[PATCH] D31963: ThinLTOBitcodeWriter: keep comdats together, rename if leader is renamed

[Bob Haarman via Phabricator via llvm-commits]

inglorion created this revision.

COFF requires that every comdat contain a symbol with the same name as
the comdat. ThinLTOBitcodeWriter renames symbols, which may cause this
requirement to be violated. This change avoids such violations by
renaming comdats if their leaders are renamed. It also keeps comdats
together when splitting modules.


https://reviews.llvm.org/D31963

Files:
  lib/Transforms/IPO/ThinLTOBitcodeWriter.cpp
  test/Transforms/ThinLTOBitcodeWriter/comdat.ll

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