From 9717495401e58a3d0a41113b541442227daa7cc3 Mon Sep 17 00:00:00 2001 From: Clifford Wolf Date: Wed, 23 Mar 2016 08:56:08 +0100 Subject: [PATCH] Fixed handling of inverters (aka 1-input luts) in nlutmap --- passes/techmap/nlutmap.cc | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/passes/techmap/nlutmap.cc b/passes/techmap/nlutmap.cc index 7ece40059..f5e77722e 100644 --- a/passes/techmap/nlutmap.cc +++ b/passes/techmap/nlutmap.cc @@ -64,7 +64,7 @@ struct NlutmapWorker { vector available_luts = config.luts; - while (!available_luts.empty()) + while (GetSize(available_luts) > 1) { int n_luts = available_luts.back(); int lut_size = GetSize(available_luts); @@ -84,7 +84,7 @@ struct NlutmapWorker if (cell->type != "$lut" || mapped_cells.count(cell)) continue; - if (GetSize(cell->getPort("\\A")) == lut_size) + if (GetSize(cell->getPort("\\A")) == lut_size || lut_size == 2) candidate_ratings[cell] = 0; for (auto &conn : cell->connections()) -- 2.30.2