[PATCH] D35754: [ForwardOpTree] Introduce the -polly-optree pass.

[Michael Kruse via Phabricator via llvm-commits]

Meinersbur added a comment.

In https://reviews.llvm.org/D35754#818836, @nandini12396 wrote:

> Thank you. This is really nice idea. Do you have some cost modeling for when to allow this forwarding?


There is no cost modeling (yet), it is assumed to be always beneficial. The GVN pass should later be able do remove instruction duplication and move them back to cheaper places again.


Repository:
  rL LLVM

https://reviews.llvm.org/D35754