def find_array_def(arr):
        """Find numpy array definition such as
            arr = numba.unsafe.ndarray.empty_inferred(...).
        If it is arr = b[...], find array definition of b recursively.
        """
        arr_def = get_definition(func_ir, arr)
        _make_debug_print("find_array_def")(arr, arr_def)
        if isinstance(arr_def, ir.Expr):
            if guard(_find_unsafe_empty_inferred, func_ir, arr_def):
                return arr_def
            elif arr_def.op == 'getitem':
                return find_array_def(arr_def.value)
        raise GuardException
Find numpy array definition such as
            arr = numba.unsafe.ndarray.empty_inferred(...).
        If it is arr = b[...], find array definition of b recursively.
        
numba/core/inline_closurecall.py