[PATCH] D16197: [LV] Vectorize first-order recurrences

[Matthew Simpson via llvm-commits]

mssimpso retitled this revision from "[LV] Vectorize pre-load recurrences" to "[LV] Vectorize first-order recurrences".
mssimpso updated the summary for this revision.
mssimpso updated this revision to Diff 45423.
mssimpso added a comment.
Herald added a subscriber: mcrosier.

Addressed comments from Geoff and Adam.

Code generation is now done by shuffling the vectors from the current and previous iterations instead of trying to sink loads into the loop. The new approach is simpler and I don't think requires as much legality checking.


http://reviews.llvm.org/D16197

Files:
  include/llvm/Transforms/Utils/LoopUtils.h
  lib/Transforms/Utils/LoopUtils.cpp
  lib/Transforms/Vectorize/LoopVectorize.cpp
  test/Transforms/LoopVectorize/AArch64/first-order-recurrence.ll

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