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Author SHA1 Message Date
James Molloy 05a896a8d1 [BasicAA] Bugfix for r251016 
If the loaded type sizes don't match the element type of the sequential type, all bets are off and the addresses may, indeed, overlap.

Surprisingly, this just got caught in one test, on one builder, out of the 30+ builders testing this change. Congratulations go to http://lab.llvm.org:8011/builders/clang-aarch64-lnt/builds/5205.

llvm-svn: 251112
 2015-10-23 14:17:03 +00:00
James Molloy 5a4d8cd519 [BasicAA] Non-equal indices in a GEP of a SequentialType don't overlap 
If the final indices of two GEPs can be proven to not be equal, and
the GEP is of a SequentialType (not a StructType), then the two GEPs
do not alias.

llvm-svn: 251016
 2015-10-22 13:28:18 +00:00