[PATCH] D90125: [CSSPGO] Infrastructure for context-sensitive Sample PGO and Inlining

[Wenlei He via Phabricator via llvm-commits]

wenlei added a comment.

> If CSSPGO has the priority based inliner, does it mean it will do most inliner work and CGSCC inliner will mostly be used as an iterative clean up pass?

Yeah, we want early inliner to take over more inlining, for the full benefit of top-down specialization as well as accurate post-inline profile. CSSPGO+priority-based TD inline now lead to more inlining shifted from CGSCC inline to early inline, but currently most of the inlining is still done by CGSCC inline (by number of inline sites). This is subject to tuning and something we're looking into. We want to make sure at least all hot inlining are covered early TD inliner.


Repository:
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  https://reviews.llvm.org/D90125/new/

https://reviews.llvm.org/D90125