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authorHal Finkel <hfinkel@anl.gov>2012-06-28 05:42:45 +0000
committerHal Finkel <hfinkel@anl.gov>2012-06-28 05:42:45 +0000
commit282969ed3641ffa426e0440d3824dd219152b2d8 (patch)
treef6396a481f0870242720ba7cf28f679f6cde613b /test
parenta9ad9f64d56890852ff92639935eaf72b1157a98 (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')
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