From 32695e5032fcaa932a67f63946ae5e2a1edc8d65 Mon Sep 17 00:00:00 2001
From: Eddie Hung <eddie@fpgeh.com>
Date: Thu, 2 Jan 2020 16:06:39 -0800
Subject: [PATCH] scc command to ignore blackboxes

---
 passes/cmds/scc.cc | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/passes/cmds/scc.cc b/passes/cmds/scc.cc
index 99f4fbae8..dd26f8258 100644
--- a/passes/cmds/scc.cc
+++ b/passes/cmds/scc.cc
@@ -301,10 +301,10 @@ struct SccPass : public Pass {
 		RTLIL::Selection newSelection(false);
 		int scc_counter = 0;
 
-		for (auto &mod_it : design->modules_)
-			if (design->selected(mod_it.second))
+		for (auto mod : design->modules())
+			if (!mod->get_blackbox_attribute() && design->selected(mod))
 			{
-				SccWorker worker(design, mod_it.second, nofeedbackMode, allCellTypes, maxDepth);
+				SccWorker worker(design, mod, nofeedbackMode, allCellTypes, maxDepth);
 
 				if (!setAttr.empty())
 				{