Function visit_results 

pub fn visit_results<'mir, 'tcx, A>(
    body: &'mir Body<'tcx>,
    blocks: impl IntoIterator<Item = BasicBlock>,
    results: &Results<'tcx, A>,
    vis: &mut impl ResultsVisitor<'tcx, A>,
)
where
    A: Analysis<'tcx>,

Calls the visitor methods in vis for every location in every block in blocks. Note that every block in blocks must be reachable, and a debug_assert checks this.