From: whitequark <whitequark@whitequark.org>
Date: Wed, 2 Jan 2019 10:21:58 +0000 (+0000)
Subject: opt_lut: reflect changes in sigmap.
X-Git-Tag: yosys-0.9~349^2~1^2
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c55dfb83693c6707ecb1d7dce7824a61e87eb44d;p=yosys.git

opt_lut: reflect changes in sigmap.

Otherwise, some LUTs will be missed during elimination.
---

diff --git a/passes/opt/opt_lut.cc b/passes/opt/opt_lut.cc
index a79a9a2da..b9a1ce7a7 100644
--- a/passes/opt/opt_lut.cc
+++ b/passes/opt/opt_lut.cc
@@ -271,6 +271,8 @@ struct OptLutWorker
 					}
 
 					module->connect(lut_output, value);
+					sigmap.add(lut_output, value);
+
 					module->remove(lut);
 					luts.erase(lut);
 					luts_arity.erase(lut);