Add reminder TODO

aesara/tensor/basic_opt.py

@@ -2257,6 +2257,7 @@ def local_upcast_elemwise_constant_inputs(fgraph, node):
 @local_optimizer([SpecifyShape])
 def local_useless_specify_shape(fgraph, node):
     """Remove `SpecifyShape` if it does not actually change the shape pattern."""
+    # TODO: Check, this may be a repeated rewrite
     if isinstance(node.op, SpecifyShape):
         x = node.inputs[0]
         if np.all(x.type.shape == node.outputs[0].type.shape):
@@ -2278,6 +2279,7 @@ def local_specify_shape_lift(fgraph, node):
     SpecifyShape(SpecifyShape(x)) => SpecifyShape(x)
 
     """
+    # TODO: Check, this may be a repeated rewrite
     op = node.op
     if not isinstance(op, SpecifyShape):
         return False
@@ -2341,7 +2343,7 @@ def apply_specify_shape_opt(rval):
     A Variable (the same if no optimization can be applied)
 
     """
-
+    # TODO: Assess if this still makes sense...
     fg = FunctionGraph([], [])
     changed = True
     while changed and rval.owner: