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yosys/tests/opt/alumacc.ys
2023-10-09 00:36:22 +08:00

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read_verilog <<EOT
module top(...);
input [7:0] ra;
input [7:0] rb;
output gt;
output sgt;
output lt;
output slt;
output ge;
output eq;
output seq;
output ne;
assign gt = ra > rb;
assign sgt = $signed(ra) > $signed(rb);
assign lt = ra < rb;
assign slt = $signed(ra) < $signed(rb);
assign ge = ra >= rb;
assign eq = ra == rb;
assign seq = $signed(ra) == $signed(rb);
assign ne = ra != rb;
endmodule
EOT
proc
equiv_opt -assert alumacc
alumacc
select -assert-count 1 t:$alu