[PATCH] D50075: [UnJ] Improve explicit loop count checks

[Dave Green via Phabricator via llvm-commits]

dmgreen created this revision.
dmgreen added reviewers: SjoerdMeijer, hfinkel, ddibyend, Meinersbur.
Herald added a subscriber: zzheng.

Try to improve the computed counts when it has been explicitly set by moving the code around, so that counts will be modified less by the call to computeUnrollCount.

Also added some extra debug messages for when unroll and jamming is disabled.


https://reviews.llvm.org/D50075

Files:
  lib/Transforms/Scalar/LoopUnrollAndJamPass.cpp
  test/Transforms/LoopUnrollAndJam/pragma-explicit.ll

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