[PATCH] D17242: [ELF] - Linkerscript KEEP command.

[George Rimar via llvm-commits]

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

When link-time garbage collection is in use (-gc-sections), it is often useful to mark sections that should not be eliminated. This is accomplished by surrounding an input section's wildcard entry with KEEP().
Patch implements that command.

http://reviews.llvm.org/D17242

Files:
  ELF/LinkerScript.cpp
  ELF/LinkerScript.h
  ELF/MarkLive.cpp
  test/ELF/linkerscript-sections-keep.s

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