[llvm-commits] [PATCH] LoopVectorizer

[Nadav Rotem]

On Oct 17, 2012, at 6:24 PM, Hal Finkel <hfinkel at anl.gov> wrote:

> he current pass handles only fixed trip-count (single-exit) loops without inter-iteration dependencies, correct? For this class of loops, I believe that what I proposed is correct. Maybe I'm thinking about this incorrectly, can you please provide a counterexample?

Yes. If there are no cross-iteration dependencies then x equals to the last SIMD lane.  I missed the part which said that there are no cross-iteration deps. 

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