Fixes issue where external control dependencies in while loops are dropped.
authorAlexandre Passos <apassos@google.com>
Mon, 5 Feb 2018 21:03:53 +0000 (13:03 -0800)
committerTensorFlower Gardener <gardener@tensorflow.org>
Mon, 5 Feb 2018 21:08:15 +0000 (13:08 -0800)
commitf8f921c828fb2c97da7c7b80c01390ccec90ae40
treef013f0fab629d01afbbf2eb42e7d9ac5715ead40
parentd0904cbe01c88332acb4faa8bede21adb5fa1de7
Fixes issue where external control dependencies in while loops are dropped.

Fixes #15891

PiperOrigin-RevId: 184573795
tensorflow/python/kernel_tests/control_flow_ops_py_test.py
tensorflow/python/ops/control_flow_ops.py