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| author | Hal Finkel <hfinkel@anl.gov> | 2012-04-13 17:15:33 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2012-04-13 17:15:33 +0000 |
| commit | 064551e94c9763c7e74121b88f9cbccc0969946a (patch) | |
| tree | e7318aec8e99f055e9fad22b1a6db83c6eba7f7e /lib/Transforms/Vectorize/BBVectorize.cpp | |
| parent | e92077f11e2ca85d98fe41cf3aba2cb813e57c9a (diff) | |
By default, use Early-CSE instead of GVN for vectorization cleanup.
As has been suggested by Duncan and others, Early-CSE and GVN should
do similar redundancy elimination, but Early-CSE is much less expensive.
Most of my autovectorization benchmarks show a performance regresion, but
all of these are < 0.1%, and so I think that it is still worth using
the less expensive pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154673 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Vectorize/BBVectorize.cpp')
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