[GitHub] [incubator-tvm] zhiics commented on a change in pull request #4618: [Topi]Allow empty tensor for reshape, tile and strided_slice

[GitBox <gi...@apache.org>]

zhiics commented on a change in pull request #4618: [Topi]Allow empty tensor for reshape, tile and strided_slice
URL: https://github.com/apache/incubator-tvm/pull/4618#discussion_r363015325
 
 

 ##########
 File path: topi/python/topi/util.py
 ##########
 @@ -417,3 +417,25 @@ def make_idx(b, e, s, z, i):
                           (b - i) // tvm.abs(s),
                           (i - b) // s)
     return tvm.if_then_else(tvm.expr.Or(bc, ec), 88, ss)
+
+
+def is_empty_shape(shape):
+    """Check whether an input shape has dimesion with size 0.
+
+    Parameter
+    ---------
+    shape : list of Expr
+      Input shape
+
+    Returns
+    -------
+    is_empty: bool
+      Whether input shape is empty or has dimesion with size 0.
+    """
+    is_empty = False
 
 Review comment:
   equivalent to the following (same for C++ code) ? 
   ```python
       for dim in shape:
           if isinstance(dim, tvm.expr.IntImm):
               if dim.value == 0:
                   return True
       return False
   ```

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