[PATCH] D71053: [LV] Take overhead of run-time checks into account during vectorization.

[Renato Golin via Phabricator via llvm-commits]

rengolin added a comment.

Is this change inspired by a real world case? If so, how relevant / pervasive is this case?

Also, how different are the run time checks from each other?

If we assume most of them end up being an additional comparison, sometimes with pointer dereference, and assuming the values will be already in registers (as they're about to be looped over), I think their costs end up being roughly the same, no?

Or am I missing something obvious?

Thanks!
--renato


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https://reviews.llvm.org/D71053