Scheduler backprop

include/aidge/backend/cpu/operator/TanhImpl.hpp

@@ -33,7 +33,7 @@ class TanhImplBackward_cpu
 
 class TanhImpl_cpu : public OperatorImpl {
 public:
-    TanhImpl_cpu(const Tanh_Op& op) : OperatorImpl(op) {}
+    TanhImpl_cpu(const Tanh_Op& op) : OperatorImpl(op, "cpu") {}
 
     static std::unique_ptr<TanhImpl_cpu> create(const Tanh_Op& op) {
         return std::make_unique<TanhImpl_cpu>(op);