[PATCH] D34732: Clean temp directories before running lit

[Reid Kleckner via Phabricator via llvm-commits]

rnk added a comment.

In https://reviews.llvm.org/D34732#793263, @zturner wrote:

> No, I actually tried to be smart about it.  The following pseudocode describes the algorithm used


Nice, that's really cool. I figured we'd just pay 1.7s the first time we remove a test tree after 'check-all', but then pay less after running just llvm/test/MyAwesomeSuite because there were less output files. This is better, though. :)


https://reviews.llvm.org/D34732