[PATCH] D57967: [LICM&MSSA] Limit store hoisting.

[Alina Sbirlea via Phabricator via llvm-commits]

asbirlea created this revision.
asbirlea added a reviewer: george.burgess.iv.
Herald added subscribers: Prazek, jlebar, sanjoy.
Herald added a project: LLVM.

If there is no clobbering access for a store inside the loop, that store
can only be hoisted if there are no interfearing loads.
A more general verification introduced here: there are no loads that are
not optimized to an access outside the loop.
Addresses PR40586.


Repository:
  rL LLVM

https://reviews.llvm.org/D57967

Files:
  lib/Transforms/Scalar/LICM.cpp
  test/Transforms/LICM/store-hoisting.ll

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