[PATCH] D38790: [ELF] Do not keep symbols if they referenced only from discarded sections.

Mon Nov 20 07:59:54 PST 2017

ikudrin updated this revision to Diff 123596.
ikudrin edited the summary of this revision.
ikudrin added a comment.

- Extract corrections in the existing tests into https://reviews.llvm.org/D40253.
- Use handling of DT_NEEDED from https://reviews.llvm.org/D40240.
- Don't try to maintain actual `Live` flag for all symbols. Just mark symbols used in relocations in live sections and make the final decision later in `includeInSymtab`.

https://reviews.llvm.org/D38790

Files:
  ELF/MarkLive.cpp
  ELF/Symbols.h
  ELF/Writer.cpp
  test/ELF/gc-collect-undefined.s
  test/ELF/gc-sections-shared.s

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