[XRay] cache symbolized function names for a repeatedly queried function ID
Summary:
Processing 2 GB XRay traces with "llvm-xray convert -symbolize" needs to
go over each trace record and symbolize the function name refered to by
its ID. Currently this happens by asking the LLVM symbolizer code every
single time. A simple cache can save around 30 minutes of processing of
that trace.
llvm-xray's resident memory usage increased negligibly with this cache.
Reviewers: dberris
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D43896
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@326407 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed