From dc30b034f74065f5a45badad7b22f4a721ecc16e Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Thu, 16 Apr 2015 11:47:59 +0200
Subject: Fixed "dff2dffe -direct-match"

---
 techlibs/ice40/synth_ice40.cc | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'techlibs')

diff --git a/techlibs/ice40/synth_ice40.cc b/techlibs/ice40/synth_ice40.cc
index b683929b..c5d8f5ed 100644
--- a/techlibs/ice40/synth_ice40.cc
+++ b/techlibs/ice40/synth_ice40.cc
@@ -72,6 +72,7 @@ struct SynthIce40Pass : public Pass {
 		log("    map_ffs:\n");
 		log("        dff2dffe -direct-match $_DFF_*\n");
 		log("        techmap -map +/ice40/cells_map.v\n");
+		log("        opt_const -mux_undef\n");
 		log("        simplemap\n");
 		log("        clean\n");
 		log("\n");
@@ -145,6 +146,7 @@ struct SynthIce40Pass : public Pass {
 		{
 			Pass::call(design, "dff2dffe -direct-match $_DFF_*");
 			Pass::call(design, "techmap -map +/ice40/cells_map.v");
+			Pass::call(design, "opt_const -mux_undef");
 			Pass::call(design, "simplemap");
 			Pass::call(design, "clean");
 		}
-- 
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