yosys/tests/various/aiger2.ys

read_verilog -icells <<EOF
module test();
`define CELL_AY(typ)  \
wire typ``_a, typ``_y; \
$``typ typ(.A(typ``_a), .Y(typ``_y));
`define CELL_ABY(typ)  \
wire typ``_a, typ``_b, typ``_y; \
$``typ typ(.A(typ``_a), .B(typ``_b), .Y(typ``_y));
`define CELL_SABY(typ)  \
wire typ``_a, typ``_b, typ``_y, typ``_s; \
$``typ typ(.A(typ``_a), .B(typ``_b), .Y(typ``_y), .S(typ``_s));
`define CELL_ABCY(typ)  \
wire typ``_a, typ``_b, typ``_c, typ``_y; \
$``typ typ(.A(typ``_a), .B(typ``_b), .C(typ``_c), .Y(typ``_y));
`define CELL_ABCDY(typ)  \
wire typ``_a, typ``_b, typ``_c, typ``_d, typ``_y; \
$``typ typ(.A(typ``_a), .B(typ``_b), .C(typ``_c), .D(typ``_d), .Y(typ``_y));

`CELL_AY(_BUF_)
`CELL_AY(_NOT_)
`CELL_ABY(_AND_)
`CELL_ABY(_NAND_)
`CELL_ABY(_OR_)
`CELL_ABY(_NOR_)
`CELL_ABY(_XOR_)
`CELL_ABY(_XNOR_)
`CELL_ABY(_ANDNOT_)
`CELL_ABY(_ORNOT_)
`CELL_SABY(_MUX_)
`CELL_SABY(_NMUX_)
`CELL_ABCY(_AOI3_)
`CELL_ABCY(_OAI3_)
`CELL_ABCDY(_AOI4_)
`CELL_ABCDY(_OAI4_)
endmodule
EOF

expose -input c:* %ci* w:* %i
expose c:* %co* w:* %i
copy test gold
select test
write_aiger2 aiger2_gates.aig
select -clear
delete test
read_aiger -module_name test aiger2_gates.aig
select -assert-none test/t:$_AND_ test/t:$_NOT_ %% test/c:* %D
miter -equiv -make_outcmp -flatten gold test miter
sat -verify -show-ports -prove trigger 0 miter

design -reset
read_verilog -icells <<EOF
module test();

`define BIOP(name,op,w1,w2,wy) \
wire [w1-1:0] name``_a1; \
wire [w2-1:0] name``_b1; \
wire [wy-1:0] name``_y1; \
assign name``_y1 = name``_a1 op name``_b1; \
wire signed [w1-1:0] name``_a2; \
wire signed [w2-1:0] name``_b2; \
wire [wy-1:0] name``_y2; \
assign name``_y2 = name``_a2 op name``_b2;

`define UNOP(name,op,w1) \
wire signed [w1-1:0] name``_a1; \
wire signed [w1-1:0] name``_y1; \
assign name``_y1 = op name``_a1; \
wire [w1-1:0] name``_a2; \
wire [w1-1:0] name``_y2; \
assign name``_y2 = op name``_a2;

`define UNOP_REDUCE(name,op,w1) \
wire signed [w1-1:0] name``_a1; \
wire name``_y1; \
assign name``_y1 = op name``_a1; \
wire [w1-1:0] name``_a2; \
wire name``_y2; \
assign name``_y2 = op name``_a2;

`BIOP(and, &, 3, 4, 5)
`BIOP(or, |, 4, 3, 2)
`BIOP(xor, ^, 3, 3, 3)
`BIOP(xnor, ~^, 3, 3, 3)
`BIOP(logic_and, &&, 4, 3, 1)
`BIOP(logic_or, ||, 3, 3, 2)
`BIOP(eq, ==, 3, 3, 1)
`BIOP(ne, !=, 3, 3, 1)
`BIOP(lt, <, 3, 3, 1)
`BIOP(le, <=, 3, 3, 1)
`BIOP(gt, >, 3, 3, 1)
`BIOP(ge, >=, 3, 3, 1)
`UNOP(not, ~, 3)
`UNOP_REDUCE(logic_not, !, 3)
`UNOP_REDUCE(reduce_and, &, 3)
`UNOP_REDUCE(reduce_or, |, 3)
`UNOP_REDUCE(reduce_xor, ^, 3)
`UNOP_REDUCE(reduce_xnor, ~^, 3)

wire [3:0] mux_a, mux_b, mux_s, mux_y;
assign mux_y = mux_s ? mux_b : mux_a;

wire [1:0] fa_a, fa_b, fa_c, fa_x, fa_y;
\$fa #(
	.WIDTH(2)
) fa(.A(fa_a), .B(fa_b), .C(fa_c), .X(fa_x), .Y(fa_y));

wire [1:0] bwmux_a, bwmux_b, bwmux_s, bwmux_y;
\$bwmux #(
	.WIDTH(2)
) bwmux(.A(bwmux_a), .B(bwmux_b), .S(bwmux_s), .Y(bwmux_y));
endmodule
EOF

expose -input c:* %ci* w:* %i
expose c:* %co* w:* %i
splitnets -ports
copy test gold
select test
write_aiger2 aiger2_ops.aig
select -clear
delete test
read_aiger -module_name test aiger2_ops.aig
select -assert-none test/t:$_AND_ test/t:$_NOT_ %% test/c:* %D
miter -equiv -make_outcmp -flatten gold test miter
sat -verify -show-ports -prove trigger 0 miter

design -reset
read_verilog -icells <<EOF
module submodule1(a, y1, y2);
	input wire [2:0] a;
	output wire [2:0] y1 = a + 1;
	output wire [2:0] y2 = a + 2;
endmodule

module submodule2(a, y1);
	input wire [2:0] a;
	output wire [2:0] y1 = ~a;
endmodule

module test(a, y1, y2);
	input wire [2:0] a;
	output wire [2:0] y1;
	output wire [2:0] y2;

	wire [2:0] m1;
	wire [2:0] m2;

	submodule2 s1(.a(a), .y1(m1));
	submodule1 s2(.a(m1), .y1(y1), .y2(m2));
	submodule2 s3(.a(m2), .y1(y2));
endmodule
EOF

expose -input c:* %ci* w:* %i
expose c:* %co* w:* %i
splitnets -ports
copy test gold
flatten gold
techmap submodule1
select test
write_aiger2 -flatten aiger2_ops.aig
select -clear
delete test
read_aiger -module_name test aiger2_ops.aig
select -assert-none test/t:$_AND_ test/t:$_NOT_ %% test/c:* %D
miter -equiv -flatten gold test miter
sat -verify -prove trigger 0 miter

design -reset
read_verilog -icells <<EOF
module test();
wire [1:0] pmux_a, pmux_s, pmux_y;
wire [3:0] pmux_b;
\$pmux #(
	.S_WIDTH(2),
	.WIDTH(2)
) pmux(.A(pmux_a), .B(pmux_b), .S(pmux_s), .Y(pmux_y));
endmodule
EOF

expose -input c:* %ci* w:* %i
expose c:* %co* w:* %i
splitnets -ports
opt_clean
copy test gold
select test
write_aiger2 aiger2_xmodel.aig
select -clear
delete test
read_aiger -module_name test aiger2_xmodel.aig
select -assert-none test/t:$_AND_ test/t:$_NOT_ %% test/c:* %D

equiv_make gold test equiv
equiv_induct -undef equiv
equiv_status -assert equiv

design -reset
read_verilog -icells <<EOF
module sm2(input wire [1:0] a, output wire [1:0] y);
	assign y = a + 1;
endmodule

module sm1(input wire [2:0] a, output wire [2:0] y);
	sm2 inst(a[1:0], y[2:1]);
	assign y[0] = !a[2];
endmodule

module top(input wire [4:0] a, output wire [4:0] y);
	sm1 i1(.a(a[2:0]), .y(y[2:0]));
	sm2 i2(.a(a[4:3]), .y(y[4:3]));
endmodule
EOF

prep -top top
# deal with arithmetic which is unsupported inside aiger2
techmap t:$add

splitnets -ports top
write_aiger2 -flatten aiger2_flatten.aig
flatten
rename top gold
read_aiger -module_name gate aiger2_flatten.aig
miter -equiv -flatten gold gate miter
sat -verify -prove trigger 0 miter