[Legacy ThinLTO] NFC: Move helper class to an "Impl" namespace#112846

hubert-reinterpretcast merged 1 commit intomainllvm/llvm-project:mainfrom

users/hubert-reinterpretcast/LegacyThinLTO-MoveTargetMachineBuilderllvm/llvm-project:users/hubert-reinterpretcast/LegacyThinLTO-MoveTargetMachineBuilderCopy head branch name to clipboard