[llvm-branch-commits] Frontend: Adopt llvm::vfs::OutputBackend in CompilerInstance (PR #113364)

[Alexandre Ganea via llvm-branch-commits]

aganea wrote:

This seems good, perhaps after https://github.com/llvm/llvm-project/pull/113363 lands, it'd be interesting to rebase and run some build-time tests, just to ensure it doesn't introduce regressions.

https://github.com/llvm/llvm-project/pull/113364