2 files changed, 16 insertions, 0 deletions
diff --git a/frontends/ast/ast.cc b/frontends/ast/ast.cc
index 3e9ea50ac..e7aa472ef 100644
--- a/frontends/ast/ast.cc
+++ b/frontends/ast/ast.cc
@@ -896,6 +896,21 @@ void AstModule::update_auto_wires(std::map<RTLIL::IdString, int> auto_sizes)
 	delete newmod;
 }
 
+RTLIL::Module *AstModule::clone() const
+{
+	AstModule *new_mod = new AstModule;
+	cloneInto(new_mod);
+
+	new_mod->ast = ast->clone();
+	new_mod->nolatches = nolatches;
+	new_mod->nomem2reg = nomem2reg;
+	new_mod->mem2reg = mem2reg;
+	new_mod->lib = lib;
+	new_mod->noopt = noopt;
+
+	return new_mod;
+}
+
 // internal dummy line number callbacks
 namespace {
 	int internal_line_num;
diff --git a/frontends/ast/ast.h b/frontends/ast/ast.h
index 99760e09c..f6bb7a40f 100644
--- a/frontends/ast/ast.h
+++ b/frontends/ast/ast.h
@@ -205,6 +205,7 @@ namespace AST
 		virtual ~AstModule();
 		virtual RTLIL::IdString derive(RTLIL::Design *design, std::map<RTLIL::IdString, RTLIL::Const> parameters);
 		virtual void update_auto_wires(std::map<RTLIL::IdString, int> auto_sizes);
+		virtual RTLIL::Module *clone() const;
 	};
 
 	// this must be set by the language frontend before parsing the sources