[PATCH] D41592: [ELF] - Add missing dynamic tags when producing output with IRelative relocations only.

[George Rimar via Phabricator via llvm-commits]

grimar created this revision.
grimar added reviewers: ruiu, rafael.
Herald added a subscriber: fedor.sergeev.

This is "Bug 35751 - .dynamic relocation entries omitted if output
contains only IFUNC relocations"

We have `InX::RelaPlt` and `InX::RelaIPlt` synthetic sections for PLT relocations.
They are usually live in `rela.plt` section. Problem appears when `InX::RelaPlt`
section is empty. In that case we did not produce normal set of dynamic tags
required, because logic was written in the way assuming we always have
non-IRelative relocations in `rela.plt`.

Patch fixes the issue.


https://reviews.llvm.org/D41592

Files:
  ELF/SyntheticSections.cpp
  test/ELF/gnu-ifunc-dyntags.s

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