yosys/tests/arch/machxo2/tribuf.ys

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read_verilog ../common/tribuf.v
hierarchy -top tristate
proc
flatten
equiv_opt -assert -map +/lattice/cells_sim_xo2.v -map +/simcells.v synth_machxo2 # equivalency check
design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
cd tristate # Constrain all select calls below inside the top module
select -assert-count 1 t:$_TBUF_
select -assert-none t:$_TBUF_ %% t:* %D