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| author | Francis Ricci <francisjricci@gmail.com> | 2017-07-17 23:03:03 +0000 |
|---|---|---|
| committer | Francis Ricci <francisjricci@gmail.com> | 2017-07-17 23:03:03 +0000 |
| commit | 7e46d78d47832f03ce42adcf56417fbfd47cbaad (patch) | |
| tree | 14cb9aaf563044e8836449365da05ff2f6fab21a /lib/msan/msan_allocator.cc | |
| parent | 76862cd3ca43eb49946214b6263a22046a0033b2 (diff) | |
Only scan global sections containing data in LSan on darwin
Summary:
__DATA segments on Darwin contain a large number of separate sections,
most of which cannot actually contain pointers, and contain const values or
objc metadata. Only scanning sections which can contain pointers greatly improves
performance.
On a medium-sized (~4000 files) internal project, I saw a speedup of about 50%
in standalone LSan's execution time (50% improvement in the time spent running
LSan, not the total program time).
Reviewers: kcc, kubamracek, alekseyshl
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D35432
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@308231 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/msan/msan_allocator.cc')
0 files changed, 0 insertions, 0 deletions