kevinthesun commented on a change in pull request #4312:
URL: https://github.com/apache/incubator-tvm/pull/4312#discussion_r432044019
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File path: python/tvm/relay/op/_transform.py
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@@ -99,8 +99,80 @@ def _arange_shape_func(start, stop, step):
@_reg.register_shape_func("arange", True)
def arange_shape_func(attrs, inputs, _):
+ """
+ Shape func for arange
+ """
return [_arange_shape_func(*inputs)]
+@script
+def _strided_slice_shape_func_input_data(data, begin, end, strides,
+ slice_mode):
+ ndim = len(data.shape)
+ out = output_tensor((ndim,), "int64")
+ for i in const_range(ndim):
+ cbegin = 0
+ cend = data.shape[i]
+ cstride = 1
+ if strides.shape[0] > i:
+ cstride = strides[i]
+ if begin.shape[0] > i:
+ cbegin = begin[i]
+ if end.shape[0] <= i:
+ cend = data.shape[i]
+ elif slice_mode != 0:
+ if end[i] < 0:
+ cend = data.shape[i]
+ elif cstride < 0:
Review comment:
Should we always set cstride=1 for slice mode?
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