yosys/tests/alumacc/macc_b_port_compat.ys

# We don't set the B port on $macc cells anymore,
# test compatibility with older RTLIL files which can
# have the B port populated

read_verilog <<EOF
module gold(input signed [2:0] a1, input signed [2:0] b1,
			input [1:0] a2, input [3:0] b2, input c, input d, output signed [3:0] y);
  wire signed [3:0] ab1;
  assign ab1 = a1 * b1;
  assign y = ab1 + a2*b2 + c + d + 1;
endmodule
EOF
prep

# test the model for $macc including the retired B parameter
# matches the gold module
read_rtlil <<EOF
attribute \src "<<EOF:1.1-4.10"
module \gate
  wire width 3 input 1 signed \a1
  wire width 2 input 3 \a2
  wire width 3 input 2 signed \b1
  wire width 4 input 4 \b2
  wire input 5 \c
  wire input 6 \d
  wire width 4 output 7 signed \y

  cell $macc $1
    parameter \A_WIDTH 12
    parameter \B_WIDTH 3
    parameter \CONFIG 20'01010000011011010011
    parameter \CONFIG_WIDTH 20
    parameter \Y_WIDTH 4
    connect \A { \a2 \b2 \b1 \a1 }
    connect \B { \d \c 1'1 }
    connect \Y \y
  end
end
EOF

design -save gold_gate
equiv_make gold gate equiv
equiv_induct equiv
equiv_status -assert equiv

design -load gold_gate
maccmap gate
equiv_make gold gate equiv
equiv_induct equiv
equiv_status -assert equiv