[PATCH] D40375: Use MemorySSA in LICM to do sinking and hoisting.

[Alina Sbirlea via Phabricator via llvm-commits]

asbirlea created this revision.
Herald added a subscriber: Prazek.

Step 2 in using MemorySSA in LICM:
Use MemorySSA in LICM to do sinking and hoisting, all under "EnableMSSALoopDependency" flag.
Promotion is disabled.

Enable flag in LICM sink/hoist tests to test correctness of this change. Moved one test which
relied on promotion, in order to test all sinking tests.


https://reviews.llvm.org/D40375

Files:
  include/llvm/Transforms/Utils/LoopUtils.h
  lib/Transforms/Scalar/LICM.cpp
  lib/Transforms/Scalar/LoopSink.cpp
  test/Transforms/LICM/hoist-bitcast-load.ll
  test/Transforms/LICM/hoist-deref-load.ll
  test/Transforms/LICM/hoist-fast-fdiv.ll
  test/Transforms/LICM/hoist-invariant-load.ll
  test/Transforms/LICM/hoist-nounwind.ll
  test/Transforms/LICM/hoist-round.ll
  test/Transforms/LICM/hoisting.ll
  test/Transforms/LICM/sink.ll
  test/Transforms/LICM/sinking.ll

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