[nnc] Support 0-dimensional tensors in x86-c++ backend (#6121)

Fixes compilation error of TFLIte StyleTransfer nework.

Signed-off-by: Sergei Barannikov <s.barannikov@samsung.com>

2 files changed, 2 insertions, 6 deletions

diff --git a/compiler/nnc/passes/soft_backend/code_snippets/cpp_header_types.def b/compiler/nnc/passes/soft_backend/code_snippets/cpp_header_types.def
index 77efd9ad8..771329cdd 100644
--- a/compiler/nnc/passes/soft_backend/code_snippets/cpp_header_types.def
+++ b/compiler/nnc/passes/soft_backend/code_snippets/cpp_header_types.def
@@ -92,10 +92,6 @@ public:
   /** Returns number of elements in table*/
   index_t getNumElems() const
   {
-    if (_dims == 0)
-    {
-      return 0;
-    }
     index_t volume = 1;
     for (index_t i = 0; i < _dims; ++i)
     {
@@ -120,7 +116,7 @@ using Index = Shape;
 class Tensor
 {
 public:
-  Tensor(): _shape(), _data(nullptr), _managed(true){}
+  Tensor(): Tensor(Shape{}){}
 
   Tensor(Tensor &&orig): _shape(orig._shape), _data(orig._data), _managed(orig._managed)
   {
diff --git a/compiler/nnc/unittests/soft_backend/CPPHeaderTypes.cpp b/compiler/nnc/unittests/soft_backend/CPPHeaderTypes.cpp
index f474664d8..bd81d565d 100644
--- a/compiler/nnc/unittests/soft_backend/CPPHeaderTypes.cpp
+++ b/compiler/nnc/unittests/soft_backend/CPPHeaderTypes.cpp
@@ -64,7 +64,7 @@ TEST(SOFT_BACKEND, shape_and_index) {
 TEST(SOFT_BACKEND, tensor) {
   // test reshape
   Tensor t1;
-  ASSERT_EQ(t1.getShape().getNumElems(), 0);
+  ASSERT_EQ(t1.getShape().getNumElems(), 1);
   const index_t tensor1_height = 2;
   const index_t tensor1_width = 4;
   t1.reshape(Shape{tensor1_height, tensor1_width});