Introduce another level of metadata to distinguish non-aliasing accesses
Introduce another level of alias metadata to distinguish the individual
non-aliasing accesses that have inter iteration alias-free base pointers
marked with "Inter iteration alias-free" mark nodes. It can be used to,
for example, distinguish different stores (loads) produced by unrolling of
the innermost loops and, subsequently, sink (hoist) them by LICM.
Reviewed-by: Tobias Grosser <tobias@grosser.es>
Differential Revision: https://reviews.llvm.org/D30606
git-svn-id: https://llvm.org/svn/llvm-project/polly/trunk@298510 91177308-0d34-0410-b5e6-96231b3b80d8