[PATCH] D62989: [Unroll] Do NOT unroll a loop with small runtime upperbound
Michael Kruse via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Fri Jun 7 16:41:36 PDT 2019
Meinersbur added a comment.
In D62989#1534884 <https://reviews.llvm.org/D62989#1534884>, @zzheng wrote:
> Unwanted (or excessive) unrolling of loops with small runtime trip count upper bound.
Wouldn't I want to (fully) unroll loops especially those with low trip count to reduce overhead/enable further optimizations?
Do you have performance/code size numbers?
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