From 36a88be609b942f9bc1a5e44ecdbe432a3fa56e8 Mon Sep 17 00:00:00 2001 From: Eddie Hung Date: Mon, 9 Dec 2019 14:28:54 -0800 Subject: [PATCH] ice40_wrapcarry -unwrap to preserve 'src' attribute --- passes/pmgen/ice40_wrapcarry.cc | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/passes/pmgen/ice40_wrapcarry.cc b/passes/pmgen/ice40_wrapcarry.cc index 4bddece30..6e154147f 100644 --- a/passes/pmgen/ice40_wrapcarry.cc +++ b/passes/pmgen/ice40_wrapcarry.cc @@ -121,16 +121,24 @@ struct Ice40WrapCarryPass : public Pass { lut->setPort(ID(A), {cell->getPort(ID(I0)), cell->getPort(ID(A)), cell->getPort(ID(B)), cell->getPort(ID(I3)) }); lut->setPort(ID(Y), cell->getPort(ID(O))); + Const src; for (const auto &a : cell->attributes) if (a.first.begins_with("\\SB_CARRY.\\")) carry->attributes[a.first.c_str() + strlen("\\SB_CARRY.")] = a.second; else if (a.first.begins_with("\\SB_LUT4.\\")) lut->attributes[a.first.c_str() + strlen("\\SB_LUT4.")] = a.second; - else if (a.first.in(ID(SB_LUT4.name), ID::keep, ID(module_not_derived), ID(src))) + else if (a.first == ID(src)) + src = a.second; + else if (a.first.in(ID(SB_LUT4.name), ID::keep, ID(module_not_derived))) continue; else log_abort(); + if (!src.empty()) { + carry->attributes.insert(std::make_pair(ID(src), src)); + lut->attributes.insert(std::make_pair(ID(src), src)); + } + module->remove(cell); } } -- 2.30.2