[PATCH] D104060: Machine IR Profile

[Wenlei He via Phabricator via llvm-commits]

wenlei added a comment.

I think it makes total sense to leverage existing PGO and achieve what's needed through extension rather setting up a new, disconnected framework. I've been working with @ellis and @kyulee offline to see how we can satisfies the key requirements within IRPGO framework.

It really comes down to two things: 1) extractable metadata; 2) coarse-grained instrumentation, and these don't warrant reinvent the wheel for every piece in the PGO pipeline. We've come up with a design that we think can achieve both within today's PGO framework, and we will send up a high level RFC soon. Thanks for the feedbacks and discussions.


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  https://reviews.llvm.org/D104060/new/

https://reviews.llvm.org/D104060