feat(prim::NumToTensor): Implement evaluator for NumToTensor

Signed-off-by: Naren Dasan <naren@narendasan.com>
Signed-off-by: Naren Dasan <narens@nvidia.com>

Author: narendasan

core/conversion/evaluators/prim.cpp

@@ -5,6 +5,7 @@
 #include "ATen/core/List.h"
 #include "ATen/core/stack.h"
 #include "c10/util/intrusive_ptr.h"
+#include "torch/torch.h"
 
 #include "core/conversion/evaluators/evaluators.h"
 
@@ -23,6 +24,11 @@ auto prim_registrations = RegisterNodeEvaluators()
             }
             return torch::jit::toIValue(n->output());
         }
+    }).evaluator({
+        torch::jit::prim::NumToTensor,
+        [](const torch::jit::Node* n, kwargs& args) -> c10::optional<torch::jit::IValue> {
+            return at::scalar_to_tensor(args.at(&(n->output()[0])).IValue()->toScalar());
+        }
     }).evaluator({
         torch::jit::prim::ListConstruct,
         [](const torch::jit::Node* n, kwargs& args) -> c10::optional<torch::jit::IValue> {