[PATCH] D107299: [SampleFDO] split context string to deduplicate function name used in the context.

[Wei Mi via Phabricator via llvm-commits]

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Currently context strings contain a lot of duplicated function names and that signficantly increase the profile size. This change split the context into a series of {name, offset, discriminator} tuples so function names used in the context can be replaced by the index into the name table and that significantly reduce the size consumed by context.


Repository:
  rL LLVM

https://reviews.llvm.org/D107299

Files:
  llvm/include/llvm/ProfileData/SampleProf.h
  llvm/include/llvm/ProfileData/SampleProfReader.h
  llvm/include/llvm/ProfileData/SampleProfWriter.h
  llvm/lib/ProfileData/SampleProfReader.cpp
  llvm/lib/ProfileData/SampleProfWriter.cpp

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