From: Clifford Wolf <clifford@clifford.at>
Date: Mon, 26 Feb 2018 10:46:05 +0000 (+0100)
Subject: Fix opt_rmdff handling of $dlatchsr
X-Git-Tag: yosys-0.8~206
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=fba499b8666ef33bc5b11ce2df7b8b18a5aeaa75;p=yosys.git

Fix opt_rmdff handling of $dlatchsr

Signed-off-by: Clifford Wolf <clifford@clifford.at>
---

diff --git a/passes/opt/opt_rmdff.cc b/passes/opt/opt_rmdff.cc
index edec42c4d..b5edb357b 100644
--- a/passes/opt/opt_rmdff.cc
+++ b/passes/opt/opt_rmdff.cc
@@ -154,6 +154,9 @@ bool handle_dffsr(RTLIL::Module *mod, RTLIL::Cell *cell)
 	if (used_pol_set && used_pol_clr && pol_set != pol_clr)
 		return did_something;
 
+	if (cell->type == "$dlatchsr")
+		return did_something;
+
 	State unified_pol = used_pol_set ? pol_set : pol_clr;
 
 	if (cell->type == "$dffsr")