3 files changed, 48 insertions, 0 deletions
diff --git a/kernel/hashlib.h b/kernel/hashlib.h
index 52b38a064..8c977de2f 100644
--- a/kernel/hashlib.h
+++ b/kernel/hashlib.h
@@ -457,6 +457,13 @@ public:
 		return entries[i].udata.second;
 	}
 
+	template<typename Compare = std::less<K>>
+	void sort(Compare comp = Compare())
+	{
+		std::sort(entries.begin(), entries.end(), [comp](const entry_t &a, const entry_t &b){ return comp(b.udata.first, a.udata.first); });
+		do_rehash();
+	}
+
 	void swap(dict &other)
 	{
 		hashtable.swap(other.hashtable);
@@ -760,6 +767,13 @@ public:
 		return i >= 0;
 	}
 
+	template<typename Compare = std::less<K>>
+	void sort(Compare comp = Compare())
+	{
+		std::sort(entries.begin(), entries.end(), [comp](const entry_t &a, const entry_t &b){ return comp(b.udata, a.udata); });
+		do_rehash();
+	}
+
 	void swap(pool &other)
 	{
 		hashtable.swap(other.hashtable);
diff --git a/kernel/rtlil.cc b/kernel/rtlil.cc
index aea993478..3fb98d1e2 100644
--- a/kernel/rtlil.cc
+++ b/kernel/rtlil.cc
@@ -373,6 +373,14 @@ void RTLIL::Design::remove(RTLIL::Module *module)
 	delete module;
 }
 
+void RTLIL::Design::sort()
+{
+	scratchpad.sort();
+	modules_.sort(sort_by_id_str());
+	for (auto &it : modules_)
+		it.second->sort();
+}
+
 void RTLIL::Design::check()
 {
 #ifndef NDEBUG
@@ -976,6 +984,21 @@ namespace {
 }
 #endif
 
+void RTLIL::Module::sort()
+{
+	wires_.sort(sort_by_id_str());
+	cells_.sort(sort_by_id_str());
+	avail_parameters.sort(sort_by_id_str());
+	memories.sort(sort_by_id_str());
+	processes.sort(sort_by_id_str());
+	for (auto &it : cells_)
+		it.second->sort();
+	for (auto &it : wires_)
+		it.second->attributes.sort(sort_by_id_str());
+	for (auto &it : memories)
+		it.second->attributes.sort(sort_by_id_str());
+}
+
 void RTLIL::Module::check()
 {
 #ifndef NDEBUG
@@ -1908,6 +1931,13 @@ const RTLIL::Const &RTLIL::Cell::getParam(RTLIL::IdString paramname) const
 	return parameters.at(paramname);
 }
 
+void RTLIL::Cell::sort()
+{
+	connections_.sort(sort_by_id_str());
+	parameters.sort(sort_by_id_str());
+	attributes.sort(sort_by_id_str());
+}
+
 void RTLIL::Cell::check()
 {
 #ifndef NDEBUG
diff --git a/kernel/rtlil.h b/kernel/rtlil.h
index dae684d98..d8ebae71d 100644
--- a/kernel/rtlil.h
+++ b/kernel/rtlil.h
@@ -788,6 +788,7 @@ struct RTLIL::Design
 	bool scratchpad_get_bool(std::string varname, bool default_value = false) const;
 	std::string scratchpad_get_string(std::string varname, std::string default_value = std::string()) const;
 
+	void sort();
 	void check();
 	void optimize();
 
@@ -863,6 +864,8 @@ public:
 	virtual ~Module();
 	virtual RTLIL::IdString derive(RTLIL::Design *design, dict<RTLIL::IdString, RTLIL::Const> parameters);
 	virtual size_t count_id(RTLIL::IdString id);
+
+	virtual void sort();
 	virtual void check();
 	virtual void optimize();
 
@@ -1136,6 +1139,7 @@ public:
 	void setParam(RTLIL::IdString paramname, RTLIL::Const value);
 	const RTLIL::Const &getParam(RTLIL::IdString paramname) const;
 
+	void sort();
 	void check();
 	void fixup_parameters(bool set_a_signed = false, bool set_b_signed = false);