From: Clifford Wolf <clifford@clifford.at>
Date: Fri, 8 Jul 2016 09:41:26 +0000 (+0200)
Subject: In BLIF, a .names without entries already always outputs 0
X-Git-Tag: yosys-0.7~186^2~1
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=72149aba2e8fece72450a81142a44d123154fd12;p=yosys.git

In BLIF, a .names without entries already always outputs 0
---

diff --git a/backends/blif/blif.cc b/backends/blif/blif.cc
index 93953049a..d5787c23a 100644
--- a/backends/blif/blif.cc
+++ b/backends/blif/blif.cc
@@ -351,24 +351,13 @@ struct BlifDumper
 				f << stringf(" %s", cstr(output));
 				f << stringf("\n");
 				RTLIL::SigSpec mask = cell->parameters.at("\\LUT");
-				bool one = false;
 				for (int i = 0; i < (1 << width); i++)
 					if (mask[i] == RTLIL::S1) {
 						for (int j = width-1; j >= 0; j--) {
 							f << ((i>>j)&1 ? '1' : '0');
 						}
 						f << " 1\n";
-						one = true;
 					}
-				/* For some reason, sometimes we get LUTs with
-				 * an all zero mask, which won't give any
-				 * .names entries, so write one entry with
-				 * all don't cares */
-				if (!one) {
-					for (int j = width-1; j >= 0; j--)
-						f << '-';
-					f << " 0\n";
-				}
 				continue;
 			}