Arm Backend: Generate input if not supplied in the non semihosting (#5308)

Summary:
This will generate fake input filled with 1 instead of no input if no input is supplied.

Pull Request resolved: #5308

Reviewed By: swolchok

Differential Revision: D62645530

Pulled By: digantdesai

fbshipit-source-id: fdb313dfee3413f87884ab6416af18e1ecf77a39

Author: zingo

examples/arm/executor_runner/arm_executor_runner.cpp

@@ -93,10 +93,12 @@ Result<util::BufferCleanup> prepare_input_tensors(
   size_t num_inputs = method_meta.num_inputs();
   size_t num_allocated = 0;
 
+#ifdef SEMIHOSTING
   ET_CHECK_OR_RETURN_ERROR(
       input_buffers.size() > 0 && num_inputs == input_buffers.size(),
       InvalidArgument,
       "Wrong number of inputs allocated compared to method");
+#endif
 
   void** inputs =
       static_cast<void**>(allocator.allocate(num_inputs * sizeof(void*)));