From 8a6f9977f659d350cca936b45cb8b441d5a67eeb Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Wed, 5 Jun 2019 09:14:12 +0200
Subject: [PATCH] Suppress driver-driver conflict warning for unknown cell
types, fixes #1065
Signed-off-by: Clifford Wolf <clifford@clifford.at>
---
passes/opt/opt_clean.cc | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/passes/opt/opt_clean.cc b/passes/opt/opt_clean.cc
index 7011d4602..cfb0f788a 100644
--- a/passes/opt/opt_clean.cc
+++ b/passes/opt/opt_clean.cc
@@ -106,7 +106,7 @@ void rmunused_module_cells(Module *module, bool verbose)
if (raw_bit.wire == nullptr)
continue;
auto bit = sigmap(raw_bit);
- if (bit.wire == nullptr)
+ if (bit.wire == nullptr && ct_all.cell_known(cell->type))
driver_driver_logs[raw_sigmap(raw_bit)].push_back(stringf("Driver-driver conflict "
"for %s between cell %s.%s and constant %s in %s: Resolved using constant.",
log_signal(raw_bit), log_id(cell), log_id(it2.first), log_signal(bit), log_id(module)));