[PATCH] D83743: [InlineAdvisor] New inliner advisor to replay inlining from optimization remarks

[Wenlei He via Phabricator via llvm-commits]

wenlei created this revision.
wenlei added reviewers: davidxl, mtrofin, wmi, hoy.
Herald added subscribers: llvm-commits, hiraditya, aprantl.
Herald added a project: LLVM.

This change added a new inline advisor that takes optimization remarks for previous inlining as input, and provide the decision as advice so current inlining can replay inline decision of a different compilation. Dwarf inline stack with line and discriminator is used as anchor for call sites. The change can be useful for Inliner tuning.
A switch -sample-profile-inline-replay=<inline_remarks_file> is added to hook up the new inliner advisor with SampleProfileLoader's inline decision for replay. The new inline advisor can also be used by regular CGSCC inliner later if needed.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D83743

Files:
  llvm/include/llvm/Analysis/InlineAdvisor.h
  llvm/lib/Analysis/InlineAdvisor.cpp
  llvm/lib/Transforms/IPO/SampleProfile.cpp
  llvm/test/Transforms/SampleProfile/Inputs/inline-replay.txt
  llvm/test/Transforms/SampleProfile/inline-replay.ll

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