[luci] Infer dynamic shape for concat

This infers dynamic shape for concat Op.

ONE-DCO-1.0-Signed-off-by: Hyukjin Jeong <[email protected]>

compiler/luci/service/src/CircleShapeInferenceRule.cpp

@@ -579,6 +579,23 @@ loco::NodeShape infer_concatenation(const luci::CircleConcatenation *node)
     }
   }
 
+  std::vector<bool> dynamic_dims(first_shape.rank(), false);
+  for (uint32_t i = 0; i < node->numValues(); ++i)
+  {
+    auto input_shape = luci::shape_get(node->values(i)).as<loco::TensorShape>();
+    for (uint32_t j = 0; j < input_shape.rank(); ++j)
+    {
+      if (not input_shape.dim(j).known())
+        dynamic_dims.at(j) = true;
+    }
+  }
+
+  for (uint32_t i = 0; i < output_shape.rank(); ++i)
+  {
+    if (dynamic_dims.at(i))
+      output_shape.dim(i).unset();
+  }
+
   return loco::NodeShape{output_shape};
 }