[PATCH] D44535: Introduce metadata for avoiding loop predication

[Anna Thomas via Phabricator via llvm-commits]

anna abandoned this revision.
anna added a comment.

Artur had an idea offline that we could use BPI to identify if the latch exit is very rarely taken compared to other exits in the loop. We can teach loop predication to use that information and avoid predication, instead of depending on `llvm.cond.donot_predicate` metadata.

I'm going to abandon this revision for now and get back in case the above idea of using BPI doesn't pan out for some reason.


Repository:
  rL LLVM

https://reviews.llvm.org/D44535