From da487c4f31fd2d97c0d7110010e7379e5445ceb0 Mon Sep 17 00:00:00 2001 From: Eddie Hung Date: Sat, 15 Jun 2019 09:08:18 -0700 Subject: [PATCH] For now, short $_DFF_[NP]_ from ff_map.v at re-integration --- passes/techmap/abc9.cc | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/passes/techmap/abc9.cc b/passes/techmap/abc9.cc index f7f2e862a..69b0c1192 100644 --- a/passes/techmap/abc9.cc +++ b/passes/techmap/abc9.cc @@ -511,6 +511,7 @@ void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::stri // Remove all AND, NOT, and ABC box instances // in preparation for stitching mapped_mod in + // Short $_DFF_[NP]_ cells used by ABC (FIXME) dict erased_boxes; for (auto it = module->cells_.begin(); it != module->cells_.end(); ) { RTLIL::Cell* cell = it->second; @@ -518,6 +519,13 @@ void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::stri it = module->cells_.erase(it); continue; } + else if (cell->type.in("$_DFF_N_", "$_DFF_P_")) { + SigBit D = cell->getPort("\\D"); + SigBit Q = cell->getPort("\\Q"); + module->connect(Q, D); + it = module->cells_.erase(it); + continue; + } RTLIL::Module* box_module = design->module(cell->type); if (box_module && box_module->attributes.count("\\abc_box_id")) { erased_boxes.insert(std::make_pair(it->first, std::move(cell->parameters))); -- 2.30.2