[PATCH] D40094: LTO: clarify why we need to gracefully handle sys::fs::rename failures

[Bob Haarman via Phabricator via llvm-commits]

inglorion added a comment.

https://reviews.llvm.org/D39993 showed that it is not clear why the special case for sys::fs::rename failing with permission_denied exists. @pcc, @rafael, does this comment make it clearer?


https://reviews.llvm.org/D40094