giuseros commented on a change in pull request #6783:
URL: https://github.com/apache/incubator-tvm/pull/6783#discussion_r513384321



##########
File path: python/tvm/relay/frontend/tensorflow.py
##########
@@ -788,6 +788,14 @@ def _impl(inputs, attr, params, mod):
     return _impl
 
 
+def _expm1():

Review comment:
       Could you add the docstring  describing what this operation is doing? 

##########
File path: python/tvm/relay/frontend/tensorflow.py
##########
@@ -788,6 +788,14 @@ def _impl(inputs, attr, params, mod):
     return _impl
 
 
+def _expm1():
+    def _impl(inputs, attr, params, mod):
+        lh = get_relay_op("exp")(inputs[0])
+        return get_relay_op("subtract")(lh, tvm.relay.const(1, attr["T"].name))

Review comment:
       Not entirely sure, but can't you write `return lh -1`? Isn't there an 
overload for the `-` operator?




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