[all-commits] [llvm/llvm-project] 78b56d: [ProfileData] Support format version 104 for exten...

[Kazu Hirata via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 78b56d968c54ad6453a4324fe739cb5ec236e2d7
      https://github.com/llvm/llvm-project/commit/78b56d968c54ad6453a4324fe739cb5ec236e2d7
  Author: Kazu Hirata <kazu at google.com>
  Date:   2026-07-08 (Wed, 08 Jul 2026)

  Changed paths:
    M llvm/include/llvm/ProfileData/SampleProf.h
    M llvm/include/llvm/ProfileData/SampleProfReader.h
    M llvm/include/llvm/ProfileData/SampleProfWriter.h
    M llvm/lib/ProfileData/SampleProfReader.cpp
    M llvm/lib/ProfileData/SampleProfWriter.cpp
    M llvm/unittests/ProfileData/SampleProfTest.cpp

  Log Message:
  -----------
  [ProfileData] Support format version 104 for extensible binary sample profiles (#206297)

This patch adds initial support for format version 104 in extensible
binary sample profiles to support the upcoming on-disk hash table.
This patch sets up the versioning scheme in the reader and writer as a
preparation step without actually introducing the on-disk hash table.

The reader is updated to support format version 104.  The writer can
now write format version 104 profiles when requested via
-sample-profile-format-version, but continues to default to version
103 as version 104 is a work in progress.  We plan to promote the
default version to 104 once the on-disk hash table support is fully
integrated in a subsequent patch.

RFC:
https://discourse.llvm.org/t/rfc-faster-sample-profile-loading/90957/4

Assisted-by: Antigravity



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