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abc9: not enough to techmap_fail on (* init=1 *), hide them using $__

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This commit is contained in:
Eddie Hung 2020-04-16 12:08:59 -07:00
parent 5ad3a85288
commit 722540dbf9
4 changed files with 48 additions and 12 deletions
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23
tests/various/abc9.ys
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@ -50,7 +50,7 @@ $_DFF_P_ ff(.C(clk), .D(d), .Q(w));
assign q = w;
endmodule
EOT
equiv_opt abc9 -lut 4 -dff
equiv_opt -assert abc9 -lut 4 -dff
design -load postopt
cd abc9_test036
select -assert-count 1 t:$_DFF_P_
@ -69,8 +69,27 @@ specify
endspecify
endmodule
module top(input [1:0] i, output o);
module abc9_test037(input [1:0] i, output o);
LUT2 #(.mask(4'b0)) lut (.i(i), .o(o));
endmodule
EOT
abc9
design -reset
read_verilog -icells <<EOT
module abc9_test038(input clk, output w, x, y);
(* init=1'b1 *) wire w;
$_DFF_N_ ff1(.C(clk), .D(1'b1), .Q(w));
(* init=1'bx *) wire x;
$_DFF_N_ ff2(.C(clk), .D(1'b0), .Q(x));
(* init=1'b0 *) wire y;
$_DFF_N_ ff3(.C(clk), .D(1'b0), .Q(y));
endmodule
EOT
simplemap
equiv_opt abc9 -lut 4 -dff
design -load postopt
cd abc9_test038
select -assert-count 2 t:$_DFF_N_
select -assert-none c:ff1 c:ff2 %% c:* %D