From f31fb95963507d6ddd00cd25a2eaa90d6a191ae7 Mon Sep 17 00:00:00 2001
From: Jannis Harder <me@jix.one>
Date: Thu, 11 Jan 2024 15:18:37 +0100
Subject: [PATCH] Ignore $scopeinfo in write_verilog

---
 backends/verilog/verilog_backend.cc | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/backends/verilog/verilog_backend.cc b/backends/verilog/verilog_backend.cc
index 988eef658..05b7c6c40 100644
--- a/backends/verilog/verilog_backend.cc
+++ b/backends/verilog/verilog_backend.cc
@@ -1871,6 +1871,13 @@ bool dump_cell_expr(std::ostream &f, std::string indent, RTLIL::Cell *cell)
 
 void dump_cell(std::ostream &f, std::string indent, RTLIL::Cell *cell)
 {
+	// To keep the output compatible with other tools we ignore $scopeinfo
+	// cells that exist only to hold metadata. If in the future that metadata
+	// should be exposed as part of the write_verilog output it should be
+	// opt-in and/or represented as something else than a $scopeinfo cell.
+	if (cell->type == ID($scopeinfo))
+		return;
+
 	// Handled by dump_memory
 	if (cell->is_mem_cell())
 		return;