Commit 92ca3508 authored by Derek Murray's avatar Derek Murray Committed by TensorFlower Gardener
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[tf.data] Optimize the performance of `tf.data.Iterator` in eager mode. 

The change to introduce `Structure` into iterators regressed the per-element performance because it added redundant checks each time an element was produced. With this change, the performance is slightly better than it was before the move to `Structure`.

PiperOrigin-RevId: 219532162
parent f36951ea
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