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Add more tests

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Eddie Hung 2019-06-26 16:07:07 -07:00
parent 9cba05285b
commit ca1fac7c47
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tests/various/muxcover.ys
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@ -356,3 +356,155 @@ design -import gate -as gate
miter -equiv -flatten -make_assert -make_outputs gold gate miter
sat -verify -prove-asserts -show-ports miter
## mux_if_bal_5_1 :: https://github.com/YosysHQ/yosys/issues/1132
design -reset
read_verilog -formal <<EOT
module mux_if_bal_5_1 #(parameter N=5, parameter W=1) (input [N*W-1:0] i, input [$clog2(N)-1:0] s, output reg [W-1:0] o);
always @* begin
o <= {{W{{1'bx}}}};
if (s[0] == 1'b0)
if (s[1] == 1'b0)
if (s[2] == 1'b0)
o <= i[0*W+:W];
else
o <= i[1*W+:W];
else
if (s[2] == 1'b0)
o <= i[2*W+:W];
else
o <= i[3*W+:W];
else
if (s[1] == 1'b0)
if (s[2] == 1'b0)
o <= i[4*W+:W];
end
endmodule
EOT
prep
design -save gold
wreduce
opt -full
techmap
muxcover -mux8=350
clean
opt_expr -mux_bool
select -assert-count 0 t:$_MUX_
select -assert-count 0 t:$_MUX4_
select -assert-count 1 t:$_MUX8_
select -assert-count 0 t:$_MUX16_
techmap -map +/simcells.v t:$_MUX8_
design -stash gate
design -import gold -as gold
design -import gate -as gate
miter -equiv -flatten -make_assert -make_outputs -ignore_gold_x gold gate miter
sat -verify -prove-asserts -show-ports miter
## mux_if_bal_5_1 (nodecode) :: https://github.com/YosysHQ/yosys/issues/1132
design -load gold
wreduce
opt -full
techmap
muxcover -mux8=350 -nodecode
clean
opt_expr -mux_bool
select -assert-count 0 t:$_MUX_
select -assert-count 0 t:$_MUX4_
select -assert-count 1 t:$_MUX8_
select -assert-count 0 t:$_MUX16_
techmap -map +/simcells.v t:$_MUX8_
design -stash gate
design -import gold -as gold
design -import gate -as gate
miter -equiv -flatten -make_assert -make_outputs -ignore_gold_x gold gate miter
sat -verify -prove-asserts -show-ports miter
## mux_if_bal_9_1 :: https://github.com/YosysHQ/yosys/issues/1132
design -reset
read_verilog -formal <<EOT
module mux_if_bal_9_1 #(parameter N=9, parameter W=1) (input [N*W-1:0] i, input [$clog2(N)-1:0] s, output reg [W-1:0] o);
always @* begin
o <= {{W{{1'bx}}}};
if (s[3] == 1'b0)
if (s[2] == 1'b0)
if (s[1] == 1'b0)
if (s[0] == 1'b0)
o <= i[0*W+:W];
else
o <= i[1*W+:W];
else
if (s[0] == 1'b0)
o <= i[2*W+:W];
else
o <= i[3*W+:W];
else
if (s[1] == 1'b0)
if (s[0] == 1'b0)
o <= i[4*W+:W];
else
o <= i[5*W+:W];
else
if (s[0] == 1'b0)
o <= i[6*W+:W];
else
o <= i[7*W+:W];
else
if (s[2] == 1'b0)
if (s[1] == 1'b0)
if (s[0] == 1'b0)
o <= i[8*W+:W];
end
endmodule
EOT
prep
design -save gold
wreduce
opt -full
techmap
muxcover -mux16=750
clean
opt_expr -mux_bool
select -assert-count 0 t:$_MUX_
select -assert-count 0 t:$_MUX4_
select -assert-count 0 t:$_MUX8_
select -assert-count 1 t:$_MUX16_
techmap -map +/simcells.v t:$_MUX16_
design -stash gate
design -import gold -as gold
design -import gate -as gate
miter -equiv -flatten -make_assert -make_outputs -ignore_gold_x gold gate miter
sat -verify -prove-asserts -show-ports miter
## mux_if_bal_9_1 (nodecode) :: https://github.com/YosysHQ/yosys/issues/1132
design -load gold
wreduce
opt -full
techmap
muxcover -mux16=750 -nodecode
clean
opt_expr -mux_bool
select -assert-count 0 t:$_MUX_
select -assert-count 0 t:$_MUX4_
select -assert-count 0 t:$_MUX8_
select -assert-count 1 t:$_MUX16_
techmap -map +/simcells.v t:$_MUX16_
design -stash gate
design -import gold -as gold
design -import gate -as gate
miter -equiv -flatten -make_assert -make_outputs -ignore_gold_x gold gate miter
sat -verify -prove-asserts -show-ports miter