[PATCH] D154205: [MachineLICM] Handle subloops

[Thorsten via Phabricator via llvm-commits]

tschuett added a comment.

"When loops are nested, we generally optimize the inner loops before the outer loops. For one, inner loops are likely to be executed more often. For another, it could move computation to an outer loop from which it is hoisted further when the outer loop is optimized and so on."

https://www.cs.cmu.edu/~fp/courses/15411-f13/lectures/17-loopopt.pdf


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https://reviews.llvm.org/D154205