[PATCH] D45374: [LoopUnroll] Limit peeling to conds in BBs executed on every iteration.

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.
Herald added a subscriber: zzheng.

You get some of the benefit of peeling whether or not the condition dominates the latch: both the peeled iterations and the remaining loop become simpler because the check disappears, and presumably that codepath is executed at least some of the time.  But maybe that doesn't help enough to be worth doing?  I'd like to understand the motivation a bit more.


https://reviews.llvm.org/D45374