private void PutIntoCache(Node stmt, double execOrder)
{
_execOrders.Add(stmt, execOrder);
// todo. use Family instead of ChildrenRecursive and make this not crash
var usages = stmt.ChildrenRecursive().Where(n => n.IsAtom()).ToReadOnly();
foreach (Expression u in usages)
{
_atoms.Add(u);
var cache = _usages.GetOrCreate(u, () => new List<Expression>());
var ins = cache.TakeWhile((u2, i) => _execOrders[u2.Stmt()] <= execOrder).Count();
var isAssignToAtom = u.Parent is Assign && ((Assign)u.Parent).Lhs == u;
cache.Insert(ins, isAssignToAtom ? u.Parent.AssertCast<Assign>() : u);
}
}
private void EvictFromCache(Node stmt)
{
_execOrders.Remove(stmt);
// todo. use Family instead of ChildrenRecursive and make this not crash
var atoms = stmt.ChildrenRecursive().Where(n => n.IsAtom()).Distinct(Node.EquivComparer()).ToReadOnly();
foreach (Expression atom in atoms)
{
_usages[atom].RemoveElements(e => e.Stmt() == stmt);
if (_usages[atom].IsEmpty()) _atoms.Remove(atom);
}
}