From 705c366a91aab577858d9f45f1ebad28b8db1523 Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Thu, 5 Apr 2018 11:01:32 +0200
Subject: Added missing dont_use handling for SR FFs to dfflibmap
Signed-off-by: Clifford Wolf <clifford@clifford.at>
---
passes/techmap/dfflibmap.cc | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/passes/techmap/dfflibmap.cc b/passes/techmap/dfflibmap.cc
index 4cb1489a8..5ccb770c4 100644
--- a/passes/techmap/dfflibmap.cc
+++ b/passes/techmap/dfflibmap.cc
@@ -240,6 +240,10 @@ static void find_cell_sr(LibertyAst *ast, std::string cell_type, bool clkpol, bo
if (cell->id != "cell" || cell->args.size() != 1)
continue;
+ LibertyAst *dn = cell->find("dont_use");
+ if (dn != NULL && dn->value == "true")
+ continue;
+
LibertyAst *ff = cell->find("ff");
if (ff == NULL)
continue;
--
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