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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2014-05-11 10:28:58 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2014-05-11 10:28:58 +0000 |
| commit | 1fef64214c98280a6fe62bcc1d47934ebcce750b (patch) | |
| tree | cc423ab71b66aea053346c185b9128327697d11d /llvm/lib/Transforms/InstCombine | |
| parent | b7ee689f91b10172690a511a7d5ac6fd35b2a96a (diff) | |
| download | bcm5719-llvm-1fef64214c98280a6fe62bcc1d47934ebcce750b.tar.gz bcm5719-llvm-1fef64214c98280a6fe62bcc1d47934ebcce750b.zip | |
SLPVectorizer: Instead of just performing CSE on dead blocks ignore them completely.
Turns out that there is a very cheap way of testing whether a block is dead,
just look it up in the DomTree. We have to do this anyways so just ignore
unreachable blocks before sorting by domination. This restores a proper
ordering for std::stable_sort when dead code is present.
Covered by existing tests & buildbots running in STL debug mode (MSVC).
llvm-svn: 208492
Diffstat (limited to 'llvm/lib/Transforms/InstCombine')
0 files changed, 0 insertions, 0 deletions
