[PATCH] D139816: [LTO] Don't generate invalid modules if "LTOPostLink" MD already exists

[Pierre van Houtryve via Phabricator via llvm-commits]

Pierre-vh created this revision.
Pierre-vh added reviewers: pcc, arsenm, ostannard.
Herald added subscribers: ormris, steven_wu, hiraditya, inglorion.
Herald added a project: All.
Pierre-vh requested review of this revision.
Herald added subscribers: llvm-commits, wdng.
Herald added a project: LLVM.

Prevents the LTO library from generating an invalid module when the
LTOPostlink MD is already present (which was added in D63932 <https://reviews.llvm.org/D63932>).


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D139816

Files:
  llvm/include/llvm/IR/Module.h
  llvm/lib/IR/Module.cpp
  llvm/lib/LTO/LTO.cpp
  llvm/lib/LTO/LTOCodeGenerator.cpp
  llvm/test/LTO/ARM/lto-linking-metadata-already-present.ll
  llvm/test/LTO/ARM/lto-linking-metadata-overwrite.ll

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