hgt312 commented on a change in pull request #8266:
URL: https://github.com/apache/tvm/pull/8266#discussion_r655194469
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File path: tests/python/unittest/test_arith_rewrite_simplify.py
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@@ -293,6 +294,9 @@ def test_sub_index_simplify():
# mul co-efficient foldng
ck.verify(x - x, 0)
+ ck.verify(a - a, 0)
+ ck.verify(a - b, a - b)
+ ck.verify(a - b, c - c)
Review comment:
Remove this line now. Semantically, `a - b` is not equal to `c - c`, but
`structural_equal((a - b), (c-c))` works because for AnyNode it use the
`SEqualReduce` function which only checks the node's dtype. In fact, a function
contains AnyNode(s) in its `ret_type` after InferType will have new AnyNode(s),
the two func then differs though they pass the tests.
I think a long term approach should be map `Any` like `Var` when checking
the structures. So just keep it for now?
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