lixiaoquan commented on a change in pull request #5680:
URL: https://github.com/apache/incubator-tvm/pull/5680#discussion_r431558475



##########
File path: tests/python/relay/test_dataflow_pattern.py
##########
@@ -1033,6 +1033,18 @@ def conv_bias_relu(x, w, b):
     assert pattern2.match(relu)
     assert tvm.ir.structural_equal(func(x, w, b), pattern2.partition(relu))
 
+def test_match_match():
+    add_pattern = is_op('add')(wildcard(), wildcard())
+    class TestRewrite(DFPatternCallback):
+        def __init__(self):
+            self.pattern = add_pattern
+        def callback(self, pre, post, node_map):
+            return post.args[0] - post.args[1]
+    mod = tvm.IRModule({})
+    tvm.relay.prelude.Prelude(mod)
+    # Apply rewrite on IR including relay.Match
+    rewrite(TestRewrite(), mod['tensor_concatenate_int64'])

Review comment:
       I've fixed this




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