From f28b6aff40a65aa30a04b77cd51e6c0a346e739e Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Wed, 27 Feb 2013 16:27:20 +0100
Subject: Implemented basic functionality of "extract" pass

---
 kernel/sigtools.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'kernel')

diff --git a/kernel/sigtools.h b/kernel/sigtools.h
index e76fd6023..e6c09331d 100644
--- a/kernel/sigtools.h
+++ b/kernel/sigtools.h
@@ -207,6 +207,20 @@ struct SigSet
 		find(sig, result);
 		return result;
 	}
+
+	bool has(RTLIL::SigSpec sig)
+	{
+		sig.expand();
+		for (auto &c : sig.chunks) {
+			if (c.wire == NULL)
+				continue;
+			assert(c.width == 1);
+			bitDef_t bit(c.wire, c.offset);
+			if (bits.count(bit))
+				return true;
+		}
+		return false;
+	}
 };
 
 struct SigMap
-- 
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