Mehdi Amini 2b72a53db9 Fix LoopLoadElimination to keep original alignment on the inital hoisted store
This is fixing a bug where Loop Vectorization is widening a load but
with a lower alignment. Hoisting the load without propagating the alignment
will allow inst-combine to later deduce a higher alignment that what the pointer
actually is.

Differential Revision: https://reviews.llvm.org/D28408

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@291281 91177308-0d34-0410-b5e6-96231b3b80d8
2017-01-06 21:06:51 +00:00
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