tree d3caa24bcbeb5e09db8121effaabff519831c684
parent 072acdaafefdd66320927eee3d7be4198e3eb85e
author Saurabh Saxena <srbs@google.com> 1603335923 -0700
committer TensorFlower Gardener <gardener@tensorflow.org> 1603337306 -0700

Add read variable op to function control outputs

After inlining, we convert control dependencies to the function call to depend
on all control outputs. Although read variable ops doesn't have side effect
itself, it must be executed before variable updates after the function call.

Note that it's not enough to convert control dependencies to the function call
to depend on both control outputs and data outputs of the function call. The
read variable ops can be inputs to ops that have side effects, e.g. assert and
print, which are not the function data outputs.

PiperOrigin-RevId: 338391537
Change-Id: Ibc843c1a584088e54010685ebce678b047f7d94d