yosys/tests/arch/xilinx/adffs.ys

read_verilog ../common/adffs.v
design -save read

hierarchy -top adff
proc
equiv_opt -async2sync  -assert -map +/xilinx/cells_sim.v synth_xilinx -noiopad # equivalency check
design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
cd adff # Constrain all select calls below inside the top module
select -assert-count 1 t:BUFG
select -assert-count 1 t:FDCE

select -assert-none t:BUFG t:FDCE %% t:* %D


design -load read
hierarchy -top adffn
proc
equiv_opt -async2sync  -assert -map +/xilinx/cells_sim.v synth_xilinx -noiopad # equivalency check
design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
cd adffn # Constrain all select calls below inside the top module
select -assert-count 1 t:BUFG
select -assert-count 1 t:FDCE
select -assert-count 1 t:INV

select -assert-none t:BUFG t:FDCE t:INV %% t:* %D


design -load read
hierarchy -top dffs
proc
equiv_opt -async2sync  -assert -map +/xilinx/cells_sim.v synth_xilinx -noiopad # equivalency check
design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
cd dffs # Constrain all select calls below inside the top module
select -assert-count 1 t:BUFG
select -assert-count 1 t:FDSE

select -assert-none t:BUFG t:FDSE %% t:* %D


design -load read
hierarchy -top ndffnr
proc
equiv_opt -async2sync  -assert -map +/xilinx/cells_sim.v synth_xilinx -noiopad # equivalency check
design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
cd ndffnr # Constrain all select calls below inside the top module
select -assert-count 1 t:BUFG
select -assert-count 1 t:FDRE_1
select -assert-count 1 t:INV

select -assert-none t:BUFG t:FDRE_1 t:INV %% t:* %D