[PATCH] D43996: [llvm-objcopy] Implement support for .group sections.

[Alexander Shaposhnikov via Phabricator via llvm-commits]

alexshap created this revision.
alexshap added reviewers: jakehehrlich, jhenderson.

This diff adds support for .group sections to llvm-objcopy.

P.S. This change was enough to make the linker and binutils objdump/objcopy work correctly on the examples I was looking at,
however i'm planning to add proper handing of sh_info in a follow-up patch.

Test plan: make check-all


Repository:
  rL LLVM

https://reviews.llvm.org/D43996

Files:
  test/tools/llvm-objcopy/Inputs/groups.o
  test/tools/llvm-objcopy/test-groups.test
  tools/llvm-objcopy/Object.cpp
  tools/llvm-objcopy/Object.h

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