[all-commits] [llvm/llvm-project] 022762: [BOLT][BAT] Support multi-way split functions

[Amir Ayupov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0227623915bf0b4794bdbc64974f6cbd6fcc1611
      https://github.com/llvm/llvm-project/commit/0227623915bf0b4794bdbc64974f6cbd6fcc1611
  Author: Amir Ayupov <aaupov at fb.com>
  Date:   2024-04-05 (Fri, 05 Apr 2024)

  Changed paths:
    M bolt/lib/Profile/BoltAddressTranslation.cpp
    M bolt/test/X86/yaml-secondary-entry-discriminator.s

  Log Message:
  -----------
  [BOLT][BAT] Support multi-way split functions

BAT writeMaps encoded the assumption that functions are only split into
two fragments (hot and cold). However, BOLT supports splitting into
arbitrary number of fragments. Relax that assumption and look up primary
(hot) fragment explicitly.

Depends on: https://github.com/llvm/llvm-project/pull/86219

Test Plan: Updated bolt/test/X86/yaml-secondary-entry-discriminator.s

Reviewers: ayermolo, rafaelauler, maksfb, dcci

Reviewed By: maksfb, dcci

Pull Request: https://github.com/llvm/llvm-project/pull/87123



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