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ql_dsp: Improve cascading detection

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This commit is contained in:
Martin Povišer 2025-03-11 10:33:00 +01:00
parent 0615209562
commit fde681623c
1 changed files with 5 additions and 1 deletions
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6
techlibs/quicklogic/ql_dsp.cc
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@ -55,7 +55,11 @@ bool promote(Module *m, Cell *cell) {
widen_output(ID(b_cout_o), 18);
widen_output(ID(z_cout_o), 50);
if (cell->hasPort(ID(a_cin_i)) || cell->hasPort(ID(b_cin_i)) || cell->hasPort(ID(z_cin_i))) {
auto uses_port = [&](IdString port_name) {
return cell->hasPort(port_name) && !cell->getPort(port_name).is_fully_undef();
};
if (uses_port(ID(a_cin_i)) || uses_port(ID(b_cin_i)) || uses_port(ID(z_cin_i))) {
log_error("Cannot promote %s (type %s) with cascading paths\n", log_id(cell), log_id(cell->type));
}