tree 73d0906f57219b58ca64261e7d7623e058009d80
parent 5a63699c77068f663a68751b1db0a06c94f78b58
author Smit Hinsu <hinsu@google.com> 1608073132 -0800
committer TensorFlower Gardener <gardener@tensorflow.org> 1608073380 -0800

NFC: Minor modifications to the tpu-outside-compilation-cluster pass

Specifically,
- Filter out marked ops for outside compilation and run cluster assignment only on them.
- Use llvm::concat to combine data and control dependency
- Exit early if the op is not safe to add

This will help in the follow-up changes to the pass.

PiperOrigin-RevId: 347699261
Change-Id: I8c948ea8f7d19086b95564efabcb66fc06a0153a