yosys/tests/arch/gowin/counter.ys

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read_verilog ../common/counter.v
hierarchy -top top
proc
flatten
equiv_opt -assert -multiclock -map +/gowin/cells_sim.v synth_gowin # 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:DFFC
select -assert-count 8 t:ALU
select -assert-count 1 t:GND
select -assert-count 1 t:VCC
select -assert-count 2 t:IBUF
select -assert-count 8 t:OBUF
select -assert-none t:DFFC t:ALU t:GND t:VCC t:IBUF t:OBUF %% t:* %D