yosys/tests/arch/gatemate/mul.ys

read_verilog mul.v
design -save read

hierarchy -top mul_plain
proc
equiv_opt -assert -map +/gatemate/cells_sim.v synth_gatemate -noiopad # equivalency check
design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
cd mul_plain # Constrain all select calls below inside the top module
select -assert-count 1 t:CC_MULT
select -assert-none t:CC_MULT %% t:* %D

design -load read
hierarchy -top mul_signed_async
proc
equiv_opt -assert -async2sync -map +/gatemate/cells_sim.v synth_gatemate -noiopad # equivalency check
design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
cd mul_signed_async # Constrain all select calls below inside the top module
select -assert-count 1 t:CC_MULT
select -assert-count 1 t:CC_BUFG
select -assert-count 28 t:CC_DFF
select -assert-none t:CC_MULT t:CC_BUFG t:CC_DFF %% t:* %D

design -load read
hierarchy -top mul_unsigned_sync
proc
equiv_opt -assert -async2sync -map +/gatemate/cells_sim.v synth_gatemate -noiopad # equivalency check
design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
cd mul_unsigned_sync # Constrain all select calls below inside the top module
select -assert-count 1 t:CC_MULT
select -assert-count 1 t:CC_BUFG
select -assert-max 18 t:CC_LUT4
select -assert-count 18 t:CC_DFF
select -assert-none t:CC_MULT t:CC_BUFG t:CC_LUT4 t:CC_DFF %% t:* %D