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| author | Andrew Trick <atrick@apple.com> | 2013-10-14 20:45:17 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2013-10-14 20:45:17 +0000 |
| commit | 7c489ab36564ddde3fa672aff52cfcae06517dfc (patch) | |
| tree | 9a67916fa3df168bef810e2e66c21e2dcb14b41c /lib/CodeGen/LiveRegUnits.cpp | |
| parent | eb3b9f8ed979c34b7c11d749efb85df7fe1cfc9a (diff) | |
| download | external_llvm-7c489ab36564ddde3fa672aff52cfcae06517dfc.tar.gz external_llvm-7c489ab36564ddde3fa672aff52cfcae06517dfc.tar.bz2 external_llvm-7c489ab36564ddde3fa672aff52cfcae06517dfc.zip | |
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
Diffstat (limited to 'lib/CodeGen/LiveRegUnits.cpp')
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