From: Eddie Hung <eddie@fpgeh.com>
Date: Fri, 24 Jan 2020 03:08:51 +0000 (-0800)
Subject: abc9: warning message if no modules selected
X-Git-Tag: working-ls180~849^2~4
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=245873d42d7975b6c303c2d04b75f3cafc6c5697;p=yosys.git

abc9: warning message if no modules selected
---

diff --git a/passes/techmap/abc9.cc b/passes/techmap/abc9.cc
index f4a89efff..2aeda16d6 100644
--- a/passes/techmap/abc9.cc
+++ b/passes/techmap/abc9.cc
@@ -234,6 +234,12 @@ struct Abc9Pass : public ScriptPass
 		}
 		extra_args(args, argidx, design);
 
+		log_assert(design);
+		if (design->selected_modules().empty()) {
+			log_warning("No modules selected for ABC9 techmapping.\n");
+			return;
+		}
+
 		log_header(design, "Executing ABC9 pass.\n");
 		log_push();