yosys/tests/arch/machxo2/dffs.ys

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read_verilog ../common/dffs.v
design -save read
hierarchy -top dff
proc
equiv_opt -assert -map +/machxo2/cells_sim.v synth_machxo2 # equivalency check
design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
cd dff # Constrain all select calls below inside the top module
select -assert-count 1 t:FACADE_FF
select -assert-none t:FACADE_FF %% t:* %D
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design -load read
hierarchy -top dffe
proc
equiv_opt -assert -map +/machxo2/cells_sim.v synth_machxo2 # equivalency check
design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
cd dffe # Constrain all select calls below inside the top module
select -assert-count 2 t:FACADE_FF t:LUT4
select -assert-none t:FACADE_FF t:LUT4 %% t:* %D