mirror of
https://github.com/YosysHQ/yosys
synced 2025-04-06 01:24:10 +00:00
62d41d4639
Previously, opt_clean would reconnect all ports (including FF Q ports) to a "canonical" SigBit chosen by complex rules, but would leave the init attribute on the old wire. This change applies the same canonicalization rules to the init attributes, ensuring that init moves to wherever the Q port moved. Part of another jab at #2920.
187 lines
4.8 KiB
Plaintext
187 lines
4.8 KiB
Plaintext
read_verilog << EOT
|
|
module ibuf ((* iopad_external_pin *) input i, output o); endmodule
|
|
module obuf (input i, (* iopad_external_pin *) output o); endmodule
|
|
module obuft (input i, input oe, (* iopad_external_pin *) output o); endmodule
|
|
module iobuf (input i, input oe, output o, (* iopad_external_pin *) inout io); endmodule
|
|
|
|
module buf_inside (input i, output o);
|
|
obuf b (.i(i), .o(o));
|
|
endmodule
|
|
|
|
module a(input i, output o);
|
|
assign o = i;
|
|
endmodule
|
|
|
|
module b(input i, output o);
|
|
ibuf b (.i(i), .o(o));
|
|
endmodule
|
|
|
|
module c(input i, output o);
|
|
obuf b (.i(i), .o(o));
|
|
endmodule
|
|
|
|
module d(input i, oe, output o, o2, o3);
|
|
assign o = oe ? i : 1'bz;
|
|
assign o2 = o;
|
|
assign o3 = ~o;
|
|
endmodule
|
|
|
|
module e(input i, oe, inout io, output o2, o3);
|
|
assign io = oe ? i : 1'bz;
|
|
assign o2 = io;
|
|
assign o3 = ~io;
|
|
endmodule
|
|
|
|
module f(output o, o2);
|
|
assign o = 1'bz;
|
|
endmodule
|
|
|
|
module g(inout io, output o);
|
|
assign o = io;
|
|
endmodule
|
|
|
|
module h(inout io, output o, input i);
|
|
assign io = i;
|
|
assign o = io;
|
|
endmodule
|
|
|
|
module i(input i, output o);
|
|
buf_inside b (.i(i), .o(o));
|
|
endmodule
|
|
|
|
module j(input i, output o);
|
|
wire tmp;
|
|
obuf b (.i(i), .o(tmp));
|
|
assign o = tmp;
|
|
endmodule
|
|
|
|
module k(inout o, o2);
|
|
assign o = 1'bz;
|
|
endmodule
|
|
|
|
EOT
|
|
|
|
opt_clean
|
|
tribuf
|
|
simplemap
|
|
iopadmap -bits -inpad ibuf o:i -outpad obuf i:o -toutpad obuft oe:i:o -tinoutpad iobuf oe:o:i:io a b c d e f g h i j k
|
|
opt_clean
|
|
hierarchy -check
|
|
check
|
|
|
|
select -assert-count 1 a/t:ibuf
|
|
select -assert-count 1 a/t:obuf
|
|
select -set ib w:i %a %co a/t:ibuf %i
|
|
select -set ob w:o %a %ci a/t:obuf %i
|
|
select -assert-count 1 @ib
|
|
select -assert-count 1 @ob
|
|
select -assert-count 1 @ib %co %co @ob %i
|
|
|
|
select -assert-count 1 b/t:ibuf
|
|
select -assert-count 1 b/t:obuf
|
|
select -set ib w:i %a %co b/t:ibuf %i
|
|
select -set ob w:o %a %ci b/t:obuf %i
|
|
select -assert-count 1 @ib
|
|
select -assert-count 1 @ob
|
|
select -assert-count 1 @ib %co %co @ob %i
|
|
|
|
select -assert-count 1 c/t:ibuf
|
|
select -assert-count 1 c/t:obuf
|
|
select -set ib w:i %a %co c/t:ibuf %i
|
|
select -set ob w:o %a %ci c/t:obuf %i
|
|
select -assert-count 1 @ib
|
|
select -assert-count 1 @ob
|
|
select -assert-count 1 @ib %co %co @ob %i
|
|
|
|
select -assert-count 2 d/t:ibuf
|
|
select -assert-count 2 d/t:obuf
|
|
select -assert-count 1 d/t:obuft
|
|
select -set ib w:i %a %co d/t:ibuf %i
|
|
select -set oeb w:oe %a %co d/t:ibuf %i
|
|
select -set ob w:o %a %ci d/t:obuft %i
|
|
select -set o2b w:o2 %a %ci d/t:obuf %i
|
|
select -set o3b w:o3 %a %ci d/t:obuf %i
|
|
select -assert-count 1 @ib
|
|
select -assert-count 1 @oeb
|
|
select -assert-count 1 @ob
|
|
select -assert-count 1 @o2b
|
|
select -assert-count 1 @o3b
|
|
select -assert-count 1 @ib %co %co @ob %i
|
|
select -assert-count 1 @oeb %co %co @ob %i
|
|
select -assert-count 1 @ib %co %co @o2b %i
|
|
select -assert-count 1 @ib %co %co t:$_NOT_ %i
|
|
select -assert-count 1 @o3b %ci %ci t:$_NOT_ %i
|
|
|
|
select -assert-count 2 e/t:ibuf
|
|
select -assert-count 2 e/t:obuf
|
|
select -assert-count 1 e/t:iobuf
|
|
select -set ib w:i %a %co e/t:ibuf %i
|
|
select -set oeb w:oe %a %co e/t:ibuf %i
|
|
select -set iob w:io %a %ci e/t:iobuf %i
|
|
select -set o2b w:o2 %a %ci e/t:obuf %i
|
|
select -set o3b w:o3 %a %ci e/t:obuf %i
|
|
select -assert-count 1 @ib
|
|
select -assert-count 1 @oeb
|
|
select -assert-count 1 @iob
|
|
select -assert-count 1 @o2b
|
|
select -assert-count 1 @o3b
|
|
select -assert-count 1 @ib %co %co @iob %i
|
|
select -assert-count 1 @oeb %co %co @iob %i
|
|
select -assert-count 1 @iob %co %co @o2b %i
|
|
select -assert-count 1 @iob %co %co t:$_NOT_ %i
|
|
select -assert-count 1 @o3b %ci %ci t:$_NOT_ %i
|
|
|
|
select -assert-count 2 f/t:obuft
|
|
|
|
select -assert-count 1 g/t:obuf
|
|
select -assert-count 1 g/t:iobuf
|
|
|
|
select -assert-count 1 h/t:ibuf
|
|
select -assert-count 1 h/t:iobuf
|
|
select -assert-count 1 h/t:obuf
|
|
|
|
select -assert-count 1 i/t:ibuf
|
|
select -assert-count 0 i/t:obuf
|
|
|
|
select -assert-count 1 j/t:ibuf
|
|
select -assert-count 1 j/t:obuf
|
|
|
|
select -assert-count 2 k/t:iobuf
|
|
|
|
|
|
# Check that \init attributes get moved from output buffer
|
|
# to buffer input
|
|
design -reset
|
|
read_verilog << EOT
|
|
module obuf (input i, (* iopad_external_pin *) output o); endmodule
|
|
module obuft (input i, input oe, (* iopad_external_pin *) output o); endmodule
|
|
module iobuf (input i, input oe, output o, (* iopad_external_pin *) inout io); endmodule
|
|
module sub(input i, output o); endmodule
|
|
|
|
module a(input i, (* init=1'b1 *) output o);
|
|
sub s(.i(i), .o(o));
|
|
endmodule
|
|
|
|
module b(input [1:0] i, oe, (* init=2'b1x *) output [1:0] o);
|
|
wire [1:0] w;
|
|
sub s1(.i(i[0]), .o(w[0]));
|
|
sub s2(.i(i[1]), .o(w[1]));
|
|
assign o = oe ? w : 2'bz;
|
|
endmodule
|
|
|
|
module c(input i, oe, (* init=1'b0 *) inout io, output o1, o2);
|
|
assign io = oe ? i : 1'bz;
|
|
assign {o1,o2} = {io,io};
|
|
endmodule
|
|
EOT
|
|
opt_clean
|
|
tribuf
|
|
simplemap
|
|
iopadmap -bits -outpad obuf i:o -toutpad obuft oe:i:o -tinoutpad iobuf oe:o:i:io
|
|
select -assert-count 1 a/c:s %co a/a:init=1'b1 %i
|
|
select -assert-count 1 a/a:init
|
|
select -assert-count 1 b/c:s* %co %a b/a:init=2'b1x %i
|
|
select -assert-count 1 b/a:init
|
|
select -assert-count 1 c/t:iobuf %co c/a:init=1'b0 %i
|
|
select -assert-count 1 c/a:init
|