[PATCH] D29331: [LICM] Hoist loads that are dominated by invariant.start intrinsic, and are invariant in the loop.

[Anna Thomas via Phabricator via llvm-commits]

anna created this revision.

We can hoist out loads that are dominated by invariant.start to the preheader.
We conservatively assume the load is variant, if we see a corresponding
invariant.end intrinsic.


https://reviews.llvm.org/D29331

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

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