yosys/tests/arch/xilinx/fsm.ys

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read_verilog ../common/fsm.v
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hierarchy -top fsm
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proc
flatten
equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
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cd fsm # Constrain all select calls below inside the top module
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select -assert-count 1 t:BUFG
select -assert-count 5 t:FDRE
select -assert-count 1 t:LUT3
select -assert-count 2 t:LUT4
select -assert-count 4 t:LUT6
select -assert-none t:BUFG t:FDRE t:LUT3 t:LUT4 t:LUT6 %% t:* %D