From cfe0817697c9e7a656fd3a64e3a9014fa86e78d0 Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Mon, 29 Dec 2014 02:01:42 +0100
Subject: Converting "share" to dict<> and pool<> complete

---
 kernel/hashlib.h | 11 +++++++++++
 kernel/rtlil.h   | 11 +++++++++--
 2 files changed, 20 insertions(+), 2 deletions(-)

(limited to 'kernel')

diff --git a/kernel/hashlib.h b/kernel/hashlib.h
index 021cc66ee..4e8c00026 100644
--- a/kernel/hashlib.h
+++ b/kernel/hashlib.h
@@ -76,6 +76,17 @@ template<> struct hash_ops<std::string> {
 	}
 };
 
+template<typename P, typename Q> struct hash_ops<std::pair<P, Q>> {
+	bool cmp(std::pair<P, Q> a, std::pair<P, Q> b) const {
+		return a == b;
+	}
+	unsigned int hash(std::pair<P, Q> a) const {
+		hash_ops<P> p_ops;
+		hash_ops<Q> q_ops;
+		return mkhash(p_ops.hash(a.first), q_ops.hash(a.second));
+	}
+};
+
 struct hash_cstr_ops {
 	bool cmp(const char *a, const char *b) const {
 		for (int i = 0; a[i] || b[i]; i++)
diff --git a/kernel/rtlil.h b/kernel/rtlil.h
index 5bca060f4..25477d02e 100644
--- a/kernel/rtlil.h
+++ b/kernel/rtlil.h
@@ -219,8 +219,8 @@ namespace RTLIL
 			return index_;
 		}
 
-		// The following is a helper key_compare class. Instead of for example pool<Cell*>
-		// use pool<Cell*, IdString::compare_ptr_by_name<Cell>> if the order of cells in the
+		// The following is a helper key_compare class. Instead of for example std::set<Cell*>
+		// use std::set<Cell*, IdString::compare_ptr_by_name<Cell>> if the order of cells in the
 		// set has an influence on the algorithm.
 
 		template<typename T> struct compare_ptr_by_name {
@@ -450,6 +450,13 @@ struct RTLIL::Const
 	std::string decode_string() const;
 
 	inline int size() const { return bits.size(); }
+
+	inline unsigned int hash() const {
+		unsigned int h = 5381;
+		for (auto b : bits)
+			mkhash(h, b);
+		return h;
+	}
 };
 
 struct RTLIL::SigChunk
-- 
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