From: whitequark <whitequark@whitequark.org>
Date: Wed, 2 Jan 2019 08:25:55 +0000 (+0000)
Subject: synth_ice40: use 4-LUT coarse synthesis mode.
X-Git-Tag: yosys-0.9~349^2~2^2
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=17b283135658b84a0dfeec8b35f7d2bfe782be19;p=yosys.git

synth_ice40: use 4-LUT coarse synthesis mode.
---

diff --git a/techlibs/ice40/synth_ice40.cc b/techlibs/ice40/synth_ice40.cc
index c2aed873b..4c4fdf7be 100644
--- a/techlibs/ice40/synth_ice40.cc
+++ b/techlibs/ice40/synth_ice40.cc
@@ -226,7 +226,7 @@ struct SynthIce40Pass : public ScriptPass
 
 		if (check_label("coarse"))
 		{
-			run("synth -run coarse");
+			run("synth -lut 4 -run coarse");
 		}
 
 		if (!nobram && check_label("bram", "(skip if -nobram)"))