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yosys/tests/various/submod.ys
2019-11-22 16:50:09 -08:00

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read_verilog <<EOT
module top(input a, output [1:0] b);
wire c;
(* submod="bar" *) sub s1(a, c);
assign b[0] = c;
endmodule
module sub(input a, output c);
assign c = a;
endmodule
EOT
hierarchy -top top
proc
design -save gold
submod
flatten
design -stash gate
design -import gold -as gold
design -import gate -as gate
miter -equiv -flatten -make_assert -make_outputs gold gate miter
sat -verify -prove-asserts -show-ports miter