[PATCH] D147456: [AutoFDO] Stale profile matching(part 1)

[Mingming Liu via Phabricator via llvm-commits]

mingmingl added a comment.

In D147456#4247075 <https://reviews.llvm.org/D147456#4247075>, @wlei wrote:

> Thank you for all the feedback, I will try to address it later. I saw you all are curious the algorithm part, here it is: https://reviews.llvm.org/D147545.
>
>> Just browsed the patch, I don't seem to find how FUncToMatchingsMap is populated which is the core of the stale profile matching algorithm.  Does algorithm use some anchor points to do the remapping?
>
> Yes, here is the algorithm part : https://reviews.llvm.org/D147545, it leverages the callee name/ calltarget name as anchor which doesn't need any other additional info.

Just curious, I wonder if there //happens// to be a measurement of the percentage of samples recovered (that would have been dropped) for csspgo. I guess I'm trying see how much headroom remains with D147545 <https://reviews.llvm.org/D147545> :)


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