[PATCH] D116496: [unroll] Prune all but first copy of invariant exit

[Nikita Popov via Phabricator via llvm-commits]

nikic accepted this revision.
nikic added a comment.
This revision is now accepted and ready to land.

LG apart from the previous note on tests. I think unrolling is an area where it is worthwhile to do cleanup as part of the transform (as long as it remains simple), because we may be producing a large amount of code, and this reduces the amount of work follow-on transforms have to do. Additionally, it is worth noting that runtime unrolling is performed very late in the pipeline, and we generally cannot expect any non-trivial redundancies exposed by that to be optimized away.


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https://reviews.llvm.org/D116496