read_verilog adffs.v
+design -save read
+
proc
-#async2sync # converts async flops to a 'sync' variant clocked by a 'super'-clock
-flatten
-equiv_opt -multiclock -assert -map +/efinix/cells_sim.v synth_efinix # equivalency check
+hierarchy -top adff
+equiv_opt -assert -map +/efinix/cells_sim.v synth_efinix # equivalency check
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
+cd adff # Constrain all select calls below inside the top module
+select -assert-count 1 t:EFX_FF
+select -assert-count 1 t:EFX_GBUFCE
+
+select -assert-none t:EFX_FF t:EFX_GBUFCE %% t:* %D
+
+design -load read
+proc
+hierarchy -top adffn
+equiv_opt -assert -map +/efinix/cells_sim.v synth_efinix # 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:EFX_FF
select -assert-count 1 t:EFX_GBUFCE
-select -assert-count 4 t:EFX_FF
-select -assert-count 2 t:EFX_LUT4
-select -assert-none t:EFX_GBUFCE t:EFX_FF t:EFX_LUT4 %% t:* %D
+
+select -assert-none t:EFX_FF t:EFX_GBUFCE %% t:* %D
+
+
+design -load read
+proc
+hierarchy -top dffs
+equiv_opt -assert -map +/efinix/cells_sim.v synth_efinix # 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:EFX_FF
+select -assert-count 1 t:EFX_GBUFCE
+select -assert-count 1 t:EFX_LUT4
+
+select -assert-none t:EFX_FF t:EFX_GBUFCE t:EFX_LUT4 %% t:* %D
+
+
+design -load read
+proc
+hierarchy -top ndffnr
+equiv_opt -assert -map +/efinix/cells_sim.v synth_efinix # 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:EFX_FF
+select -assert-count 1 t:EFX_GBUFCE
+
+select -assert-count 1 t:EFX_FF
+select -assert-count 1 t:EFX_GBUFCE
+select -assert-count 1 t:EFX_LUT4
+
+select -assert-none t:EFX_FF t:EFX_GBUFCE t:EFX_LUT4 %% t:* %D