diff options
Diffstat (limited to 'passes/opt')
| -rw-r--r-- | passes/opt/opt_reduce.cc | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/passes/opt/opt_reduce.cc b/passes/opt/opt_reduce.cc index 1e91d160..a0c7a027 100644 --- a/passes/opt/opt_reduce.cc +++ b/passes/opt/opt_reduce.cc @@ -266,6 +266,21 @@ struct OptReduceWorker mem_wren_sigs.add(assign_map(cell->connections["\\D"])); } + bool keep_expanding_mem_wren_sigs = true; + while (keep_expanding_mem_wren_sigs) { + keep_expanding_mem_wren_sigs = false; + for (auto &cell_it : module->cells) { + RTLIL::Cell *cell = cell_it.second; + if (cell->type == "$mux" && mem_wren_sigs.check_any(assign_map(cell->connections["\\Y"]))) { + if (!mem_wren_sigs.check_all(assign_map(cell->connections["\\A"])) || + !mem_wren_sigs.check_all(assign_map(cell->connections["\\B"]))) + keep_expanding_mem_wren_sigs = true; + mem_wren_sigs.add(assign_map(cell->connections["\\A"])); + mem_wren_sigs.add(assign_map(cell->connections["\\B"])); + } + } + } + while (did_something) { did_something = false; |