[all-commits] [llvm/llvm-project] 5c3bde: [CodeGen] Fix an issue when the 'extern C' replace...

[Erich Keane via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5c3bde96250c5260773009e691f92cb4823372df
      https://github.com/llvm/llvm-project/commit/5c3bde96250c5260773009e691f92cb4823372df
  Author: Erich Keane <erich.keane at intel.com>
  Date:   2022-06-07 (Tue, 07 Jun 2022)

  Changed paths:
    M clang/lib/CodeGen/CodeGenModule.cpp
    A clang/test/CodeGenCXX/externc-used-not-replaced.cpp

  Log Message:
  -----------
  [CodeGen] Fix an issue when the 'extern C' replacement names broke

Originally broken by me in D122608, this is a regression where we
attempt to replace an extern-C thing with 'itself'.  The problem is that
we end up deleting it, causing the value to fail when it gets put into
llvm.used.