[PATCH] D37848: [ELF] - Deduplivate FDEs correctly when two sections are ICFed

[George Rimar via Phabricator via llvm-commits]

grimar created this revision.
Herald added a subscriber: emaste.

This is PR34518,

Previously when LLD ICFed 2 sections it leaved 2 duplicate entries in .eh_frame
pointing to the same address. After that in deduplicated them in .eh_frame_header,
adjusting the amount of valid FDEs in header.
As a result excessive entries in .eh_frame and excessive dummy data in .eh_frame_header
was emited to output. Patch fixes that.


https://reviews.llvm.org/D37848

Files:
  ELF/SyntheticSections.cpp
  ELF/SyntheticSections.h
  test/ELF/eh-frame-hdr-icf-fde.s
  test/ELF/eh-frame-hdr-icf.s

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