[PATCH] D62989: [Unroll] Do NOT unroll a loop with small runtime upperbound

[Michael Kruse via Phabricator via llvm-commits]

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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