From 9a892199f72bb08f78c868fe8ab5b8a63cf25f37 Mon Sep 17 00:00:00 2001
From: Eddie Hung <eddie@fpgeh.com>
Date: Wed, 11 Dec 2019 11:27:10 -0800
Subject: [PATCH] Suppress warning message for init[i] = 1'bx

---
 passes/sat/sat.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/passes/sat/sat.cc b/passes/sat/sat.cc
index 430bba1e8..436ac1b01 100644
--- a/passes/sat/sat.cc
+++ b/passes/sat/sat.cc
@@ -269,7 +269,8 @@ struct SatHelper
 				for (int i = 0; i < lhs.size(); i++) {
 					RTLIL::SigSpec bit = lhs.extract(i, 1);
 					if (rhs[i] == State::Sx || !satgen.initial_state.check_all(bit)) {
-						removed_bits.append(bit);
+						if (rhs[i] != State::Sx)
+							removed_bits.append(bit);
 						lhs.remove(i, 1);
 						rhs.remove(i, 1);
 						i--;
-- 
2.30.2