[PATCH] D153547: [CostModel] Use min/max intrinsics for vecreduce.min/max costs

[Anna Thomas via Phabricator via llvm-commits]

anna added a comment.

Not to hijack this patch, but I was experimenting a similar patch for Loop vectorizer when trip count of the loop is low (when we vectorize it, we get regressions since we do not consider out-of-loop reduction cost in LoopVectorizer). The plan is to add a TTIHook, I'll put the change up for review.


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  https://reviews.llvm.org/D153547/new/

https://reviews.llvm.org/D153547