yosys/tests/arch/nanoxplore/shifter.ys

read_verilog ../common/shifter.v
hierarchy -top top
proc
flatten
equiv_opt -async2sync -assert -map +/nanoxplore/cells_sim.v synth_nanoxplore -noiopad # equivalency check
design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
cd top # Constrain all select calls below inside the top module

select -assert-count 8  t:NX_DFF
select -assert-none t:NX_DFF %% t:* %D