equiv_opt -assert -map +/gowin/cells_sim.v synth_gowin -nowidelut # equivalency check
design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
cd mux8 # Constrain all select calls below inside the top module
-select -assert-count 5 t:LUT4
select -assert-count 11 t:IBUF
select -assert-count 1 t:OBUF
equiv_opt -assert -map +/gowin/cells_sim.v synth_gowin -nowidelut # equivalency check
design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
cd mux16 # Constrain all select calls below inside the top module
-select -assert-count 10 t:LUT4
-select -assert-count 1 t:LUT3
select -assert-count 20 t:IBUF
select -assert-count 1 t:OBUF