From 349c3ee60fb30779d2c3061757c1cef3c19b9b73 Mon Sep 17 00:00:00 2001 From: whitequark Date: Mon, 13 Apr 2020 17:04:13 +0000 Subject: [PATCH] back.rtlil: don't emit connections to zero width ports. Fixes #335. --- nmigen/back/rtlil.py | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/nmigen/back/rtlil.py b/nmigen/back/rtlil.py index f683687..90c5ed9 100644 --- a/nmigen/back/rtlil.py +++ b/nmigen/back/rtlil.py @@ -880,7 +880,8 @@ def _convert_fragment(builder, fragment, name_map, hierarchy): if not isinstance(subfragment, ir.Instance): for signal in value._rhs_signals(): compiler_state.resolve_curr(signal, prefix=sub_name) - sub_ports[port] = rhs_compiler(value) + if len(value) > 0: + sub_ports[port] = rhs_compiler(value) module.cell(sub_type, name=sub_name, ports=sub_ports, params=sub_params, attrs=subfragment.attrs) -- 2.30.2