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Merge pull request #4799 from povik/wrapcell-unused

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wrapcell: Optionally track unused outputs
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Martin Povišer 2024-12-10 21:16:28 +01:00 • committed by GitHub
commit 4bd6061709
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2 changed files with 192 additions and 28 deletions
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32
tests/various/wrapcell.ys
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@ -18,8 +18,40 @@ EOF
wreduce
wrapcell -setattr foo -formatattr bar w{Y_WIDTH} -name OR_{A_WIDTH}_{B_WIDTH}_{Y_WIDTH}
check -assert
select -assert-count 2 top/t:OR_2_3_3
select -assert-count 1 top/t:OR_3_4_4
select -assert-none top/t:OR_2_3_3 top/t:OR_3_4_4 %% top/t:* %D
select -assert-mod-count 2 OR_2_3_3 OR_3_4_4
select -assert-mod-count 2 A:bar=w3 A:bar=w4
design -reset
read_verilog <<EOF
module top(
input [1:0] a,
input [2:0] b,
output [2:0] y,
input [2:0] a2,
input [3:0] b2,
output [3:0] y2,
input [1:0] a3,
input [2:0] b3,
output [2:0] y3
);
assign y = a | (*keep*) b;
assign y2 = a2 | (*keep*) b2;
wire [2:0] y3_ = a3 | (*keep*) b3;
assign y3 = {y3_[2], y3_[0]};
endmodule
EOF
opt_clean
wreduce
wrapcell -setattr foo -formatattr bar w{Y_WIDTH} -name OR_{A_WIDTH}_{B_WIDTH}_{Y_WIDTH}{%unused}
check -assert
select -assert-count 1 top/t:OR_2_3_3
select -assert-count 1 top/t:OR_2_3_3_unused_Y[1]
select -assert-count 1 top/t:OR_3_4_4
select -assert-none top/t:OR_2_3_3 top/t:OR_3_4_4 top/t:OR_2_3_3_unused_Y[1] %% top/t:* %D
select -assert-mod-count 2 OR_2_3_3 OR_3_4_4
select -assert-mod-count 3 A:bar=w3 A:bar=w4