[PATCH] [RFC, PGO+LTO] Missed function specialization + partial devirtualization

Segher Boessenkool segher@kernel.crashing.org
Tue Jun 18 10:07:00 GMT 2019

On Tue, Jun 18, 2019 at 11:34:03AM +0200, Martin Liška wrote:
> I've got it. So it's situation where you have distribution equal to 50% and 50%. Note that it's
> the only valid situation where both edges with be >= 50%. That's the threshold for which
> we speculatively devirtualize edges.

But that 50% is a magic number, isn't it?  Maybe 20% works better, and
then you need a top5 (in the worst case).


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