From: argama <argama@gmail.com>
Date: Sat, 13 Oct 2018 17:42:48 +0000 (+0800)
Subject: detect ff/latch before processing other nodes
X-Git-Tag: yosys-0.9~445^2
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=455638e00dff4951e666fb91fbd80de6b9e95f9f;p=yosys.git

detect ff/latch before processing other nodes
---

diff --git a/frontends/liberty/liberty.cc b/frontends/liberty/liberty.cc
index 0a5bd84de..0018d6dac 100644
--- a/frontends/liberty/liberty.cc
+++ b/frontends/liberty/liberty.cc
@@ -634,6 +634,8 @@ struct LibertyFrontend : public Frontend {
 				}
 			}
 
+			// some liberty files do not put ff/latch at the beginning of a cell
+			// try to find "ff" or "latch" and create FF/latch before processing all other nodes 
 			for (auto node : cell->children)
 			{
 				if (!flag_lib) {
@@ -645,6 +647,21 @@ struct LibertyFrontend : public Frontend {
 							goto skip_cell;
 						}
 				}
+			}
+
+			for (auto node : cell->children)
+			{
+				/*
+				if (!flag_lib) {
+					if (node->id == "ff" && node->args.size() == 2)
+						create_ff(module, node);
+					if (node->id == "latch" && node->args.size() == 2)
+						if (!create_latch(module, node, flag_ignore_miss_data_latch)) {
+							delete module;
+							goto skip_cell;
+						}
+				}
+				*/
 
 				if (node->id == "pin" && node->args.size() == 1)
 				{