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| author | James Almer <jamrial@gmail.com> | 2017-03-03 00:25:54 -0300 |
|---|---|---|
| committer | Sean McGovern <gseanmcg@gmail.com> | 2017-06-02 21:00:35 -0400 |
| commit | a876958d0fdd8bf10d315175daff12cd7d768053 (patch) | |
| tree | b6d75b757e741e25136d5835c8fd80411f38cea3 /ffbuild/libversion.sh | |
| parent | 61cec5adaacb358783c18aa07362f15824c1b274 (diff) | |
| download | ffmpeg-a876958d0fdd8bf10d315175daff12cd7d768053.tar.gz | |
avutil/md5: fix misaligned reads
This makes ubsan happy and also considerably increases performance on
big endian systems.
Tested on an IBM POWER7 3.55 GHz
Before:
2.24user 0.14system 0:02.39elapsed 99%CPU (0avgtext+0avgdata 2624maxresident)k
2.26user 0.11system 0:02.38elapsed 99%CPU (0avgtext+0avgdata 2688maxresident)k
2.23user 0.15system 0:02.38elapsed 99%CPU (0avgtext+0avgdata 2624maxresident)k
2.25user 0.12system 0:02.38elapsed 100%CPU (0avgtext+0avgdata 2624maxresident)k
2.20user 0.15system 0:02.36elapsed 99%CPU (0avgtext+0avgdata 2624maxresident)k
After:
1.86user 0.13system 0:02.00elapsed 99%CPU (0avgtext+0avgdata 2624maxresident)k
1.89user 0.11system 0:02.01elapsed 99%CPU (0avgtext+0avgdata 2624maxresident)k
1.85user 0.14system 0:02.00elapsed 99%CPU (0avgtext+0avgdata 2624maxresident)k
1.84user 0.15system 0:01.99elapsed 99%CPU (0avgtext+0avgdata 2624maxresident)k
1.89user 0.13system 0:02.02elapsed 99%CPU (0avgtext+0avgdata 2688maxresident)k
Tested-by: Nicolas George <george@nsup.org>
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Sean McGovern <gseanmcg@gmail.com>
Diffstat (limited to 'ffbuild/libversion.sh')
0 files changed, 0 insertions, 0 deletions