[PATCH] D46169: Split merge sections early

[Rafael Avila de Espindola via Phabricator via llvm-commits]

espindola created this revision.
espindola added reviewers: ruiu, grimar.
Herald added subscribers: JDevlieghere, arichardson, aprantl, emaste.

Now that getSectionPiece is fast (uses a hash) it is probably OK to split merge sections early.

The reason I want to do this is to split eh_frame sections in the same place.

This does mean that we have to decompress early. Given that the only compressed sections are debug info, I don't think we are missing much.

I am currently benchmarking this patch.


https://reviews.llvm.org/D46169

Files:
  ELF/Driver.cpp
  ELF/InputSection.cpp
  ELF/InputSection.h
  ELF/SyntheticSections.cpp
  ELF/SyntheticSections.h

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