From b5f38f834207fab3a563c55568c4543a3b5dcc1f Mon Sep 17 00:00:00 2001
From: Eddie Hung <eddie@fpgeh.com>
Date: Fri, 24 Apr 2020 14:13:45 -0700
Subject: opt_expr: const_xnor replacement to pad Y with 1'b1

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

(limited to 'passes')

diff --git a/passes/opt/opt_expr.cc b/passes/opt/opt_expr.cc
index 38dc09af5..d895fc691 100644
--- a/passes/opt/opt_expr.cc
+++ b/passes/opt/opt_expr.cc
@@ -575,7 +575,8 @@ void replace_const_cells(RTLIL::Design *design, RTLIL::Module *module, bool cons
 				if (cell->type.in(ID($xnor), ID($_XNOR_))) {
 					cover("opt.opt_expr.const_xnor");
 					// For consistency since simplemap does $xnor -> $_XOR_ + $_NOT_
-					replace_cell(assign_map, module, cell, "const_xnor", ID::Y, RTLIL::State::S1);
+					int width = cell->getParam(ID::Y_WIDTH).as_int();
+					replace_cell(assign_map, module, cell, "const_xnor", ID::Y, SigSpec(RTLIL::State::S1, width));
 					goto next_cell;
 				}
 				log_abort();
-- 
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