[PATCH] D27716: [ELF] - Implemented --retain-symbols-file option

[George Rimar via Phabricator via llvm-commits]

grimar created this revision.
grimar added reviewers: ruiu, rafael.
grimar added subscribers: llvm-commits, grimar, evgeny777.

--retain-symbols-file=filename
Retain only the symbols listed in the file filename, discarding all others. filename is simply a flat file, with one symbol name per line. This option is especially useful in environments (such as VxWorks) where a large global symbol table is accumulated gradually, to conserve run-time memory.

Note: though documentation says "--retain-symbols-file does not discard undefined symbols, or symbols needed for relocations.", both bfd and gold do that, and this patch too, like testcase show.


https://reviews.llvm.org/D27716

Files:
  ELF/Config.h
  ELF/Driver.cpp
  ELF/Options.td
  ELF/Writer.cpp
  test/ELF/retain-symbols-file.s

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