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This commit is contained in:
Stan Lee 2026-06-02 15:45:52 -07:00
parent 96ee0f6ec5
commit 09b2bdfb27
1 changed files with 3 additions and 3 deletions
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6
passes/silimate/annotate_ff_width.cc
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@ -53,10 +53,10 @@ struct AnnotateFfWidthPass : public Pass {
break; break;
extra_args(args, argidx, design); extra_args(args, argidx, design);
// Loop through all flip-flops and annotate with their width // Loop through all flip-flops in a module and annotate with their width
int annotated = 0; int annotated = 0;
for (auto module : design->selected_modules()) { for (auto module : design->selected_modules()) {
// Pass 1: count flip-flop cells per base name. // First, count the number of flip-flops of the same base name.
dict<std::string, int> name_counts; dict<std::string, int> name_counts;
std::vector<std::pair<RTLIL::Cell *, std::string>> ff_cells; std::vector<std::pair<RTLIL::Cell *, std::string>> ff_cells;
for (auto cell : module->selected_cells()) { for (auto cell : module->selected_cells()) {
@ -66,7 +66,7 @@ struct AnnotateFfWidthPass : public Pass {
name_counts[base]++; name_counts[base]++;
ff_cells.push_back({cell, base}); ff_cells.push_back({cell, base});
} }
// Pass 2: annotate each flip-flop with the count for its base name. // Then, annotate each flip-flop with the count for its base name.
for (auto &it : ff_cells) { for (auto &it : ff_cells) {
int width = name_counts[it.second]; int width = name_counts[it.second];
it.first->set_string_attribute(ID(ff_width), std::to_string(width)); it.first->set_string_attribute(ID(ff_width), std::to_string(width));