From bc133317f10a66117859c85160a03d9b34a319bb Mon Sep 17 00:00:00 2001 From: Iztok Jeras Date: Sat, 27 Jun 2026 02:00:10 +0200 Subject: [PATCH] dfflibmap: recommend running opt_merge pass after dfflibmap --- passes/techmap/dfflibmap.cc | 2 ++ 1 file changed, 2 insertions(+) diff --git a/passes/techmap/dfflibmap.cc b/passes/techmap/dfflibmap.cc index 08d4d651c..a4aee8bf6 100644 --- a/passes/techmap/dfflibmap.cc +++ b/passes/techmap/dfflibmap.cc @@ -853,6 +853,8 @@ struct DfflibmapPass : public Pass { log("\n"); log("This pass may add inverters as needed. Therefore it is recommended to\n"); log("first run this pass and then map the logic paths to the target technology.\n"); + log("Since inverters are added for each technology cell, an opt_merge pass\n"); + log("would reduce the redundancy.\n"); log("\n"); log("When called with -prepare, this command will convert the internal FF/LATCH cells\n"); log("to the internal cell types that best match the cells found in the given\n");