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| author | Hal Finkel <hfinkel@anl.gov> | 2012-06-28 05:42:45 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2012-06-28 05:42:45 +0000 |
| commit | 282969ed3641ffa426e0440d3824dd219152b2d8 (patch) | |
| tree | f6396a481f0870242720ba7cf28f679f6cde613b /test | |
| parent | a9ad9f64d56890852ff92639935eaf72b1157a98 (diff) | |
Precompute SCEV pointer analysis prior to instruction fusion in BBVectorize.
When both a load/store and its address computation are being vectorized, it can
happen that the address-computation vectorization destroys SCEV's ability
to analyize the relative pointer offsets. As a result (like with the aliasing
analysis info), we need to precompute the necessary information prior to
instruction fusing.
This was found during stress testing (running through the test suite with a very
low required chain length); unfortunately, I don't have a small test case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159332 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
0 files changed, 0 insertions, 0 deletions