From: Eddie Hung <eddie@fpgeh.com>
Date: Tue, 18 Feb 2020 22:31:24 +0000 (-0800)
Subject: abc9_ops: suppress -prep_box warning for abc9_flop
X-Git-Tag: working-ls180~780^2~5
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=88d5997c80e5c2bebb479f76b123899c6de48c57;p=yosys.git

abc9_ops: suppress -prep_box warning for abc9_flop
---

diff --git a/passes/techmap/abc9_ops.cc b/passes/techmap/abc9_ops.cc
index e46ad0a02..cffcc189e 100644
--- a/passes/techmap/abc9_ops.cc
+++ b/passes/techmap/abc9_ops.cc
@@ -670,7 +670,7 @@ void prep_box(RTLIL::Design *design, bool dff_mode)
 		ss << std::endl;
 
 		auto &t = timing.setup_module(module).comb;
-		if (t.empty())
+		if (!abc9_flop && t.empty())
 			log_warning("(* abc9_box *) module '%s' has no timing (and thus no connectivity) information.\n", log_id(module));
 
 		for (const auto &o : outputs) {