1 files changed, 16 insertions, 2 deletions
diff --git a/src/ir/module-utils.h b/src/ir/module-utils.h
index f2fda908c..e212ae8dc 100644
--- a/src/ir/module-utils.h
+++ b/src/ir/module-utils.h
@@ -105,8 +105,8 @@ inline Event* copyEvent(Event* event, Module& out) {
   return ret;
 }
 
-inline void copyModule(Module& in, Module& out) {
-  // we use names throughout, not raw points, so simple copying is fine
+inline void copyModule(const Module& in, Module& out) {
+  // we use names throughout, not raw pointers, so simple copying is fine
   // for everything *but* expressions
   for (auto& curr : in.functionTypes) {
     out.addFunctionType(make_unique<FunctionType>(*curr));
@@ -136,6 +136,20 @@ inline void copyModule(Module& in, Module& out) {
   out.debugInfoFileNames = in.debugInfoFileNames;
 }
 
+inline void clearModule(Module& wasm) {
+  wasm.functionTypes.clear();
+  wasm.exports.clear();
+  wasm.functions.clear();
+  wasm.globals.clear();
+  wasm.events.clear();
+  wasm.table.segments.clear();
+  wasm.memory.segments.clear();
+  wasm.start = Name();
+  wasm.userSections.clear();
+  wasm.debugInfoFileNames.clear();
+  wasm.updateMaps();
+}
+
 // Renaming
 
 // Rename functions along with all their uses.