Merge branch 'master' into mmicko/anlogic

2 files changed, 9 insertions, 0 deletions

diff --git a/kernel/rtlil.cc b/kernel/rtlil.cc
index ded1cd60e..bd2fd91a3 100644
--- a/kernel/rtlil.cc
+++ b/kernel/rtlil.cc
@@ -3554,6 +3554,12 @@ bool RTLIL::SigSpec::operator ==(const RTLIL::SigSpec &other) const
 	if (width_ != other.width_)
 		return false;
 
+	// Without this, SigSpec() == SigSpec(State::S0, 0) will fail
+	//   since the RHS will contain one SigChunk of width 0 causing
+	//   the size check below to fail
+	if (width_ == 0)
+		return true;
+
 	pack();
 	other.pack();
 
diff --git a/kernel/rtlil.h b/kernel/rtlil.h
index c08653b65..e5b24cc02 100644
--- a/kernel/rtlil.h
+++ b/kernel/rtlil.h
@@ -609,8 +609,11 @@ struct RTLIL::Const
 	std::string decode_string() const;
 
 	inline int size() const { return bits.size(); }
+	inline bool empty() const { return bits.empty(); }
 	inline RTLIL::State &operator[](int index) { return bits.at(index); }
 	inline const RTLIL::State &operator[](int index) const { return bits.at(index); }
+	inline decltype(bits)::iterator begin() { return bits.begin(); }
+	inline decltype(bits)::iterator end() { return bits.end(); }
 
 	bool is_fully_zero() const;
 	bool is_fully_ones() const;