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-rw-r--r--frontends/ast/genrtlil.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/frontends/ast/genrtlil.cc b/frontends/ast/genrtlil.cc
index fa16b2f2f..9546558aa 100644
--- a/frontends/ast/genrtlil.cc
+++ b/frontends/ast/genrtlil.cc
@@ -1067,6 +1067,7 @@ RTLIL::SigSpec AstNode::genRTLIL(int width_hint, bool sign_hint)
wire->port_input = is_input;
wire->port_output = is_output;
wire->upto = range_swapped;
+ wire->is_signed = is_signed;
for (auto &attr : attributes) {
if (attr.second->type != AST_CONSTANT)