tree b789e05ac1080a92bde29e300864dff32e6dfae0
parent e08405560f2b931a1e32c3352ab73fc64226eaab
author River Riddle <riverriddle@google.com> 1571071854 -0700
committer A. Unique TensorFlower <gardener@tensorflow.org> 1571072519 -0700

Allowing replacing non-root operations in DialectConversion.

When dealing with regions, or other patterns that need to generate temporary operations, it is useful to be able to replace other operations than the root op being matched. Before this PR, these operations would still be considered for legalization meaning that the conversion would either fail, erroneously need to mark these ops as legal, or add unnecessary patterns.

PiperOrigin-RevId: 274598513