[PATCH] D21720: Unroll for uncountable loops

[Evgeny Stupachenko via Phabricator via llvm-commits]

evstupac added a comment.

> Not really... I mean, we have PartialThreshold as a maximum size for the whole unrolled loop, but that isn't sensitive to the dynamic cost savings.  (Compare to getFullUnrollBoostingFactor for complete unrolling.)

Right. But full unroll is the only exception.
And yes this threshold is not that accurate, but it bounds loop unrolling. And it will bound uncountable loops unroll as well.


Repository:
  rL LLVM

https://reviews.llvm.org/D21720