[PATCH] D76255: [SampleFDO] Port MD5 name table support to extbinary format.

[Wei Mi via Phabricator via llvm-commits]

wmi created this revision.
wmi added reviewers: davidxl, wenlei.
Herald added a subscriber: hiraditya.

Compbinary format uses MD5 to represent strings in name table. That gives smaller profile. The patch adds the support in extbinary format. It is off by default but user can choose to enable it.

  
  Note the feature of using MD5 in name table can bring very small chance of name conflict leading to profile mismatch. Besides, profile using the feature won't have the profile remapping support.


Repository:
  rL LLVM

https://reviews.llvm.org/D76255

Files:
  llvm/include/llvm/ProfileData/SampleProf.h
  llvm/include/llvm/ProfileData/SampleProfReader.h
  llvm/include/llvm/ProfileData/SampleProfWriter.h
  llvm/lib/ProfileData/SampleProf.cpp
  llvm/lib/ProfileData/SampleProfReader.cpp
  llvm/lib/ProfileData/SampleProfWriter.cpp
  llvm/lib/Transforms/IPO/SampleProfile.cpp
  llvm/test/Transforms/SampleProfile/Inputs/inline.md5extbinary.afdo
  llvm/test/Transforms/SampleProfile/profile-format.ll
  llvm/test/tools/llvm-profdata/roundtrip.test
  llvm/tools/llvm-profdata/llvm-profdata.cpp
  llvm/unittests/ProfileData/SampleProfTest.cpp

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