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splitnets: handle single-bit vectors consistently

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This commit is contained in:
Emil J. Tywoniak 2025-06-05 10:58:06 +02:00
parent c21cd300a0
commit 239c265093
2 changed files with 37 additions and 1 deletions
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6
passes/cmds/splitnets.cc
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@ -207,8 +207,12 @@ struct SplitnetsPass : public Pass {
else
{
for (auto wire : module->wires()) {
if (wire->width > 1 && (wire->port_id == 0 || flag_ports) && design->selected(module, wire))
if (((wire->width > 1) || (wire->has_attribute(ID::single_bit_vector)))
&& (wire->port_id == 0 || flag_ports)
&& design->selected(module, wire)) {
wire->attributes.erase(ID::single_bit_vector);
worker.splitmap[wire] = std::vector<RTLIL::SigBit>();
}
}
for (auto &it : worker.splitmap)

32
tests/various/splitnets.ys Normal file
View file

@ -0,0 +1,32 @@
read_verilog <<EOT
module test_module (
a,
b,
x,
y
);
input [0:0] a;
output [0:0] b;
input [1:0] x;
output [1:0] y;
assign b = a;
assign y = x;
endmodule
EOT
proc
splitnets -ports -format __:
select -assert-count 0 w:a;
select -assert-count 1 w:a_0_;
select -assert-count 0 w:a_1_;
select -assert-count 0 w:b;
select -assert-count 1 w:b_0_;
select -assert-count 0 w:b_1_;
select -assert-count 0 w:x;
select -assert-count 1 w:x_0_;
select -assert-count 1 w:x_1_;
select -assert-count 0 w:y;
select -assert-count 1 w:y_0_;
select -assert-count 1 w:y_1_;