[ORC] cloneToNewContext() can work with a const-ref to ThreadSafeModule

llvm/include/llvm/ExecutionEngine/Orc/ThreadSafeModule.h

@@ -162,7 +162,7 @@ using GVModifier = std::function<void(GlobalValue &)>;
 
 /// Clones the given module on to a new context.
 ThreadSafeModule
-cloneToNewContext(ThreadSafeModule &TSMW,
+cloneToNewContext(const ThreadSafeModule &TSMW,
                   GVPredicate ShouldCloneDef = GVPredicate(),
                   GVModifier UpdateClonedDefSource = GVModifier());
 

llvm/lib/ExecutionEngine/Orc/ThreadSafeModule.cpp

@@ -15,7 +15,7 @@
 namespace llvm {
 namespace orc {
 
-ThreadSafeModule cloneToNewContext(ThreadSafeModule &TSM,
+ThreadSafeModule cloneToNewContext(const ThreadSafeModule &TSM,
                                    GVPredicate ShouldCloneDef,
                                    GVModifier UpdateClonedDefSource) {
   assert(TSM && "Can not clone null module");