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| author | Arnold Schwaighofer <aschwaighofer@apple.com> | 2013-06-24 03:55:45 +0000 |
|---|---|---|
| committer | Arnold Schwaighofer <aschwaighofer@apple.com> | 2013-06-24 03:55:45 +0000 |
| commit | d517976758c8674bdcd4c74457f7a83f20e432c5 (patch) | |
| tree | e691cd1fdcc4c1a9cf9249f5536a9b319f0f7d0d /llvm/test/Transforms/LoopVectorize | |
| parent | d57419696de716bde084de331ac7faad911cce8a (diff) | |
| download | bcm5719-llvm-d517976758c8674bdcd4c74457f7a83f20e432c5.tar.gz bcm5719-llvm-d517976758c8674bdcd4c74457f7a83f20e432c5.zip | |
LoopVectorize: Add utility class for checking dependency among accesses
This class checks dependences by subtracting two Scalar Evolution access
functions allowing us to catch very simple linear dependences.
The checker assumes source order in determining whether vectorization is safe.
We currently don't reorder accesses.
Positive true dependencies need to be a multiple of VF otherwise we impede
store-load forwarding.
llvm-svn: 184684
Diffstat (limited to 'llvm/test/Transforms/LoopVectorize')
0 files changed, 0 insertions, 0 deletions
