yosys/tests/various/specify.ys

read_verilog -specify specify.v
prep
cd test
select t:$specify2 -assert-count 0
select t:$specify3 -assert-count 1
select t:$specrule -assert-count 2
cd test2
select t:$specify2 -assert-count 2
select t:$specify3 -assert-count 0
select t:$specrule -assert-count 0
cd
write_verilog specify.out
design -stash gold

read_verilog -specify specify.out
prep
cd test
select t:$specify2 -assert-count 0
select t:$specify3 -assert-count 1
select t:$specrule -assert-count 2
cd test2
select t:$specify2 -assert-count 2
select t:$specify3 -assert-count 0
select t:$specrule -assert-count 0
cd
design -stash gate

design -copy-from gold -as gold test
design -copy-from gate -as gate test
rename -hide
rename -enumerate -pattern A_% t:$specify3
rename -enumerate -pattern B_% t:$specrule r:TYPE=$setup %i
rename -enumerate -pattern C_% t:$specrule r:TYPE=$hold %i
select n:A_* -assert-count 2
select n:B_* -assert-count 2
select n:C_* -assert-count 2
equiv_make gold gate equiv
hierarchy -top equiv
equiv_struct
equiv_induct -seq 5
equiv_status -assert
design -reset

design -copy-from gold -as gold test2
design -copy-from gate -as gate test2
rename -hide
rename -enumerate -pattern A_% t:$specify2 r:T_RISE_TYP=1 %i
rename -enumerate -pattern B_% t:$specify2 n:A_* %d
select n:A_* -assert-count 2
select n:B_* -assert-count 2
equiv_make gold gate equiv
hierarchy -top equiv
equiv_struct
equiv_induct -seq 5
equiv_status -assert
design -reset

read_verilog -specify <<EOT
(* blackbox *)
module test7_sub(input i, output o);
specify
    (i => o) = 1;
endspecify
assign o = ~i;
endmodule

module test7(input i, output o);
    wire w;
    test7_sub unused(i, w);
    test7_sub used(i, o);
endmodule
EOT
hierarchy
cd test7
clean
select -assert-count 1 c:used
select -assert-none c:* c:used %d