onnx-graphsurgeon: fix constant folding bug when input is empty

Signed-off-by: inisis <[email protected]>

Author: inisis

tools/onnx-graphsurgeon/onnx_graphsurgeon/ir/graph.py

@@ -668,7 +668,7 @@ def is_foldable(node):
                     return False
 
                 def all_tensors_const(tensors):
-                    return all([t.name in graph_constants for t in tensors])
+                    return all([t.name in graph_constants for t in tensors if not t.is_empty()])
 
                 if not all_tensors_const(node.inputs):
                     return False