From: Marcin Kościelnicki <mwk@0x04.net>
Date: Mon, 13 Jan 2020 13:49:31 +0000 (+0100)
Subject: edif: Just ignore connections to 'z
X-Git-Tag: working-ls180~859^2
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=55f86eda36ed9288528c2216972d5b49acfca54f;p=yosys.git

edif: Just ignore connections to 'z

Connecting a const 'z to a net should be equivalent to not connecting it
at all, so let's just ignore such connections on output.
---

diff --git a/backends/edif/edif.cc b/backends/edif/edif.cc
index 6d9469538..e9beace83 100644
--- a/backends/edif/edif.cc
+++ b/backends/edif/edif.cc
@@ -404,6 +404,8 @@ struct EdifBackend : public Backend {
 						for (auto &ref : it.second)
 							log_warning("Exporting x-bit on %s as zero bit.\n", ref.c_str());
 						sig = RTLIL::State::S0;
+					} else if (sig == RTLIL::State::Sz) {
+						continue;
 					} else {
 						for (auto &ref : it.second)
 							log_error("Don't know how to handle %s on %s.\n", log_signal(sig), ref.c_str());