[all-commits] [llvm/llvm-project] 83ea7c: [BOLT][NFC] Track fragment relationships using Equ...

[Amir Ayupov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 83ea7ce3a132001dfd7665c7eb50ef44cfd79802
      https://github.com/llvm/llvm-project/commit/83ea7ce3a132001dfd7665c7eb50ef44cfd79802
  Author: Amir Ayupov <aaupov at fb.com>
  Date:   2024-07-24 (Wed, 24 Jul 2024)

  Changed paths:
    M bolt/include/bolt/Core/BinaryContext.h
    M bolt/include/bolt/Core/BinaryFunction.h
    M bolt/lib/Core/BinaryContext.cpp
    M bolt/lib/Core/Exceptions.cpp

  Log Message:
  -----------
  [BOLT][NFC] Track fragment relationships using EquivalenceClasses

Three-way splitting can create references between split fragments (warm
to cold or vice versa) that are not handled by
`isChildOf/isParentOf/isChildOrParentOf`. Generalize fragment
relationships to allow checking if two functions belong to one group,
potentially in presence of ICF which can join multiple groups.

Test Plan: NFC for existing tests

Reviewers: maksfb, ayermolo, rafaelauler, dcci

Reviewed By: rafaelauler

Pull Request: https://github.com/llvm/llvm-project/pull/99979



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