewritten by f: its stages’, buffers’, placement’s, memory map’s, semaphores’ and engine programs’, and the semaphore posts inside those programs. A bijection of sites moves where the program runs and nothing it computes.