yosys/tests/arch/nexus/mul.ys

read_verilog ../common/mul.v
chparam -set X_WIDTH 8 -set Y_WIDTH 8 -set A_WIDTH 16
hierarchy -top top
proc

design -save read

equiv_opt -assert -map +/nexus/cells_sim.v synth_nexus
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 1 t:MULT9X9

select -assert-none t:IB t:OB t:VLO t:VHI t:MULT9X9 %% t:* %D


design -reset
read_verilog ../common/mul.v
chparam -set X_WIDTH 16 -set Y_WIDTH 16 -set A_WIDTH 32
hierarchy -top top
proc
# equivalence checking is too slow here
synth_nexus
cd top # Constrain all select calls below inside the top module
select -assert-count 1 t:MULT18X18
select -assert-none t:IB t:OB t:VLO t:VHI t:MULT18X18 %% t:* %D


design -reset
read_verilog ../common/mul.v
chparam -set X_WIDTH 32 -set Y_WIDTH 16 -set A_WIDTH 48
hierarchy -top top
proc
# equivalence checking is too slow here
synth_nexus
cd top # Constrain all select calls below inside the top module
select -assert-count 1 t:MULT18X36
select -assert-none t:IB t:OB t:VLO t:VHI t:MULT18X36 %% t:* %D


design -reset
read_verilog ../common/mul.v
chparam -set X_WIDTH 32 -set Y_WIDTH 32 -set A_WIDTH 64
hierarchy -top top
proc
# equivalence checking is too slow here
synth_nexus
cd top # Constrain all select calls below inside the top module
select -assert-count 1 t:MULT36X36

select -assert-none t:IB t:OB t:VLO t:VHI t:MULT36X36 %% t:* %D