From 3e4b0cac8dc1f443bbd43030f1ce151b41555d97 Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Fri, 3 Oct 2014 12:58:40 +0200
Subject: added resource sharing of $macc cells

---
 kernel/macc.h | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'kernel/macc.h')

diff --git a/kernel/macc.h b/kernel/macc.h
index 271141112..7d70a2686 100644
--- a/kernel/macc.h
+++ b/kernel/macc.h
@@ -45,6 +45,9 @@ struct Macc
 			if (SIZE(port.in_a) == 0 && SIZE(port.in_b) == 0)
 				continue;
 
+			if (SIZE(port.in_a) < SIZE(port.in_b))
+				std::swap(port.in_a, port.in_b);
+
 			if (SIZE(port.in_a) == 1 && SIZE(port.in_b) == 0 && !port.is_signed && !port.do_subtract) {
 				bit_ports.append(port.in_a);
 				continue;
@@ -224,6 +227,12 @@ struct Macc
 
 		return true;
 	}
+
+	Macc(RTLIL::Cell *cell = nullptr)
+	{
+		if (cell != nullptr)
+			from_cell(cell);
+	}
 };
 
 YOSYS_NAMESPACE_END
-- 
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