[PATCH] D125862: [clang][driver] Add gcc-toolset/devtoolset 12 to prefixes

[Fangrui Song via Phabricator via cfe-commits]

MaskRay added a comment.

In addition, if every new GCC release requires addition to /opt/rh/gcc-toolset-$major (if I understand correctly), we probably want to switch to `llvm::vfs::directory_iterator` iteration and using the largest version.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D125862/new/

https://reviews.llvm.org/D125862