diff options
Diffstat (limited to 'passes/opt/opt_share.cc')
| -rw-r--r-- | passes/opt/opt_share.cc | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/passes/opt/opt_share.cc b/passes/opt/opt_share.cc index c53fb3113..2c456705c 100644 --- a/passes/opt/opt_share.cc +++ b/passes/opt/opt_share.cc @@ -108,12 +108,13 @@ bool cell_supported(RTLIL::Cell *cell) return false; } -std::map<IdString, IdString> mergeable_type_map{ - {ID($sub), ID($add)}, -}; +std::map<IdString, IdString> mergeable_type_map; bool mergeable(RTLIL::Cell *a, RTLIL::Cell *b) { + if (mergeable_type_map.empty()) { + mergeable_type_map.insert({ID($sub), ID($add)}); + } auto a_type = a->type; if (mergeable_type_map.count(a_type)) a_type = mergeable_type_map.at(a_type); |