update comment

apache · Dec 28, 2018 · 9c7cd9a · 9c7cd9a
1 parent dd59edd
commit 9c7cd9a
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/include/tvm/relay/pass.h b/include/tvm/relay/pass.h
@@ -216,7 +216,14 @@ struct StructuralHash {
  * It will turn an expression that is in a graph form (with sharing implicit),
  * to an expression with explicit sharing (A Normal Form).
  *
+ * All subexpression will be lifted to the least common ancestor of all scope it is referenced in.
+ *
+ * If an expression is not referenced anywhere (it is the root expression) it will be lifted to the outmost scope.
+ *
+ * If there are multiple subexpression in the same scope, they are lifted by the postDFS order.
+ *
  * \param e the expression to observably share
+ *
  * \param mod The module used for referencing global functions, can be
  * None.
  *