[PATCH] D40026: [ELF] - Allow applying SHF_MERGE optimization for relocatable output.

[George Rimar via Phabricator via llvm-commits]

grimar created this revision.
Herald added subscribers: arichardson, emaste.

This is alternative (to https://reviews.llvm.org/D39959) version of fix for PR35223.

Here I enabled SHF_MERGE section content merging for -r like
we do for regular linking.
Besides expected changes that also required fixing of incorrect addends
produced for relocations and producing STT_SECTION symbol for
synthetic SHF_MERGE sections (we did not need that earlier because did
not use synthetic input section for -r before this patch).


https://reviews.llvm.org/D40026

Files:
  ELF/InputFiles.cpp
  ELF/InputSection.cpp
  ELF/LinkerScript.cpp
  ELF/SyntheticSections.cpp
  ELF/Writer.cpp
  test/ELF/emit-relocs.s
  test/ELF/merge-reloc.s
  test/ELF/relocatable-mergeable-relocs.s
  test/ELF/relocatable-mergeable.s

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