[PATCH] D62884: [lld] Explicitly ignore comdat groups when parsing LTO object

[Christy Lee via Phabricator via llvm-commits]

christylee added a comment.

We are trying to migrate from gold to lld, and we found that when building with thinlto, lld does not de-duplicate `.debug_types`.  De-duplication is successful with monolithic lto.  Repro: clang `-flto=thin -fdebug-types-section -fuse-ld=lld -Wl,-plugin-opt=-generate-type-units`

If we set `ignoreComdats=false` for lto builds, then the de-duplication is successful again.  Is the assumption "any symbols defined in the LTO object are by definition the ones we want in the final output" only true for monolithic lto?


Repository:
  rL LLVM

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https://reviews.llvm.org/D62884