diff options
| -rw-r--r-- | passes/equiv/equiv_induct.cc | 5 | ||||
| -rw-r--r-- | passes/equiv/equiv_simple.cc | 8 |
2 files changed, 10 insertions, 3 deletions
diff --git a/passes/equiv/equiv_induct.cc b/passes/equiv/equiv_induct.cc index 37aec50cd..5f14416da 100644 --- a/passes/equiv/equiv_induct.cc +++ b/passes/equiv/equiv_induct.cc @@ -55,7 +55,10 @@ struct EquivInductWorker for (auto cell : cells) { if (!satgen.importCell(cell, step) && !cell_warn_cache.count(cell)) { - log_warning("No SAT model available for cell %s (%s).\n", log_id(cell), log_id(cell->type)); + if (RTLIL::builtin_ff_cell_types().count(cell->type)) + log_warning("No SAT model available for async FF cell %s (%s). Consider running `async2sync` or `clk2fflogic` first.\n", log_id(cell), log_id(cell->type)); + else + log_warning("No SAT model available for cell %s (%s).\n", log_id(cell), log_id(cell->type)); cell_warn_cache.insert(cell); } if (cell->type == ID($equiv)) { diff --git a/passes/equiv/equiv_simple.cc b/passes/equiv/equiv_simple.cc index 408c5a793..8d9e870da 100644 --- a/passes/equiv/equiv_simple.cc +++ b/passes/equiv/equiv_simple.cc @@ -184,8 +184,12 @@ struct EquivSimpleWorker for (auto cell : problem_cells) { auto key = pair<Cell*, int>(cell, step+1); - if (!imported_cells_cache.count(key) && !satgen.importCell(cell, step+1)) - log_cmd_error("No SAT model available for cell %s (%s).\n", log_id(cell), log_id(cell->type)); + if (!imported_cells_cache.count(key) && !satgen.importCell(cell, step+1)) { + if (RTLIL::builtin_ff_cell_types().count(cell->type)) + log_cmd_error("No SAT model available for async FF cell %s (%s). Consider running `async2sync` or `clk2fflogic` first.\n", log_id(cell), log_id(cell->type)); + else + log_cmd_error("No SAT model available for cell %s (%s).\n", log_id(cell), log_id(cell->type)); + } imported_cells_cache.insert(key); } |