[all-commits] [llvm/llvm-project] 44253a: [memprof] Add MemProf version (#86414)

[Kazu Hirata via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 44253a9ce6de749aee06057e578fb3ccbcda3ffd
      https://github.com/llvm/llvm-project/commit/44253a9ce6de749aee06057e578fb3ccbcda3ffd
  Author: Kazu Hirata <kazu at google.com>
  Date:   2024-03-28 (Thu, 28 Mar 2024)

  Changed paths:
    M llvm/include/llvm/ProfileData/InstrProfWriter.h
    M llvm/include/llvm/ProfileData/MemProf.h
    M llvm/lib/ProfileData/InstrProfReader.cpp
    M llvm/lib/ProfileData/InstrProfWriter.cpp
    M llvm/tools/llvm-profdata/llvm-profdata.cpp

  Log Message:
  -----------
  [memprof] Add MemProf version (#86414)

This patch adds a version field to the MemProf section of the indexed
profile format, calling the new version "version 1".  The existing
version is called "version 0".

The writer supports both versions via a command-line option:

  llvm-profdata merge --memprof-version=1 ...

The reader supports both versions by automatically detecting the
version from the header.



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