[PATCH] D73739: Exception support for basic block sections

[Wenlei He via Phabricator via llvm-commits]

wenlei added a comment.

> I expect static and dynamic counts in general will require rounds of tuning and will still hit pathological cases on certain scenarios.

Agreed. Specifically, even if MFS doesn't work well with sample PGO yet (could lead to perf regression due to profile quality issues?), we'd still like to have a way to enable just eh pad splitting for sample PGO. I can see that having everything driven by static or dynamic profile is cleaner, but practically the extra flexibility can be very useful.


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  https://reviews.llvm.org/D73739/new/

https://reviews.llvm.org/D73739