| commit | 7c489ab36564ddde3fa672aff52cfcae06517dfc | [log] [tgz] |
|---|---|---|
| author | Andrew Trick <atrick@apple.com> | Mon Oct 14 20:45:17 2013 +0000 |
| committer | Andrew Trick <atrick@apple.com> | Mon Oct 14 20:45:17 2013 +0000 |
| tree | 9a67916fa3df168bef810e2e66c21e2dcb14b41c | |
| parent | eb3b9f8ed979c34b7c11d749efb85df7fe1cfc9a [diff] |
Use a SparseSet in LiveRegUnits. Some clients may add block live ins and may track liveness over a large scope. This guarantees an efficient implementation in all cases with no memory allocation/deallocation, independent of the number of target registers. It could be slightly less convenient but is fine in the expected case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192622 91177308-0d34-0410-b5e6-96231b3b80d8