yosys/tests/various/hierarchy_defer.ys

read -noverific
read -vlog2k <<EOT
module first;
endmodule

(* top *)
module top(input i, output o);
sub s0(i, o);
endmodule

(* constant_expression=1+1?2*2:3/3 *)
module sub(input i, output o);
assign o = ~i;
endmodule
EOT
design -save read

hierarchy -auto-top
select -assert-any top
select -assert-any sub
select -assert-none foo

design -load read
hierarchy
select -assert-any top
select -assert-any sub
select -assert-none foo