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de79978372
* xilinx: eliminate SCCs from DSP48E1 model * xilinx: add SCC test for DSP48E1 * Update techlibs/xilinx/cells_sim.v * xilinx: Gate DSP48E1 being a whitebox behind ALLOW_WHITEBOX_DSP48E1 Have a test that checks it works through ABC9 when enabled
37 lines
898 B
Text
37 lines
898 B
Text
read_verilog <<EOT
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module top(input [24:0] A, input [17:0] B, output [47:0] P);
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DSP48E1 #(.PREG(0)) dsp(.A(A), .B(B), .P(P));
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endmodule
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EOT
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techmap -autoproc -wb -map +/xilinx/cells_sim.v
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opt
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scc -expect 0
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design -reset
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read_verilog <<EOT
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module top(input signed [24:0] A, input signed [17:0] B, output [47:0] P);
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assign P = A * B;
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endmodule
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EOT
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synth_xilinx -abc9
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techmap -autoproc -wb -map +/xilinx/cells_sim.v
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opt -full -fine
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select -assert-count 1 t:$mul
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select -assert-count 0 t:* t:$mul %D
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design -reset
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read_verilog -icells -formal <<EOT
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module top(output [42:0] P);
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\$__MUL25X18 mul (.A(42), .B(42), .Y(P));
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assert property (P == 42*42);
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endmodule
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EOT
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techmap -map +/xilinx/xc7_dsp_map.v
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verilog_defaults -add -D ALLOW_WHITEBOX_DSP48E1
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synth_xilinx -abc9
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techmap -autoproc -wb -map +/xilinx/cells_sim.v
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opt -full -fine
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select -assert-count 0 t:* t:$assert %d
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sat -verify -prove-asserts
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