[Support][CachePruning] prune least recently accessed files first
Summary:
Before this change, pruning order was based on size. This changes it
to be based on time of last use instead, preferring to keep recently
used files and prune older ones.
Reviewers: pcc, rnk, espindola
Reviewed By: rnk
Subscribers: emaste, arichardson, hiraditya, steven_wu, dexonsmith, llvm-commits
Differential Revision: https://reviews.llvm.org/D51062
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@340374 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed